This isn’t Al Capone’s vault… there’s not much of a mystery here. 1) the “missing” nuts on those two pots would have been on the outside of the plastic case to structurally tie in the outside case to the controls. You can see the holes in the plastic are different for those two. Whoever made the output mod probably lost the nuts. 2) a ceramic phono cartridge is basically normal line level, especially on Shack’s cheapest amplifier from that era. Only a magnetic cartridge needs a preamp. The manual suggests connecting a “record changer” to the phono input on the SA-10 and in fact only specifies one impedance for both inputs.
There were 2 of these amps... They used it as a two "single ended" high end amps, double the power, double the bliss! Back in the day I used to have one, it sounded nice, but not very loud. At the end one channel pigged out...
I have encountered this sort of thing with cheap plastic components before. Just use enough nuts and bolts to do the trick. That one nut stabilized the board on that side in the up and down and sideways plane and the knobs secured it from front to back. Save a nickel. Notice that the plastic is only cut out to allow for the nut on the center pot.
Damn, you triggered my ocd with constant banging around, slamming the device without caution. And that work bench is a disaster!
This isn’t Al Capone’s vault… there’s not much of a mystery here. 1) the “missing” nuts on those two pots would have been on the outside of the plastic case to structurally tie in the outside case to the controls. You can see the holes in the plastic are different for those two. Whoever made the output mod probably lost the nuts. 2) a ceramic phono cartridge is basically normal line level, especially on Shack’s cheapest amplifier from that era. Only a magnetic cartridge needs a preamp. The manual suggests connecting a “record changer” to the phono input on the SA-10 and in fact only specifies one impedance for both inputs.
Yes, the other visitor didn't put it back together properly. The front panel is supported just as you said.
The terminal on top of the volume controls is for loudness compensation in that it provides some bass boost at lower volumes.
There were 2 of these amps...
They used it as a two "single ended" high end amps, double the power, double the bliss!
Back in the day I used to have one, it sounded nice, but not very loud. At the end one channel pigged out...
I have encountered this sort of thing with cheap plastic components before. Just use enough nuts and bolts to do the trick. That one nut stabilized the board on that side in the up and down and sideways plane and the knobs secured it from front to back. Save a nickel. Notice that the plastic is only cut out to allow for the nut on the center pot.
the head mounted camera is making me sea sick. Get a tripod like a proper channel.
Like I give a fuck ass hat…
Nice reply, Qmods, calling a potential follower an ass hat.