About the JL Audio J2 320.4
JL Audio's J2 amplifiers will electrify you with strong performance at an affordable price, as these high-powered amps transform your system with their superb sound quality. Oversized output transistors, extra-quiet input circuitry, and high-tech power supplies deliver strong, stable output and reliable performance. These amps are overbuilt and underrated, so you'll get the maximum clean power you'd expect from JL Audio.
The J2 320.4 4-channel amp delivers 60 watts RMS per channel to your front and rear speakers, or you can send 160 watts RMS to a sub while sending 60 watts to each of your front speakers. Into bass? Switch this versatile amp to 2-channel mode, and drive two subs with 160 watts each. You can use the frequency filters and bass boost to tune your amp's sound to match your speaker system perfectly.
Product highlights:
- 4-channel car amplifier
- 60 watts RMS x 4 at 4 ohms (80 watts RMS x 4 at 2 ohms)
- 160 watts RMS x 2 at 4 ohms
- Class B amplifier design
- MOSFET switching power supply
- frequency response: 10-25K Hz
- variable low-pass filter (40-150 Hz, 12 dB/octave)
- variable high-pass filter (60-1.2K Hz, 12 dB/octave)
- variable bass boost (0-12 dB at 45 Hz)
- preamp inputs and outputs
- speaker-level inputs
- fuse rating: 30A x 2
- 4-gauge power and ground leads and a 60-amp fuse recommended — wiring and hardware not included with amplifier
- 15-13/16"W x 2-3/16"H x 9-5/8"D
- warranty: 1 year
- MFR # 99390
What's in the box:
JL Audio J2 320.4 owner's manual
- 4-Channel full-range amplifier
- Four 30 amp ATO fuses (2 installed)
- 2mm Allen wrench
- 3mm Allen wrench
- Two 10" Speaker input harnesses
- Four 3/4" Self-tapping screws
- 4 Flat washers
- Owner's manual
Customer reviews for JL Audio J2 320.4
Loading...
Loading reviews...
Average review:
5.0 out of 5 starsThanks for submitting your review
Customer photos
This review was collected as part of a promotion
Pros:
Cons:
More details on the JL Audio J2 320.4
Features & specs
| Performance | ||
|---|---|---|
| RMS Power Output (Watts x Channels) |
60 x 4 | |
| Peak Power Output (Watts x Channels) | N/A | |
| Power at 2 Ohms (Watts x Channels) | 80 x 4 | |
| Power at 1 Ohm (Watts x Channels) | --- | |
| Bridged Power (Watts x Channels) | 160 x 2 | |
| Minimum Impedance Bridged | 4 | |
| Minimum Impedance Unbridged | 2 | |
| Minimum Impedance | 2 | |
| Best Frequency Response | 10-25k Hz | |
| THD at Rated RMS Power | 1% | |
| Signal to Noise Ratio | N/A | |
| Input Voltage | 14.4v | |
| Features | ||
| Amplifier Class | B | |
| Low-Pass Crossover Frequency | 40-150 Hz | |
| Low-Pass Slope (dB/octave) | 12 dB/oct | |
| High-Pass Crossover Frequency | 60-1.2 kHz | |
| High-Pass Slope (dB/octave) | 12 dB/oct | |
| Bass Boost | 0-12 dB | |
| Bass Boost Frequency | 45 Hz | |
| Fan Cooled | No | |
| Fuse Rating | 30 x 2 | |
| Speaker Level Inputs | --- | |
| Preamp Outputs | 1 pair | |
| Width (inches) | 15-13/16 | |
| Height (inches) | 2-3/16 | |
| Depth (inches) | 9-11/16 | |
| Parts Warranty | 1 Year | |
| Labor Warranty | 1 Year | |
Product Research
Features
Design: The JL Audio J2 320.4 is 4-channel class B amplifier rated at 60 watts RMS x 4 into a 4Ω load and 80 watts RMS x 4 into a 2Ω load. When bridged the output is 160 watts RMS x 2 into a 4Ω load and 120 watts RMS x 2 into an 8Ω load.
Status LEDs: There are two LEDs on the left side of the amplifier:
- Power: green LED indicates the amplifier is turned on and operating normally
- Protect: red LED indicates the amplifier has exceeded its safe operating temperature, detected a short in a speaker output, or the speaker impedance is too low
Controls
Active Crossover: The front and rear sections of the amp have individual crossovers. Each can be set to high-pass, low-pass, or off (full range). The crossover points are also individually adjustable; each high-pass is continuously variable from 60 Hz to 1.2 kHz and each low-pass is continuously variable from 40 Hz to 150 Hz. The slope of both crossovers is 12 dB/octave.
Bass Boost: The front and rear sections of the amp also have separate bass boost circuits. Each is adjustable from 0 to +12 dB; the boost frequency is fixed at 45 Hz.
Connections
Power and Ground: The Power and Ground connections accept 4 gauge wire, which JL Audio recommends as the minimum size. The set-screw terminals are tightened/loosened using the included 3mm Allen wrench.
Remote Turn-On: The remote terminal will accept 10 to 18 gauge wire. The set-screw terminal is tightened/loosened using the included 2mm Allen wrench.
Speaker Outputs: The speakers' set-screw terminals will accept 8 to 16 gauge speaker wire; they are tightened/loosened using the included 2mm Allen wrench.
Preamp Inputs: The amplifier features two sets of RCA line level inputs. The input sensitivity is adjustable from 200mV to 4V RMS.
Speaker Inputs: When connecting the amp to a head unit without line level outputs, use the included speaker level input harnesses. In this case the input sensitivity is adjustable from 2V to 10V RMS.
Preamp Outputs: There is a pair of preamp outputs so you can send audio to another amplifier in your system. The preamp output is not affected by the crossover or bass boost circuits.
Loading...
Loading accessories...
Customer Q&A
Loading...
Loading articles...
