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JL Audio full-range amplifiers benefit from an exciting new technology: Absolute Symmetry™. This patented Class AB output stage
delivers amazing fidelity with extremely low distortion over a wide range of load impedances.
Until now, the accepted approach for building high-fidelity Class AB amplifiers has been to utilize "Complementary" output stages,
which use different types of transistors to "push" the speaker and "pull' the speaker. The problem with this approach is that true
"mirror-image" transistors are impossible to create, leading to asymmetrical clipping behavior.
Another approach is to use the same type of transistor for both push and pull but without buffering from the load impedance.
This solves the problem of asymmetrical clipping, but leads to huge increases in distortion as load impedance drops (making
this design less desirable than the "complementary" approach.)
JL Audio amplifiers solve the entire issue once and for all with a revolutionary Class AB circuit that employs identical
type transistors for push and pull with true buffering from the load impedance. Our design achieves absolute power symmetry
and extremely low distortion over a wide range of load impedances. It is the most significant breakthrough in Class AB
circuit design in quite some time and it is patented by JL Audio.
Owner's Manual (239k)
Key Features
Absolute Symmetry™ Class AB Circuit
(U.S. Patent #6,294,959)
Differential, Noise-Cancelling Input Topology:
RCA jack inputs (low-level) and multi-pin jack (high-level)
On-board Crossover:
State-variable, 12dB/octave Butterworth with continuously variable cutoff frequency selection from 50 – 200 Hz. Configurable as Low-Pass or High-Pass
Preamp Output:
Pass-through type.
Speaker output connections:
Accept up to 8 AWG wire
+12V and Ground connections:
Accept up to 4 AWG wire
Specifications
Rated Power (mono):
120 W RMS x 1 @ 4 ohm (12.5V);
200 W RMS x 1 @ 2 ohm (12.5V)
THD at Rated Power:
<0.08% @ 4 ohm (20 Hz -20 kHz)
S/N Ratio:
>104 dB referred to rated power (A-weighted, 20 Hz – 20 kHz noise bandwidth)
Frequency Response:
10 Hz – 25 kHz (+0, -1dB)
Damping Factor:
>200 @ 4 ohm / 50 Hz,
>100 @ 2 ohm / 50 Hz
Slew Rate:
± 22V/µs
Input Range:
200mV – 8V RMS
Dimensions:
9.8" x 9.25" x 2.36"
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