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JL Audio J2 320.4 (J2320.4)

320W RMS, J2 Series Full-Range 4-Channel Amplifier

4.5

(2 reviews)

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The product on this page is discontinued.
  • J2 Series 4-Channel Class B Car Amplifier
  • RMS Power Rating:
    • 4 ohms: 60 watts x 4 chan.
    • 2 ohms: 80 watts x 4 chan.
    • Bridged, 4 ohms: 160 watts x 2 chan.
  • MOSFET Power supply
  • Linear bi-polar design
  • Power and protection LED indicators
  • Bass Boost 0-12 dB at 45 Hz
  • High-level and low-level inputs
  • 2/4 Channel input switch
  • Preamp RCA outputs
  • Silver-plated RCA level inputs
  • Silver-plated screw terminals
  • Input sensitivity can be used to match the unit's output voltage to the input stage of each amplifier channel
  • Outer casing is designed to remove heat from the circuitry
  • High-pass filter (60-1200 Hz)
  • Low-pass filter (40-150 Hz)
  • Frequency response: 10-25,000 Hz
  • Dimensions: 15.4"L x 9.6"W x 2.15H
  • 4-gauge power and ground wiring is required for installation. Contact us for information regarding a discount on select amplifier kits when purchased together with this amplifier.
  • 1-year Sonic Electronix warranty
Power Specifications - Full Range Channels
RMS Power @ 4 ohms60 watts x 4 channels
RMS Power @ 2 ohms80 watts x 4 channels
RMS Power @ 1 ohmN/A
Bridged RMS Power160 watts x 2 channels
Peak Power OutputN/A
Amplifier Specifications
Amplifier ClassB
Number of Channels4
Total Peak Power OutputN/A
Total RMS Power Output320 watts
Maximum Input Gauge Size4 AWG
Minimum Impedance Unbridged2 ohms
Minimum Impedance Bridged4 ohms
THD at Rated RMS PowerN/A
Speaker Level InputsYes
Preamp OutputsN/A
Built-in CrossoverLow-pass (LP)
High-pass (HP)
High-Pass Crossover Frequency60 - 1200 Hz
Low-Pass Crossover Frequency40 - 150 Hz
Subsonic FilterN/A
Signal-to-Noise RatioN/A
Channel SeparationN/A
Bass Boost0 - 12 dB
Bass/Gain RemoteNo
Fan CooledNo
Fuse Rating30A x 2 
CEA-2006 CompliantNo
Warranty and Return Policy
Return Policy Standard Return Policy
Parts Warranty Duration1 year
Labor Warranty Duration1 year
Warranty ProviderSonic Electronix
Customer Review Summary for JL Audio J2 320.4 (J2320.4)
Average Customer Rating is 4.5 out of 5 stars:
4.5
based on 2 Reviews
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Rating Distribution:
5 star:
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50%
4 star:
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3 star:
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what's this?
Average Attributes Rating:
Durability
4.5
Value
5.0
Features
5.0
Design
5.0
Usability
5.0
what's this?
Most Helpful Customer Reviews:
July 6, 2010 Good low end JL
Review by
jeff from Saugus, CA
Overall
Durability
Value
Features
Design
Usability
I have always liked JL but the price of there equipment is not cheap, so when i saw this amp's price I was thrilled. As a plus it had almost all the same features in the high end JL's in this amp for such a low price
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February 10, 2010 JL J2.320.4.kickazz
Review by
Cody C. from Bend, Oregon
Overall
Durability
Value
Features
Design
Usability
I bought this amp to power my whole system as a temporary option until I get a mono-block for my subs. Currently I am running 1 MTX 10 4ohm SVC in a sealed box , and a pair of eclipse 6 1/4 components in the front , I have the amp at half gain on the fronts and half on the sub , the sub would not handle any more, getting full Xmax out of my poor MTX 10 and the fronts are deafening, the sound quality is very very good, I have a hard time believing this is 160 watts on my sub.. its flexin hard. I would almost consider running a pair of 10s off this amp... in addition to my fronts, its that powerful. If you are in need of a 4ch amp , look no further you will not be disappointed... JL has never let me down. And at this price , you absolutely can not go wrong..
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Amplifier Wiring Kits
Get the wires you need to properly install and power your car amp.
 ProductPriceAdd?
Monster Cable BAP300Monster Cable BAP300
8 Gauge Amplifier Installation Power Kit (No RCA Interconnects)
$40.00
Kicker DCK8Kicker DCK8
8 Gauge Amplifier Installation Kit with RCA Interconnect Cable
$47.99
Bass Remote Control
Control the volume level of your bass and amplifier from the front of the vehicle.
 ProductPriceAdd?
Universal Remote Level Bass ControlUniversal Remote Level Bass Control
Controls bass level and frequency via RCA/Interconnect connectors on any amp.
$14.99
Small Universal Remote Level Bass ControlSmall Universal Remote Level Bass Control
The Scosche RLC is a smaller universal bass remote that connects via RCA inputs.
$12.99
Speaker Wire
Improve the sound quality by delivering more power when replacing your factory wiring. High quality speaker will maximize your amplifier investment and system performance.
 ProductPriceAdd?
Kicker XW1220 Speaker WireKicker XW1220 Speaker Wire
12 Gauge Wire - 20 ft. of Dual Twist Speaker Cable with Sleeves for a Clean Install
$24.99
StreetWires SCP1215BL - 12 AWG Speaker WireStreetWires SCP1215BL - 12 AWG Speaker Wire
12 Gauge Wire - 15 ft. of Speaker Cable with Twisted Construction
$19.99
RCA Interconnects
You will need a good set of RCA interconnect cables to connect your amplifier to your head unit. Using high quality cables ensure the best sound possible by reducing unwanted noise interference, providing tight contacts, and utilizing the latest in cable technology.
 ProductPriceAdd?
Kicker 4-Channel RCA Audio Interconnect CableKicker 4-Channel RCA Audio Interconnect Cable
4 Meters (13 ft.) 4-Channel RCA Audio Interconnect Cable with Dual Twisted-Pair, Hyper-Flex Technology
$21.99
Kicker Z-Series RCA Interconnect CableKicker Z-Series RCA Interconnect Cable
19 ft. of 4-Channel RCA cable with dual twisted-pair conductors, hyper-flex technology, and gold plated contacts for maximum signal transfer!
$24.99
StreetWires ZN7 RCA Interconnect CableStreetWires ZN7 RCA Interconnect Cable
16.4 ft. of 4-Channel RCA Cable with hyper twist construction, oxygen free copper, and precision machined tips.
$49.99
Capacitors
Capacitors store energy for the amplifier to use on demand, thereby assisting in the elimination of dimming lights during peak power surges during use.
 ProductPriceAdd?
Raptor C1F ** SPECIAL PRICE **Raptor C1F ** SPECIAL PRICE **
True 1.0 Farad Car Audio Capacitor for up to 1000W Max
$31.99
e2 ECAP1 by Scosche - Mid-Level 1 Farade2 ECAP1 by Scosche - Mid-Level 1 Farad
Digital 1.0 Farad Car Audio Capacitor for up to 1000W Max
$43.99
Rockford Fosgate RFC1D - Top of the Line 1 FaradRockford Fosgate RFC1D - Top of the Line 1 Farad
Digital 1.0 Farad Car Audio Capacitor for up to 1000W Max
$104.99
Installation, Tools & Accessories
With our professional install card, you can have your amp installed by a pro near you, or you can purchase tools and do the install yourself.
 ProductPriceAdd?
StreetWires FB8StreetWires FB8
8 Gauge Firewall Bushing
$4.99
Kicker DB1448 (09DB1448) - Top of the Line!Kicker DB1448 (09DB1448) - Top of the Line!
Distribution Block with Two 1/0 or 4 AWG Inputs and Four 4 or 8 AWG Outputs
$18.99
Professional Installation for your Car Power AmplifierProfessional Installation for your Car Power Amplifier
Covers labor charges through our professional installer network.
$89.99
Testing and Performance
Optimize your system's performance with testing tools such as SPL meters, bass test discs and more!
 ProductPriceAdd?
AutoSound 2000 CD-104AutoSound 2000 CD-104
The ultimate amplifier level setting disc used for evaluation of audio components
$12.99
AutoSound 2000 CD-102AutoSound 2000 CD-102
High Frequency Test CD specifically designed for the set-up and evaluation of sound system imaging and placement.
$12.99
AutoSound 2000 CD-103AutoSound 2000 CD-103
Audiophile reference series test disc for evaluation of all audio components.
$12.99

Product Summary

Manufacturer: JL Audio
Model number: J2-320.4
UPC: 699440993906
Weight: 12.00 lbs
Internal SKU: j23204
Internal product ID: 20626
X-Factor Dance Contest - over $2,800 in prizes.

Customer Testimonial

I was very pleased with the prompt reply I received regarding further info on a possible purchase. Thank you.

Elmer Borneman

- bones from Canada

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