Extron electronic XPA1002 manuale d’uso

User Guide XTRA ™ Series Audio Products Half-Rack Audio P ower Amplifiers 68-1351-01 Rev . D 07 12[...]

This symbol is intended to alert the user of important operating and mainte- nance (servicing) instructions in the literature provided with the equipment. This symbol is intended to alert the user of the presence of uninsulated dangerous voltage within the product’ s enclosure that may present a risk of electric shock. Caution Read Instructions ?[...]

FCC Class B Notice This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to pr ovide reasonable pr otection against harmful interference in a r esidential installation. This equipment generates, uses, and can radiate radio frequency energy and[...]

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Contents Introduction ................................................. 1 About this Manual ........................................... 1 T erms Used in this Manual ........................... 1 Features ........................................................... 1 Installation ................................................... 3 Application Examp[...]

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Intr oduction About this Manual This manual contains information about the Extron XTRA Series of power ampliers. • XP A 1002 two-channel stereo audio power amplifier • XP A 2001-70V mono audio power amplier • XP A 2001-100V mono audio power amplier T erms Used in this Manual The terms “amplifier” and “power amplifier” are [...]

Convection cooled — The XTRA Series of amplifiers are convection cooled without the need for fans, ensuring quiet, reliable operation. Ultra low inrush current - no need for power sequencing — Allows many XTRA Series amplifiers to be powered on simultaneously without overloading power cir cuits. This eliminates the need for power sequencing. [...]

Installation This section discusses how to install the XTRA Series of audio power amplifiers. T opics that are covered, include: • Application Examples • Mounting the XP A 1002 and XP A 2001 WARNING: Failur e to follow these instructions may result in serious injury . Installation and service must be performed by authorized personnel only . Se[...]

50/60 Hz 100-240V 0.3A L 1 R L 2 R L 3 R L 4 R L 1 R L 2 R L 3 R L 4 R L 1 R L 2 R L 3 R L 4 R L 3 R L 4 R I N P U T S O U T P U T S C O N T R O L I N P U T S O U T P U T S RESET ACT LINK RS-232 1 2 3 4 1 5 6 7 8 1 9 10 11 12 1 2 2 2 COM PUT ER IN CO MPU TER OU T VID EO IN S-V IDE O I N OUT OUT C OMP UTE R VIDEO S -VI DEO V ARIBL E LIMITER/PROTECT [...]

3. Mechanical loading — Mounting of the equipment in the rack should be such that a hazardous condition is not achieved due to uneven mechanical loading. 4. Cir cuit overloading — Consideration should be given to the connection of the equipment to the supply circuit and the ef fect that overloading of the circuits might have on overcurr ent pro[...]

Rack Mounting V entilation 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 r ed whenever the recommended operating temperature has been exceeded. See “ Fr ont Panel Features and Operation ” on page 9 . T o reduce the chances for an [...]

NOTE: If needed, Extron r ecommends using a UL-rated crimp tool to terminate the spade connectors. One recommended choice is the Molex crimp tool (Molex part #64001-0100). The kit provides a convenient means to r eplace the XP A ’ s IEC power cord with conduit, where r equired by local codes. WARNING: Failur e to follow these instructions may res[...]

100-240V 1.3A 50-60Hz Re mo ve scr ew s (both sides) to re lease IEC connec to r plat e. Re mo ve nu t Blue Wire Br ow n Wire L N Figure 6. Removing the IEC Connector 4. Remove the gr ound wire nut fr om the grounding stud on the bottom of the enclosure, as shown above. 5. Remove the 2 scr ews from the IEC plate, and r emove the IEC connector plate[...]

Operation This section discusses how to operate the XTRA Series of audio power amplifiers. T opics that are covered, include: • Front Panel Featur es and Operation • Rear Panel Features and Operation Fr ont Panel Features and Operation XP A 1002 12 LIMITER/PROTECT SIGNAL OVER TEMP XP A 10 02 Fr ont Panel 1 3 2 4 XP A 2001 LIMITER/PROTECT SIGNA[...]

c Limiter/Protect indicator LEDs (channels 1 and 2) — These LEDs (r epresenting output channels 1 and 2) light red under thr ee circumstances: 12 LIMITER/PRO TECT • When the output wiring is shorted together • When audio clipping occurs, the corresponding channel’ s LED blinks once per clip occurrence. • When the amplier overheats, bot[...]

Rear Panel Featur es and Operation 100-240V 0.5A, 50-60Hz XP A 2001-70V LIMITER/PROTECT SIGNAL 0 2 4 6 8 10 12 18 14 26 ∞ ATTENU AT ION HPF 70 V OUTPUT REMOTE INPUTS CLASS 2 WIRING G G C V L (SUMMED) R 10V 80 Hz OFF 50mA STANDBY XP A 2001-70V Rear Panel 1 3 4 6 2 7b 5b 8 1 1 2 LIMITER/PROTECT SIGNAL 2 STANDBY CLASS 2 WIRING 1 2 G 1 2 A TTENUA TIO[...]

d Attenuation (channels 1 and 2) — Use a small screwdriver to adjust the audio input level for the corresponding channel. The analog potentiometers contr ol the level from = (full attenuation) to 0 dB. NOTES: • On the XP A 2001, the single control adjusts the levels of both channels simultaneously prior to summing them together . • On some mo[...]

â Balanced or unbalanced stereo or mono audio input connector (XP A 2001) — Wire the 3.5 mm 5-pin captive screw connector for balanced or unbalanced input. Do not tin the wires! Unbalanced Mono Input Tip Slee ve LR Balanced Mono Input Tip Ring Slee ve LR Balanced Stereo Input Tip Ring Tip Ring Slee ve s LR Unbalanced Stereo Input Tip Slee ve Sle[...]

• Pin 5 connected to ground (pin 4) places the amplifier in standby mode. Standby mode turns off all output, although the amplier is still receiving power . Use the included 2-pin, 3.5 mm captive screw connector to r emotely ground pin 5. The power indicator LED lights amber when the amplier is in standby mode. Re mo te Switching to Standb[...]

T o wire the stereo audio output connector: Step 1: Strip and insert the speaker wires into the connector and tighten the captive screws. Be sur e to observe the correct polarity . Do not tin the wires! Step 2: Insert the wired connector into the amplifier output and secur e the locking screws on either side. 8Ω / 4Ω OUTPUTS CLASS 2 WIRING 1 2 ?[...]

T o wire the mono audio output connector: Step 1: Strip and insert the speaker wires into the connector and tighten the captive screws. Be sur e to observe the correct polarity . Do not tin the wires! Step 2: Insert the wired connector into the amplifier output and secur e the locking screws on either side. 70 V OUTPUT CLASS 2 WIRING h High pass ?[...]

Remote V olume Control Options for remote contr ol of the XP A ampliers include the Extron VCM 100 and VC 50 volume controllers. Thir d party 10k potentiometer volume controllers can also be connected to this port. As shown in the following illustration, pin V (1) on the XP A is a 10 VDC reference voltage. Pin C (2) is the volume control DC volt[...]

Controlling Multiple Amplifiers with One V olume Controller Several XP A 1002 and XP A 2001 units can be daisy-chained so that one volume controller can simultaneously regulate the volume of all the amplifiers. NOTES: • As additional amplifiers ar e added to the daisy chain, the sensitivity of the volume potentiometer will change. The maximum [...]

Bridged Mono Output The power output of the XP A 1002 can be effectively doubled by bridging the output. Bridging allows power to be output in mono at 200 watts at 8 ohms. NOTES: • The bridging instructions that follow apply only to the XP A 1002 model. • The minimum load impedance when bridging is 8 ohms. T o bridge the output, follow the step[...]

T r oubleshooting The front and r ear panels have LED warning indicators, as described in the following diagnostic information. Amplifier Fails to Exit Standby Mode Promptly The input channel (channels 1 and 2) Signal LED lights green per indicated input channel when an input signal is detected. Power LED Color Signal LED State Problem Description[...]

Limiter/Protect LED W arning Indicators The output channel (channels 1 and 2) Limiter/Protect LED lights r ed per indicated output channel as shown in the following diagnostic information. LED State Problem Description Problem Solution Blinks Audio clipping is occurring at the rate of one blink per clip. Reduce the power output to avoid overdriving[...]

Refer ences This section discusses the part numbers and accessories for the XTRA Series of half-rack audio power amplifiers. Part Numbers and Accessories Included parts Included parts Replacement part number XP A 1002 two-channel power amplifier 60-849-01 or XP A 2001-70V single-channel power amplier 60-850-01 or XP A 2001-100V single-channel [...]

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