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. This is the first installment of the mcintosh mc30 rebuild. I can only find a nte cross reference and im not going there if i can. Mcintosh mc2300 driver boards transistors diyaudio. To purchase mc2300 spares or accessories, please contact the company via their website or visit an. Never connect or disconnect inputs or outputs while the amplifier is turned on. Founded in 1949, mcintosh is known for offering distinguished home audio systems that deliver the ultimate experience in music and film. Because of the high power available it is necessary to emphasize some prudent and safe operating conditions. Im using a mcintosh c33 with my mc2300 and it sounds great. I think that these boards are the same as many mc amps i know that the drivers q112114 a mcintosh mc2300 driver boards transistors diyaudio home forums amplifiers solid state. My reading has me to believe that mcintosh lowered the filter cap. I have a mc2300 in for service with a bad driverboard and need help locating suitable replacements for an pnp npn pair. In general, mcintosh are well built and most owners take care of them becuase they are expensive.
Amp has been used in a home environment all its life so it shows rather well. The mclntosh mc 2300 solid state stereo power amplifier. One unit took me about 2 years but well worth the money and time. Some speaker designs have impedance characteristics that may dip to as low as 1. Thank you ps, this photo is from a previous auction, but. Later, mcintosh used a mpsa05 2171 and mpsa55 2172 pair as replacements.
This website is not affiliated with or sponsored by mcintosh. Mcintosh diagrams, schematics and service manuals download for free. Would this be a downgrade from the integra considering the age. Mcintosh mc30 rebuild first installment turret boards.
Rated at 100 rms watts per channel into 4 or 8 ohms. In the mc2000, there was an emitter follower between the driver tubes and the output stage. The mclntosh mc 2300 is a high quality, ex tremely high power, solid state stereo ampli fier. Mcintosh mc2300 stereo power amplifier for sale canuck. With the mc452, the latest circuit components are deployed in the classic mcintosh quad balanced design that. Mcintosh mc2300,mcintosh c39,arcam cd37,wharfedale e70. In total, 48 mcintosh mc2300 amplifiers provided a total output. The idea here is to do the same thing to a pair of mcintosh mc30 monoblocks as i did to the a pair of heathkit w5ms if you recall i took a pair of rusty heathkits and rebuilt them to better than new specifications using nothing but the best parts. I had them for sale on the website here and i could of sold 4 pair since then. Im thinking about searching for either a mc2300 from the 70s or a mc2500 from the 80s. Since counterfeit mj15003 exist these days, i figured id swapped these 3 as well as the other 9 with known genuine nos mj15003 that i had on hand.
Ive sold the matching c30 preamplifier, so this is just sitting in the box waiting for someone to enjoy it. Internally, the c 27 major circuit board contains all of. One bank had obviously been repaired with mj15003 at some point. Ive done lots of power amp repairs, but theyve all been modern amps with exact parts available. View and download mcintosh c2300 owners manual online. However, i would have 240 volt equipment in australia to avoid damage 110 volts and not needing a step down transformer. 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. Would this be a good way to dip my feet into a stereo amplifier. This amplifier was in my main system for several years and ive been hesitant to let it go since ive found this to be the most pleasant sounding of the open chassis mcintosh amplifiers.
I want to cross from the manual and buy those as well. Unfollow mcintosh mc2300 to stop getting updates on your ebay feed. Transistors in mc2100, mc2105, and mc2300 power amplifiers. Repair and upgrade examples mcintosh home audio for sale. It was the go to for the grateful dead and their famous wall of sound.
Stereo mo no electrical specifications 4, 300 rms 8 or 16 600 rms ohms. Mcintosh mc2102 stereo tube amplifier, complete tube. Except a mcintosh mc2300, which can handle one ohm loads. Audio classics buys and sells the finest in home audiovideo equipment. This coveted and rare vintage receiver features 100 rms watts per chanel into 4 or 8 ohms, push button switches, cd, fm, am, tv avi, laser and phono inputs, equalizer frequency, monitor, tape copy, volume, mono, lockout, speakers 1, 2 and 3 and more. Unfollow mcintosh amplifier to stop getting updates on your ebay feed.
The 2032 is similar to a 2n3645 and according to my mcintosh info, is an approved replacement. 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. This is one of the most famous power amplifiers every produced. One very good 300wattch mcintosh mc 2300 power amplifier. Does anybody know the 2n number on the transistors used and the opamp comparator number that is used on theses two boards thanks don aka hifidoctor p. Mcintosh mc 2300 300 watt per channel amplifier for sale on ebay by username jimjam041 or in ebay store jimjamsvintagemusic. It consisted of four transistors per channeltwo on the positive side, two on the negative. Free mcintosh diagrams, schematics, service manuals. The mclntosh mc 2300 is a high quality, extremely high power, solid state stereo amplifier.
This is a pair of 2070 fully tested, working date code 1979. This is the amp they called the jerry garcia mac as the gratefull dead used these amps to fill a stadium with sound. Mc 2300 driver board audiokarma home audio stereo discussion. Transistor crossreference chart showing stereo receiver amplifier models that use the same output transistors. They can fail open when an output transistor fails. Mcintosh mc 275 amplifier service manual serial no 2751 to 27510147 and 100e1 and up photo copy. Mcintosh mc2200 manual stereo power amplifier hifi.
This amplifier needs no introduction and is priced for a quick sale. A complete list of tubes is given for tube amplifiers. It has been serviced by syd beaumont at ideal innovationstire kickers stay away. Further correction, there are quite a few amps that can handle a 1 ohm load. Used mcintosh mc2300 stereo power amplifiers for sale. Get all the newest and latest information on the new mcintosh sol id state equipment in the. 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 amp clinics back in the 80s. To purchase mc2200 spares or accessories, please contact the company via their website or visit an authorised retailer. I have to replace the transistors in a mc2300 driver boards.
Mcintosh driver board transistor replacement narkive. I have a second hand integrated mcintosh ma 6900 and a pair of power amps mc 50 and are vintage. Dont forget that the insulators and heat sink compound yucky white goo are very important. Sure enough, i was peaking out at about 100w, even with the 92dbsensitive triangle antals. Mcintosh driver and crossover history plus service information. It has been owned and well cared for by a professional electronics technician.
View and download mcintosh mc2300 service manual online. Mcintosh aa 2 acoustic analyzer starting with serial no. The outputs consist of twelve mcintosh 070 to3 npn transistors. 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 mc2300 is a solidstate power amplifier which was built by the american highend audio company mcintosh, and sold between the years 1971 and 1980. Output transistors used such units as biamp, marantz, mitsubishi, nad, onkyo, pioneer, rotel, sansui, technics, yamaha and others. One mcintosh mc2102 all tube amplifier, 100w of glorious tubes this beauty is part of my private mc collection and im sad to see it go as they are becoming more and more difficult to source. Mcintosh driver and crossover history roger russell. Mcintosh mc2300 amplifier for sale canuck audio mart. If you havent been to my main page, please check it for mcintosh related sites and personal information for information and prices on the current line of products, contact mcintosh laboratory, inc. Use hifi shark to monitor pricing and global availability. The use of 10 complementary connected output transistors per channel, allows not only full power output into normal loads, but extra high current output to drive uneven speaker loads.
Mcintosh mc2300 power amplifier in very very good condition. Remove the driver plugin circuit boards from the power amplifier. Mc2300 power amplifier 9 ftj m c 230 0 o p r e raige service information starting with serial no. Mc 2300 filter caps audiokarma home audio stereo discussion. 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. Ive read some online threads that say 70s mcintosh power amps sound better than the 80s power amps. I have a mc2300 in for service with a bad driverboard and need help. Some of the missing numbers in my list are for drivers that were not used. If you could find one in sweden, or have one shipped, thats within your budget, i think you would. Im figuring if the mcintosh master says theyre good to go, than they are good to go. Some early drivers were made by united speaker systems and may not have a label. At 450 watts per channel, the mc452 is the most powerful mcintosh stereo amplifier and utilizes the latest advancements in circuit and cosmetic design.