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JBL Club 704

4-channel car amplifier — 70 watts RMS x 4

Item # 109CL704

Although this futuristic JBL looks like it belongs in the cockpit of a stealth bomber, the Club 704 4-channel...

Although this futuristic JBL looks like it belongs in the cockpit of a stealth bomber, the Club 704 4-channel...

California customers:
Please click here for your Proposition 65 warning.

Enrique
Need help?
Contact our Virginia-based experts.
Discontinued item
2 questions - 4 answers

Item # 109CL704

Enrique
Need help?
Contact our Virginia-based experts.

About the JBL Club 704

Space-age power

Although this futuristic JBL looks like it belongs in the cockpit of a stealth bomber, the Club 704 4-channel amplifier will actually deliver 70 watts RMS to each of the front and rear speakers in your car. You can also bridge the amp to 2-channel mode to drive a couple subs with 200 watts RMS. You'll always have a spot in your system for this versatile powerhouse.

Space-age power

Although this futuristic JBL looks like it belongs in the cockpit of a stealth bomber, the Club 704 4-channel amplifier will actually deliver 70 watts RMS to each of the front and rear speakers in your car. You can also bridge the amp to 2-channel mode to drive a couple subs with 200 watts RMS. You'll always have a spot in your system for this versatile powerhouse.

Specialized high-tech integration features

And speaking of the future, this amp features an ADAS input, which lets you keep your advanced driver assistance system's (ADAS) warning messages after you've replaced the factory receiver or amplifier. You can select which channel plays your messages, so you'll hear lane departure or blind spot warnings, for example, through your system loud and clear. And if your vehicle comes equipped with a Harman HALOsonic noise cancellation/enhancement system, you can plug it right into the Club 704 and enjoy a super quiet (or an engine-roaring) ride along with your music.

Works in almost any vehicle

Speaker-level inputs allow this amplifier to integrate into almost any system, even one using your car's factory radio. Separate high- and low-pass filters on the front and rear channels tune the sound to perfectly fit your speakers or subs.

JBL Club 704

Club 704 inputs and controls

READ LESS

Product highlights:

  • 4-channel car amplifier
  • 70 watts RMS x 4 at 4 ohms (100 watts RMS x 4 at 2 ohms)
  • 200 watts RMS x 2 at 4 ohms in bridged mode (4-ohm stable in bridged mode)
  • Class D amp technology
  • variable high- and low-pass filters (32-320 Hz, 12 dB/octave) on front and rear channels
  • preamp and speaker-level inputs
  • preamp outputs
  • ADAS and HALOsonic inputs for advanced integration in select vehicles
  • fuse rating: 30A x 2
  • 8-gauge power and ground leads recommended — wiring and hardware not included with amplifier
  • 14-3/4"W x 2-3/8"H x 7-7/16"D
  • warranty: 1 year
  • Our 60-day money-back guarantee
  • MFR # Club 704

What's in the box:

  • 4-Channel amplifier
  • Four 30A ATO fuses (2 installed)
  • 4 Bare wire-to-RCA adapters
  • 4 Mounting screws (M4 x 53mm)
  • Quick-connect Guide
  • 2 JBL stickers

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JBL Club 704 reviews

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Features

Overview: The JBL Club-704 is part of the Club series of car audio amplifiers. This Class D 4-channel amplifier will accept both high-level and low-level inputs. Class D amplifiers are highly efficient and compact, generating lots of power without drawing much current or generating heat. The unit comes with spare fuses, speaker wire-to-RCA adapters, and mounting hardware.

Power Output: The Club-704 delivers the following power output:

  • 70 watts RMS x 4 at 4 ohms (<1.0% THD+N)
  • 100 watts RMS x 4 at 2 ohms (<1.0% THD+N)
  • 200 watts RMS x 2 at 4 ohms bridged (<1.0% THD+N)
  • 1000 watts x 1 peak

HALOsonic Compatible: JBL Club full range amplifiers are compatible with the Harman HALOsonic noise management system found in select vehicles. HALOsonic utilizes a combination of Active Noise Cancellation and Electronic Sound Synthesis to greatly reduce engine noise and road noise in the cabin, making for a much quieter ride. The amp features a 3.5mm connection to interface with the HALOsonic system.

ADAS: The Club-704 has an RJ45 port for the Advanced Driver Assistance System (ADAS) that can override the audio source input to deliver a message or other audio from a connected ADAS accessory. On the amplifier, you can designate which speaker the ADAS signal is output: Front left, front right, rear left, or rear right.

Protection Circuitry: The amplifier features protection circuitry for thermal overload, over- or under-voltage (<9V or >16V), and short circuits. The LED on the top of the amp glows red if the amp goes into protection mode.

Controls: The Club-704's controls are located on one side of the amplifier. The rotary controls require a small screwdriver (not included) to make adjustments. The amp controls include:

  • Gain: The rotary gain controls let you match the amp's input sensitivity to the output of the source unit. There are separate gain controls for the front and rear channels.
  • Input Level: The Input Level switch lets you select the type of input you are using. For high-level input, there are two settings: Hi1 and Hi2. If the audio system fails to play with an amplifier connected to its output, or you get a "speaker disconnected" message on your factory stereo, set the switch to the Hi2 position. The Hi2 position includes a circuit design to fool this type of factory system into "seeing" a speaker connected to its output.
  • Crossover: The amp features switchable crossovers that can be set to low pass (LPF), high pass (HPF), or Full Range. You can adjust the cutoff frequency of the crossover from 32Hz to 320Hz using the rotary control. There are separate crossovers for the front and rear channels.

Connections: The JBL Club-704 uses set screw terminals for the +12V power, ground, turn-on (remote) lead, and speaker outputs. The screws can be tightened/loosened with a Phillips-head or flat-head screwdriver (not provided). The amp connections include:

  • Power/Ground: The +12V Power and Ground terminals will accept up to 4-gauge wire. It is recommended that you use a minimum of 8 AWG power wire to the battery, with an in-line 60A fuse installed no more than 18" from the battery terminal. An 8 AWG ground wire (minimum) is also recommended, and attached to a metal area close to the amplifier.
  • Remote Turn-On: The Remote terminal will accept up to 8 AWG wire. Typically, an 18 AWG turn-on lead is included in an amplifier wiring kit.
  • Speaker Outputs: The amp features screw terminals for connecting four speakers. There are markings on the terminals for bridging the amplifier.
  • Speaker-Level Input: The amp includes four bare wire-to-RCA adapters for connecting the amp to a factory radio or aftermarket head unit without preamp outputs. You should attach each speaker wire from the head unit to an adapter and plug the adapter's RCA plug into the amp.
  • Line-Level Inputs: The amplifier is equipped with two pairs of RCA inputs for connecting stereo RCA patch cables from the head unit to the amp.
  • Pre-Out: A third pair of RCA jacks is provided to output the audio signal to a second amplifier, if desired.

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Customer Q&A

Q
Crutchfield asked: Why did you buy this?
A
good rating and reasonable pricing and a good discount. [ Joseph  Dec 11, 2018 ]
A
wanted llouder sound [ sally  Dec 09, 2018 ]
A
Recommended by salesperson Aaron based on my needs. [ Martin  Mar 24, 2018 ]
A
jbl quality low distortion very low it will play clean and hit hard [ WILLIAM  Dec 15, 2017 ]
A
Zac recommend and I aggreed [ joah  Dec 12, 2017 ]
A
David the specialist told me it would be perfect for my use [ Alec  Nov 24, 2017 ]
A
crutchfield rep reccomendation [ Patrick  Nov 16, 2017 ]
A
I have 2sets of new jbl component speakers in my 4runner , can't wait to hear how they sound with real power.I have 45 watts on them now .Really want to hear the potential. [ Dennis  Mar 20, 2017 ]
A
Past JBL performance and reliability. [ Dennis  Feb 09, 2017 ]
A
Can't go wrong with JBL!!! [ Christopher "CR  Dec 13, 2016 ]
A
JBL ! excellence. [ JAMES  Nov 25, 2016 ]
A
I have been a JBL fan for a long time. The design caught my eye and I know they build quality products. [ Marcus  Nov 04, 2016 ]
A
JBL quality, and the Crutchfield very competitive pricing, made this an easy choice, and the shipping is free which is a nice bonus. Very excited to match this amplifier to my recent JBL Club 5000 speakers I purchased. [ Alfred  Oct 17, 2016 ]
A
I bought all JBL speakers for my truck, I liked this amp for the price and it looks kinda cool. [ John  Oct 06, 2016 ]
SHOW MORESHOW LESS

2 questions already asked

Q
What is the class of this Amp technology? I don't see any in the spec's sheet.
[ Joseph  Dec 09, 2018 ]
2 answers
A
The class of the amp is D. It's located on the main page https://www.crutchfield.com/p_109CL704/JBL-Club-704.html Also take a look at jbl home page for the specs
[ Joseph  Dec 19, 2018 ]
A
This Amp is Class D technology.
[ Lawrence  Dec 19, 2018 ]
Q
can you use 4 gauge wire with the jbl club-704 amplifier?
[ Josh222  Apr 19, 2018 ]
2 answers
A
The terminals are not truly designed for 4 gauge. You can do it just on a trimmed down level. The amp doesn't pull a lot of amps so that gauge is just a bonus to use for it.
[ Marcus  Apr 20, 2018 ]
A
Yes
[ MATT  Apr 20, 2018 ]

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