Mcintosh mc240 tube layout 4kg / 56lb Jan 18, 2018 · The MC240 has on one chassis two 40 watt power amplifiers. Apr 29, 2015 · McIntosh power amps tend to be "tube roller resistant" because of the nature of the circuitry, and tend to work well with any tube of the correct pinout, heater voltage and with characteristics remotely within the manual "bogey" spec. Tube cage has large square openings. 25"W x 8"H x 10. S. AC Operated Il Tube Stereo Amplifier 105 AC, 50-60 Cycles RATING 160 Watts, l. Mar 5, 2021 · There is no rectifier tube in an MC240. Documentation. McIntosh MC240 Owners Manual. Mcintosh Mc240 (late) // Vintage / Stereo Tube Amplifier / Recapped & Restored $5,499 Mark Levinson No. To greatly extend tube and component life a thermistor in the MC240 limits current surge produced when the equipment is turned on. Filter by model. Dimensions 17. Does your schematic cover that range, if so I would really McIntosh MC240 Original Sales Brochure. I bought this amp in 2021, with a companion McIntosh C22 preamplifier. MC240 amplifier pdf manual download. Fuse is on the vertical front. Two octal receptacles on angled front. McIntosh MC240 Schematic Parts List MC240. Filter by condition May 11, 2012 · Price Paid: $1750 for MC240 The Mcintosh MC240/MX110 combo is the "Fred Astaire and Ginger Rogers of vintage tube audio -- pure honey". 5% THD, 56 pounds/25. Crates / 1646-7 Apr 15, 2013 · He was a well known recording engineer/producer for many years before retiring and refurbishing vintage tubes amps. McIntosh MC240 Owner's Manual McIntosh MC240 Service Manual. MC 240 amplifier pdf manual download. Speaker terminal strips are on the left of angled front. One of the first things I notice is that this amp is pretty complex. The SkyFi Testing Process for Amplifiers (Tube): We start with a visual inspection of all internal components to make sure there are no signs of stress or aging. Apr 30, 2021 · My Dad passed away from ALS and I’m evaluating some of his things for my Mom. This is a 40W x 2 (stereo) tube amplifier produced from 1960-1969. McIntosh MC240 Service Manual. 5. - 2 Chambers Street Tube complement 4x 6L6GC (output), 2x 12AU7, 2x 12BH7, 3x 12AX7. This listing also includes a rare and correct McIntosh tube cover (tube cage). Broke out Omnigraffle & started on the layout and realized the schematics I have are earlier than my amp. 33h // Solid-state Monoblock Amplifiers / Orig. Regarding the power tubes, of course you won’t get low-THD full 55watts from mediocre tubes. MC240 Vacuum Tube Amplifier LEGACY PRODUCT. View and Download McIntosh MC 240 owner's manual online. It features one Genalex B759/12AX7 Gold Lion, two Genalex B749/12AU7 Gold Lion, two 12BH7EH GOLD and a quad TUNG-SOL 7591A —ALL are platinum matched and come with factory 90 day warranty. McIntosh MC240. Especially if you have high efficiency speakers. 6. Estimated Value for McIntosh MC240 40-Watt Mono Tube Power Amplifier on Reverb. He does McIntosh and Fisher and Eico and many other famous, mostly U. Y. This particular Mcintosh MC240 amplifier was purchased with its matching MX110 from the original owner's wife. Indiana View and Download McIntosh MC240 owner's manual online. 7 Amp. The 240 is the very embodiment of classic hifi; it's a dream amplifier and has been since its first introduction in 1960. Tube cage has small round openings. , vintage tube amps. McIntosh Model MC-240 (Serial ilP001 and Mc INTOSH MODEL MC-240 McIntosh Laboratory, Inc. 5% THD at any frequency from 20 ~ 20,000 Hz, measured output 47W at 1 kHz at <0. Features: Stereo 2 x 40W; 438 x 273 x 203mm / 17-1/4 x 10-3/4 x 8" 25. In addition to use as a stereo amplifier, the flexibility of the MC240 permits it to be used as a monophonic amplifier that delivers 80 watts, or as two separate 40 watt amplifiers with each channel amplifying completely separate programs, or as two amplifiers for use with an electronic This listing also includes a rare and correct McIntosh tube cover, plus a matched set of 6L6GC tubes in the output stage. However, don't be fooled into thinking an unrestored e May 19, 2006 · Started stripping the MC240 over the past few evenings. McIntosh MC240 Schematic and Parts List. All of these PDF files are available for free download. McIntosh Model MC240 Power Amplifier (1965) The McIntosh MC240 stereo amplifier is a classic from the golden years of tube audio, a top seller in its time and prized nowadays by collectors and audiophiles. This permits each tube to operate alternately somewhat over half the time. Released in the early 1960s, this 40-watt-per-channel tube beast is still flexing in systems across the globe, long after most of its contemporaries have bitten the dust. She said the two units were purchased new together in the 1960s. Apr 29, 2020 · New 9-pin tube sockets ordered. Page 8: Input-Mono INPUT-MONO OUTPUT-MONOPHONIC When the MC240 is to operate as an 80 The shielded cable from the program watt monophonic amplifier, the outputs of source is plugged into the jack marked the two channels combine to produce a MONO This is arguably the finest tube set available in new tubes today for the McIntosh MC225. Two tubes are arranged in a balanced circuit. @SaturationPt my amp starts with 40G. I know how to test and replace caps and can also get a tube tester. MC 240 (LATE) “Spotting features”: 1. Speaker terminal strips are in the center of angled front. , INC. McIntosh MC240 Original Sales Brochure. No circuit mods. I'm improving, but I do find that I really struggle to get the layout right going from just a schematic. The SkyFi Testing Process for Tube Amplifiers: We start with a visual inspection of all internal components to make sure there are no signs of stress or aging. Finish Chromium and black. Manufactured 1960 - 1969; 40 Watts x 2 Channels, 80 Watts x 1 Channel McIntosh Laboratory, Inc. Side McIntosh and 240 nomenclature has thin brushed metal letters with black drop-shadow. The History of McIntosh McIntosh Model MC240 Technical Description The following description is from the McIntosh MC240 Owner Manual: The patented McIntosh Unity Coupled circuit and output transformer have established McIntosh amplifiers as the unchallenged leaders in the audio field. We totally agree that if you don't need the extra 40W or 50W from the MC240 or MC275, then this is your best choice. The History of McIntosh. This is a 40W x 2 (stereo) tube amplifier produced from 1960-1969. McIntosh MC240 Maintenance Manual. To make things as simple as possible when it comes time to reassemble, I took many, many digital pictures along the way and also drew as many pictures, diagrams, and other notes as possible. In addition to better voltage regula-tion, the silicon rectifier allows even higher operating efficiency, cooler operation, and longer amplifier life. Note well that unless the power tube sockets are rewired it is a big big no-no to plug EL34s in there, because Here you will find our collection of McIntosh tube amplifier schematics. Created Date: 10/15/2006 10:00:14 AM Many audiophiles hail the McIntosh MC225 as the best sounding vintage tube amp from McIntosh ever. McIntosh MC240 (rated 40 watts continuous output per channel with less than 0. Internally we replaced every critical component while carefully maintaining the original sonic quality. 6L6GC ECC82 6L6GC ECC83 ECC83 ECC83 FOLDER 6 12BH7A ECC83 12BH7A HOWARD W. Weight 56 lbs. One octal receptacle on angled front. 4 kg, measured 145 watts idle power draw, about $3,500 used). McIntosh Tube Amplifier: MC240 Year of construction: 1960 - 1969. I am of the belief that the most important tube to preserve good SQ is the preamp tube, the 12AX7 under the tube shield. McIntosh MC240 Owner's Manual. 4. His refurb'd amps are put strictly back to stock form. Rectifier Solid State. Is there much risk of damage if I do these things before powering on The McIntosh MC240 is the amplifier equivalent of a classic muscle car: big, bold, unapologetically old-school, and guaranteed to make modern gear look like disposable tech toys. Side McIntosh and 240 nomenclature has thick chromed letters and no drop-shadow. 3. Countless hours and hundreds of dollars in parts went into this restoration - its working perfectly like the day it left the factory if not better. SkyFi Restoration Notes:This MC240 underwent an extensive electronic restoration in house. The MC240 operates on any line voltages between 105 volts and 130 volts, 50 cycles to 60 cycles. 75"D. , 2 Chambers Street, Binghamton, N. MC 240 (EARLY) - Sold from July 1960 - July 1961. 2. Includes material, year, finish. Compared to full time operation of the tubes, the push-pull method reduces heating and permits more power from a given type of tube. Fuse is on the angled front. SAMS & CO. Tube complement 4x 6L6GC (output), 2x 12AU7, 2x 12BH7, 3x 12AX7. Before 1947, low distortion at high power and high efficiency was impossible. One of the items is a MC240 Tube Amp that hasn’t been powered on in many years. In all of that, none are more iconic than the McIntosh MC240 shown below. At the time of this writing in 2024, there are more than 80 tube amplifiers featured here on my hifi website. MC 240 (EARLY) “Spotting features”: 1. Indianapolis 6. The thermistor is a special type of resistor. zvwh khc rfsaj tbxe kkdqzt pckux xpokge izoz pilrqlk jat
Mcintosh mc240 tube layout. 25"W x 8"H x 10.