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Really nice C26

pathologymd said:
I have a C26 and MC2105 and it has been a wonderful combination over the years.
I must say the C26 is doing a fine job on phono. I'm listening from 10-12 o'clock on the C26 volume control, and the noise just isn't objectionable to me. I had actually bought transistors to update the phono section, and still may, but right now it is making beautiful music.
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Have a look at the C26 specs on Roger Russell's site.. http://www.roger-russell.com/preamps.htm#c26

..especially the S/N specs. It sold from 1968-78, and had a Center Channel.

As for the MC 2105, and I noticed from web searches that Soundco's last `incorporation´ was dated April 1970, and the company had existed for 45 years, 11 months. Anyway the point is, and I remember the sound room at Roosevelt Ave location in the early 70's where salesman Tim Reardon would play Emerson, Lake & Palmer From The Beginning on LP (vinyl) through the MC 2105.. one of his standard demos.

https://en.wikipedia.org/wiki/From_the_Beginning_(song)

Tim was the first of the `long hair´ employees compared to the old timers like pop from the 1940's and 50's crowd. Pop died in 1994 at the age of 73.
 
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Pathologymd/Team,
I updated the electrolytic quite some time ago and want to replace the Mylar caps with polypropylene. What caps did you use? In particular the large white caps (0.47uF). I restuffed one of he power supply cans and have not gotten around to the other one. I also noticed two black caps on the mode selector switch and did not know if these were worth replacing.
Thanks
 
Hello,

I replaced the caps many years ago, but they were not exotic. I used metallized polypropylene but the exact brand escapes me. Possibly Panasonic or Cornell Dubilier.

William
 
Are the white square (mylar caps?) part of the signal path? Would a wima equivalent be a suitable replacement. Do the originals hold up or should they be replaced along with the other caps.
 
Yes and who knows for sure. Mac originally used two different generation of Epos caps in these boards and it is not uncommon to find them intermixed in the same unit. That tells you what the Mac engineers thought.......

My test bed C26 has had the power supply rebuilt with high voltage Nichicon CS(M) caps with bypass caps added at the boards. I have one discrete tone module built but do not have it installed yet.

Just got it back from a loan with a positive review except for some excessive input crosstalk. See, when you lower the noise floor other things start to show up and new challenges present themselves.
 
I beleive I will replace the smaller mylars with Wima MKP 10 or MKP 4 caps. The larger 0.47 uF caps with axial caps where I can fit them in. Not sure what brand yet. Nothing exotic. I wonder how the Dayton Audio DMPC caps would be in the signal path? I beleive they would fit but beleive most use these in their speaker crossover circuits.
 
I've had my C26 since 7-8-1972 and paid $349.00 plus $29.00 for the L-12 cabinet. It was serviced at McIntosh Labs in 2007. Still sounds perfect. MC2505 bought 8-8-1972 for $449.00.
 

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mark506 said:
I've had my C26 since 7-8-1972 and paid $349.00 plus $29.00 for the L-12 cabinet. It was serviced at McIntosh Labs in 2007. Still sounds perfect. MC2505 bought 8-8-1972 for $449.00.
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When I bought my c28 and mc2105 amp around the same time as you, I didn't realize how 45 years later the biggest problem I would have was the weight of the 2105. Is the 2505 any easier if you have to move it? Sounds like a great system and probably every bit as enjoyable all these years!
 
gbkirsch said:
When I bought my c28 and mc2105 amp around the same time as you, I didn't realize how 45 years later the biggest problem I would have was the weight of the 2105. Is the 2505 any easier if you have to move it? Sounds like a great system and probably every bit as enjoyable all these years!
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The MC2505 weight is 38 pounds net, 53 pounds in the shipping carton. It is heavy, but not too hard to move. The 2505 is still one of the most attractive and best sounding amplifiers McIntosh has produced.
 
mark506 said:
The MC2505 weight is 38 pounds net, 53 pounds in the shipping carton. It is heavy, but not too hard to move. The 2505 is still one of the most attractive and best sounding amplifiers McIntosh has produced.
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Right, I think the 2505 was more expensive at the time and I was stretching to get what I got. In hindsight, I would have definitely preferred the 2505. However, there are few things in this life i get more pleasure from. Just happy to have figured this out long ago.

edit: I cant remember if I have this correct exactly, so long ago but having Terry Dewick repair my 2105 was hopefully the last time. I don't think I could take it to him again in the future and I think both of us will have an increasingly difficult time lifting this monster. Hooked up to my Mac are ESS AMT 3, Rock Monitors. They weigh 116 lbs each. I can remember how my wife and i would lift them and move them from one room to another when I moved the stereo. Now, they are staying put, cant even think about lifting them...
 
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