10
PF-350 / PF-500 / PF-800 Bass Guitar Amplifier
PF-500 / PF-800 Front Panel
thresh
input
-15dB
ultra lo
mute ultra hi
gaincompression bass midrange frequency treble volumefx mix
peak
mute
31 2 4 5
audio
in
phones
PF 500
PF 800
0 100 100 100 100 100 10 0 10
fault
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1. INPUT: The signal output from an
instrument (active or passive) may be
connected to this 1/4" Input by means
of a shielded instrument cable.
2. PEAK/MUTE LED: This red warning
LED will come on if: the Mute switch
[4] is engaged, the input signal is too
high, the Gain control is set too high,
or there is too much boost from the
Bass, Midrange and Treble controls. If
it comes on regularly, even when these
controls are low, try engaging the –15
dB Pad [3].
3. –15 dB PAD: Press this switch in to
reduce the input signal by 15 dB and
compensate for higher output sources.
This attenuation is suited for use with
basses that have active electronics or
high-output pickups. Use this Pad if
you notice that the Peak/Mute LED [2]
comes on regularly. It will reduce the
chance of overdriving the preamplier
stage, and allow more usable range and
ne adjustment of the Gain control.
4. MUTE: Press this switch in to mute
the signal. The Peak/Mute LED [2] will
illuminate when this switch is engaged.
5. THRESH LED: This illuminates when the
signal level exceeds the compressor’s
threshold and gain reduction is active.
6. COMPRESSION: This controls the
amount of signal compression. At the
fully counter-clockwise position, there is
no compression; at the fully clockwise
position, the compression ratio is 10:1.
The sonic eect of compression is
reduced dynamics, increased sustain
and a more consistent output level,
regardless of how light or hard the
strings are played. The compressor
is very transparent—that is, there is
very little eect on the tone of your
instrument�
7. GAIN: This varies the amount of signal
driving the preamplier. If a small
clockwise rotation from minimum leads
to overloading, and the Peak LED is
illuminating, try engaging the –15 dB
Pad. This will provide more usable
range with the Gain control.
8. ULTRA LO: This switch, when engaged,
enhances the amount of low-end output
by 2 dB at 40 Hz, and implements a –10
dB cut at 500 Hz.
9. ULTRA HI: This switch, when engaged,
enhances the amount of high frequency
output by 9 dB at 8 kHz.
10. BASS: Use to adjust the low frequency
level of the amplier. This provides up
to 12 dB of boost, or –12 dB of cut, at
40 Hz. The low frequency output is at
at the center position.
11. MIDRANGE: Use this to adjust the
midrange frequency level of the
amplier. This provides up to 10 dB
of boost, or –20 dB of cut, at the
frequency selected. The midrange
frequency output is at at the center
position. Rotate the control counter
clockwise for a “contoured” sound
(more distant, less midrange output), or
clockwise for a sound that really cuts
through�
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