Hi, I am restoring an EAR802 preamp that has been butchered to death by an "expert" modder. Different hard wired selector switch, "audiophile" leaky caps, lifted or cut circuit tracks, cheap "gold" cynch sockets, lots of hot melt glue, you get it...
I have tried to restore everything to original, the amp is basically working now.
My question: Every picture of the original amp shows a 4 deck volume pot. In my one there was a cheap 2 deck one.
PCB tracks of volume/balance control circuit were cut and lifted, so it was impossible to figure out the original circuit.
Can someone tell me:
Which sort of pot was used originally - 2 or 4 deck, which resistance, how was it connected?
I found a comment that originally both signal value and gain were controlled by the pot, this would be a reason for using 4 decks.
Can someone share a schematic of this preamp? - I found nothing complete on the net.
Thanks,
Volker
I have tried to restore everything to original, the amp is basically working now.
My question: Every picture of the original amp shows a 4 deck volume pot. In my one there was a cheap 2 deck one.
PCB tracks of volume/balance control circuit were cut and lifted, so it was impossible to figure out the original circuit.
Can someone tell me:
Which sort of pot was used originally - 2 or 4 deck, which resistance, how was it connected?
I found a comment that originally both signal value and gain were controlled by the pot, this would be a reason for using 4 decks.
Can someone share a schematic of this preamp? - I found nothing complete on the net.
Thanks,
Volker