Bias adjust system, Front panel features, On standby – Peavey 6505TM User Manual
Page 9: Preamp
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7/8. EFFECTS SEND/EFFECTS RETURN
Signals are supplied to outboard effects or signal processing units by patching from the Effects Send (7)
output into the outboard unit(s) and back into the Effects Return (8) input using shielded cables with 1/4"
mono phone plugs. Only non-gain effects devices (chorus, reverb, delay, etc.) should be used in the effects
loop. If footswitch is used, “Effects” must be selected (LED illuminated) for effects to work.
9. PREAMP OUT
This output can be used to send a preamp signal from the 6505™+ to a mixing console, tape recorder, etc.,
using a shielded instrument cable. Patching from the PREAMP OUT does not affect the normal operation of
the amplifier.
BIAS ADJUST SYSTEM
10. BIAS TEST TERMINALS
These terminals, along with the adjustment knob behind the grille are provided to measure and adjust the
power amp tubes’ bias. The bias adjustment should only be done by a qualified technician.
FRONT PANEL FEATURES
ON STANDBY
11. POWER SWITCH/LED
This switch supplies power to the unit. Depressed to the “ON” position, the red Power LED indicator will
illuminate above the Power Switch when power is being supplied to the unit.
12. STANDBY SWITCH/LED
This switch allows the 6505+ to be placed in a non-operational standby mode. When the Standby Switch
is activated, the tubes remain hot and ready for instantaneous operation, eliminating warm-up time. The
Standby LED indicator above the switch will illuminate when the amp is in the operational mode.
PREAMP
13. INPUT
The 6505+ input jack is designed to accommodate a variety of guitar output levels, regardless of pickup
configuration. Due to the extreme high gain capabilities of the 6505+, it is imperative that you use a
premium shielded instrument cable in order to minimize noise.
14. CHANNEL SELECT SWITCH
This switch allows selection of the Rhythm or Lead Channel. Depressing the switch to the “in” position
activates the Lead Channel. The red LED next to the Lead Pre control will illuminate to indicate that the Lead
Channel is active. In the “out” position, the Rhythm channel is activated and the green LED illuminates next
to the Rhythm Pre control to indicate that the Rhythm Channel is active. Channels may be selected using the
remote footswitch. If remote selection is desired, the Channel Select Switch must be set to the “in” position
(Lead Channel). See page 11.
15. CHANNEL SELECT LED
Both the Rhythm Channel and Lead Channel have these LEDs to indicate which channel is active. The two
Channel Select LEDs are never on at the same time. The channel with its indicator illuminated is the active
channel.
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