Quad 909 and Dada speaker Delay

  • No one logged in.

02-Nov-2017 10:12 PM

chris

chris

Posts: 3

My 909 plops when i turn the power off. so i bought the dad speaker delay's. The 909 powersupply delivers 77volts AC and 104volts DC (from powersupply to the amp board).

Can i only use the AC power for the boards, or do i need also the DC connection? If so, what to do with the high DC voltage, because the Delay works with 35-70volts DC.

i would like some advice.

  Reply

02-Nov-2017 10:43 PM

Joost Plugge

Joost Plugge

Posts: 938

You need the DC connection for the power of the delay/protection board, and the AC for the fast switch of functionality. The 606/909 range create its own ground voltage, so the delay unit must be powered from the positive supply, the red wire and the ground wire, the orange wire from the 909 psu board. Don't use the negative suply voltage, the black wire, or the output wire, the yellow one. Check the voltages first with a DVM.

Joost Plugge

DaDa Engineering


  Reply