PF-350 / PF-500 Bass Guitar Amplifier

PF-500 Rear Panel continued

PF 500

power

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25.GROUND / LIFT: Press this switch in to engage the Ground Lift, if necessary, to help eliminate hum at the XLR jack.

26.0 dB (line level) / -40 dB (mic level): Press this switch in to apply a –40 dB cut to the signal at the XLR Line Out

[24].

27.POST-EQ/PRE-EQ:The signal at the

XLR Line Out [24] can be set to either

Pre-EQ or Post-EQ with this switch. With the switch in the IN position, the signal at the XLR Line Out is Pre-EQ. This is a direct output not affected by any EQ or boost settings. With the switch in the OUT position, the signal is Post-EQ and is controlled and modified by the tone controls, and the effects loop.

28.FX SEND JACK: Use this 1/4" TS unbalanced output to send a line-level output to an external effects processor (for example). The output here is affected by all controls except the volume.

Use the FX return jack to feed the returned processed signals back into the power amplifier.

29.FX RETURN JACK: Use this 1/4" TS unbalanced input to return the processed line-level output of an external effects processor (for example). The processor could be fed by signals from the FX send [28].

 

 

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ft switch

pwr amp in

pre amp out

tuner out

 

 

 

patch

 

 

speaker outputs

XLR line post-EQ

 

fx loop

 

CLASS 2 WIRING

out

pre-EQ

 

 

 

 

 

 

0dB

 

return

 

 

 

 

-40dB

 

 

 

 

 

 

 

 

 

 

 

GND

 

 

 

 

 

 

LIFT

 

send

 

300 W @ 8Ω 500W @ 4Ω MIN LOAD

 

 

 

 

 

 

 

 

 

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30.TUNER OUT: This jack supplies the only live output when the mute switch is engaged. This allows for silent tuning through an electronic tuner or killing the house send with a monitor mixer send still active.

31.PREAMP OUT: This jack is a direct post master preamp output for use with an external power amp. Connect the external amp’s input to this jack using a shielded instrument cable.

32.POWER AMP IN: This jack connects directly to the internal power amp for use with an external preamp. When using an external source, connect the OUTPUT of the source to this jack using a shielded instrument cable to feed the signal into the power amp section. The internal signal is disconnected when a plug is inserted into this jack.

33.FOOTSWITCH: Connect a dual footswitch to this jack for remote Mute and FX On/Off control. On the stereo

1/4" plug, the tip controls Mute and the ring controls FX On/Off. The Mute function is available from either the front panel or the footswitch.

NOTE: A footswitch may be purchased at your local Ampeg Dealer or ordered directly from LOUD Technologies Inc. Be sure to ask for model #AFP2.

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