Description JL Audio G-Series amplifiers are all about real value...
the kind that is not only judged on price, but rather by the quality, power and performance you get for
your money.
Like the flagship HD and “Slash v2” amplifiers, G-Series amplifiers feature differential-balanced inputs,
excellent signal processing sections, our unique “never quit” rollback protection circuit, and our super-
clean, patented amplifier circuits. The only major difference is that G-Series amplifiers employ a
conventional unregulated power supply, instead of the R.I.P.S. power supply employed by HD and
“Slash v2” models.
Patented Absolute Symmetry™ A/B Circuitry
(U.S. Patent #6,294,959)
The full-range models employ this patented technology which reduces distortion and improves power
symmetry.
Active Crossover Features
Fully variable 12dB/octave filters with detented filter frequency selection controls offer excellent tuning
flexibility.
Bass Control Features
Bass boost circuits are included on all models and can be operated with or without a remote bass
controller.
Advanced Rollback Protection
Borrowing a page from the “Slash” amplifiers’ bag of tricks, the G-Series amplifiers employ advanced
thermal and low-impedance protection to virtually eliminate annoying amplifier shut-down events.
Patented Class D Circuitry
(U.S. Patent #6,441,685)
The subwoofer amplifiers feature a patented Class D circuit for outstanding efficiency, stability and
fidelity.
Differential-Balanced Inputs
Greatly reduce noise and provide compatibility with a wide range of sources, including most OEM
systems.
Product Specifications
G4500
G4500 Class A/B Four-Channel System Amplifier Features:
Description: Class A/B Four-Channel System Amplifier
Patented Technology: Absolute Symmetry™ Class A/B Circuit (U.S. Patent #6,294,959)
Differential-Balanced Input Topology: For superior noise immunity, RCA jack inputs
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
Bass EQ (Channels 3&4 only): +6 dB fixed frequency, fixed 'Q' (defeatable) with port for optional remote bass control (RBC-1)
Speaker output connections: Accept up to 8 AWG wire
+12V and Ground connections: Accept up to 4 AWG wire
G4500 Class A/B Four-Channel System Amplifier Specifications:
Rated Power 14.4 V Stereo: 80 W RMS x 4 @ 4 ohm - 125 W RMS x 4 @ 2 ohm
Rated Power 14.4 V Bridged: 160 W RMS x 2 @ 8 ohm - 250 W RMS x 2 @ 4 ohm
Rated Power 12.5 V Stereo: 60 W RMS x 4 @ 4 ohm - 90 W RMS x 4 @ 2 ohm
Rated Power 12.5 V Bridged: 120 W RMS x 2 @ 8 ohm - 180 W RMS x 2 @ 4 ohm
THD at Rated Power: <1% THD, 20 Hz - 20 kHz
S/N Ratio: >104 dB referred to rated power (A-weighted, 20 Hz – 20 kHz noise bandwidth)
Dimensions (L x W x H): 13.80 in. x 9.25 in. x 2.50 in. - 350 mm x 235 mm x 63.5 mm
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