Changing the Tubes:
Tube wear is in direct proportion to how often and how hard you play. Preamp tubes aren�t worked as hard as power tubes and typically last longer. When a preamp tube wears out, the preamp may squeal, get noisy, lose gain and sensitivity, or just quit working. A service center can determine which tube(s) may need replacing. To get to the tubes in the SVPCL, the top must be removed. This should be left to a qualified service person.
System Block Diagram:
TRANSFORMER BALANCED LINE OUTPUT PRE TUNER OUTPUT POST MUTE GND LIFT
PEAK
PAD INPUT
GAIN PREAMP OUTPUT MASTER ULTRA HIGH BASS TREBLE MID MID FREQ. BUFFER PREAMP OUTPUT
