User Guide Audio Products XTRA™ Series Half-Rack Audio Power Amplifiers 68-1351-01 Rev.
Safety Instructions • English Warning This symbol is intended to alert the user of important operating and maintenance (servicing) instructions in the literature provided with the equipment. Power sources • This equipment should be operated only from the power source indicated on the product. This equipment is intended to be used with a main power system with a grounded (neutral) conductor. The third (grounding) pin is a safety feature, do not attempt to bypass or disable it.
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 provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications.
Contents Introduction.................................................. 1 About this Manual............................................ 1 Terms Used in this Manual............................ 1 Features............................................................ 1 Installation.................................................... 3 Application Examples........................................ 3 Mounting the XPA 1002 and XPA 2001............ 4 Tabletop Use.................................................
Introduction About this Manual This manual contains information about the Extron XTRA Series of power amplifiers. • XPA 1002 two-channel stereo audio power amplifier • XPA 2001-70V mono audio power amplifier • XPA 2001-100V mono audio power amplifier Terms Used in this Manual The terms “amplifier” and “power amplifier” are used interchangeably in this manual to refer to all of the XPA models. XPA 2001 refers to both the XPA 2001-70V and the XPA 2001-100V.
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 circuits. This eliminates the need for power sequencing. Flexible Conduit Adapter Kit, part # 70-228-02 — Suitable for use in other environmental air space in accordance with section 300.
Installation This section discusses how to install the XTRA Series of audio power amplifiers. Topics that are covered, include: • Application Examples • Mounting the XPA 1002 and XPA 2001 WARNING: Failure to follow these instructions may result in serious injury. Installation and service must be performed by authorized personnel only. See “UL Guidelines for Rack Mounting” on page 4. Application Examples The following illustrations are application examples for the XPA 1002 and the XPA 2001.
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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. Circuit overloading — Consideration should be given to the connection of the equipment to the supply circuit and the effect that overloading of the circuits might have on overcurrent protection and supply wiring. Appropriate consideration of equipment nameplate ratings should be used when addressing this concern. 5.
Rack Mounting Ventilation Recommendations Excessive heat can decrease the optimal lifetime of the power amplifier. An over temp indicator LED on the front panel of the amplifier lights red whenever the recommended operating temperature has been exceeded. See “Front Panel Features and Operation” on page 9. To reduce the chances for an over temp condition, the XPAs should be arranged in a rack environment so that adequate airflow is available both above and below the XPA whenever possible.
NOTE: If needed, Extron recommends 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 replace the XPA’s IEC power cord with conduit, where required by local codes. WARNING: Failure to follow these instructions may result in serious injury. Make sure that the source device and the XPA are turned off and disconnected from the power source before you begin.
Blue Wire Brown Wire 100- 240V 1.3A 50-6 0H z N L Remove nut Remove screws (both sides) to release IEC connector plate. Figure 6. Removing the IEC Connector 4. Remove the ground wire nut from the grounding stud on the bottom of the enclosure, as shown above. 5. Remove the 2 screws from the IEC plate, and remove the IEC connector plate and the attached wires through the rear panel of the XPA, as shown above. 6. Thread the 18-gauge power wires through the length of the electrical conduit tube. 7.
Operation This section discusses how to operate the XTRA Series of audio power amplifiers.
c Limiter/Protect indicator LEDs (channels 1 and 2) — These LEDs (representing output channels 1 and 2) light red under three circumstances: 1 2 LIMITER/PROTECT • When the output wiring is shorted together • When audio clipping occurs, the corresponding channel’s LED blinks once per clip occurrence. • When the amplifier overheats, both LEDs are lit. The LEDs are not lit after the amplifier recovers from the overheated condition. NOTE: d These LEDs are also located on the rear panel.
Rear Panel Features and Operation 2 1 2 LIMITER/PROTECT 1 2 12 10 8 14 6 14 4 2 SIGNAL 0 XPA 1002 Rear Panel 3 REMOTE INPUTS 2 1 12 10 8 10V 50mA G 6 4 2 0 4 STANDBY ATTENUATION 1 V C G 5a 8Ω/4Ω OUTPUTS 2 1 CLASS 2 WIRING 6 7a 2 0.
d Attenuation (channels 1 and 2) — 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. NOTES: • On the XPA 2001, 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.
â Balanced or unbalanced stereo or mono audio input connector (XPA 2001) — Wire the 3.5 mm 5-pin captive screw connector for balanced or unbalanced input.
• Pin 5 connected to ground (pin 4) places the amplifier in standby mode. Standby mode turns off all output, although the amplifier is still receiving power. Use the included 2-pin, 3.5 mm captive screw connector to remotely ground pin 5. The power indicator LED lights amber when the amplifier is in standby mode.
To wire the stereo audio output connector: Step 1: Strip and insert the speaker wires into the connector and tighten the captive screws. Be sure to observe the correct polarity. Do not tin the wires! Step 2: Insert the wired connector into the amplifier output and secure the locking screws on either side. S UT TP 8Ω Ω /4 OU 2 1 S2 NG RI WI S LA C ç Mono audio output connector — Marked “+” and “-”, wire the included 2-pole, 5 mm screw lock captive screw connector for mono audio.
To wire the mono audio output connector: Step 1: Strip and insert the speaker wires into the connector and tighten the captive screws. Be sure to observe the correct polarity. Do not tin the wires! Step 2: Insert the wired connector into the amplifier output and secure the locking screws on either side.
Remote Volume Control Options for remote control of the XPA amplifiers include the Extron VCM 100 and VC 50 volume controllers. Third party 10k potentiometer volume controllers can also be connected to this port. As shown in the following illustration, pin V (1) on the XPA is a 10 VDC reference voltage. Pin C (2) is the volume control DC voltage input. The range is 0 to 10 V, where 0 V is mute and 10 V provides maximum volume. Pin G (3) is ground. NOTE: All nominal levels are at ±10%.
Controlling Multiple Amplifiers with One Volume Controller Several XPA 1002 and XPA 2001 units can be daisy-chained so that one volume controller can simultaneously regulate the volume of all the amplifiers. NOTES: • As additional amplifiers are added to the daisy chain, the sensitivity of the volume potentiometer will change. The maximum volume level (fully clockwise) will not be affected.
Bridged Mono Output The power output of the XPA 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 XPA 1002 model. • The minimum load impedance when bridging is 8 ohms. To bridge the output, follow the steps and refer to the diagram below: 1. Unplug the IEC power cord from the power amplifier. 2. Fully attenuate the potentiometer. 3.
Troubleshooting The front and rear 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 Signal LED Color State Problem Description Problem Solution Amber Not lit No output signal Green or Amber Lit Slow to promptly exit intermittently standby mode with signal present.
Limiter/Protect LED Warning Indicators The output channel (channels 1 and 2) Limiter/Protect LED lights red 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 the amplifier and causing clipping. Lights steady The amplifier may be overheating.
References 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 XPA 1002 two-channel power amplifier Replacement part number 60-849-01 or XPA 2001-70V single-channel power amplifier 60-850-01 or XPA 2001-100V single-channel power amplifier 60-850-11 (1) 4-pole screw lock 5.08 mm captive screw plug (XPA 1002) 100-464-01 (1) 2-pole screw lock 5.
Extron Warranty Extron Electronics warrants this product against defects in materials and workmanship for a period of three years from the date of purchase.
