Vox AC15C1 Service Manual

VOX AC15C1
1
st
stage Tube Oscillation Test knobs setting:
Knob Posittions
MASTER TREMOLO REVERB TOP BOOST NORMAL
VOLUME TONE CUT DEPTH SPEED LEVEL BASS TREBLE VOLUME VOLUME
Max Mi n Min Min Min Mi n 3
O’clock
Max Max
x Input: Not connected.
x Confirm there is no oscillation, with this setting.
x When th ere is an oscillation, replace 1st stage tube with 2nd or 3rd stage tubes. If it
doesn't solve, try another 12AX7 tubes.
Reverb Oscillation Test knobs setting:
Knob Posittions
MASTER TREMOLO REVERB TOP BOOST NORMAL
VOLUME TONE CUT DEPTH SPEED LEVEL BASS TREBLE VOLUME VOLUME
Max Mi n Min Min Max Mi n Min Min Min
x Input: Not connected.
x Confirm there is no oscillation, with this setting.

Vox AC15C1 Specifications

General

Number of Channels	2
Total Power	15W
Speaker	1 x 12" Celestion G12M Greenback
Preamp Tubes	3 x 12AX7
Power Tubes	2 x EL84
Reverb	Yes
Tremolo	Yes
EQ	Bass, Treble
Inputs	2 x 1/4" (Normal, Top Boost)
Outputs	1 x 1/4" (External Speaker)
Depth	10.43"
Type	Tube
Footswitch I/O	1 x 1/4" (Reverb, Tremolo)
Weight	48.5 lbs