Vintage Asylum

RE: Tell me about my new (to me) Pioneer SX-5570

99.185.54.154

JURB

A

In Reply to: RE: Tell me about my new (to me) Pioneer SX-5570 posted by george_hanson on December 28, 2020 at 22:46:04

Pop the lid off and take some pictures. I will take pictures of my 850 and we an compare. I bet we find they are the same.

One thing though, the 850 is so overbuilt that with a bigger power transformer it could put out alot more power. It is rated 65/ch but I think with a few minor change it could easily put out twice that. It has four outputs per channel and more heat sink than some 200/ch amps.

Follow Ups:

RE: Tell me about my new (to me) Pioneer SX-5570 - george_hanson 19:53:04 01/01/21 (1)
Waiting on some deoxit and when it arrives I will do so.

My understanding is the SX-5570 is equivalent to the SX-950...
- RE: Tell me about my new (to me) Pioneer SX-5570 - JURB 07:41:34 01/02/21 (0)
  No pictures necessary, it is a 950. I looked it up and noticed it has three sets of speaker outs the 850 only has two.
  
  Tell you this much, even pictures of the inside would not be conclusive because the 850 is so similar. I bet all but about a dozen parts are interchangeable.
  
  So, enjoy the extra (extra ???) 20 watts per channel. Note that I consider these to be among the best receivers Pioneer ever made, and can only be topped by esoteric stuff. Like the MAC 1900, though I think we got more power. Alright there are a few Kenwoods out there... In those actually the 9400 is better than the 9600 because the 9400 doesn't use output ICs. I made some money retrofitting and adapting these things to take an available IC but I am sick of it. The job may work well but it looks like shit.
  
  But you definitely got a rara avis there. I would never sell it for one. Actually I can't really think of anything I would be willing to trade it for. Maybe a really nice gun, but I mean a really nice one.
  
  However when you write your will I can mail you my name and location.
  
  If you ever want to send it to me for service or something, send it naked. Take off the front plate and all the knobs, and the top and bottom covers. I would rather not be responsible for them. In fact that is how my clients usually bring things now anyway. I prefer it
  
  One thing, that thing might be full of 2SC726s. And if needed I have the right kind of FETs for the preamp section. (if I am thinking the right unit here...)
  
  Yes, I have actual JFETs in both polarities.
  
  Anyway, have fun with your bad ass to the bone machine there and don't bring the cops too much.

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