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I have just finished installing my sub and amp to my9n. Once it was wired up I turned on the head unit and...BOOM! Theres the base, a shedload of it!!

To try and solve this i turned down the subwoofer settings on my headunit, despite doing this the bass is still over powering my new component speakers. Will i need more speakers to overcome this or is there something im doing wrong?!

Ummm, mine was ok in the last car, what are the specs of both the sub/amp and the components?

SPECIFICATIONS

AMP

Power Output: 97 Watts RMS x 2 channels at 4 ohms and ≤ 1% THD + N
145 Watts RMS x 2 channels at 2 ohms, 14.4V supply and ≤ 1% THD + N
290 Watts RMS x 1 channel at 4 ohms, 14.4V supply and ≤ 1% THD + N
Signal-to-Noise Ratio Signal-to-noise ratio: 82dBA (reference 1 watt into 4 ohms)

Dynamic Power: 190 watts at 2 ohms

Effective damping factor: 6.39 at 4 ohms

Frequency Response: 10Hz – 90kHz (–3dB)

Maximum input signal: 5.5V

Maximum sensitivity: 230mV

Output regulation: 0.098dB at 4 ohms
12dB Built-in, variable, low-pass electronic crossover
One pair full-range preamp outputs
Separate high-level and low-level inputs

SPECIFICATIONS

SUB

RMS Power Handling: 300W

Peak Power: 1200W

Frequency Response: 23Hz - 400Hz

Sensitivity: 93dB

Impedance: 4 Ohms/1 Ohm

Cut-Out Diameter: 285mm (11-3/16")

Mounting Depth: 129mm (5-1/16")

Overall Diameter: 316mm (12-7/16")

SPEAKERS

17cm Type-S component speakers

Peak Power 250W

RMS Power 50W

Frequency Response: 35Hz - 30kHz

Spoke Design Grill System

Multi Layered Cone

Wave Guide

Linear Drive MagnetTM

1" soft Dome Tweeter With Installation Kit

External Crossover With Tweeter Protection

Lightweight Air-Injected Rubber Edge

Neodymium Tweeter Magnet

Custom Fit Spacer

Nomex Spider


The sub and amp are JBL and the speakers are Alpine

The sub will either be 4ohms or 2ohms mate not 4 and 1.

With that kind of power you should be fine, I was running a 600w RMS sub with 400w RMS and I could stil hear my comps over my su, and that was with the fade set more to the rear!
Have you tried altering the settings for the speakers?

I just copied all of that from the JBL site so

It just seems to be really loud! All I get is sh!t loads of bass, my nodding dogs head popped off!

When i increase the volume of the headunit to try and get more out of my speakers the base just over powers it to a point whre the amp cuts it off.....

That may be your problem then, it sound as though the settings on your amp are too high, the amp will turn off because it cant cope with the load on it, which may mean the gains are too high.

Also, how have you got it wired?

Ive got the power cable up the left hand side of the car, phono cables up the right(middle) and the remote up the left(middle) all proper

Whould that make a difference then?

That shouldn't matter, you're not supposed to run the power and RCA cables next to each other, that interferes with the signal, but like I say, it saounds as though your gains are too high on the actual amp if it goes into protection when you turn it up.

Right-e-oh I'll have a fiddle with the dials tomorrow, cheers mate.

Oh and one more thing, did 400 RMS not shake your car to pieces?!
Mines 300 and my boot rattels when you hear it from the outside.

Didn't rattle the boot, watch this though to see what it done

http://www.realmofexcursion.com/videos/ ... se12.5.wmv

thats crazy! And nothing ratteled on the exterior of your car?! (minus the phone!)

Do you know any way of stopping this?

Sound deadning would, although it CAN get expensive, the only thing that rattled on mine was the passenger door.

OK, sound deadning, is that like the carpet stuff??