Something borrowed, something bue.

Davemcc

Davemcc

Audioholic Spartan
Borrowed McIntosh, that is. I've managed to score a long term lend of an MC-2105 from a family member. This unit was purchased, I believe, in 1970 and works perfectly except for one switch that is most likely just dirty. As various boxes get unpacked, this should be followed by a matching preamp, tuner and some type of scope for FM signal (?). As a package, this should make for a nice 2ch system for the next couple of years.

I currently have the MC-2105 hooked to the L/R of my Denon driving the Era D5's. Not to stoke the fires of controversy, but I do find a difference in tone versus the Denon especially at high levels. I find it hard to describe the difference in tone, but I find the highs to be not nearly as bright. I'm going to go out on a limb and say that perhaps this is the way things are supposed to sound, vs an overworked multichannel amp kicking out harsh high frequency tones at high volume levels. It is also less fatiguing. I just watched an entire Star Wars episode quite loud without the urge to turn the volume down due to harshness or distortion.

Anyway, I thought it was a neat little score that was worth experimenting with.
 
highfihoney

highfihoney

Audioholic Samurai
I currently have the MC-2105 hooked to the L/R of my Denon driving the Era D5's. Not to stoke the fires of controversy, but I do find a difference in tone versus the Denon especially at high levels. I find it hard to describe the difference in tone, but I find the highs to be not nearly as bright. I'm going to go out on a limb and say that perhaps this is the way things are supposed to sound, vs an overworked multichannel amp kicking out harsh high frequency tones at high volume levels. It is also less fatiguing. I just watched an entire Star Wars episode quite loud without the urge to turn the volume down due to harshness or distortion.

Anyway, I thought it was a neat little score that was worth experimenting with.
Hi Dave,i too hope your thread dont stoke any fires because you heard a difference,that gets old.

Congrats on your new vintage system,and yes its a score,so you know any part/switch you might need (including a new glass face) can still be ordered directly from Mcintosh if a good cleaning dont help the problem,if you end up using a spray contact cleaner to clean the switches be carefull,keep in mind that the black on the glass face of Mac gear is silk screened on the back of the glass,excessive cleaners that are allowed to sit on the silk screen can bubble the silk screen,also,on the MC2105 if you have any burned out bulbs in the meters or panel illumination they are a snap to replace,no soldiering needed,the bulbs are like mini car blinker bulbs & pop right in & twist to lock,these can also be ordered from Mcintosh or you can take out a bulb & go to a good electrical supply or lighting store & score them cheaply.

Anyhow more about your gear,more than likely the preamp that came with the system will be a C-26 or a C-28, both are nice sounding units,if its the C-26 check out the center channel feature it has on the top of the case,its a blended stereo signal of L&R & it sounds excellent,ive based my whole modern 5 channel stereo rig around the same principal of the C-26.

The matching tuners for that set up should be either the MR-74 or MR-75,both are excellent analog tuners,if your SUPER LUCKY the tuner will be a MR-78 which is the undisputed king of all analog tuners & still worth $1,000:D

The SCOPE you speak of will either be a MI-2, MI-3 or MI-4,they are called(Maximum Performance Indicators) & they have alot of functions & you will need a manual for it,both the MI-2 & MI-3 are tube units & the MI-4 is a solid state unit,the osciliscopes in these units are ran from a tube that is expensive & hard to find so its best not to leave the unit turned on when not in use.

A great resource for information on vintage Mcintosh gear is Roger Russell,he was the head of accoustic research at Mcintosh & helps people with first hand info if you email him.

Here is his web site.

http://www.roger-russell.com/aboutmc.htm

BTW,if the gear still has the factory boxes & packing be very carefull with handeling/storing it,most of the origional packing materials for those vintage peices have gone the way of the wind & are extremely rare & quite valueable.
 
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Seth=L

Seth=L

Audioholic Overlord
A larger amp with more tolerance for low impedance sounds better at high volumes with no audible distortion, NO WAY!!!:eek: Of course it will sound better at higher volumes. If you notice brightness as you turn the volume up on the Denon it is likely soft clipping, adding some distortion which includes trouble outputing bass and high frequencies. A larger amplifier will sound strong in the bass and smooth on the treble where the Denon did not because it is not clipping. No one ever said a seperate amplifier is not better than the receiver's amplifier, just that there wasn't much if any difference between the sound output amongst well designed amplifiers operating without clipping/audible distortion.
 
M

markw

Audioholic Overlord
I write this fighting tremendous pangs of jealousy.

but, seriously, great score, even if it's a loan. You're gonna get spoiled.

Those amps can spit out gobs of clean power, much more than your Denon (or mine) can muster so that Seth says does hold some water.

I'm just glad your subject wasn't "something borrowed, someting blew" :rolleyes:

enjoy... I would.
 
Seth=L

Seth=L

Audioholic Overlord
For the record, I wish I had a monster McIntosh amplifier.:D
 
Davemcc

Davemcc

Audioholic Spartan
Thanks for your comments guys. Highfi, the unit is in very good shape. The lights and meters work perfectly and the lettering and chrome are perfect. The only real imperfection is that the black on the glass front looks like its chipped right where the steel case meets the back of the glass. It's very small, though. I'll update you with the models of tuner, preamp and indicator and probably hit you up for advice on how to use the indicator.

I think the boxes, etc. are long gone, but all the manuals, reciepts and service slips are in safe storage. All the stuff was bought and serviced at a place in Detroit (can't remember, starts with a P, Piekar, Pieko, something like that) and last serviced there in the mid '90's.

The issue with the one switch was that the speaker on/off switch wasn't working correctly, but a few cycles of the switch on and off seems to have cured the problem. All is well.
 
highfihoney

highfihoney

Audioholic Samurai
Thanks for your comments guys. Highfi, the unit is in very good shape. The lights and meters work perfectly and the lettering and chrome are perfect. The only real imperfection is that the black on the glass front looks like its chipped right where the steel case meets the back of the glass. It's very small, though. I'll update you with the models of tuner, preamp and indicator and probably hit you up for advice on how to use the indicator.

I think the boxes, etc. are long gone, but all the manuals, reciepts and service slips are in safe storage. All the stuff was bought and serviced at a place in Detroit (can't remember, starts with a P, Piekar, Pieko, something like that) and last serviced there in the mid '90's.
Im pretty sure the dealer your thinking of is "Peckars",they have scaled way back on their 2 channel gear & went mostly HT.

As far as the imperfection in the glass face its called "bubbling",once you get everything all set up if you wish i can talk you through the process of repairing the bubbling behind the glass, if you wish to repair it.
 
Davemcc

Davemcc

Audioholic Spartan
That certainly sounds like the dealer name. I'm a little hesitant to try any cosmetic fix just because it isn't mine and that "something borrowed, something blew" keeps running through my mind. Thanks Mark, now I'm paranoid.
 
M

markw

Audioholic Overlord
Hey, dude, it's a mac.

that "something borrowed, something blew" keeps running through my mind. Thanks Mark, now I'm paranoid.
They're dang near bulletproof. If thay ain't dead by now, by using good, common sense (which I'm sure you have), your grand-kids will still be enjoying it.
 
Davemcc

Davemcc

Audioholic Spartan
They're dang near bulletproof. If thay ain't dead by now, by using good, common sense (which I'm sure you have), your grand-kids will still be enjoying it.
Funny you should say that because the original purchaser 37 years ago was my step-grandfather, my step-father's father. I'm sure the intention is that ultimately, this will pass down through his side of the family rather than my mom's. At some point, I could see this being passed to the great-great grandchildren of the original purchaser. When viewed this way, McIntosh equipment seems like a great investment, regardless of purchase price.
 
highfihoney

highfihoney

Audioholic Samurai
Funny you should say that because the original purchaser 37 years ago was my step-grandfather, my step-father's father. I'm sure the intention is that ultimately, this will pass down through his side of the family rather than my mom's. At some point, I could see this being passed to the great-great grandchildren of the original purchaser. When viewed this way, McIntosh equipment seems like a great investment, regardless of purchase price.
Alot of what you just said is my reasoning for my collecting of vintage Mcintosh,the stuff never quits working,fancy features & all that jazz aside its going to be something for my children & my childrens children to remember me by long after im taking a dirt nap.

Hopefully they think enough of me not to dump the collection on ebay after i kick off:eek:
 
pikers

pikers

Audioholic
A larger amp with more tolerance for low impedance sounds better at high volumes with no audible distortion, NO WAY!!!:eek: Of course it will sound better at higher volumes. If you notice brightness as you turn the volume up on the Denon it is likely soft clipping, adding some distortion which includes trouble outputing bass and high frequencies. A larger amplifier will sound strong in the bass and smooth on the treble where the Denon did not because it is not clipping. No one ever said a seperate amplifier is not better than the receiver's amplifier, just that there wasn't much if any difference between the sound output amongst well designed amplifiers operating without clipping/audible distortion.
I knew you were going to jump in with yet another seems-to-be-experienced post :rolleyes:

Take a Mac amp and a Levinson, and play them together. Both made impeccably, and both tuned objectively and subjectively. Same speakers will sound different.

I know it's hard for people that the width and breadth of their experience is found in a textbook, but some very simple listening will reveal there are sonic differences from one amp to another of equal quality. No question to those that know what they're talking about.

That said, Mac amps are wonderfully warm and robust-sounding amplifiers that maintain their value unlike any other. You are very fortunate to score that piece.
 
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