Earthquake’s proprietary interlocking design adds to the unique flexibility of the XJ-300ST, allowing users to attach two amplifiers together, resulting in a 4-channel amplifier using only 1U of rack space. The XJ-300ST can also be mounted on the wall or inside the cabinet by fastening the short mounting ears to the pre-assigned holes on the side of the amplifier.
With endless configuration scenarios, the XJ-300ST amplifiers can be used as mono (bridged) amplifiers, 2.1-channel amplifiers, 2-channel amplifiers, 4/8/12, and 16-channel amplification with industry-leading power density and efficiency. All the installer or avid user needs to begin any size installation is a given number of XJ-300ST amplifiers. No need to buy a cumbersome mix of different amplifiers to achieve a certain number of channels or power levels. Besides the simplicity, this is an inventory dream for any installer.
Need a subwoofer amp? grab 1 x XJ-300ST. Need a 4-channel amp? grab 2 x XJ-300ST. Need to wire a complete 7.1 system with very large front speakers? Grab 5 x XJ-300ST. Bridge one for each LCR and use the remaining two for the 4 rear channels. All this uses only 3U of rack space!
Upwards of 90 percent efficiency, the XJ-300ST stereo amplifier is cool-running and can be placed in a tight rack with components on all sides. This is an amazing achievement at only 1U rack high and half a rack in width. The XJ-300ST produces continuous rock-solid power of 110W RMS at 8-Ohm per channel and 320W RMS bridged into 8-Ohm.
This massive power capability is possible due to the advanced nature of the patented Class J output stage. The switching frequency of the output and the amplitude of the power supply is modulated in real-time based on the frequency and amplitude content of the input. No other amp can match the efficiency and power of Earthquake’s Class J technology.
Features
- Class J stereo modular design provides cool running power
- Its compact and unimposing size makes it an installer’s go-to amplifier
- Numerous application possibilities with customizable channel setup
- Allows for MONO bridged, 2-channel, and 2.1-channel wiring configuration
- Versatility allows for multi-channel audio systems
- Proprietary Interlocking Design
- Used for joining two XJ-300STs for side-by-side rack mounting
- 1U rack space tall with half-rack width chassis
- Signal sensing toggle switch with +12V trigger input
- Selective variable crossover
- Bypass/lowpass toggle switch
- Turns crossover on or off
- 0–180° phase adjustment
- 110V/220V AC selector
- RCA inputs
- Volume control
- 4 detachable short rack ears included
- Used for both rack and wall mounting
- Back bracket included
- Links multiple XJ-300ST amplifiers
- Optional RM-300FR long ear extension brackets available
- Technology Integrator’s 2016 Impact! Awards Finalist
Specifications
- Output Power:
- 2 x 110W RMS @ 8-Ohm
- 2 x 170W RMS @ 4-Ohm
- 170W RMS @ 8-Ohm Mono Bridged
- 300W RMS @ 4-Ohm Mono Bridged
- Frequency response: 20Hz–20kHz
- Input Impedance: 10 kOhm
- Impedance: 4–8 Ohm
- Crossover Frequency: 50Hz–160Hz
- SNR: > 97 dB
- Damping Factor: > 400
- THD: < 0.08%
In The Box
- (1) XJ-300ST Stereo Class J Amplifier
- (4) Short Mounting Ears
- Mounting screws included
- (1) Back Bracket
- Mounting screws included
- (4) Rubber Feet
- (1) Power Cord
Dimensions
-
- H x W x D: 1.87″ (47.49mm) x 8.5″ (215.90mm) x 8″ (203.20mm)
- Weight: 3.74 lb (1.7 kg)