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Discussion Starter · #1 ·
HI Guys!

I Have a 2006 crewcab le with the rockford fosgate system, about three months ago i got rid of the stock head unit and replaced it with Kenwood's DNX7100, kept the stock amp and stock speakers, then i added two jl 10W3V3 single coil 2 OHM, a Jl 500/1 amp and i got a box from tech(really nice by the way). but i think the sound from the stock amp is higher than the one from the subs(gain knob is all the way up), so i'm looking for something that will let me lower the sound thats going from the HU to the stock amp.

I did a little research and i found something from scosche it's an oem amp interface, model # is aoe4

has anyone had the same problem?
any help will be more than great


OHH! and one more thing, has anyone used the new kit from schosche nn1453b, i have the metra kit and it sucks!!

Thank You!!
 

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So I'd assume that you are running the sub off of the 7100 by using the RCA's out of the back right? You might have a level adjust that will allow you to turn that up or down. Also gains all the way up on an amp are a big NO NO!! If you have to do that then you have a problem.

If you want to be able to "turn down" the volume and try and level out the system you could buy one of these. VARIABLE 4-CHANNEL HI-QUALITY AFTERMARKET DECK TO OEM SYSTEM ADAPTORS N-684V

From this web page.

http://www.autosound2000.com/adaptor_products.htm

This will allow you to level match your system.

Or you could just buy a decent 4 ch amp and some new speakers or at the very least new speakers and just run new wires from you 7100 direct to the speakers and power them off the head unit and bypass the factory amp all together.
 

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By all means, bypass the stock amp and use the speaker outputs of the new HU to drive the speakers - you will have more available power to the speakers and it will sound better.
I would suggest using a crossover network to 'combine' the front door speakers and the dash tweeters. Don't bother with the center dash speaker, its not worth the effort to power it.
I replaced the Rockford HU in my 06 LE with a Blaupunkt HU that I have used for a number of years. I use the stock front speakers and dash tweeters fed through crossover networks and I have 6x9 speakers in the rear mounted in enclosures. All is powered with the HU, I do not use the rear door speakers.

I used the Metra dash kit and it works fine for me.
 

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Discussion Starter · #4 ·
eakes said:
By all means, bypass the stock amp and use the speaker outputs of the new HU to drive the speakers - you will have more available power to the speakers and it will sound better.
I would suggest using a crossover network to 'combine' the front door speakers and the dash tweeters. Don't bother with the center dash speaker, its not worth the effort to power it.
I replaced the Rockford HU in my 06 LE with a Blaupunkt HU that I have used for a number of years. I use the stock front speakers and dash tweeters fed through crossover networks and I have 6x9 speakers in the rear mounted in enclosures. All is powered with the HU, I do not use the rear door speakers.

I used the Metra dash kit and it works fine for me.

Thanks guys,
but i have a question about bypassing the stock amp, aren't the stock speaker 2 ohms, isn't the recommended impedence for the hu either 4 or 8.

and this may sound dumb but how do i apply the usage of a crossover network, and what about the sub that's under the drivers side
 

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Relative to the new sub/amp you installed, the stock sub under the drivers seat can be ignored - don't bother trying to hook it up.

Yes, the stock speakers are 2 ohms. Yes, technically one should not connect a 4 ohm amp to a 2 ohm speaker. Practically, the power levels are so low it won't make a difference. I have been running my Blaupunkt for over three years into Nissan 2 ohm speakers and it's still working. The worst thing that could happen is, if you run the HU at realll high volume levels, you may blow the Nissan speakers.

In a stock configuration the door speakers and dash tweeters have separate lines from the Nissan amp. To get both sets of speakers to work you could wire them in parallel, however, it is better to use a crossover network (common to amp out, high pass to tweeters and low pass to door speakers). I got the ones I use at RadioShack, but you can find them at most any place that stocks auto audio products.
 
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