Extron electronics XPA U 2004 FX Manual de usuario

IMPORTANT:

Go to www.extron.com for the

complete user guide and installation

instructions before connecting the

product to the power source.

www.extron.com

XPA U Full Rack Series Audio Power Ampliﬁers • Setup Guide

This guide provides startup instructions for experienced, professional installers to set up and operate the XPA U Full Rack Series

audio power ampliers:

• XPA U 2004 FX — 4 x 200 watts per channel at 8Ω, 4Ω, 70V, or 100V

• XPA U 2008 FX — 8 x 200 watts per channel at 8Ω, 4Ω, 70V, or 100V

For information not included in this setup guide, see the XPA U Full Rack Series User Guide, at www.extron.com.

WARNING: Installation and service must be performed by experienced, professional installers only.

AVERTISSEMENT : L’installation et l’entretien doivent être effectués par des installateurs professionnels

expérimentés.

Rack Mounting

Before mounting the ampliers, ensure that power to the amplier is turned off.

Turn off all other equipment and disconnect the power cables. Verify that the amplier is disconnected from the power source

before proceeding.

The XPA U Full-Rack Series ships with two rear rack ears to provide additional stability and support for the amplier. Each rear

rack ear attaches to the amplier by means of two SEMS screws that connect though slots in the two support anges on the

enclosure that extend past the rear panel, through the slots in the rear rack ear and into the backing plate. The backing plate

comes loosely attached to the rear rack ear, which allows it to slide along the slots. The rear rack ears will support rack rail

depths of 15.69" (399 mm) to 26.34" (669 mm), as measured from outward-facing surfaces of the front and rear rack rails.

16.49" (419 mm)

26.34" (669 mm)

27.04" (689 mm)

16.39" (416 mm)

15.69" (399 mm)

Figure 1. XPA U Full Rack Series Side View

XPA U Full Rack Series Audio Power Ampliﬁers • Setup Guide (Continued)

To install the amplier into the equipment rack, follow these steps:

Screws

ont Rack Ear

Screws

Rear Rack Ear

Equipment Rack

Figure 2. Installing XPA U Full Rack Series — 1

1. Attach the front rack ears of the ampier to the front of the rack, using the four provided screws (1).

2. The rear rack ears are installed into the corresponding position on the rails on the back side of the equipment rack (2).

3. Slide the backing plate into the slots in the support anges (3).

The screws are loosened just enough to allow the backing plate to easily slide into the slots in the support anges without

getting the washers caught between the ange and the rear rack ear, but not so much that the backing plate is disassembled

from the rear rack ear.

4. Tighten down the backing plate screws.

Rack Mounting Ventilation Recommendations

Excessive heat can decrease the optimal lifetime of the power amplier. An over temp indicator LED on the front panel of the

amplier lights red whenever the recommended operating temperature has been exceeded.

To reduce the chances of an over temp condition, the XPA U Full Rack Series Audio Power Ampliers should be arranged in a

rack environment so the environment around the amplier does not reach or exceed +122°F (+50°C).

These ampliers are cooled by forced air, with front to back airow. Care must be taken not to obstruct the airow at the intake

and exhaust vents.

XPA U Full Rack Series Connections and Controls

XPA U 2004 FX

100-240V

--A, 50-60Hz

REMOTE

LIM/

PRT

(HPF OFF)

70V70V

100V

8Ω

4Ω

SIG

ATTENUAT IONOUTPUT MODE

∞

LIM/

PRT

(HPF OFF)

70V70V

100V

8Ω

4Ω

SIG

ATTENUATION OUTPUT MODE

∞

LIM/

PRT

(HPF OFF)

70V70V

100V

8Ω

4Ω

SIG

ATTENUATION OUTPUT MODE

∞

LIM/

PRT

(HPF OFF)

70V70V

100V

8Ω

4Ω

SIG

ATTENUAT IONOUTPUT MODE

∞

INPUTS

1234 GSTANDBY

1 2 3 4

OUTPUTS

XPA U 2008 FX

100-240V

4.0A, 50-60Hz

REMOTE

LIM/

PRT

(HPF OFF)

70V70V

100V

8Ω

4Ω

SIG

ATTENUAT IONOUTPUT MODE

∞

LIM/

PRT

(HPF OFF)

70V70V

100V

8Ω

4Ω

SIG

ATTENUATION OUTPUT MODE

∞

LIM/

PRT

(HPF OFF)

70V70V

100V

8Ω

4Ω

SIG

ATTENUATION OUTPUT MODE

∞

LIM/

PRT

(HPF OFF)

70V70V

100V

8Ω

4Ω

SIG

ATTENUATION OUTPUT MODE

∞

LIM/

PRT

(HPF OFF)

70V70V

100V

8Ω

4Ω

SIG

ATTENUATION OUTPUT MODE

∞

LIM/

PRT

(HPF OFF)

70V70V

100V

8Ω

4Ω

SIG

ATTENUATION OUTPUT MODE

∞

LIM/

PRT

(HPF OFF)

70V70V

100V

8Ω

4Ω

SIG

ATTENUAT IONOUTPUT MODE

∞

LIM/

PRT

(HPF OFF)

70V70V

100V

8Ω

4Ω

SIG

ATTENUATION OUTPUT MODE

∞

LIM/

PRT

(HPF OFF)

70V70V

100V

8Ω

4Ω

SIG

ATTENUATION OUTPUT MODE

∞

INPUTS

12345678GSTANDBY

5 6 7 81 2 3 4

OUTPUTS

PA U 2004 FX (top) and XPA U 2008 FX (bottom)

1234 56

1Rear Rack Ears (see Rack Mounting on page 1) 6Output Mode Selection Switch (see page4)

2IEC power connector 7Speaker output connectors (see page4)

3AC mains switch 8Line inputs (see page4)

4Channel Status LEDs 9Remote Standby Port (see page5)

5Attenuators

Figure 3. XPA U 2004 FX (top) and XPA U 2008 FX (bottom) Rear Panels

Power

ATTENTION:

• The amplier must be powered on last.

• L’amplicateur doit être mis sous tension en dernier.

Reconnect all power cables and switch on all other equipment before powering on the power amplier. The front panel power

LED of the amplier lights green.

2IEC power connector — Connect this socket to 100 - 240 VAC, 50-60 Hz mains power supply.

3AC mains switch — Toggle this switch between power on and power off.

Indicators and Settings

4Channel Status LEDs — Four (XPA U 2004 FX) or eight (XPA U 2008 FX) pairs of LEDs provide feedback about the

status of each channel. They have the same function as the corresponding front panel LEDs.

The upper Limiter/Protect LEDs light red when the channel is in protection mode, triggered by any of the limiter

protection circuits:

• Excessive clipping (providing sufcient warning before the transformer cores in a high impedance speaker

system saturate).

• Short circuit on output

The lower Signal LEDs light green when the input signal crosses the signal detection threshold.

5Attenuators

Each channel has its own potentiometer that goes from full attenuation (fully counterclockwise) to no

attenuation (fully clockwise). Each potentiometer is detented to more easily set the input signal level of

multiple channels to the same level of attenuation, and laser-etched to indicate position.

ﬁgure 3

IEC power connector

AC mains switch

LIM/

PRT

SIG

Channel Status LEDs

Attenuators

ATTENUATION

∞

XPA U Full Rack Series Audio Power Ampliﬁers • Setup Guide (Continued)

6Output Mode Selection Switch (see figure 3 on page 3)

This switch determines the function of each amplier channel. There are six settings: two low-impedance

(8 ohms, 4 ohms) and four high-impedance modes.

Low-Impedance Modes (8 ohm/4 ohm):

The 8 ohm stereo setting is used when connecting to 8 ohm speaker loads, and the 4 ohm setting is used

when connecting to 4 ohm loads.

High-Impedance Modes:

• There are four high-impedance modes available: 70V, 70V (HPF OFF), 100V, 100V (HPF OFF). These modes are used

when connecting to distributed 70 volt or 100 volt loudspeaker systems.

• In the 70V and 100V modes, an 80Hz, 12 dB/octave high-pass lter is applied to the signal, to prevent saturation of the

transformer cores in the speakers.

• In the 70V (HPF OFF) and 100V (HPF OFF) modes, the high-pass lter is disabled. The (HPF OFF) modes should only be

used when a high-pass lter will be applied in a DSP upstream of the amplier.

Connections

7Speaker output connectors (see figure 3)

Wire the speakers to the amplier output using the included 2-pole, 5.08 mm captive screw connectors

(see gure 4, A). Each port has a screw ange to secure the plug to the connector (B).

Do not tin the wires!

CLASS 2 WIRING

Figure 4. Connecting Speaker Outputs

ATTENTION:

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

amplier, 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’amplicateur pourrait être endommagé.

• To avoid risk of damage to the ampliers or speakers, ensure that the amplier output mode selection switch for

each channel is properly congured to match the type of speaker load about to be connected to the particular

output.

• Pour éviter tout risque de détérioration des amplicateurs ou des enceintes, assurez-vous que le switch de

sélection du mode de sortie de l’amplicateur est correctement conguré pour s’adapter au type de charge de

l’enceinte qui sera connectée à la sortie donnée.

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

8Line inputs (see figure 3)

Use 5-pole 3.5 mm captive screw connectors to input four (XPA U 2004 FX) or eight (XPA U 2008 FX) channels of balanced or

unbalanced line-level audio signals through these connectors.

Wire the source output to the captive screw connectors as shown in the following illustrations.

Balanced Stereo Input

Tip

Ring

Tip

Ring

Slee

ves

Unbalanced Stereo Input

Tip

Sleeve

Tip

Do not tin

the wires!

Balanced Dual Mono Input

Tip

Ring

Sleeve (s)

Tip

Ring

Unbalanced Dual Mono Input

Tip

Sleeve

Tip

Sleeve

Output Mode Selection Switch

(HPF OFF)

70V 70V

100V

8Ω

4Ω

OUTPUT MODE

Speaker output connectors

Line inputs

9Remote Port (see figure 3) — Use the 3.5 mm 2-pole captive screw connector to connect the STANDBY pin to the Gpin.

This places the amplier in standby mode.

The XPA U Full Rack Series ampliers can enter standby mode (reduced power state) if they meet one of the

following two conditions:

1. After 25 minutes (± 5 minutes) of inactivity (loss of signal)

2. Upon activation of the REMOTE port

Defeating the Standby Timer

The standby timer can be disabled by wiring the supplied 10 kΩ resistor between the Standby and Ground pins. The amplier can

still be forced into standby mode via the remote standby port, even if the inactivity timer is disabled.

The following truth table summarizes the behavior of the amplier in the various scenarios:

Remote Port Action Inactivity Timer Defeated? Time Since Last Detected Signal

Less than 25 minutes More than 25 minutes

No action (open) No Amplier remains active Amplier enters standby

Open to Close No Amplier enters standby Amplier remains in standby

Close to Open No Amplier becomes active

Timer restarts

Amplier becomes active

Timer restarts

No action (open) Yes Amplier remains active -

Open to Close Yes Amplier enters standby -

Close to Open Yes Amplier becomes active -

Front Panel Features

58761432

OVER TEMP

LIMITER/

PROTECT

SIGNAL

XPA U 2008 FX

POWER

4312

OVER TEMP

LIMITER/

PROTECT

SIGNAL

XPA U 2004 FX

POWER

34 521 1

1Groove for inserting Grille removal tool 4Over Temp LED

2Channel Status LEDs 5Removeable Plastic Grilles

3Power LED

Figure 5. XPA U 2004 FX (top) and XPA U 2008 FX (bottom) Front Panels

1Groove for inserting Grille removal tool — Insert the included plastic pry tool, athead screwdriver, or other small at

object into this groove and pull forward to remove the plastic Grille.

2Channel Status LEDs — Four (XPA U 2004 FX) or eight (XPA U 2008 FX) pairs of LEDs provide feedback about the status of

each channel. They have the same function as the corresponding rear panel LEDs (see figure 3 on page 3)).

The upper Limiter/Protect LEDs light red when the channel is in protection mode, triggered by any of the limiter protection

circuits:

• Excessive clipping (providing sufcient warning before the transformer cores in a high impedance speaker system

saturate).

• Short circuit on output

The lower Signal LEDs light green when the input signal crosses the signal detection threshold.

Remote Standby Port

REMOTE

STANDBY

ﬁgure 5

Removeable Plastic Grilles

68-3690-50 Rev. A

12 22

XPA U Full Rack Series Audio Power Ampliﬁers • Setup Guide (Continued)

All trademarks mentioned are the property of their respective owners.

Worldwide Headquarters: Extron USA West, 1025 E. Ball Road, Anaheim, CA 92905, 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.

3Power LED (see figure 5 on page 5) — A single LED power indicator will light as follows:

• Green when the unit is on and active

• Amber

• When the unit is in standby. Standby mode turns off all outputs from the amplier, although the amplier is still

receiving power.

• When DC voltage is detected on the output. This state is cleared only via reset/power down. If it is not cleared via

reset/power down, the unit may need to be serviced.

4Over Temp LED — Lights red when the amplifier has exceeded the maximum recommended operating temperature. The

amplifier self-recovers once the unit has cooled below the maximum recommended operating temperature.

Power limiting may or may not be applied at this point. This depends on the temperature of the unit.

5Removable Plastic Grilles (2) — The removable plastic grille assembly is secured to the steel front chassis by two tabs on

the inner edge that hook under the center UI section and are held in place by a neodymium magnet on the outside edge. The

grilles are removable by inserting the included plastic removal tool into the front panel groove and pulling forward.

Each plastic grille covers a foam air lter. The lters are held in place inside the grille by crush ribs along the inside edges of

the grille.

To replace the lters, remove the grille from the front panel by inserting the included plastic pry tool, athead screwdriver, or

other small at object into the groove along the outer edge of the grille and pulling forward. Remove and wash or replace the

lter.

Power LED

Over Temp LED

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