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KA-1000-THX Certified Amplifier

KA-1000-THX Certified Amplifier

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The KA-1000-THX subwoofer amplifier is the powerful driving force behind the new THX® Ultra2 system. This model offers rock-solid dependability under most demanding conditions & allows listeners to experience all the power & detail of music & movies.

This full-featured Class D amplifier, which can be conveniently located near the rest of the installation's electronics, has a built-in, defeatable, low-pass crossover and level control, boundary-gain compensation switch, completely variable phase control, and an auto power function. This high-performance amplifier has a massive toroidal power supply that is capable of delivering 1000-watts into a 4 ohm load. It can also support two high performance subwoofers and has a left and right RCA pass-through.

Finished in black with a machined aluminum front panel and knobs, the KA-1000-THX uses professional style NL2 Speakon® outputs for the high current transfer of power to the subwoofer.

The KA-1000-THX delivers a combination of flexibility, reliability and sound quality that is unmatched.


- Delivers 1000 Watts into a 4 ohm load

- Can support two high performance subwoofers

- Finished in black with a machined aluminum front panel and knobs

Klipsch KA-1000 Amplifier User's Manual


Frequency Response: 20Hz-1kHz +0/-3dB

Enclosure Type: Use only with KW-120-THX subwoofer enclosures (either one or two)

Amplifier:  High-Efficiency Class D

Amplifier Power:

FTC Rated Power:

500W into 8 ohms

 1000W into 4 ohms, 20Hz-1kHz @ <1.5% THD

Dynamic Power:

2-5-W into 8 ohms

3025W into 4 ohms @ 5% THD

Auto Power On: 2 second ON delay, 15 minute OFF delay

Low Pass Crossover: Continuously variable from 40-120Hz, 24dB/octave slope above 120Hz (non-THX mode)

Inputs: 2 Gold-plated RCA phono jacks

Outputs: 2 Gold-plated RCA phono jacks (unfiltered) / 2 Speakon® NL2 jacks

Phase: Continuously variable from 0 to 180 degrees

Dimensions: ( H ) 4.75" x ( W ) 17.5" x ( D ) 12.25"  

Weight: 27 lbs. 

Finish: Black anodized aluminum

Voltage: 110/120 VAC 60Hz E

Xport Voltage: 230 VAC 50/60Hz

Features: THX On/Off, Boundary Gain Compensation On/Off

Klipsch KA-1000 Amplifier Specification Sheet

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