I'm hoping someone can help me with a Monsoon system. I have an 05 Bonne GXP. The rear 6x9'* are used as sub-woofers only with the use of a bypass that allows only low frequencies directed to the rear deck. I'd like to disable/remove the bypass and install a new set of two or three way 6x9'* in the rear and use them as full frequency speakers. I can't handle a lot of bass and get headaches from all the booming, but I'm not sure what to do to remove the bypass in the amp. Any help in this matter would be greatly appreciated. Thanks

I think that the speakers are either crossed over at the amp or they are crosseover at the speaker itself. do you have any old speakers laying around that you could hook up to the factory wires to see if your high frequencies are cut off?

I've already tried that and the 3 way'* I connected only gave me the same full bass with no mid'* or high'*. I was told that there'* something in the amp that limits the frequencies to lows to the 6x9 in the rear deck. I also though about switching/re-directing the wires so that the lows are coming out of the smaller rear door speakers and replace the rear deck speakers to provide the full range sound. What I'm trying to do is get more sound from the rear of the vehicle since the front door speakers over power the rear and adjusting the fade only cuts down sound quality. This system doesn't compair to the Bose I had in my 03 Seville STS. That system kicked butt and didn't blow me away with booming bass. Any other suggestions are greatly appreciated.

The are crossed over in the amp. To make 3-way speakers act the proper way you have to bypass the amp.

Is there a way of removing the cross over in the amp to allow full range and still get the advantages of the higher watts it produces. If I eliminate the amp, I'll probably get a whopping 4 watts out fo the rear speakers. I tried to research the Monsoon web site but that proved fruitless as well.

Okay According to my wiring diagram FULL range sound comes out to the amp (which is located under "right side of rear package shelf".... so basically sounds like the rear deck)

you can switch the 6x9'* from the sub outputs to the Amplified L/R Rear Speaker Outputs but I suppose thats only going to work if it has full range and not just mids...

or

go straight from the Radios Rear Full Range Outputs to the new 6x9'*, wont be as loud but still full range.

Majority of the time GM radios are the same internally, cars with amplifiers obviously just amplify that signal. only thing special about them usually is the Monsoon icon., and for ex. a non-amplified Bonneville could have a factory Monsoon if you get a hold of an amp and do all the wiring yourself... (usually not practical considering how easy a 4-ch is, and would have more power)

I have bypassed the amp in my car. The headunit pushes all the speakers. Sounds fine.

Thanks to all that have provided information. I'll mess around with it and try to get the rear deck speakers to be full range by changing them out and making some modifications. I'm sure if I was 16, all this booming bass would be great, but the music I listen to needs more full range and not just boom, boom, boom. Thanks again for all your input. I'll drop another reply once I get things changed around.

you could just turn down the bass. if you make them full range the 6X9'* will still put out bass. In a monsoon system the controls on the head unit there are "bass-mid-high" the bass controls the factory subs. If all you hear is BOOM then your amp is screwed

Well, I tried to find the amp under the rear deck and can't find anything but the compass module and the speakers themselves. Is the amp behind the rear seat? Mouse...when you bypassed your amp, did you just install jumper wires between the speaker inputs to the amp and the outputs to the speakers. I really wish GM had offered a Bose system in this car instead of this Mon-Sucks. El Camino Man, I've got the bass down to "0" and realize I could go -6 if I needed, but that makes the rest of the speakers sound like tin cans.