Operation, cont’d

NOn the XPA 2001, the single control adjusts the levels of both channels simultaneously prior to summing them together.

To adjust the XPA amplifier's input level, 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 level(s) of

 

the XPA fully counterclockwise.

2.

Set the source device's volume to its maximum volume

level. No sound should come out.

3. Return to the XPA amplifier and raise the level(s) until sound distortion occurs, then lower the level(s) slightly until any distortion disappears. This setting ensures that, whatever the source device volume setting may be, no clipping occurs.

NWhen setting volume control through a source device, ensure that the device's volume is set to variable out. Consult the device's user manual for detailed instructions on its calibration.

ÀBalanced or unbalanced stereo audio input connector — Wire the 3.5 mm 5-pin captive screw connector for balanced or unbalanced input.

Tip

L

Tip

Sleeve

Ring

 

Tip

 

Sleeves

R

Tip

Sleeve

Ring

 

 

Unbalanced Mono Input

Balanced Mono Input

 

 

(high impedance)

 

Do not tin the wires!

F

Remote control connector — The 3.5 mm 5-pin captive screw

 

receptacle is used to remotely control two functions through

contact closure: See the following circuit diagram.

Pins 1, 2, and 3 control volume by varying the DC voltage from 0 V (full attenuation) to 10 V (maximum volume) with full muting in effect when pin 2 is connected to ground (pin3). Use the included 3-pin captive screw connector. See "Remote volume control" in this chapter.

10V 50 mA

VOL/MUTE

1

2

3

Tip

L

Tip

L

Sleeve

Ring

Tip

 

Sleeves

 

R

Tip

R

Sleeve

Ring

 

 

Unbalanced Stereo Input

 

 

 

Balanced Stereo Input

 

 

 

 

 

 

 

Do not tin the wires!

NThe XPA 1002's output power can be effectively doubled by using only one input channel and bridging the output. The XPA 1002 will output 200 watts @ 8 ohms or 120 watts @ 16 ohms in bridged mode.

See "Bridged mono output" in this chapter for wiring instructions when bridging the XPA 1002.

ÂBalanced or unbalanced mono audio input connector — Wire the 3.5 mm 5-pin captive screw connector for balanced or unbalanced input.

MAX

2K OHMS

10K OHMS

MIN

STANDBY

1 10 V

2 VOL/MUTE

MUTE SWITCH

3 GND

MUTE

VOLUME

3-6

XTRA Series • Operation

XTRA Series • Operation

3-7

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Extron electronic XPA 1002, XTRA SERIES Operation, cont’d, To adjust the XPA amplifiers input level, do the following

XPA 1002, XPA 2001100V, XPA 200170V, XTRA SERIES specifications

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