JL Amp

[Bimmer328I]

I got a 4 channel 300 JL audio amp. I only need it to run my 2 JL subs, and for some reason its really not pushing the subs. I got it bridged but for some reason it seems it dont have enough power. to push the subs. How could this be . wouldnt 300 be enough. I can hear them working and moving, but they jsut arent what i thought. I had a 350 zapco and this thing smashed. Maybe the amp is wired wrong. ANy ideas.. Ill take a pictures of the setup if that helps. Anyone know any ideas..?

[DJTrevLuv]

The JL 300/4 is not a subwoofer amplifer. It's used for powering your interior speakers.

If you wanted a sub amp you should have gotten a 250/1, 500/1 or 1000/1.


Check JL's web site for wiring diagrams www.jlaudio.com

Hope that helps.

Trev

[Bimmer328I]

OK so, this wont work huh... I guess i gotta get a 2 channel .

Thanks

[mydumpthatch]

well, you can bridge it so that it should put about 150 to each channel or see if its possible to bridge it to one channel to a 1 ohm load and rewire the subs to a 1 ohm load and put 300 to the bridge. depending on what kinda subs you have, you want to match the rms power with maybe a little more wattage. also, try playing with the settings in the head unit.

[DJTrevLuv]

Actually you can't wire a JL amp to 1 ohm, it will go into fault mode. JL amps are made to put out full power, in this case (75x4 or 150x2) @4, 3, or 2 ohms. This amplifer is used to power interoir speakers.

From JL's web site:

R.I.P.S. System™

R.I.P.S. stands for "Regulated, Intelligent Power Supply" and is a central feature of JL Audio's “Slash” series amplifiers. The remarkable R.I.P.S. System™ ensures consistent power delivery over a wide range of battery voltages and load impedances.

"Regulated" means that the power supply adjusts its operation so as to maintain the amplifier's rated power output over a wide range of vehicle voltages (11V-14.5 V). Conventional, unregulated power supplies result in significant power losses as battery voltage decreases. With a JL Audio “Slash” series amplifier, the power output remains consistent in real-world systems, resulting in superior fidelity and stability.

The "Intelligent" portion of the R.I.P.S. System is a circuit that actually monitors output current to optimize the amplifier's output power over a wide range of load impedances (1.5 ohm-4 ohm per channel). Conventional amplifiers are designed to produce optimum power at a particular impedance (2 ohm, for example). When asked to run above that impedance (say, 4 ohm), these amplifiers lose power (half their power from 2 ohm to 4 ohm). This will not happen with a JL Audio “Slash” series amplifier because the R.I.P.S. System detects the actual impedance being driven and adjusts output rail voltages to deliver optimum output. The entire process is seamless, automatic, and results in incredible dynamics for satellite channels and consistent power output for a wide range of subwoofer configurations. It also takes into account the real impedance of the system, rather than relying on often inaccurate assumptions based on a speaker's "nominal impedance".

The bottom line of the R.I.P.S. system is: Optimum power, at any impedance between 1.5 ohm and 4 ohm per channel, at any vehicle voltage between 11V and 14.5V.


Trev

[mydumpthatch]

well then just get a fosgate and drop the impedance down to .5 and you'll have pretty much enough power to anything youre gonna be running