11
PF-350 / PF-500 / PF-800 Bass Guitar Amplifier
PF-500 / PF-800 Front Panel - Continued
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
13 14 15 1716 18121110987654321
12. FREQUENCY: This control allows you
to select the center frequency for the
Midrange control [11], giving you a
choice of ve center frequencies. The
numbers correspond to the following
center frequencies: 1=220 Hz, 2=450
Hz, 3=800 Hz, 4=1.6 kHz, 5=3 kHz.
13. TREBLE: Use to adjust the high
frequency level of the amplier. This
provides up to 15 dB of boost, or –20
dB of cut, at 4 kHz. The high frequency
output is at at the center position.
14. FX MIX: This control varies the mix
between the direct (dry) and the eects
(wet) signals when the Eects Loop is
used. Fully counter-clockwise results
in all direct signal (no eect) and fully
clockwise adds all eect (with no direct)
signal. The fully clockwise position is
equivalent to a series eects loop, and
should be used with such devices as
limiters and equalizers.
15. VOLUME: Use to control the overall
output level. It aects the preamp
level to the Speaker and Phones
Outputs� Use it wisely and turn down
when making connections, putting on
headphones, or trying something new.
16. FAULT LED: This LED illuminates amber
if the amp reaches its thermal limit
and shuts down, or develops other
fault conditions. See “Fault/Thermal
Considerations” on page 16 for more
information�
17. AUDIO IN: The audio output from line
level sources, such as a mobile device
or MP3 player, can connect to this 1/8"
TRS stereo input. The incoming audio
is mixed with the preamp signals, so
you can play along to a practice track
as you listen with headphones. (The
audio coming in here only plays in the
headphones and appears nowhere
else. It does not aect the signal fed to
the Audio Input.)
18. PHONES: Use this 1/8" TRS stereo
output to connect your headphones.
The output here is a mix of the line level
signals reaching the amplier and any
incoming audio from the Audio In jack
[17].
If you just want to listen and practice
through headphones, disconnect
the Speaker Outputs [23] from the
speaker cabinet. There is no harm in
playing the PF-500 / PF-800 without
speakers.
Before putting on headphones,
make sure the Volume control
[15] is turned down, and (if connected)
any external audio source has its level
turned down. This will reduce the
chance of hearing damage due to
loud volumes.
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