Extron electronics XPA U 1004 SB Manual de usuario

XPA U 1004 SB and XPA U 2002 SB • Setup Guide

The Extron XPA U 1004 SB is a 4-channel power ampliﬁer for use in low-impedance speaker systems or high-impedance line

distribution audio systems, while the XPA U 2002 SB is a 2-channel power ampliﬁer with the same usage.

The XPA U 1004 SB and XPA U 2002 SB are 1U high, half rack width, and rack mountable. The ampliﬁers have mounting holes for 9”

and deeper rack shelves, and are plenum rated with an optional ﬂex conduit adaptor. The units are convection cooled.

This guide provides instructions for an experienced installer to set up and operate both the XPA U 1004 SB and XPA U 2002 SB power

ampliﬁers. For full installation, conﬁguration, and operation details, see the XPA U 1004 SB and XPA U 2002 SB User Guide available at

www.extron.com.

Installation Steps

Step 1 — Mounting

Turn off all of the equipment and disconnect it from the power source. Mount the ampliﬁer as required; the unit can be securely

mounted in a variety of locations using optional Extron Mounting Brackets and accessories (see the Extron website for compatible

optional mounting accessories) or using the included 3-piece bracket system. The brackets do not come attached to the ampliﬁer.

Below are two methods of rack mounting the ampliﬁers.

Rack Ear Mounting (Single Unit)

The XPA U 1004 SB and XPA U 2002 SB ship with a set of rack ears, allowing the ampliﬁer to be installed in a full rack-width space.

Mount the ampliﬁer with rack ears as follows:

1. If the ampliﬁer has its ﬂat bottom rubber feet installed, remove them.

2. Attach the rack ears to the sides with the four provided #6 machine screws (1).

3. Insert the ampliﬁer into the rack and align the holes in the rack ears with the holes on the rack.

4. Secure the ampliﬁer to the rack using the four provided 10-32 x 3/4” screws (2).

Figure 1. XPA U 1004 SB and XPA U 2002 SB Rack Ear Mounting

figure 1

XPAU 1004 SERIES

1 2 3 4

OVER

TEMP LIMITER/PROTECT

SIGNAL

POWERAMPLIFIERS

XPAU 1004 SERIES

123 4

OVER

TEMP LIMITER/PROTECT

SIGNAL

POWERAMPLIFIERS

IMPORTANT:

Go to www.extron.com for the

complete user guide, installation

instructions, and specifications.

Bridge Plate Rack Mounting (Side-by-Side)

The XPA U 1004 SB and XPA U 2002 SB ship with a bridge plate connector to connect two ampliﬁers together and form a full rack-

width unit. Mount and connect two ampliﬁers as follows:

1. If the ampliﬁer has its ﬂat bottom rubber feet installed, remove them.

2. Position two ampliﬁers upside down and next to each other as shown below.

3. Use the bridge plate connector and the four provided #4 machine screws to connect the two units together (1).

4. Attach the two short rack ears to the units with the four provided #6 machine screws (2).

5. Insert the ampliﬁer into the rack and align the holes in the rack ears with the holes on the rack.

6. Secure the ampliﬁer to the rack using the four provided 10-32 x 3/4” screws (3).

XPA U 1004 SERIES

1 2 3 4

OVER

TEMP LIMITER/PROTECT

SIGNAL

POWER AMPLIFIERS

XPA U 1004 SERIES

12 3 4

OVER

TEMP LIMITER/PROTECT

SIGNAL

POWER AMPLIFIERS

Mounting

screws (4)

XPAU 1004 SERIES

1 2 3 4

OVER

TEMP LIMITER/PROTECT

SIGNAL

POWERAMPLIFIERS

XPAU 1004 SERIES

12 3 4

OVER

TEMP LIMITER/PROTECT

SIGNAL

POWERAMPLIFIERS

Figure 2. XPA U 1004 SB/XPA U 2002 SB Bridge Plate

Rack Mounting

Ventilation Recommendation

Excessive heat can decrease a power ampliﬁer’s lifetime. An Over

Temp LED indicator on the front panel lights red when the maximum

recommended operating temperature of +122 °F (+50 °C) has been

surpassed.

To minimize the chances of overheating, the ampliﬁer should be arranged

in a rack so that the evironment does not reach or surpass +122 °F (+50

°C). See the image to the right to see the most optimal way to arrange the

XPA U 1004 or XPA U 2002 SB. No more than four stacks of ampliﬁers

in a one-on-top-of-the-other arrangement should occur without an open

between the stacks.

The XPA U 1004 SB and XPA U 2002 SB can also be arranged directly

above or below a non-XPA Ultra device, but in any case, the environment

should still not reach or exceed +122 °F (+50 °C).

figure 2

Vent Space

XPA U 1004 SB and XPA U 2002 SB • Setup Guide (Continued)

Set Ampliﬁer Output Mode

Step 2 — Rear Panel Conﬁguration

Follow the instructions below to learn how to conﬁgure the rear panel for both the XPA U 2002 SB and XPA U 1004 SB. Both units are

conﬁgured in the same way.

• Wire the source output to the Line Input 3.5mm captive screw port as shown below. Figure 3 shows both balanced and

unbalanced inputs.

NOTE: In bridged mono output modes, only the odd-numbered input connector is used.

• Set the output mode for a selected channel pair by adjusting the 8-position rotary switch. There are two Stereo modes and six

Bridged Mono modes.

• For stereo modes, connect a four 4-pin, 5 mm captive screw connector for two channels of speaker outputs. Each port has a

screw ange to secure the plug to the connector.

• For mono modes, connect the same 4-pin, 5 mm captive screw connector but wire only the middle speaker output pins for a

single channel of speaker output. See Figure 3 to learn how to wire the speaker output.

ATTENTION:

• Do not tie channel output pins to each other or to ground. Doing so will short out the outputs, damage the ampliﬁer, or

both.

• Ne pas lier les sorties 1 et 2 des canaux entre elles ou à la terre. Les sorties pourraient être court-circuitées et/ou

l’ampliﬁcateur pourrait être endommagé.

• To avoid risk of damage to the ampliﬁer or the speakers, always connect low-impedance speaker loads (8Ω/4Ω) and

high-impedance speaker loads (70V) to the appropriately marked output connectors on the ampliﬁer.

• Pour éviter tout risque de détérioration de l’ampliﬁcateur ou des enceintes, connectez toujours les charges de l’enceinte

faible impédance (8Ω/4Ω) et les charges de l’enceinte haute impédance (70V) aux connecteurs de sortie correctement

identiﬁés sur l’ampliﬁcateur.

NOTE:

• You must use Class 2 wiring for this output to comply with UL requirements.

• XPA U 2002 SB is shown. Channels 3 and 4 of the XPA U 1004 SB are congured in the same way.

100-240V --A, 50-60 Hz

CLASS 2 WIRING

∞

21 0

∞

12 12

GCV

STANDBY

SIGNAL

LIMITER/

PROTECT

ATTENUATION OUTPUT MODE

INPUTS

REMOTE OUTPUTS

XPA U 2002 SB

()

1&2

BRIDGED

MONO 70V

70V (HPF OFF)

100V

100V (HPF OFF)

STEREO

4Ω

8Ω

1&2

16Ω

Stereo

Balanced Input

Stereo

Unbalanced Input

Dual Mono

Balanced Input

Dual Mono

Unbalanced Input

Stereo 8Ω or 4Ω Output Modes

100-240V --A, 50-60 Hz

CLASS 2 WIRING

∞

21 0

∞

12 12

GCV

STANDBY

SIGNAL

LIMITER/

PROTECT

ATTENUATIONOUTPUT MODE

INPUTS

REMOTE OUTPUTS

XPA U 2002 SB

()

1&2

BRIDGED

MONO 70V

70V (HPF OFF)

100V

100V (HPF OFF)

STEREO

4Ω

8Ω

1&2

16Ω

Mono

Balanced Input

Mono

Unbalanced Input

Bridged Mono 8Ω/16Ω/70V/100V Modes

CH 2

CH 1

Stereo 8Ω or 4Ω

Speaker Loads

Mono 8Ω, 16Ω, 70V,

or 100V Speaker Loads

CH 1

Sleeves

"(5 mm) MAX.

Tip

Sleeves

Tip

Ring

Use CH 1 Attenuator to

set level for bridged

output (CH 2 is ignored)

Set Output Mode to appropriate

bridged mono setting (8Ω,16Ω,

70V, 100V). Use HPF OFF only

if HPF present in upstream DSP.

Wire CH 1 input

connector based on

source as shown below

Sleeves

Tip

Ring

Tip

Ring

Sleeves

Tip

Sleeves

Tip

Ring

Sleeves

Tip

Do not tin

the wires!

"(5 mm) MAX.

Do not tin

the wires!

Use both CH 1 and CH 2

Attenuators (set

levels independently)

Set Output Mode to

appropriate stereo

setting (8Ω or 4Ω)

Wire CH 1 and CH 2

input connector based

on source as shown below

Wire output connector

to speaker loads as

shown to the right

Wire output connector

to mono speaker load

as shown to the right

Figure 3. XPA SB Conﬁguration Based on Output Mode

figure 3

XPA U 1004 SB and XPA U 2002 SB • Setup Guide (Continued)

Step 3 — Remote Ports

XPA U 2002 SB XPA U 1004 SB

STANDBY

REMOTE

1 & 2

STANDBY

1 & 2

GV C

3 & 4

REMOTE

Figure 4. Remote Volume Control and Standby Ports

The 3.5 mm 5-pin captive screw remote control port (shown above) is used to control volume on channels 1 & 2 on pins 1, 2, and 3,

and standby mode through contact closure on the pins 4 and 5. The XPA U 1004 SB has a an additional 3-pole captive screw port

directly above this port to control the volume on channels 3 & 4.

The volume control ports can be wired to Extron remote volume controllers such as an Extron VC 50, VCM 110 AAP, VCM 200 series,

MLA VC10 Plus, and select MLC controllers. For more details on wiring the volume control ports see the XPA U 1004 SB and XPA U

2002 SB User Guide.

When the STANDBY pin (pin 5) is shorted to ground (Pin 4), the amplifier goes into standby mode. Standby mode turns off all the

outputs, although the amplifier still receives power. The power LED on the front panel lights amber when the amplifier is in Standby

mode.

NOTE: A 10k ohm resistor is included with the amplifier. If the resistor is connected between the STANDBY and Ground

pin, the auto-standby timer is suppressed. The STANDBY pin can still be shorted to the Ground pin to put the amplifier in

standby.

Step 4 — Powering on Equipment

ATTENTION:

• The ampliﬁer must be powered on last.

• L’ampliﬁcateur doit être mis sous tension en dernier.

Reconnect all the power cables and switch on all of the other equipment before attaching the IEC power cable and powering on the

unit. The power LED will light green.

Step 5 — Adjusting Attenuation

NOTE: Set the volume control on the connected control device(s) to maximum and ensure that the amplifier

is not currently forced into standby mode via the standby pin prior to making adjustments.

NOTE: When a channel pair is in bridged mono mode, only the odd channel’s attenuator knob is used.

Adjust audio attenuation using the rear panel adjustment attenuators as seen to the right.

See Rear Panel Features in the XPA U 1004 SB and XPA U 2002 SB User Guide for more information.

Step 6 — Checking LEDs

Check the Limiter/Protect and Signal LEDs on the front and rear panels to see if any problems are encountered (see Front Panel

Features and Troubleshooting in the XPA U 1004 SB and XPA U 2002 SB User Guide for more information)

figure 4

All trademarks mentioned are the property of their respective owners.

Worldwide Headquarters: Extron USA West, 1025 E. Ball Road, Anaheim, CA 92805, 800.633.9876

For information on safety guidelines, regulatory compliances, EMI/EMF compatibility, accessibility, and related topics, see the

Extron Safety and Regulatory Compliance Guide on the Extron website.

68-1351-50 Rev. A

07 20

∞

43 0

∞

ATTENUATION

XPA U 1004 SB and XPA U 2002 SB • Setup Guide (Continued)

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