The power amplifier performs the simple but critical job of boosting the output signals from each channel of your stereo preamp or surround sound processor to the level necessary to drive your loudspeakers. While this may seem trivial, a really good power amp is essential to having a great audio system, because any flaws in the performance of your power amp are going to limit the performance of your entire system. Every amplifier in the new Third Generation XPA series was carefully designed to deliver superb technical performance, unsurpassed sound quality, and an exceptionally accurate and dynamic rendition of all types of music, thus ensuring that your entire system will sound its absolute best. Each individual XPA amplifier is modular, and can be customized to provide exactly the power and number of channels you need today, and expanded later if your needs change; and multiple matching chassis enable you to add even more channels, or more power, for a near endless variety of options.

Circuit Topology

The XPA-11 Gen3 is a fully modular audio power amplifier with a high-efficiency switch mode power supply (SMPS), independent, fully discrete, dual differential, high current, short signal path Class A/B amplifier modules, Optimized Class H™ power supply topology, and microprocessor-controlled fault protection.

The XPA-11 is powered by a high efficiency, audiophile grade, Switch Mode Power Supply (SMPS).

Audio Specifications

• The XPA-11 Gen3 features three of our High-Powered Single Channel Modules and four of our Stereo Modules.  

Audio Specifications (High-Powered Single Channel Modules):

Power Output:

• 300 watts RMS/channel; 20 Hz – 20 kHz; THD<0.1%; 8 Ohms; one channel driven

• 550 watts RMS/channel; 20 Hz – 20 kHz; THD<0.2%; 4 Ohms; one channel driven

• 300 watts RMS/channel; THD<0.1%; 8 Ohms; two channels driven

• 490 watts RMS/channel; THD<0.1%; 4 Ohms; two channels driven

Power Bandwidth (at rated power; 4 Ohm - 8 Ohm load): 20 Hz to 20 kHz (+ / – 0.1 dB)

Broad Band Frequency Response: 5 Hz to 80 kHz +0/-2 dB

THD + noise: < 0.005%; at 100 watts RMS; 1 kHz; 8 Ohms.

Signal to Noise Ratio (8 Ohm load):

• > 115 dB; ref FTC rated power; unbalanced input (A-weighted)

• > 86 dB; ref 1 watt; unbalanced input (A-weighted)

Minimum Recommended Load Impedance (per channel): 4 Ohms (which equals one 4 Ohm load or two paralleled 8 Ohm loads)

Damping Factor (8 Ohm load): > 500

Input Sensitivity (for rated power; 8 Ohm load): 1.5 V

Gain: 29 dB

Maximum Power Consumption: 2,600 watts

Note: The values shown refer to the amount of power the amplifier would consume while playing test tones continuously, on all channels, at full power, into a load bank. Therefore, they are not at all characteristic of what you would expect when playing music or the soundtrack from a movie.

Normal audio signals are dynamic, so the amount of power they require from second to second varies widely, and the average is far lower than this. With normal content, even playing very loudly, one of our amplifiers will consume far less power than indicated in the chart, so these values should not be considered a circuit requirement for normal operation. 

Input Impedance:

• 33 kOhms (balanced)

• 23.5 kOhms (unbalanced)

Audio Specifications (Stereo Modules):

Power Output:

• 65 watts RMS/channel; 20 Hz – 20 kHz; THD<0.1%; 8 Ohms; one channel driven

• 100 watts RMS/channel; 20 Hz – 20 kHz; THD<0.2%; 4 Ohms; one channel driven

• 65 watts RMS/channel; THD<0.1%; 8 Ohms; two channels driven

• 100 watts RMS/channel; THD<0.1%; 4 Ohms; two channels driven

Power Bandwidth (at rated power; 4 Ohm - 8 Ohm load): 20 Hz to 20 kHz (+ / – 0.1 dB)

Broad Band Frequency Response: 50 Hz to 80 kHz +0/-1.5 dB

THD + noise: < 0.02%; at 60 watts RMS; 1 kHz; 8 Ohms

Signal to Noise Ratio (8 Ohm load):

• > 105 dB; ref FTC rated power; unbalanced input (A-weighted)

• > 85 dB; ref 1 watt; unbalanced input (A-weighted)

Minimum Recommended Load Impedance (per channel): 4 Ohms (one 4 Ohm load or two paralleled 8 Ohm loads)

Damping Factor (8 Ohm load): > 500

Input Sensitivity (for rated power; 8 Ohm load): 0.8 V (800 mV)

Gain: 29 dB

Input Impedance:

• 33 kOhms (balanced)

• 23.5 kOhms (unbalanced)

Input And Output Connections

Input Connections (High-Powered Single Channel Modules): Unbalanced (RCA); balanced (XLR); one each per channel, independently selectable.

Input Connections (Stereo Modules):
2 Unbalanced (RCA); 2 balanced (XLR); two per channel, independently selectable.

Speaker Output Connections: Audiophile grade, gold plated, 5-way binding posts.

Trigger:

• Trigger Input: 5 – 12 V (AC or DC); <10 mA input current required.

• Trigger Output: 12 VDC; can drive any load up to 120 mA.

Power Requirements

Between 100 VAC and 250 VAC @ 50 / 60 Hz (automatically detected)

Front Panel Controls and Indicators

• Standby: push button (halo ring changes color to indicate Standby or On)

• Status LEDs: one per channel; blue

• Status LEDs change to red to indicate a fault condition.

Rear Panel Controls

AC Power switch: rocker switch (switches AC main power)

Status LEDs switch: disables front panel Status LEDs and dims Standby button halo.

Input selector switches (one per channel): 
metal toggle switches; select between balanced and unbalanced inputs.

Circuit Breaker: press button to reset circuit breaker.

Protection

The XPA Gen3 is protected against excessive operating temperature, shorted speaker connections, ground faults, and other common fault conditions.

Mechanical

Dimensions:

• 17” wide x 8” high x 19” deep (unboxed; including feet)

• 17” wide x 7” high x 19” deep (unboxed; without feet)

• 24-1/2” wide x 12” high x 24-3/4” deep (boxed)

Weight:

• 53 lbs (unboxed)

• 58 lbs (boxed)
 

Downloads

Download Product Manual