hifi engine

Manual Library / McIntosh

McIntosh MA5100

Solid State Stereo Integrated Amplifier (1966-72)

add a review add a review

McIntosh MA5100

Specifications

Power output: 45 watts per channel into 8Ω (stereo)

Frequency response: 10Hz to 20kHz

Total harmonic distortion: 0.25%

Damping factor: 80

Input sensitivity: 2mV (MM), 300mV (line)

Signal to noise ratio: 70dB (MM), 75dB (line)

Output: 300mV (line)

Speaker load impedance: 4Ω to 16Ω

Semiconductors: 23 x diodes, 34 x transistors, 2 x TRIAC

Dimensions: 403 x 138 x 368mm

Weight: 11.3kg

Finish: anodized gold and black front panel

Year: 1966

Downloads

Related Catalogues

Price List

If you have any problems opening files please read the download FAQ. All files are provided under strict licence and reproduction without prior permission or for financial gain is strictly prohibited.

If you have additional documentation please consider donating a copy to our free archive.

Comments

phread's picture

re: MA5100

I have had my MA5100 for several years. I recently performed some upgrades to it and am loving it even more. Upgraded/replaced all the large caps in the power supply. Replaced the speaker terminals with 5-way binding posts (yes I had to do a little bit of drilling). Replaced the incandescent bulbs with LEDs to prevent heat from bubbling the glass. Started replacing the RCA jacks with nice gold-plated ones for better contact. Replaced the power cord since the original one was getting brittle. Now before the purists criticize me modifying a vintage piece of audio equipment, mine had a painted chassis when I got it to cover a significant amount of rust. I figured that since it wasn't stock when I got it, I had some leeway in making improvements.

Thanks for this site which provided me with the necessary schematics to get the job done!

Cheers,

Phread

re: MA5100

Agree . I am not a “keep it original” guy . An amplifier is to hear it. If it does not sound good: what is the point?

re: MA5100

Hello

I have one as well and faced the same issue with the can caps I replace one after one

Otherwise it is sounding nicely and I associate it with a MR77 tuner a perfect fit
The 45 watts are enough for my installation

Still to be done the replacement of the volume control as the two channels are unbalanced

I am still trying to understand the use of the phase switch!

Overall very satisfied I like the sounding

Cheers

Alain

re: MA5100

I just restored and recapped an early MA5100. I used a turret board that I populated with catefully chosen values including the two diodes. I’dlike To post a photo and will when I figure out how

re: MA5100

I just restored and recapped an early MA5100. I used a turret board that I populated with catefully chosen values including the two diodes. I’dlike To post a photo and will when I figure out how

This website is not affiliated with or sponsored by McIntosh. To purchase MA5100 spares or accessories, please contact the company via their website or visit an authorised retailer.