Mcintosh mc275 schematic 64 Kb 0. 6 volts across 16 ohms 24. Category MCINTOSH MC275 50TH ANNIVERSARY USER MANUAL MCINTOSH C1000 PREAMPLIFIER USER MANUAL MCINTOSH MC2KW USER MANUAL McIntosh MC 275 Mk IV Service Manual - Free download as PDF File (. 1 Electrical McIntosh Laboratory's MC275 50th Anniversary Limited Edition (aka MC275LE, $6500)3 was kind of in between: previous versions had been reviewed by Sam Tellig and Fred View and Download McIntosh MC-30 instruction manual online. YEAR 2009-2012 Condition 10/10 SPECS Tubes: 4-KT88/6550 output, 3-12AX7A, 4-12AT7 POWER OUTPUT 75 wpc (stereo) 20-20kHz (+0,-0. I own a MK VI, its service manual and schematic. 07 Kb 0. 08 Mb 0. 1 pgs 419. AC input Just a quick overview of the incomparable McIntosh MC275 tube amplifier we now have on display for auditioning at Xtend Technologies. Type: (PDF) Size 15. 50% and a high signal-to-noise ratio (SNR) of 100 dB, ensuring clear and powerful sound quality. The bias test point and Mcintosh MC2KW, MC1. MC275 [MK VI] STEREO POWER AMPLIFIER The Compendium CONTROLS & CONNECTORS: Polished stainless steel/black chassis. Very clean example of the famous McIntosh MC275 design, in its MK V or MK 5 designation (next to newest). Upon its initial release in 1961, the MC275 Vacuum Tube Amplifier became an instant favorite due to its ability to drive the power-hungry speakers of that time period with great power at low distortion levels. It was originally modeled after the McIntosh Mc275, but this performs better. embrace it. ," description, and model and serial number for your amplifier when ordering parts. Per the values I found on an MC275 schematic, it looks like the tubes are running right around 16 watts plate dissipation on a tube rated for 35. The classic Mcintosh MC275 carries on with their classic left side signal connections and right side power connections making it somewhat more demanding and challenging to fit within certain hifi MC275 Tube Power Amplifier SPECIFICATIONS Performance Limits POWER OUTPUT, STEREO 75 watts into 16, 8 or 4 ohm loads is the minimum sine wave continuous average power output per channel from 20Hz to 20,000Hz. The McIntosh MC275 has rightfully been heralded as one of the top ten iconic and revolutionary amps ever produced. Input 050082. It is a virtual exact duplicate of the original MC275 MKIV circuit board, and with rare exception, all the parts MC2752-Channel Vacuum Tube Power AmplifierAn object of desire cherished by music lovers around the world, the original MC275 was designed and engineered in 1961 by McIntosh co McIntosh parts will also happily supply you with a copy if you give them an MC-275 Mk VI Serial Number and are a registered owner of this amp model. The circuit has 51k resistors for R17, R42 and 56k resistors for R18, R43. Tomy. They are, however, as I have demonstrated here on AK a drop-in for later bifilar transformers in an actual McIntosh MC275; in my specific case the Gordon Gow edition. Legendary Mcintosh MC275 MKVI Tube Power Amp Canuck Audio Mart CA$5,000 Nov 24, 2024 Como Ficho (VENDIDA) McIntosh MC275. Download. *Note, I am not promoting intellectual property theft although the original patents most likely are public domain. The MC225 has on one chassis two 25 watt power amplifiers. 5 MB. The MK V sounds as good, if not better than the MK VI, and foregoes what many think to be silly LED lighting on the tubes and the more complicated speaker binding posts. MC275 Capacitor and Resistor list per SC125-109C schematic C1 0. com/ThomasAndStereoGear used in this review :Mcintosh MC275 MK4 tube power amplifi We have 11 McIntosh MC275 manuals available for free PDF download: Service Manual, Owner's Manual, Maintenance Manual, Connection Diagrams Schematic Diagram. I have the skills and motivation to build a tube power amp for my 2-channel setup. Back in the old days I used to devote a lot of time in painstainkly restoring McIntosh models. Be sure to mention "Schematic No. I’ve also been into the amp and made modifications. Buy Points; How it Works; FAQ; Schematic. emile. MONOBLOCK AND 2-CHANNEL The heavy lines on the schematic denote the primary signal path. This site helps you to save the Earth from electronic waste! MCINTOSH 175 275 MC30 MC60 MC225 MC2100 SCH. This maintenance manual provides specifications and component information for the MC275 stereo power amplifier. 9. Devices. Parts arrived on time, now installed and working fine. Reviewed Jul Reviewed Dec 22nd, 2022 by . It does not have the same warm sound as an MC275 or MC1502, but it sounds fuller and warmer than an Ayre VX-5, and more dynamic and potent than a Slight difference: Today's Marantz is in name only while McIntosh continues to exist largely unchanged from its original form. There is also no trimmer on an original MC275 board as you can see below. Before the MC275 I tried this approach on a MA5100 integrated amp recreating most of the lettering on the front panel. View and Download McIntosh C8AC owner's manual online. The MK VI has completely different tube numbering than the earlier 275’s. Key Components: The MC275 schematic identifies the key components used in the amplifier. Our iconic blue Watt output meter is globally recognized as a symbol of quality home audio. Quick Links. The manual covers serial numbers 275-10001 to 275-10147 and 100E1 & above. 7 MB. com Part No. 6. 10. Summary of Contents for McIntosh MC275 Page 1 2 conductor shielded with 1/8 inch stereo mini phone plug on each end. MC8207. This site helps you to save the Earth from electronic waste! MCINTOSH MC2205. Repacking Instructions. 's 275-10001 to 275-10147 and 100E1 & above) Be sure to mention "Schematic No. McIntosh Power Amplifiers. All I could find so far are PDF service information but the actual schematics are not very clear. mats . 04131300 Note: Refer to the MC275 Owner’s Manual page 10 for additional connection information. Stereo Power Amplifier. I do not have the schematic for the 2000 in front of me but will next week. Reviewed May 14th, 2022 by . com The Classic McIntosh Amplifier This tube power amplifier has all the features to meet the needs of today’s music enthusiast, while preserving McIntosh MC275 Retail Price - $6,500. Secondly, the MC275 Mk VI is a current McIntosh product while Marantz 9/9B isn't. 2—Representation of Mclntosh output circuit. btw-I used a pair of Stax earspeaker for most of my listening. McIntosh MC275 CE Info needed. RESISTANCE AND VOLTAGE CHART. AC Operated Il Tube Stereo Amplifier 105 AC, 50-60 Cycles RATING 160 Watts, l. View and Download McIntosh MC275 service manual online. Of The McIntosh MC240 is McIntosh's first stereo amplifier, and their last new tube amplifier design before they gave up on tubes in favor of transistor amplifiers. hfe_mcintosh_mc275_schematic. MAINTENANCE MANUAL. Quality performance remains timeless. Just to know what I might have to deal with some day. 21 - 26 Notes . In addition to use as a stereo amplifier, the flexibility of the MC275 permits it to be used as a monophonic amplifier that delivers 150 watts, or as two separate 75 watt amplifiers with each chan-nel amplifying completely separate pro-grams, or as two amplifiers for use with an Schematic. McIntosh MC275 power amplifier Specifications. Category AUDIO MCINTOSH MC275 MAINTENANCE SCH MCINTOSH MC275 MK4 TUBE POWER AMPLIFIER SM. Summary of Contents for McIntosh MC275. 99% 16. Each stage is Download MCINTOSH MC275 MK4 TUBE POWER AMPLIFIER SM service manual & repair info for electronics experts MC275 [MK VI] “Spotting features”: 1. It is the direct replacement to our award winning MC2152 Limited Edition 70th Anniversary Vacuum Tube Amplifier, which was released in celebration of our 70th Anniversary that occurred in 2019. If the site has helped you and you also want to help others, please Upload a manual, circuit diagram or eeprom that is not yet available on the site. 5dB) Distortion: 0. 5kg / 76lb MC275. Output -Mono. Comments. McIntosh patented, gold plated, speaker binding posts assure the bestconnection to all speaker cables, while high quality balanced and unbalanced input connectors enhance signal transfer from the connected I have ( as usual ) stumbled into an area where i did not know what i was talking about. 1 pgs 60. Mcintosh MC275 Distortion Questions. 5%. View and Download McIntosh MC275 owner's manual online. Page 32. MC225 SPECIAL COMPONENTS (Schematic No. Thread starter CohibaJoe; Start date Mar 1, 2022; Still looking MC275 mk IV schematic and found something strange: V1 (12AX7 dephaser)+V2 (12AX7 left ch) and V5 (12AX7 Right ch)+V6 (12AT7 I want to find the schematic of mcintosh mc275 mkiv amplifier. Y. Indianapolis 6. One 30uF cap is unused in my amp, while the schematics use all 4 of the 30uf caps. I posted this message on the Tube Audio forum last night. McIntosh is renowned for crafting high-end home audio sound systems that offer an unparalleled music and film experience. generation siden den så dagens lys første gang, har opnået intet mindre end ikon status. Open Download Copy Link 168. McIntosh - MC30 Service Manual & Schematics Author: Vintage Vacuum Audio Subject: McIntosh - MC30 Service Manual & Schematics - Vintage Vacuum Audio Keywords: McIntosh; MC30; I ordered and received the main board for the MC275 clone. Bob has evolved the ST-70 which is why it is widely accepted and admired. 2 pgs 98. SAMS & CO. (big mouth opens too fast for brain to catch up-syndrome :-) There is apperently some sort of auto-bias in mcintosh amps such as mc275 The schematic is available but frankly i do not understand how MC275 rør effektforstærkeren fra McIntosh, der er 6. It includes a voltage and resistance chart that lists the expected voltage and resistance readings for each tube when the amplifier is operating normally. schematic - Boots. Unit weight 68lbs (Yes, it is as I had to go up to 2nd floor) Created Date: 10/15/2006 10:01:41 AM Stereo Power Amplifier MC-275 Mk V Ampl/Mixer McIntosh Audio Company; Binghamton, NY, build 2007 ?, 8 pictures, 32 schematics, 11 tubes, United States of. I doubt the 275 clone is anything more than a schematic recreation. Guess what? They sound of the two amps is pretty close now. thanks, Ron McIntosh MC275 schematic; McIntosh MC275 schematic $25. These include the power supply, input stage, driver stage, and output stage. The View and Download McIntosh mc2205 instruction manual online. MC7270. 5 watt zener as McIntosh specified. Questions about RF chokes used in McIntosh tube amps. View and Download McIntosh MC275 service manual online. I have the 1997 version in stainless steel. Line OUTPUTS octal socket for 70V/600 OHM output. This unit was fully tested in-house, and fit sure to give the SCHEMATIC NO. This was the amp I desired while in college but couldn't afford. 2 Chambers Street Binghamton, NY 13903-2699 Phone (800)538-6576. Question: I need the black handle for the stereo-mono switch on my MC-240. 1 pgs 130. This site helps you to save the Earth from electronic waste! MCINTOSH MC275 USER MANUAL. McIntosh MC-275 Service manual McIntosh Service manual. The McIntosh Sound is “The Sound of the Music Itself. It refuses to stay dead. Type: (PDF) Size 1. The new MC1502 has identical audio Explore the world of tube electronics by following along with the restoration of this classic US made preamp from 1965. 5 ohms). Taking design cues from the legendary McIntosh MC275 Vacuum Tube Amplifier, the MA252 combines the best of vacuum tube and solid-state circuit design to create an amplifier that’s both visually and sonically stunning. 04133600 Note: Refer to the MC275 Owner’s Manual page 10 for additional connection information. MK V Mark 5 Como Ficho €2,300 Feb 4, 2021 Bazos Czechia zesilovač McIntosh MC-275 MK III /1995-2003/ Bazos Czechia CZK 125,000 Nov 18, 2024 CK Audio McIntosh MC275G MkIV Tube Power Amplifier schematic (1963) - rolland shake. Tube power amplifier (20 pages) Page 13 SCHEMATIC PART NO. The rest of the small tubes and outputs are AC heaters. 26 KB 2023-11-02 02/11/2023 2023-11-07 07/11/2023: 168. Type: (PDF) Size 2. The new Fig. dk collection of McIntosh Audio schematics & service manuals; 1. Phone-Area Code 607 723-5491 2M-AA126-170 COMPONENT NO. The latest MC275 features the widest bandwidth transformers McIntosh has ever made, which contribute to the amp’s deeper bass and more extended highs, and also to a lower operating temperature. MC150. Yes the MC2000 is a somewhat more luxurious design as it should be at the price. Unit weight 68lbs (Yes, it is as I had to go up to 2nd floor) Stereo Power Amplifier MC275 Ampl/Mixer McIntosh Audio Company; Binghamton, NY, build 1961–1973, 18 pictures, 1 schematics, 11 tubes, United States of. The Plitron seems the best alternative to the $600 McIntosh transformers-- and outperforms it in some ways--but has its own limitations. pdf) or view presentation slides online. This tube power amplifier has all the features to meet the needs of today’s music enthusiast while preserving the qualities that have made the Combined with the widest bandwidth McIntosh output transformer design, the MC275 features tauter bass control and thermally quiet circuit design. The most powerful of the vintage mac tubes and arguably the most coveted. , 2 Chambers Street, Binghamton, N. 2. txt) or read online for free. 9 - 16 Terminal Schematic The MC275 is factory configured for one of the followingAC Voltages: (CONTACT MCINTOSH FOR CORRECT View and Download McIntosh MC275 instruction manual online. This document provides a service manual for a stereo power amplifier starting with serial number WV1536. LEFT and RIGHT speaker OUTPUT Restoring an "Un-molested 60's " McIntosh MC275 or buying a MC-150 Chinese Thing? . The new amp has double the power of the storied MC275 amp but McIntosh managed to improve the signal to noise ratio in this single chassis to 112dB versus 105dB when using two MC275 amps to obtain 150 watts of power. The overall storyline behind the MC275 and its history with McIntosh is exceptionally rich and it has been the driving force behind countless home audio systems for decades. Repair w/Schematics. tutor turtle Very Nice amp. 050081 Amplifier PCB. com MC275 Anniversary Tube Power Amplifier Owner’s Manual; Page 2: Safety Instructions The lightning flash with arrowhead, within an equilateral The exclamation point within an equilateral triangle is triangle, is intended to alert the user to Angus and Vilip unbox the legendary McIntosh MC275 MK VI. Comes with the original packaging, manual, and power cord. These components are designed and built specifically for the MC275. I bought the amp from my previous employer. They kindly suggested that I should seek help on the McIntosh forum. Manufactured 1961 - 1967; 25 Watts x 2 Channels, 50 Watts x 1 Channel; Vacuum Tube; Print this page. Submitted by Wayne Y on December 4th, 2017. The Gow only has 500 vdc electrolytics so maybe they lowered the B+ to keep a safe margin. 05 Kb 2. C29A, B, C L5 R45 SR1, Combined with the widest bandwidth McIntosh output transformer design, the MC275 features tauter bass control and thermally quiet circuit design. We had also pressured them to make View and Download McIntosh MC275 instruction manual online. McIntosh Main Schematic and PCB . Our MCINTOSH MC275 SM Service Manual provides the important servicing information and operating instructions you need to diagnose and repair your malfunctioning or failing unit. application/pdf McIntosh-20W1-pwr-sch. 00. PARTS LIST. schematic. I think the circuit was changed a little and it's no longer hard-wired. Combined with the widest bandwidth McIntosh output The reissue MC275 you can buy now and for the last several years is the MK VI. Still deciding on a Tube set and will be using the included (Orsefon 12AU7, 12AX7). service manual & repair info for electronics experts McIntosh Amp Schematics to assist you with your amplifier repairs and modifications. User Manual. Category: Schematics. Line Output-Stereo or Twin Amp. Page 1 MAINTENANCE MANUAL MC275 STEREO POWER AMPLIFIER (Serial No. Amplifier McIntosh MC275 Service Manual (22 pages) Amplifier McIntosh MC252 Owner's Manual. Reviewed Jan 09th, 2018 by . McIntosh Electronics Production History (1949 to 1999). Also for: C8, Mx180, Mc275. Better than Amazon. Large 5-way speaker binding posts on angled front panel. I haven't heard it yet, according to reviews it Il McIntosh MC275 VI is the sixth version of the most iconic tube power amplifier in history, produced since 1961. I did notice Audio Classics had 2 used ones, not sure which series as they are up to series VI. Components. MC225. The latest MC275's have series connected electrolytics in the power supply of at least 350vdc each so plenty of headroom there. Replace the power supply caps and check all voltages and you should be good to go if everything matches to the schematic. Sign In Upload. Manufacturer: McIntosh Laboratory, 2 Chambers Street, Download MCINTOSH 175 275 MC30 MC60 MC225 MC2100 SCH service manual & repair info for electronics experts. T=Tube, SS=Solid State, MC240, If those are the original tubes in the MC275 , and they look like they are, that amp was never used. Coil 16 layers (the original Mcintosh MC275 is 12 layers) UP-OCC (single crystal oxygen-free copper) group cross winding method with the purity of single crystal oxygen-free copper 99. On the green board (I can't tell from the pics of the gold board) for D1 thru D9 they use a P6KE200A device rather than a 200V 1. Name Size; McIntosh-20W1-pwr-sch. The schematic that I have on hand (and that's readily available on the internet) is different from the circuit on this particular amp. 7dB from the 16 ohm tap. Cherish it. The seller has listed as Click to marantz 7 mcintosh mc275 mcintosh c20 mcintosh mc240 mcintosh mx110 Genuine McIntosh C 22 Service manual, brochure & schematics. 0 reviews. The MC275 has on one chassis two 75 watt power amplifiers. They may be purchased directly from Mclntosh Laboratory by ordering from the Service Department. 3 KB · Views: 46 Last edited: Mar 7, 2016. i have finded schematic of mcintosh mc275 ( many on the internet), i know the circuit of mcintosh mc275 mkiv has modified for input part ,but i do not know what modified if anyone has this schematic mcintosh mc275 mkiv may give me by here or by my email :zanhuynh@gmail. As to the MC275 clone, I had a few questions and have received "Support" with He wants a 275 manual just like I wanted a XRT 28 manual. Related Catalogues. com/McIntosh MC275https://www. Another difference is the PSU. This vacuum tube power amplifier has all the features to meet the needs of today’s music enthusiast, while preserving the qualities that have made the MC275 the most revered McIntosh vacuum tube Service manuals, schematics, eproms for electrical technicians. 002-Channel Vacuum Tube Amplifier 75 Watts x 2 channelsVacuum Tube Design his tube power amplifier has all the features to meet the needs McIntosh MC275 CE schematic needed. Mcintosh owner's manual stereo power amplifier mc275 (16 pages) Amplifier McIntosh MC275 Owner's Manual Table 1. 7 Amp. This site helps you to save the Earth from electronic waste! MCINTOSH MC3500 SCH. Thread starter AA6U; Start date Oct 18, 2016; AA6U Active Member. Download MCINTOSH MC275 MAINTENANCE SCH service manual & repair info for electronics experts Because of the constant upgrading of McIntosh products’ circuitry and components, the Company cannot insure, and does not warrant, the accuracy of the within schematic material, which is The MC275 has on one chassis two 75 watt power amplifiers. Kenny Russell Dynaco ST70 https://www. It is hard to imagine McIntosh without the MC275. Product Code: MC275 Add To Cart Description Additional information Reviews (0) This listing is for detailed technical documentation for the unit in question. I guess one of these days in the near future I'll have to get a At this point, McIntosh realized there was a need to commit to tube designs as the demand was continuing to grow by significant amounts. McIntosh Laboratory, Inc. The output RMS voltage is: 34. 29 - 32 Rear Panel or the MC275 I would have bought. Right speaker OUTPUT binding posts: COM, 4 Ω, 8 Ω, 16 Ω. Your decision to own this McIntosh MC275 Tube Power Amplifier ranks you at the very top among discriminating music listeners. Unbalanced inputs on the Download MCINTOSH MC275 USER MANUAL service manual & repair info for electronics experts View and Download McIntosh MC275 instruction manual online. This amplifier offers power of 75 watts per channel in stereo and di mode Up for sale is one of my McIntosh MC275 VI amplifiers in pristine, like-new condition. S. Amplifier Mcintosh MC275 50th Anniversary Owner's Manual. Service manuals, schematics, eproms for electrical technicians. 1 Handmade 4-TFT-R1006000 C2 330PF Mouser 598-CD15FD331GO3F C3 100 Mouser 594-2222-118-18101 View and Download McIntosh MC2300 service manual online. In addition to the new MC1502, McIntosh released the C22 Mk V preamp as a direct replacement for the anniversary C70 preamp. Reactions: CohibaJoe, ramjet, PakProtector and 2 others. 7 The MC275 operates on 105 volt to 130 volts is available from the secondary of the volt, 50 to 60 cycle power. . The MA252 Integrated Amplifier is the first hybrid integrated amplifier from McIntosh. 2 Chambers Street Binghamton, New York 13903-2699 Phone: 607-723-3512 www. Repair w/Schematics McIntosh Tube Amplifier: MC275 Year of construction: 1961 - 1970. All other connectors and controls are on the vertical front panel. pdf), Text File (. 1:1 clone Mcintosh MC275 Upgrade KT88 Tube Amplifier Power Amplifier Copy HiFi Kt88*4 Push-pull Clas, Tube Amplifier Power amplifier Class AB 75W Power AMP - Buy China Amplifier,HiFi ,Class AB on Globalsources. 1 pgs 47. Oct 18, 2016 #1 MC275 Schematic and PS Caps don't jive rkic; Jun 15, 2004; McIntosh Audio; Replies 11 Views 1K. MC1000. 2 Chambers Street Binghamton, New York 13903-2699 Phone: 607-723-3512 FAX: 607-724-0549 Combined with the widest bandwidth McIntosh output transformer design, the MC275 features tauter bass control and thermally quiet circuit design. Two 75 watt output channels will drive any high quality Loudspeaker System to its ultimate performance. The MC275 is a legend. I prefer it to the MC275. Bob has upped the power and made significant design changes while staying true to the look and feel of the original. Page 2. Those red lables on the bass will discolor after a few hundred hours and they look brand new. Be sure to To purchase MC275/MC275 mkVI spares or accessories, please contact the company via their website or visit an authorised retailer. Thanks for watching! Jack Haight from @DeVanceElectronicLifestyle unboxes the MC275 from @mcintoshlabs -75 Watts x 2 channels or 150 Watts x 1 channel-Unity Coupled Circuit O A MC275 Stereo Operation Connection Diagram McIntosh Laboratory, Inc. MC7300. This sixth generation MC275 has many subtle enhancements from the previous release that greatly improve performance. pdf. 2dB from the 4 ohm tap, 20. ," description, and model and serial number for Experience the magic of pure music with the MC275VI Vacuum Tube Amplifier, the sixth generation of the iconic MC275 from McIntosh. Manufactured 2012 - 2015; 50th Anniversary Limited Edition (same version as the current production model but with a gold chassis) 75 Watts x 2 Channels, 150 Watts x 1 Channel Now you can take advantage of traditional McIntosh stan-dards of excellence in the MC275 Stereo Power Amplifier. MC2300 amplifier pdf manual download. This sixth-generation iteration of the MC275 has been meticulously refined to deliver an exceptional performance that transcends expectations. MC207 Amplifier McIntosh MC275 Service Manual. How it Works Log In / Sign Up. com Unfortunately the conversation got derailed and the thread closed, so I did not get the info I wanted. Page 20. Page 9. Description: Two-channel, tubed stereo (switchable to parallel mono operation) power amplifier. MC275. com . Since 1960 production, McIntosh MC240 and MC275 have used RF choke 1. This site helps you to save the Earth from electronic waste! MC275. Made in U. A high-speed protection circuit shuts down the amp in case of tube malfunction or short circuits. The MC275 tube amp is back ordered for 9 months due to very high demand. Mar 9, 2016 #15 The basic design of the MC-240 and vintage MC-275 are for all intents and purposes identical except for obvious changes in output stage and power supply capacity. This is the first version, The MC275 uses an advanced design of the Mclntosh output transformer. than 0. Even after being discontinued in 1971, it made a comeback in 1993 to commemorate the legacy of McIntosh co-founder Gordon McIntosh MC275 MK VI Clone. We believe sound shapes our understanding of the world and is central to our identity. That's a downgrade IMHO, but Ron Cornelius of McIntosh says the switch resulted in a better S/N ratio (McIntosh loves their numbers). I just don’t have the design expertise and don’t quite know where to start I'm in need of the correct service information (hopefully schematic), but at the very minimum, the internal fuse rating, for a very early McIntosh MC275. I have tried asking Mcintosh but they can´t help me. connects KT88’s plate to transformer primary plate out - this is understandable to avoid high frequency oscillation. com/products/amplifiers/MC275B Amplifier; Device Owner's Manual Service Manual Brochure Catalog Miscellaneous Pictures Device; MC30: MC30_own. Technical question: I'm troubleshooting distortion on a McIntosh Mx110Z and wanted to rule out incorrect biasing of the 12AX7 tube (V15) which is the first stage of the Service manuals, schematics, eproms for electrical technicians. Search Best Tube Pics New Tube Pics. It's the Count Dracula of power amps. 7uH that 1. 8. McIntosh MC275 2-Channel Vacuum Tube Amplifier in Black. 050082 Input PCB. Google to find schematics Page 1 Stereo Power Amplifier MC275 Owner’s Manual McIntosh Laboratory, Inc. McIntosh MC275 IV distortion on channels. AC POWER For 150 watt monophonic operation 70. Ron C, a longtime Mcintosh employee had explained this in another forum. The Mk VI phase splitter tube is V4. mcintoshlabs. Features: Stereo 2 x 75W; 438 x 311 x 203mm / 17-1/4 x 12-1/4 x 8" 34. Wow! And free shipping! AND there is an upgraded model for merely $200 more! " If the huge thrust is powerful and demeanor, but it still retains the smooth texture of a vacuum tube machine, it has an open and wide sound field, listening to the large-scale orchestral music is especially wonderful, you can easily feel the hierarchical voices, the undulating dynamics in McIntosh MC225. 9 MB. For this no need registration. The MC257 is highlighted by our new eye-catching TripleView ™ Power Output Meter that independently indicates the real time power reading of the amplifier’s three front channels. 5 volts across 8 ohms I'm curious if anyone has any insights or advice on using the Plitron tranny in a McIntosh MC275 type design. Seems like the McIntosh amps have a higher reputation now than in the 90s and early 2000s and I like the one I have a lot so that's what I would try to do if I can figure out the transformer. MC1201. FUSE. Unless otherwise noted, all voltages indicated on the schematics are measured under the following conditions: a. The most iconic valve amplifier in history, now in its 6th generation of design and still going strong. Changing that tube can change the sound of the amp. I have two of these Ok so last night I run the McIntosh MC275 against the VTA ST-120 but I had the ST-120 in triode mode. The result is pure music. Indiana The MC275 MKIV has DC heaters on the small input tubes only. In addition to its usual primary (plate) and secondary (output) windings, it has an overall NFB winding (that feeds back to the cathode of the 1st stage), a center-tapped cathode winding, which is both a primary and a secondary (it acts as a cathode load, adding the cathode power to the anode power AND providing negative voltage edition mcintosh mC275 tube power amplifier combines modern convenience and performance enhancements without altering the sound character that has made it famous for the past 50 years. Introduced in 1961, the Mac 275, in its original hardwired edition, was produced until 1970. 5uH and 2. pdf MC30_ser_b. Popular features of the MC275 50th Anniversary tube amplifier have been carried over to this polished stainless steel chassis MC275, including the McIntosh patented, gold plated, speaker binding posts, which assure the best connection to all speaker cables, while high quality balanced and unbalanced input connectors enhance signal transfer from the connected preamplifier. I know for sure the output transformers are now bigger. Replacement Parts. Stereo Vacuum Tube Power Amplifier (1961) add a review. MODE switch: STEREO or MONO. McIntosh Model MC-240 (Serial ilP001 and Mc INTOSH MODEL MC-240 McIntosh Laboratory, Inc. For nogle dage siden kom et ungt par gående forbi butikken på Klostervej, indgangsdøren stod på klem i det gode vejr og i løbet af det korte øjeblik det tog det unge par at passere forretningen, blev MC275 spottet med kommentaren ”Det er da A MC275 Stereo Operation Connection Diagram McIntosh Laboratory, Inc. View and Download McIntosh MC-2105 service manual online. 6L6GC ECC82 6L6GC ECC83 ECC83 ECC83 FOLDER 6 12BH7A ECC83 12BH7A HOWARD W. View and Download McIntosh MC207 service manual online. Originally released in 1961, the MC275 became an instant classic for its exceptional power and low distortion levels. I remember the Mac 275 fondly—rather like girlfriends from my college years. DavidinNC I’ve only been using McIntosh equipment for a few months but have had very good equipment from Marantz, Kenwood my amp started to sound a little dull, so I downloaded the schematic from HiFi and was able to trace the signal path through capacitors C9, C10 MC 7205 FIVE CHANNEL POWER AMPLIFIER The Compendium FRONT PANEL: Glass with illuminated teal/gold nomenclature. O ntroducing the “new” 50th anniversary Limited edition mcintosh mC275 The reincarnated MC275 received incredibly high acclaim and earned its spot back in the product lineup. It includes 3 pages summarizing the amplifier's specifications and features, including output power, frequency response, input/output impedance, gain, and The newest incarnation of the McIntosh MC275, the Mk IV, differs a bit from the others. I use the original McIntosh branded, Svetlana built, output tubes. In addition to use as a stereo amplifier, the flexibility of the MC275 permits it to be used as a monophonic amplifier that delivers 150 watts, or as two separat 75 watt amplifier s wit h eac chan-nel amplifying completely separate pro-grams, or as two amplifiers for use with an McIntosh MC275 Schematic 2860 views: McIntosh MC275 Service Manual 3747 views: McIntosh MC275CE Owner's Manual 1982 views: MC275CE Service Manual 1873 views: McIntosh MC275IV Brochure 2 1773 views: McIntosh MC275IV Brochure 1742 views: McIntosh MC275IV Owner's Manual 1658 views: View and Download McIntosh MC275 instruction manual online. Find the schematic, voltage and resistance chart, and special components for the MC275 stereo power amplifier. Reactions: #hifi #audiophile #stereo #audioreviews #highfidelity https://www. Output-Stereo or Twin Amp. MC275 amplifier pdf manual download. Since 1961, the smooth, clear and powerful tone of the legendary McIntosh MC275 has always been the quality standard of power amplifiers. 0 channels of audio output. Left speaker OUTPUT binding posts: COM, 4 Ω, 8 Ω, 16 Ω. ” For several years I've owned a Cayin A100-T. In addition to its use as a stereo amplifier, the flexibility of the MC275 permits it to be used as a monophonic amplifier that View and Download McIntosh MC275 service manual online. Phone-Area Code 607-723-5491 2M-HP-761 The McIntosh MC275 is a receiver designed for performance/stage use, featuring 2. 12. McIntosh MC275 power amplifier www. I use the original McIntosh branded "Russian" built input tubes. MC225 VOLTAGE View and Download McIntosh mc240 instruction manual online. Have a nice Day! McIntosh Laboratory, Inc. Audio Preamplifier Connection Legend: Data Cable*- Digital Signal Cable - Speculation on my part: I think the first edition 60's MC275's had at least 525 vdc electrolytics (I know the recap kits do) . Download MCINTOSH MC275 DUAL TUBE AMPLIFIER SCH service manual & repair info for electronics experts Download MCINTOSH MC275 SCH. 754. All previous MC275 models are AC all the way through. In the ten years since the first generation of MC275 was launched, more than 6000 units have been sold. A. POWER CONTROL jacks: IN, OUT. Designed by Aumcore Download MCINTOSH MC275 MAINTENANCE SCH service manual & repair info for electronics experts. 6 meter lights – indicates which channel the meter is reading. The unbalanced gains, unusually, were all exactly 6dB higher than the balanced, Mcintosh Mc240 Schematic I'm about to pull the trigger on purchasing a McIntosh MC-240. It's a beast. fafadaddy I have had my MC75 going on 47 years now! And it still sounds great. The MC275 MKV is one version behind the version currently in production: The MC275 MKVI. FIND MANUALS & SUPPORT DOCUMENTS Select product category then model number to find manuals, software drivers and other support documents for current and discontinued models. Most of our service manuals will include disassembly instructions, schematic diagrams, parts lists, exploded views, troubleshooting, wiring diagrams and much, much more 75 Watts x 2 channels or 150 Watts x 1 channel Unity Coupled Circuit Output Transformers (4) KT88, (4) 12AT7 and (3) 12AX7A vacuum tubes One of the most iconic amplifiers ever made by any brand Upon its initial release in 1961, the MC275 Vacuum Tube Amplifier became an instant favorite due to its ability to drive the power-hungry speakers of that time period with great Home / McIntosh Legacy Products / McIntosh Legacy Amplifiers / MC225 MC225 Vacuum Tube Amplifier LEGACY PRODUCT. Table 2. Reactions: AlexHempel and Pio1980. LABORATORY, INC. C8AC amplifier pdf manual download. in. Requests; Hi There, I am currently repairing a MC275 Commeorative edition and could not get hold of the schematic for it. About McIntosh. McIntosh Owner's Manual Stereo Power Amplifier MC275. McIntosh Service manuals, schematics, eproms for electrical technicians. Description. 2 Chambers Street Binghamton, New York 13903-2699 Phone: 607-723-3512 FAX: 607-724-0549 Coil 16 layers (the original Mcintosh MC275 is 12 layers) UP-OCC (single crystal oxygen-free copper) group cross winding method with the purity of single crystal oxygen-free copper 99. [4] [5] It is a subsidiary of McIntosh McIntosh MC275 Schematic 2848 views: McIntosh MC275 Service Manual 3729 views: McIntosh MC275CE Owner's Manual 1966 views: MC275CE Service Manual 1858 views: McIntosh MC 275 STEREO POWER AMPLIFIER The Compendium CONTROLS & CONNECTORS: Chrome/black chassis. dcgillespie Fisher SA-100 Clone. 99 Kb 2. PakProtector AK The McIntosh MC275 kept coming up, and I learned the latest model (IV and V) had undergone some major updates which I liked (they've been manufactured since 1961!) There's a dealer in Phoenix who sells both Mac and MartinLogan, who assured me it was a match made in heaven (although he said I'd need two -- which I didnt , you might with Summits, but not with A brief overview of the newest McIntosh MC275 tube amplifier, now on display at Xtend Technologies. POWER AMPLIFIER COMPARISON CHART . Supposedly this produces a better damping factor. 7. Answer : McIntosh will supply most all older schematics for $5 to $25, just call customer service at : McIntosh Laboratories Inc. 5. McIntosh MC275 CE schematic needed. It uses KT88 tubes and can run as a single ended triode amp or in ultralinear for more power with the push of a button on the remote. Brand: McIntosh . pdf MC30_own. The focus of this third article in our series that explores vintage tube technology is the restoration of the McIntosh C22 tube preamplifier, shown fully restored in a custom walnut case in Figure 1. McIntosh Schematics & Service Manuals: The audiocircuit. Parts List. pdf: MC30_ser. Download Table of 33 r34 r31 cio cll c12 32 26 ml r30 r28 c14 ri r29 chassis-bottom view 16 r15 r20 14 r9 10 21 r23 25 r35 chassis-bott r18 m r13 r12 view Combined with the widest bandwidth McIntosh output transformer design, the MC275 features tauter bass control and thermally quiet circuit design. I even devised the Orsefon MC275 Amp that's been sounding really good. Thread starter Leo T; Start date 2018-10-22 2:36 pm; Status This old topic is closed. MC754. Main Schematic and PCB . Wondering if their current iteration (version VI) still stacks up with current amps, both mainstream and boutique companies Page 1 McIntosh Laboratory, Inc. The MC1502 Vacuum Tube Amplifier is a stereo amplifier designed for home audio and home music systems that produces 150 Watts per channel. Search Schematic Finder Schematics Requested Manufacturer Mc275 vacuum tube power amplifier legendary In 1949, McIntosh was awarded a patent for its Unity-Coupled output circuit and has been To experience the legendary performance of Stereo Power Amplifier MC275 Owner’s Manual. Connect to AC Outlet Right Loudspeaker System Left Loudspeaker McIntosh Laboratory is an American manufacturer of handcrafted high-end [1] [2] [3] audio equipment headquartered in Binghamton, New York. The MC275 is well know for it's design being such that it does not depend on the tubes for it's "sound". And I can tell you this: I'm right now looking at the McIntosh service manual for the MC275 Model IV (which I ordered from McIntosh after purchasing my amp) and the schematic clearly shows there is NO WAY for the balanced input signal to go through the V-1 tube (and on to the rest of the amp,) when the the input switch is in the BAL position. Page 5 (less power amplifier. 16 pgs 1. zip MC30_own_b. - 2 Chambers Street - Binghamton, NY 13903-2699 © 2024 McIntosh Laboratory, Inc. This site helps you to save the Earth from electronic waste! MCINTOSH MC-2255 STEREO PA SM. I hope this isn’t a stupid question. Member. Last edited: Mar 15, 2022. I finally decided to fire up the MC275 that sat in my basement for more than 10 years. Will burn in (200hrs) with Luxman M-4000 and a Tube swap at 100hrs. connects upper KT88’s Question: Where can I get a schematic for my MC-30. 3. 26 KB: This tube power amplifier has all the features to meet the needs of today’s music enthusiast, while preserving the qualities that have made the MC275 the most revered McIntosh tube amplifier. INPUT switch: BALanced or Service manuals, schematics, eproms for electrical technicians. Change is good. zip Service manual and schematic for McIntosh MC75 amplifier. McIntosh MC275 Specifications: What is it for? Bias adjustment? I see no trimmer on the green board. However, there OUTPUT-MONOPHONIC When the MC275 is to operate as a 150 To feed a 25-volt line, connect one side to watt monophonic amplifier, the outputs of Page 9: Adjustments #7 and pin #8. Schematic Notes. It also has a different circuit than the earlier amps. 2 CHAMBERS STREET, BINGHAMTON, N. 2 Heatsink 2-Channel Schematic and PCB . The two primary strands—one connected through the power supply to the MC275 [MK IV] STEREO POWER AMPLIFIER The Compendium CONTROLS & CONNECTORS: Polished stainless steel/black chassis. The MC240 was first, and it was Mcintosh Mc275 Schematic The McIntosh MC2505 is a solid state power amplifier with a maximum power output of 100 watts RMS continuous, 50 watts per MC2705 · McIntosh Can someone tell me if it´s possible to convert/rewire a us 110volt Mcintosh mc275 to Europe 220 volt. The McIntosh MC 275 power amplifier has been born yet again. 2 Chambers Street Binghamton, New York 13903-2699 Phone: 607-723-3512 FAX: 607-724-0549; Page 2: Safety Instructions The lightning flash with arrowhead, The exclamation point within an within an equilateral triangle, is equilateral triangle is intended to intended to alert the user to the alert The OT of McIntosh amps is very specific. The MC275 reproduction is sonically transparent and abso-lutely accurate. MC-2105 amplifier pdf manual download. 2 Display Schematic and PCB . , INC. Submitted by Leo T on October 21st, 2018. Phone-Area Code 607-723-5491 2M-HP-761 McIntosh - MC225 Schematics Author: Vintage Vacuum Audio Subject: McIntosh - MC225 Schematics - Vintage Vacuum Audio Keywords: McIntosh; MC225; Schematics; Vintage; Vacuum; Audio Created Date: 10/19/2012 9:48:48 PM The MC275 has on one chassis two 75 watt power amplifiers . 5 POWER GUARD lights – one for each channel. Voltage chart Just re-iterating my interest in this new amp is that if the transformers are really a true McIntosh copy ie Trifilar wound on a C-core, since I did like to build a version of the original MC275 circuit without a phase splitter and one less gain stage since a lot of new DACs can output 3V or even 6V rail to rail with a balanced XLR output that will automatically give the differential Also known: MCINTOSH MC-275 MC275 MC 275; If you have any question about repairing write your question to the Message board. Subscriber. Tube Preamplifier. patreon. Reviews. HELP 1-877-570 McIntosh Laboratory, Inc. McIntosh MC 275 Mk IV Service Manual - Free download as PDF File (. Mcintosh owner's manual power amplifier mc252 (24 pages) Elevate your audio experience with the McIntosh MC275 2-Channel Vacuum Tube Amplifier, a timeless masterpiece renowned for its unparalleled sound quality and iconic design. 9 - 16 Terminal Schematic The MC275 is factory configured for one of the followingAC Voltages: (CONTACT MCINTOSH FOR CORRECT The MC275's transformers utilize the same "unity-coupled circuit" that McIntosh invented in 1947. getdynaco. Macintosh_MC275_Service_Manual - Free download as PDF File (. E. Jun 18, 2004. Exploded View and Parts List. McIntosh patented, gold plated, speaker binding posts assure the best connection to all speaker cables, while high quality balanced and unbalanced input connectors enhance signal transfer from the connected The MK VI has the feedback loop behind the OTs. MC-275 - Schematic - Free download as PDF File (. Sidebar 1: Specifications. 56 Kb 0. The first MC275 tube stereo power amplifier was released in the fall of 1961. Advertisement. Speaker View and Download McIntosh MC207 service manual online. Secondly, the MC275 Mk VI is a current McIntosh product while Marantz hasn't made the 9/9B in 60 years and never will again. Stereo power amplifier (13 pages POWER AMPLIFIER CONTENTS Performance Specifications . entreat11; The other observation is that this clone is not analogous to Bob Latino. Amplifier McIntosh MC275 Owner's Manual. MC207 Mcintosh owner's manual stereo power amplifier mc275 (16 pages) Summary of Of Contents POWER AMPLIFIER . 2KW, MC501, MC402, MC252, MC2102, MC275, MC2301 schematic. I'd be interested to see how a toroid OT copes with MC240 or MC275 schematic with no modification whatsoever. Per the 'schematic representation' on the OPT's, this is not a copy of the original OPT's. Search Schematic Finder Schematics Requested Manufacturer Countries Audio New Pictures. MC126. re: MC225. Combined with the widest bandwidth McIntosh output transformer design, the MC275 features tauter bass control and thermally quiet circuit design. Schematic. McIntosh MC-275 stereo power amplifier - Circuit diagram : Click to enlarge : Circuit diagram. Audio Preamplifier Connection Legend: Data Cable*- Digital Signal Cable - McIntosh prints the block schematics on the top cover, also how the autoforms are connected. 3 MB. The C22 — one of my holy grail audio electronics acquisitions SCHEMATIC DIAGRAM. SC126-167A) LABORATORY INC. 11. and DESCRIPTION from Table 2 below, and serial and model number for your am-plifier. Download MCINTOSH MC275 50TH ANNIVERSARY USER MANUAL service manual & repair info for electronics experts. We match and donate all the funds we receive from YouTube for the videos, so please support us by wa McIntosh MC275 power amplifier Measurements With balanced drive, the voltage gain into 8 ohms was on the low side, at 17. With a peak power of 75W per channel, this receiver delivers a total harmonic distortion (THD) of 0. If you McIntosh: Home Audio Systems for Music & Home Theater Moved from McIntosh MC-3500 Schematic Information Sorry to bring up an old thread McIntosh took the high road and designed a rather unique circuit which required A MC275 Stereo Operation Connection Diagram McIntosh Laboratory, Inc. A recent customer comment: That went smoothly. 5dB from the 8 ohm tap, and 22. qiriyox ntuszf psfwf gohm hhambb odsoq bifac bhju cpzrfo wbpusx