Supratek Owners Thread


Greetings All - 
It appears that the 26-million-plus view, multi-decade "Preamp Deal of the Century" Supratek thread has been removed. I'm not sure why, but suppose there must be a reasonable explanation.
In any case, on that thread I recently asked whether there might be interest in a "Supratek owners thread" and received some interest. 
The purpose of this thread is for Supratek owners to share the details of their system, ask questions, share information about any tube-rolling they have done, and so forth.
I'll kick us off here with a few details about my system -
ancient Linn LP12 with Ittok arm, Dynavector 17D3 cartridge into Cortese LCR phono stage
Power amp is a fully serviced Innersound Electrostatic amplifier
Quad ESL63 speakers (not USA monitors) or JBL 4430 studio monitors
Digital sources are immature and evolving - ancient Fostex CR300 cd player/burner
DacMagic 100 DAC
Nordost Blue Heaven 75ohm interconnect
Due to the fairly long lengths of speaker wire required in the new listening room, speaker wire is Belden 12 gauge wire designed for low-voltage outdoor lighting systems. 
Next steps - dedicated circuit, new power cords, new interconnects, new wires.
128x128markusthenaimnut

@reimarc ,  I would guess 1 of 4 things.

1. the remote does not work

2. the 'photocell' cable is not connected to the VC board

3. the VC motor is not getting power

4. The Vol. knob shifted in transit and is rubbing/binding against the side of the wood chassis.

These are all pretty easy to check,..  with the pre 'on', place your ear up close to the unit and use the remote,  can you hear the motor trying to turn,..  very easy to hear,  if you do the knob is bound, an allen key, wrench and some patience can fix this pretty easily.  If you hear no motor noise when using the remote, then you'll need to open the unit and dbl check the photo cell ribbon cable and that it is connected.  if it is,  then dbl check the 2 wires that run to the VC board.  They most likely connect to a molex screwdown type of header/connector..  The VC is generally powered from a branch off of the idht heater circuit, taken from before the regulator IC..  you can somewhat safely check it is getting power by REMOVING the Rectifier (center tube in PS),  powering up and testing the VC board for voltage ~9vdc at those screw terminals..   Hope this helps!  DM me if you have any further questions.  Happy to help

@jslateiv Do you know what could be causing audible noise coming through the left speaker when adjusting volume?  The noise stops as soon as I stop turning the volume knob —which I usually adjust via remote.  Thanks!

@nymarty  first guess would be a pot getting dirty/bad rub on the wiper for whatever reason.  For these pots, only solution is replacement as they are sealed.