Discussion in 'DIY' started by birchoak, May 27, 2018.
birchoak I have a 3140 integrated amp (40W). 4020 tuner.
Oh, hands down ... the Sansui QRX-9001 ...
Very neat layout in that monster, but quite a few parts! Do you have one? That toroidal xformer must weigh more than a cinder block!
Oh, yeah ... and about the easy part ... just kidding! Here's what one looks like torn down for a simple control cleaning ...
And that toroidal certainly does eat up some serious real estate ...
I thought maybe there was a touch of humor--Looks like you fix these professionally; I like the blue sticker you add to the trafo. I'm about done with stuff that requires convolutions such as you have illustrated.
sorry had to do this ...
Ok, that looks pretty simple! Chip amp?
A new one to add: Scott R74S. Just about all the boards slide off these little square posts--no connecting wires holding them in place! Neat wiring, plenty of space.
one transistor .. it can be done with just a transistor and speaker if you have a suitable transistor .saying that i think the capacitor is needed really .
I like the 1970s Sansui receivers, like the 890DB, 9090DB, etc. Takes no time at all to pop the hood and start troubleshooting.
Opposite end of the spectrum would be SAE amplifiers, man what a pain to get into!
My early Sherwood SS integrated is pretty simple. Take the lid off and everything is right there, and there isn't much "everything". Each circuit is on it's own board too, phono, line stage, and power amp for each channel. Not much to the power supply, its a handful of parts on a terminal strip plus a cap strapped to the bottom. Early SS circuit design, just barely enough parts to make the thing actually function.
Realistic STA-77A. I especially like how the output transistors are mounted, especially since one of the left side ones was open. Soooo much room to work on.
Separate names with a comma.