Peavey 400 - Manual (Page 8)

8
Flowchart
This flowchart illustrates signal flow within the unit. In order to thoroughly understand
the unit's functions, please study this diagram carefully
.
Input
-10 dB Pad
Pre Gain Low Boost High Boost
T
ube Stage
1/2 12AX7
Post Gain
Ef
fects
Loop Send
Ef
fects
Loop Return
Switch Logic
Preamp Out
Power Amp In
Power
Amplifier
(8) 6550s (2) 12AX7s (1) 12AT7 400 watts RMS Resonance and Presence
DDT
Circuit
Defeat Switch
Impedance Selector Switch
Parallel Speaker Jacks 4 or 8 ohms
Crunch Channel Clean Channel
T
ube Stage
1/2 12AX7
T
ube Stage
1/2 12AX7
T
ube Stage
1/2 12AX7
Mid Shift
T
ube Stage
1/2 12AX7
Pre Gain
T
ube Stage
1/2 12AX7
3-Band Passive EQ LOW
- MID - HIGH
3-Band Passive EQ LOW
- MID - HIGH
Low Boost High Boost Low Cut