7.
Disconnect the grey
ribbon cables that run
from the
input/preamp board
to the power amplifier
boards.
8.
Locate the position where you will be tacking the new resistors onto the
back of the input/preamp PCB as depicted in the image below:
9.
Tack a 20.0 k
Ω
1% 1/4W resistor onto each of the two positions depicted
above. (Yorkville Sound can supply you with 2x YS#6123 for this job if
you require).
10.
Re-assemble the PSA1s and test that it is working. (NOTE: either speaker
wire [see image 4] can connect to either amplifier board when re-
assembling).
Congratulations! Your PSA1s limiter will now better protect the woofers and
amplifiers in the event of excessive input signals being driven into it.
