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I need advice.

Background: I am a devoted music listener for over 50 years.  Most of my knowledge of technology is from the 70's.  
Objective: The best sound quality I can get from my system.
I have numerous amps, turntables and speakers.  The best of these is as follows:
My audio system;  Thorens TD 160 with Stanton 680EEE cartridge, Sansui AU 717, JBL L112
The Sansui (as far as I can tell) is untouched as far as any refurb is concerned. The overall quality of the audio as far as I can tell is good.  But it is what I listen to every day so I have no source for comparison. I have read that an amp that is 30+ years old is due for refurbishment (new caps, etc.).  I have been quoted $350 - 400 for a total refurbishment of the Sansui 717.  I would consider having this work done if it would make a noticeable improvement in the audio quality.  What  can I expect from such an investment?  I welcome any suggestions.
garywest

Showing 1 response by shadorne

shadorne's avatar
shadorne
7,490 posts
 
In addition to electrolytic caps, Tweeter damping fluid or ferrofluid is the other thing that will go with time and use (dries out). Foam surrounds can wear out too. After more than 30 years your electrolytic caps are likely shot or at least out of tolerance - those in the signal path are most critical.

I'd be wary of simply assuming a $350 recap will get you back to original 70's performance. You should try to test your individual components separately A vs B against modern gear.  These age related failures should be fairly obvious - night and day differences. If you find your speakers need a refurb too then the cost/benefit may steer you towards a different solution.
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