© 2006 Wohler Technologies Inc. ALL rights reserved
8
AMP-S8
User Manual P/N
821640
Rev-
B
4
5
6
7
8
9
1
2
3
Please refer to
Figure-2a
on the facing page to familiarize yourself with the front panel controls and indicators of the
AMP-S8
units. The following sections describe the functions of each of the various controls and indicators found on the front panel
and are referenced, by number, to
Figure-2a
.
Front Panel Features
Section 2:
Operation
Speakers
The
AMP2-S8
(
2U
) models feature two mid-range speakers (left and right) and
one
woofer speaker, while the
AMP1-S8
(
1U
) models feature two mid-range speakers (left and right) and
two
woofer speakers.
All models of the
AMP-S8
contain high performance transducers driven by three power amplifiers; two amplifier/
driver combinations handle midrange and high frequency information in the left and right (stereo) speaker channels, while the
third channel reproduces and sums the left and right channel information below the 500 Hz crossover point in the single
woofer (bass) speaker channel. Note that the woofer channel is NOT a dedicated
LFE
(subwoofer) or
Center
channel.
Headphone Jack
This jack accepts a standard
1/4”
phone type stereo plug. Select the headphone audio sources as you would for the internal
speakers. When you plug in headphones the speakers will mute.
CHANNEL MIX (1-8)
or
Preset Select Buttons (1-4)
These buttons are used to select the channels to be summed into either or both speaker channels
or
to create and recall
presets when used in conjunction with the
FN Button
.
See
Item 7a
on page
18
for a full description of the function of the
CHANNEL MIX Buttons
.
Bargraph Meter Brightness Controls (Left and Right)
The brightness of the bargraph meters is adjusted using these two recessed trimpot controls. The left control adjusts the
brightness of the
left
four LED bargraphs and the right control adjusts the brightness of the
right
four bargraphs. Use a small
flat blade screwdriver or similar tool to adjust these controls. Clock-wise rotation
increases
the brightness.
Volume Control
This controls the loudness of the audio reproduced by the internal speaker channels or connected headphone.
CHANNEL MIX LEDs (1-8)
The
AMP2-S8
(
2U
) model features dedicated LEDs above each bargraph, while the
AMP1-S8
(
1U
) model uses the top
LED segment of each bargraph to indicate the channel mix selections. These LEDs are used to indicate the speaker mix of
selected channels. See
Item 3
for channel mix information. See
Item 7b
on page
18
for a description of the function of the
CHANNEL MIX LEDs
.
User Interface Controls and LCD Display
See the
User Interface Features
section starting on page
18
and the
User Interface Function Guide
starting on page
23
for instructions on the use of the
User Interface Buttons
and the
LCD Display
.
Audio Level Meters (1-8)
Source channels
1-8
are displayed via eight audio level meters (four on the
left
side of the front panel; four on the
right
side).
Meters are high-resolution LED bargraph displays with PPM dot over VU bar ballistic characteristics. In the
AMP2
model these
level meters are 53-segment bargraphs with a dynamic range of -66 dB. In the
AMP1
models these level meters are 26-segment
bargraphs with a dynamic range of 60 dB.
Balance Control
This control changes the volume balance between the left and right speaker channels. Please note that this control attenuates
the signal from the source, so that the left and right
bass
frequencies (summed together and reproduced in the woofer
channel) will respond to balance adjustments in tandem with the left and right speaker channels. See page
39
for more
information concerning the
AMP-S8
balance control characteristics.
