Ampeg PF-350 Owner's Manual

5
PF-350 / PF-500 / PF-800 Bass Guitar Amplifier
PF-350 Front Panel - Continued
654321
input
pad
-15dB
bassgain midrange treble volume
limiter
audio
in
phones
PF 350
peak
limit
0 100 100 100 100 10
fault
13121110987
7. TREBLE: Use this to adjust the high
frequency level of the amplier. This
provides up to 19 dB of boost, or –25
dB of cut, at 8 kHz. The high frequency
output is attest at the center position.
8. VOLUME: Use this to control the overall
output level. It aects the Speaker
Outputs and preamp level to the
Headphone Output. Use it wisely and
turn it down when making connections,
putting on headphones, or trying
something new�
9. LIMIT LED: This LED illuminates
when the Limiter circuit is activated,
indicating that the amplier is nearing
full output, and the limiter is keeping
peak signals from clipping the output.
10. LIMITER SWITCH: Press this switch in
to add the limiter circuit. If the signals
driving the amplier start to peak, the
limiter will automatically reduce the
signals to prevent clipping, and the
Limit LED [9] will ash. The Limiter will
help keep the amplier’s output “clean”
up to high output levels and avoid
potentially damaging distortion�
11. FAULT LED: This LED illuminates amber
if the amp thermals and shuts down or
develops other fault conditions. See
“Fault/Thermal Considerations” on
page 16 for more information�
12. 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 is not aected by the Volume
control.)
13. 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 amplier, and any
incoming audio from the Audio In jack
[12].
If you just want to listen and practice
through headphones, disconnect the
speaker outputs [18] from the speaker
cabinet. There is no harm in playing
the PF-350 without speakers.
Before putting on headphones,
make sure the Volume control [8]
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.

Ampeg PF-350 Specifications

General

Brand	Ampeg
Model	PF-350
Category	Amplifier
Language	English