Mcintosh mc2300 driver boards transistors explained

Used mcintosh mc2205 stereo power amplifier mac mc2205. This website is not affiliated with or sponsored by mcintosh. I found that one of the driver boards was original while the other had the service bulletin performed. With most of the amps in the companys current catalog relying on solidstate transistors, mcintosh went for a different approach these days, designing its first. Discussion in mcintosh audio started by whabamp, nov 28, 2014.

Used mcintosh mc2300 stereo power amplifiers for sale. Mcintosh was on the second floor of the old downtown building. Mcintosh mc2300 amplifier for sale canuck audio mart. Output transistors used such units as biamp, marantz, mitsubishi, nad, onkyo, pioneer, rotel, sansui, technics, yamaha and others. Garcia later used a twin reverb preamp out into a different model mcintosh power amp for a few years. Mcintosh mc2300 manual solid state stereo power amplifier. In the mc2000, there was an emitter follower between the driver tubes and the output stage. Help me pick a preamp for mcintosh mc 2300 steve hoffman. So while i knew that many audiophiles hold tubed mcintosh gearespecially the early designsin very. Meanwhile, engineering was working on the first 12volt car amplifier. I am selling my mcintosh c2300 in perfect condition, with new original tubes, 220 volts. View and download mcintosh mc2300 service manual online. So while i knew that many audiophiles hold tubed mcintosh gearespecially the early designsin very high. It can be utilized either as a 300wattperchannel stereo amp, or a 600watt monoblock, and was rated by its manufacturer as being able to produce this amount of power continuously, with very.

Corderman joined mcintosh and was placed in charge of engineering, research and development. Driver and protection circuitry is stentorian in control and protection but musically unobtrusive as possible. Never connect or disconnect inputs or outputs while the amplifier is turned on. Remove the driver plugin circuit boards from the power amplifier. Amp has been used in a home environment all its life so it shows rather well. New power supply filter new bias supply and adjust new capacitors in signal path check all resistors full check out for power and distortion mx110 and mc225 full power supply and audio upgrades.

Mcintosh mc2300 driver boards transistors diyaudio. Nov 27, 2012 mcintosh mc2205 vintage audiophile stereo power amplifier mc2205 amp. Offering products for twochannel stereo sound systems and multichannel home theaters with surround sound, mcintosh continues to define the ultimate home audio entertainment experience for discriminating listeners around the world. The application in this case is mcintoshs music server interface which is based on the vxworks operating system, albeit a modified version. Used mcintosh mc2205 stereo power amplifier mac mc2205 amp.

Jul 02, 2014 mcintosh mc2300, mcintosh c39,arcam cd37,wharfedale e70. New power supply filter new bias supply and adjust new capacitors in signal path check all resistors. There is vintage and new gear mostly mcintosh everywhere. Since the ms300 does not have a pc architecture, its specs are a bit different than what you would expect, but housed within the chassis lurks an ibm power pc processor running at 266 mhz. When i was back home over the summer, i had my c33 serviced there. Transistor crossreference chart showing stereo receiver amplifier models that use the same output transistors. The mclntosh mc 2300 is a high quality, extremely high power, solid state stereo amplifier. Never connect or disconnect inputs or outputs while the. Mcintosh mc2300x2, sansui ba5000, sansui au7900, altec 511b horns with 902 drivers, altec 511e horns with 29116b drivers, 815 ev drivers. Is mcintosh mc2300 a good amp for magnepan mgiiia audiogon. I think that these boards are the same as many mc amps i know that the drivers q112114 are 2n5320 and 2n5322 but what are the q108q110 and q102q104 do someone has an idea about the original parts numbers or replacement parts numbers that have the same characteristics as original parts.

Unfollow mcintosh mc2300 to stop getting updates on your ebay feed. If the driver boards have round, saucer looking heat sinks the amp has the updated predriver transistors, the mandatory upgrade we needed to do at. Service manuals, schematics, eproms for electrical technicians. Mcintosh mc2505 the solid state amplifier that change the world as any vinyl enthusiast will agree, the pure audio enjoyment of this hobby will only go as far as the limitations of your system. Mcintosh mc 2300 300 watt per channel amplifier for sale on ebay by username jimjam041 or in ebay store jimjamsvintagemusic. Unfollow mcintosh amplifier to stop getting updates on your ebay feed. Is the dual differential amplifier driver labeled the. Later, mcintosh used a mpsa05 2171 and mpsa55 2172 pair as replacements. This is a pair of 2070 fully tested, working date code 1979.

The mc2300 has lots of watts, typically about 450 per channel and will drive just about any speaker due to the flexibility of the output autoformer which has taps for every speaker impedance. One very good 300wattch mcintosh mc 2300 power amplifier. Device owners manual service manual brochure catalog miscellaneous pictures device. For the first time, the mac circuit has appeared in fully modern stateoftheart designs, delivering clean, clear sound, natural harmonics, extended highs, and bass with balls. Internally, the c 27 major circuit board contains all of. There was a service bulletin for the mc2100mc2105 mc2300 that changed a couple of transistors as well as a few resistors and capacitors. Im using a mcintosh c33 with my mc2300 and it sounds great. My dad used fisher, bogen, leak, and ampex tubed electronicsand, at one time, even homebuilt speakersto keep the house filled with a steady, enriching flow of mozart. The mc2300 is a solidstate power amplifier which was built by the american highend audio company mcintosh, and sold between the years 1971 and 1980. Mcintosh 59 all 61 products power controllers 1 product integrated amplifiers 7 products preamplifiers 10 products amplifiers products tube amps 8 products headphone amplifiers 1 product dac 1 product media streamers 5 products tuners 1 product turntables 4 products cd players. One amp was missing the meter driver board and one output driver board, the other amp was missing both driver boards.

Siliconplanar transistors were selected because of their high thermal stability, low leakage, low noise, and superior high frequency response. Newer and better power transistors rebuilt driver boards better power caps every circuit checked and newerbetter parts installed, including resistors, connectors and the use of shielded wiring where necessary too many to list. Also, it weighs about as much as a twin reverb by itself. It can be utilized either as a 300wattperchannel stereo amp, or a 600watt monoblock, and was rated by its manufacturer as being able to produce this amount of power continuously, with very little less than 0.

Mcintosh built some outstanding quality gear back in those days. Mcintosh mc2205 vintage audiophile stereo power amplifier. Get all the newest and latest information on the new mcintosh sol id state. To purchase mc2300 spares or accessories, please contact the company via their website or visit an. Mcintosh expanded into the car audio and home theater areas since the clarion purchase.

Mc 2300 filter caps audiokarma home audio stereo discussion. While everyone has varying opinions on what is the most integral link in the audio chain. Seems i forgot to write that power amp is mcintosh mc2300. Founded in 1949, mcintosh is known for offering distinguished home audio systems that deliver the ultimate experience in music and film. Stereo mo no electrical specifications 4, 300 rms 8 or 16 600 rms ohms. It was the go to for the grateful dead and their famous wall of sound. They do excellent repair work, and they tell you in person and in writing exactly what they replaced. The mclntosh mc 2300 solid state stereo power amplifier. One unit took me about 2 years but well worth the money and time.

This auction is for a very rare and collectable vintage mcintosh mc2300 power amplifier. Mcintosh laboratory part 1 a history 19421967 by roger russell. Mcintosh mc2300,mcintosh c39,arcam cd37,wharfedale e70. Before i go powering this unit up, id like to know what fried the transistors to begin with. Jun 22, 2014 mcintosh mc 2300 300 watt per channel amplifier for sale on ebay by username jimjam041 or in ebay store jimjamsvintagemusic. This is one of the most famous power amplifiers every produced. It has been serviced by syd beaumont at ideal innovationstire kickers stay away. I also noticed that the two left transistors have been replaced at some point because the part numbers and date codes dont match. Because of the high power available it is necessary to emphasize some prudent and safe operating conditions. I have a mc2300 in for service with a bad driverboard and need help locating suitable replacements for an pnp npn pair. A mac amp whether recreating the delicate passage of a violin concerto or the thunderous brute force slam of a full tilt symphony delivers with ultimate fidelity accuracy and reliability. Transistors in mc2100, mc2105, and mc2300 power amplifiers. This amp will be happy if you can run a dedicated ac line to it from your fuse box. Repair and upgrade examples mcintosh home audio for sale.

Mcintosh mc2200 manual stereo power amplifier hifi. I have to replace the transistors in a mc2300 driver boards. Mcintosh misc diagrams, schematics and service manuals download for free. Sadly the amplifier is in a nonworking condition with some parts missing, but it will be supplied with a colle. Free mcintosh misc diagrams, schematics, service manuals. The 2032 is similar to a 2n3645 and according to my mcintosh info, is an approved replacement. If you could find one in sweden, or have one shipped, thats within your budget, i think you would.

Cofounders frank mcintosh and gordon gow came into electronics from world war defense communications jobs and later operated a consulting firm in washington, d. Mcintosh transistor pair 2070 motorola mc2300, etc. Each output stage uses 6, 15 amp single diffused power transistors pro viding an. Various mcintosh m2 03 mcintosh m2 02 mcintosh ma230 brochure. It consisted of four transistors per channeltwo on the positive side, two on the negative. My reading has me to believe that mcintosh lowered the filter cap specs. This amplifier needs no introduction and is priced for a quick sale.

Yup, they are right up the street from the mcintosh factory. Some speaker designs have impedance characteristics that may dip to as low as 1. Sure enough, i was peaking out at about 100w, even with the 92dbsensitive triangle antals. Mcintosh the compendium vintagemacs mcintosh compendium has moved. It works fine as a guitar power amp, but is more clean than most guitarists would probably want. Mcintosh mc2300 stereo power amplifier for sale canuck. Mcintosh diagrams, schematics and service manuals download for free.

Soon after that, carl van gelder and i were installing speakers in an infiniti q45, the first of many prototype auto installations. Free mcintosh diagrams, schematics, service manuals. One of the pioneers of audio electronics, mcintosh laboratory got started with an idea. Any pre amp will work with the mc2300 which is a true classic amp. Mcintosh mc2205 sm service manual download, schematics. Discussion in audio hardware started by erikullvin, may 23, 2014. The mcintosh ma252 is a oneofakind hybrid amplifier. This site helps you to save the earth from electronic waste. Mcintosh mc2505 the solid state amplifier that change the. If there was any doubt about the greatness of the mcintosh unitycoupled output circuit, the mc2102 and the mc2000 should settle the matter. Three transistors are used in each channel of the phono preamplifier section. Mcintosh mc2300 power amplifier service manual contents. I think that these boards are the same as many mc amps i know that the drivers.