****Adding an amp and box to a Bose System.****

I have an 01 Maxima and i have had an amp and box installed. My original set was okay. I just got my friends box which was [extremely] loud ... in his car. It's no where near loud...barely audible in fact...    [mod edit: language]

 

 Is it more than likely that the genius who installed it originally spliced in before the amp and that is why my signal is so weak? Since it is a Bose they had to pull the signal off of my rear speaker and then run it through an adjustable crossover and then to my amp. Hope i was clear in what said. Thanks a lot. Any help would be great.

There could be several reasons for the lackluster performance from your aftermarket subwoofer installation. Unlike "traditional" Bose factory systems, the 2001 Nissan Maxima has a factory amplifier, located under the rear deck, that powers all six speakers and sends a signal to an amplified subwoofer that is also in the trunk. If the installer tapped off the factory leads between the amp and the sub, you would not be getting the amplified signal you would need into the aftermarket crossover/amplifier.

If the installer tapped into the rear speakers, even after the factory amplifier, these channels could already be crossed over (high pass) and would not supply the deeper bass frequencies you would need.

Like most Bose systems, the actual specifications on wattage and frequency are hard to come by. I would recommend opening the factory sub enclosure to see if you can tap a signal lead after the sub amplifier to get the proper powered frequencies to connect to your aftermarket crossover/amplifier. This could prove difficult because the factory subwoofer is amplified within the enclosure, so finding the proper place to tap your leads may be a trial and error situation.

I hope that helps.

Anyone else have a good recommendation?