Full attenuation) to 0 db (no attenuation) – Extron Electronics XTRA Series User Manual
Page 18
d
Attenuation — Use a small screwdriver to adjust the audio input level for the
corresponding channel. The analog potentiometers control the level from
=
(full
attenuation) to 0 dB (no attenuation).
XPA 1002 Series
XPA 2001 Series
0
2
4
6
8
10
12
18
14
26
∞
0
2
4
6
8
10
12
14
∞
2
1
ATTENUATION
0
2
4
6
8
10
12
18
14
26
∞
ATTENUATION
LEVEL
1
2
0
0
LEVEL
0
XPA 1002
XPA 2001 Series
NOTES:
•
On the XPA 2001 models, the single control adjusts the levels of both
channels simultaneously prior to summing them together.
•
On some models, this adjustment is referred to as “level”. The function is the
same, whichever way your product is labeled.
To adjust the attenuation level of the XPA amplifier, do the following:
1.
If connecting to a source device with a volume control (variable output), ensure
that the volume on the source device is set to its lowest point, then adjust the
attenuation of the XPA fully counterclockwise.
2.
Set the volume of the source device to its maximum volume level. No sound
should be heard.
3.
Return to the XPA amplifier and raise the attenuation until sound distortion
occurs, then lower the level slightly to remove any distortion. This setting ensures
that, whatever the source device volume setting is, no clipping occurs.
NOTE: When setting volume control through a source device, ensure that the
volume of the device is set to variable out. Consult the user manual of the
device for detailed instructions on its calibration.
à
Balanced or unbalanced stereo or mono audio input connector
(XPA 1002 series) — Wire the 3.5 mm 5-pin captive screw connector for balanced
or unbalanced input as show in the diagram on the following page.
NOTE: The power output of the XPA 1002 series amplifiers can be effectively
doubled by bridging the output. A mono source is wired to both the left and
right input while the output is wired for bridged operation. Bridging allows
power to be output at 200 watts into 8 ohms. The minimum load impedance
when bridging is 8 ohms (see the wiring instructions beginning on page
).
XTRA Series Half-Rack Audio Power Amplifiers • Operation
12