Owner`s manual

PAGE 33
TO MAINTAIN WARRANTY, USE MESA/BOOGIE TUBES WHEN REPLACEMENT IS NECESSARY
FOR CUSTOMER SUPPORT, PLEASE CALL 707-778-6565 MONDAY-THURSDAY 9-5 PST, OR EMAIL US AT [e-mail]
BEFORE CHANGING TUBES FLIP POWER & STANDBY SWITCH TO OFF
INPUT JACK
12AX7
V3
12AX7
V2
12AX7
V1
KT-88
V4
KT-88
V5
KT-88
V6
KT-88
V7
KT-88
V8
KT-88
V9
KT-88
V10
KT-88
V11
FRONT OF CHASSIS
OPERATE
SET BIAS
TUBE REPLACEMENT
Bass Strategy Eight:88
V1A- 2nd Gain Stage V1B- 1st Gain Stage V2A&B- Driver/Phase Inverter V3A&B- Driver 2nd Stages
PREAMP TUBES
LOW = V4, V8 HALF = V4,V5, V8, V9 FULL = V4 - V11
POWER TUBES