Operational Notes; Bias Adjustment; Tube Replacement - 3rd Power WOOLY COATS EXTRA SPANKY User Manual

Operational Notes:

TUBE CHART
#8
V1
V2
V6
V5 V4
reverb
phase preamp
.5"
output
tube output
inverter
rectifier
#8
Tube Layout and Requirements:
V1: JJ 12AX7 (Preamp)
V2 & V3: Sovtek 12AX7LPS (Reverb, Phase Inverter)
V4 and V5: 6L6 Output tubes
V6: 5AR4 Rectifier tube

Bias Adjustment

Your Wooly Coats Extra Spanky Amp comes from the factory biased for Tungsol 6L6 tubes. Bias ad-
justments are not intended to be user-serviceable. Attempting to adjust the bias yourself will expose
you to very dangerous high-voltage electricity that can kill you. Special test equipment and knowl-
edge of amp circuits and tubes are required to perform this function. DO NOT ATTEMPT TO DO THIS
YOURSELF.

Tube Replacement

WE RECOMMEND TAKING YOUR AMPLIFIER TO A QUALIFIED TECHNICIAN FOR SERVICING YOUR
TUBES. Make certain the amplifier is turned off and has been allowed ample time to cool down. Be
very careful when you remove the tubes as they might still be very hot! Do not touch tube sockets
with fingers! Even after turning your amp off and unplugging it from the power outlet there could be
enough voltage stored in the capacitors to give you a lethal electrical shock.
WARNING:
• Do not remove the back panel.
• Do not attempt to check or replace tubes yourself. Refer to an authorized service center.
• Never touch the tubes while the amplifier is turned on or has recently been turned ON. You can
severely burn your fingers and hands.
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