w w w . A c o u s t i c A m p l i f i c a t i o n . c o m
U U
FRONT PANEL
1.
INPUTS
– combination
¼
” (2 conductor instrument cable) or XLR (3-4 conductor microphone)
2.
VOLUME CONTROLS
- these adjust the overall loudness of the corresponding input. If your acoustic instrument has a preamp, you
should set the Volume control on your instrument at about half volume. You can then adjust the amplifier volume to your normal
playing level and still have room to increase or decrease your volume as needed from the instrument.
3.
EQUALIZATION
A. LOW FREQUENCY
- set to boost (15 dB) or cut (-15 dB) frequencies at 100Hz. Controls the lowest fundamental frequencies to enhance
the warmth and deep, full tones of your acoustic instrument or vocals.
B. MIDRANGE FREQUENCY
- set to boost (15 dB) or cut (-15 dB) frequencies at 800Hz. Allows you to control the definition and voice of
your acoustic instrument or vocals.
c. HIGH FREQUENCY
- set to boost (15 dB) or cut (-15 dB) frequencies at 7kHz. Increasing this will enhance the clarity and brightness of
your acoustic instrument or vocals.
4.
FEEDBACK ELIMINATION
a. FEEDBACK ELIMINATION LEVEL
– this adjusts the amount of feedback filtering. Be sure to set this control to “off” if you are not
experiencing any feedback issues.
b. FEEDBACK ELIMINATION FREQUENCY
– this adjusts the frequency of the feedback filtering.
To control Feedback, do the following:
1. Set the Level control to “12 o’clock” setting or higher
2. Turn the Frequency knob, moving from left-to-right, to search for the frequency at which the feedback is to be suppressed.
A. If in the lower register, start at “0” position
B. Sweep to the right if the frequency is in the higher register
C. When the feedback is eliminated, reduce the Level control until the feedback returns, then adjust slightly
upward until it is gone
JOB#: 10021
JOB DESCRIPTION: Acoustic A20 Amp Front Panel Silkscreen
SIZE BUILT: 100%
DATE BUILT: 02/17/14
COLORS USED: 2
PROPRIETARY
CREATIVE SERVICES
(RAL 1015)
CHASSIS COLOR
PMS 4975C
PANEL SILKSCREEN
VOLUME 1
LOW
EQUALIZATION
MID
HIGH
LEVEL
FREQUENCY
CHORUS
CHORUS
ON/OFF
OFF
REVERB
ON/OFF
REVERB
VOLUME 2
AUX IN
POWER
INPUT 1
INPUT 2
FEEDBACK
ELIMINATION
3
2
1
4
5
6
7
8
9
