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The JL Audio 450/4v2 is a class A/B four-channel amplifier based on an Absolute Symmetry Class A/B circuit.

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The JL Audio 450/4v2 is a class A/B four-channel amplifier based on an Absolute Symmetry Class A/B circuit that utilizes discrete control circuitry and feedback loop designs for great power and dampening. An upgrade from the four-channel 300/4v2, the 450/4v2 offers increased wattage (150w per channel versus 75w) and more channel bridging options. Whereas the 300/4v2 offers only four-channel or two-channel bridging, the Audio 450/4v2 includes channel 1&2 stereo, channel 1&2 bridged, channel 3&4 stereo, and channel 3&4 bridged. The Audio 450/4v2, however, maintains the 300/4v2’s 5Hz-30kHz frequency, as well as its >200 @ 4 ohms dampening factor. The JL Audio 450/4v2 is priced at a rather expensive $849.99, although some retailers do offer it at just $529.99.

Features
  • Rated Power Channels 1&2 stereo mode: 150 W RMS x 2 @ 1.5 ohm – 4 ohm (11 – 14.5V)
  • Rated Power Channels 1&2 bridged mode: 300 W RMS x 1 @ 3 ohm – 8 ohm (11 – 14.5V)
  • Rated Power Channels 3&4 stereo mode: 75 W RMS x 2 @ 1.5 ohm – 4 ohm (11 – 14.5V)
  • Rated Power Channels 3&4 bridged mode: 150 W RMS x 1 @ 3 ohm – 8 ohm (11 – 14.5V)
  • THD at Rated Power (All Channels):
  • S/N Ratio (All Channels): >108.5 dB below rated power (A-weighted, 20 Hz - 20 kHz noise bandwidth)
  • Frequency Response (All Channels): 5 Hz - 30 kHz (+0, -1dB)
  • Damping Factor (All Channels): >200 @ 4 ohm / 50 Hz
  • Slew Rate (All Channels): ±25 V / µS @ 4 ohm per ch.
  • Left to Right Channel Separation: >75 dB @ 1 kHz
  • Input Range: Switchable from 200mV-2V RMS to 800mV-8V RMS
  • Dimensions: 19.70 in. x 9.25 in. x 2.36 in.
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