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Upgrading an oldie stereo amp?

post #1 of 20
Thread Starter 
Wulhullo. I was looking lovingly at me 1978 Realistic SA-2001 Stereo Amplifier and I thought "well heck, its about 30 years old i'm sure some modern technology could make it sound a bit better or be a little more powerful"

I'm not talking about a complete overhaul but replaceing resistors, caps, transistors etc. Is this just dumb or is it plausable? Would newer higher quality components help it out a little?


Model # 31-1962A
340W 8 channels 16 inputs main in, pre out pretty much all RCA based.

Thanks.
    
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post #2 of 20
The quality is most likely a result of the design rather than the quality of the basic components. Even if - it's a huge ***** to replace stuff like that in commercial, production hardware
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post #3 of 20
Thread Starter 
Quote:
Originally Posted by rabidgnome229 View Post
The quality is most likely a result of the design rather than the quality of the basic components. Even if - it's a huge ***** to replace stuff like that in commercial, production hardware
Gah, I cant find a schmatic or manual in pdf anywhere.

Well, i'm looking at it right now and all of the wires are easily removeable.
Just wires wrapped around metal pegs.
    
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post #4 of 20
Would it be bad in any way if you break it?
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post #5 of 20
Thread Starter 
Quote:
Originally Posted by rabidgnome229 View Post
Would it be bad in any way if you break it?
YEAH!!!!!! I mean, its vintage. Easy on the eyes, Powerful, high quality. And I dont just have an amp lying around to replace it = no speakers = me sad. It has a bunch of pots on the PCB i wonder what they do...
    
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post #6 of 20
CAREFULL!! LOL
I am into stereo equipment, and i had an older amp that had news caps, and other misc components (dont know what they are) and the sound was noticibly better!
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post #7 of 20
Thread Starter 
Quote:
Originally Posted by jbua5150 View Post
CAREFULL!! LOL
I am into stereo equipment, and i had an older amp that had news caps, and other misc components (dont know what they are) and the sound was noticibly better!
I'm not dumb. I wont touch anything inside of it unless i have it unplugged for like a week. It has 2 caps sized like the kind found in crt monitors.
If I did want to upgrade it i'd send it to soloz2
    
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post #8 of 20
I would only replace what has been burnt out, just check all resistors. I had a few burn out on my old fisher amp
     
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post #9 of 20
Thread Starter 
Quote:
Originally Posted by frostbite View Post
I would only replace what has been burnt out, just check all resistors. I had a few burn out on my old fisher amp
How would I go about checking that? The only thing I know burnt out is one of the lamps on the right VU meter.
    
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post #10 of 20
DONT TOUCH THEM POTS!! LOL,
they will be for BIASing the transistors,
replacing the capacitors would be a GOOD start!, as they get older the electrolite stuff inside em drys and on a ye olde amplifier, the first ones to replace would be the resovior capacitors in the PSU (Thats them bigg fuggers) on the side they have the voltage, polarity and capacitance
write down the V and uF values and look em up in your supplier.
you can up the uF value to provide more current to the amplifier, make sure you have the correct voltage and put them in the SAME polarity as they were, they WILL cause alot of damage if you get em wrong!
EDIT:
A digital multi meter will do the trick measureing them resistors!
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