User Guide
1
SS-201 “SOFT START” INSTALLATION INSTRUCTIONS
PARTS SUPPLIED WITH THIS KIT:
(1) SS-201 “Soft Start” Circuit Board Assembly
To start the installation, read these instructions very carefully. Unplug the amplifier and
remove any input, output and control cables that may be connected to the back of the amplifier.
Remove the chassis from the case and remove the perforated sheet metal RF shield from the top
of the chassis. Remove the tubes and put them in a safe place. You are now ready to proceed
with the installation.
( ) Place the chassis upside down with the front panel facing you.
( ) Locate a point 6¾” from the rear of the chassis and 2” from the power supply circuit board
cutout. Mark this spot on the chassis with a pencil or other marking tool. This is where the
center of the “Soft Start” module will be mounted.
( ) Cut the wire bundle lacing from the middle of the power supply circuit board toward the rear
of the chassis about 1” past the power supply circuit board cutout.
( ) Locate the large RED wire that goes to terminal 2 of the terminal strip next to the wire
bundle near the rear of the chassis. Refer to the supplied pictorial. Pull this wire loose
from the other wires and cut it at a point 6¾” from the rear of the chassis. Strip ¼” of
insulation from both ends of the wire. Tinning each end of the wire may help when
soldering these wires to the “Soft Start” module.
( ) Pass each end of the cut wire through the circuit board from the component side and solder
to pads “A” and “C”. Make sure the “LOAD” side of the wire goes to “A” and the
“SWITCH” side of the wire goes to “C”.
( ) Locate the large BLACK wire that goes to terminal 4 of the terminal strip next to the wire
bundle near the rear of the chassis. Refer to the supplied pictorial. Pull this wire loose
from the other wires and cut it at a point 6¾” from the rear of the chassis. Strip ¼” of
insulation from both ends of the wire. Tinning each end of the wire may help when
soldering these wires to the “Soft Start” module.
( ) Pass each end of the cut wire through the circuit board from the component side and solder
to pads “B” and “D”. Make sure the “LOAD” side of the wire goes to “B” and the
“SWITCH” side of the wire goes to “D”.
( ) Pass the small RED wire from the circuit board under the wire bundle and under the voltage
select terminal strip. Solder it to lug 2 of the voltage select strip as shown in the supplied
pictorial.
( ) Examine the tops of the relay cases on the “Soft Start” module. If there are vent holes in
the tops, be careful not to cover these holes in the next step.
( ) Place a small dab of RTV or other silicone adhesive on the inner top of each relay on the
circuit board.