Pin 5 of the cylon meters connect to the bus bar.
Is it best to have one connection each to the bus or can I use one wire and daisy chain between the boards?
(I have a permutation option for this bus bar in mind...)
I wanted to verify this before proceeding for the video, my goal is to provide the best possible information for the “unofficial” White Oak video rebuild guide for beginners.
Hi Mark
Wiring instructions pertain to the White Oak Audio Cylon light boards below (taken from the installation instructions).
Pin1= Analog ground. Run a new 22AWG Black wire from Pin1 of the RIGHT meter board to Pin1 of the LEFT meter board.
Pin2 = Existing 12VAC YELLOW wire from the transformer Secondary 2 is AC1 Input and goes ONLY to the RIGHT meter board. Cut and re-strip the existing wire to get a clean length to attach to the new meter board. DO NOT USE AC FROM SECONDARY 1 WHICH IS A MUCH HIGHER AC VOLTAGE (75VAC) WHICH WILL DAMAGE THESE METER BOARDS.
Pin3 = Existing 12VAC ORANGE wire from the transformer Secondary 2 is AC2 and goes ONLY to the RIGHT meter board. Cut and re-strip the existing wire to get a clean length to attach to the new meter board. DO NOT USE AC FROM SECONDARY 1 WHICH IS A MUCH HIGHER AC VOLTAGE (75VAC) WHICH WILL DAMAGE THESE METER BOARDS.
Pin4 = +15VDC. Run a new 22AWG Red wire from Pin4 of the RIGHT meter board to Pin4 of the LEFT meter board.
Pin5 = Analog ground. The Existing BLACK wire that originates from the amplifier chassis (tripled along with the red and white wire) goes to Pin5 of the RIGHT meter board ONLY. Cut and re-strip the existing wire to get a clean length to attach to the new meter board.
Pin6 (Right Channel Meter Board ONLY)= Meter Board Signal Input. The Existing RED wire that originates from the amplifier chassis (tripled along with the black and white wire) goes to Pin6 of the RIGHT meter board ONLY. Cut and re-strip the existing wire to get a clean length to attach to the new meter board.
Pin6 (Left Channel Meter Board ONLY)= Meter Board Signal Input. The Existing WHITE wire that originates from the amplifier chassis (tripled along with the black and red wire) goes to Pin6 of the LEFT meter board ONLY. Cut and re-strip the existing wire to get a clean length to attach to the new meter board.
Pin7 = NO CONNECTION for PL400S2. For PL700S2, connect the wire from the meter attenuator switch. Cut and re-strip the existing wire to get a clean length to attach to the new meter board. Remove 120K ohm resistor usually applied between the attenuator switch terminals. One switch pole goes to the right meter board and the other switch pole goes to the left meter board.
Pin8 = NO CONNECTION for PL400S2. For PL700S2, connect the wire from the meter attenuator switch. Cut and re-strip the existing wire to get a clean length to attach to the new meter board. Remove 120K ohm resistor usually applied between the attenuator switch terminals. One switch pole goes to the right meter board and the other switch pole goes to the left meter board.
Pin9 = B- Fused (either -80V for PL400 or -100V for PL700). Run 2 NEW purple wires from the shell (not the tip) of the NEGATIVE rail fuse holder B- to Pin9 of each of the left and right meter boards.