Thread: Would this component system work for the rear speakers?

No.

The rear decks are 6x9 style speakers. I wouldn't put those 5 1/2's in the doors although they could made to work, I'd get 6 1/2's.

There are no crossovers in the rear deck speakers. The XOver in built into the amp under the back shelf, and there are 4 wires that go to each 6x9 unit. Highs for the tweeters, lows to the 6x9 "subwoofer". What comes out of the head unit is standard non-amplified front and rear line level outputs. Nothing that comes out of the Amp is really usable. The frequencies are split up in a non-standard way... Sub,Rears. Mid bass, doors. Tweets front and back. The dash center speaker seems to get mostly Mid-range.

Point being, is that you can use a standard 6x9 speaker for a replacement, but you would have to rewire them, bypassing any crossovers and connecting all 4 wires for each side, 2 +/- to the bottom, and 2 +/- to the tweets. Don't get lazy and tie the High/Subs' grounds together, or leave them together on the lugs of the new speakers. Amp Damage.

A better option may be to add an amp and standard 6x9's, stealing the rear inputs to the Monsoon.

BTW, the remote turn on wire is Purple going into the Monsoon. YW.

I left the Monsoon amp in mine. I replaced to stock center dash speaker with a single Infinity 3.5" I had, and the chimes etc still work very well. I tapped into the line levels running to the amp to drive 3 other amps. Front, Rear, Sub, and threw in my JBL stuff and a single DVC 12'.

Originally Posted by SaukRapids

1 & 2 seem contradictory.

Monsoon does not have a "turn-on" wire. The stock amp responds to the audio signal, using that to switch on/off.

Well, golly. Wrong.


Pin #6 of connector C3 that goes into the amp is listed as "radio on". Listed as pink for Saturn Sky's and Hummers with Monsoon, is found as Purple in Grand Prix's. My own testing found the 0 volts on the wire with the radio off, and 12 volts with the radio on. The same wire is used to turn on the Sat. antenna in the roof. The same wire that is currently turning the amplifiers on and off in my trunk.

If you look at the Full Service Manual for '06-'08 Pontiac Grand Prix's, in the electrical section, you can verify this for yourself. As I did. You can even download the FSM as a .PDF from right here on GPForums. Like I did. That way you know you have good information on what you are doing, so you can get 'er done right, and then share that info with other people. Like I did. Not just shoot my loud mouth off in forums. Like you did.

SO. Yeah. The purple wire going to the Monsoon amp under the deck is the remote turn on wire.

Originally Posted by SaukRapids

Get f*cked. Hows that for shooting my mouth off?

I pointed out discrepancies and incomplete information, and you jump my sh*t with childishness? Hope that GXP blows the trans, f*ckface.





Monsoon does not have a "turn-on" wire. The stock amp responds to the audio signal, using that to switch on/off.

Well, cupcake, you are still wrong.

There are none, that's why I said you would have to rewire them <a new standard speaker>. Sorry, I should have specified a 2-way coaxial 6x9.

Say a Coaxial 6x9 has 2 drivers, the small tweeter driver suspended in the middle over the main driver. The tweeter will have 2 wires that run down and are soldered to the lugs, just as the woofer driver has it's 2 wires, the braided loops, soldered to the lugs. On cheaper speakers, the tweeter usually has a small can-style electrolytic capacitor in line to filter out the lower frequencies, or pass the highers ones depending. A little nicer speakers add a wire coil, an Inductor, to the filtering, too.

Component speakers move those cans 'n' coils into a separate "crossover" box along with maybe a resistor or 2, a safety device, maybe a "brightness" switch, then give you a woofer and tweeter separately.

In any case, the Monsoon amp has it's own crossover<s> built in, and handles the frequency ranges differently, hence the 4 wires to each speaker.

To make a standard 2-way <coaxial> speaker work as a replacement, you would just have to desolder or cut the built-in tweeter wires, removing or just bypassing existing filters or crossovers <the little damned can>, and find a way to extend those wires to the tweeter outputs of the Monsoon amp. Hooking up the Bass or woofer driver is pretty easy as it is probably already soldered directly to the lugs, and you can just hook the subwoofer outputs directly to the normal lugs. So speaker surgery.

I've never tested it with an oscilloscope, but I believe that if you take the total output of the rear monsoon amp, it does not seem to be a full range of frequencies. It seems to be missing some midrange, which is handed off to the front speakers to reproduce. The rear is only the highs, and the lowest lows. This is why I said that nothing that come out of the Monsoon amp is "usable". It's not Standard.

Which is really no problem. Because.

The stock monsoon speakers are crap. Uncoated paper cones, cheap plastic and like 5 oz subwoofer magnets.. so any cheap $90+ set of 6x9's would be able to do the same job, probably better.

https://www.crutchfield.ca/p_777P69B....html?tp=73342

Those. Looking at the back view of that speaker, <the 2nd picture from the left>, the skinny black, and black/white stripe wires that come down off the magnet from under the sticker are the tweeter wires. Cut or desolder those from the lugs and extend them out, and secure them with a zip tie to the basket. Wire them direct to the amp tweeter outputs, black/white stripe is positive.

The tape wrapped looking thing glued on the side is the crossover/filter. An inductive coil. It is connected with 2 wires. Simply cut one of those wires to disable it. Or cut both of them and rip it off.

Since the woofer/bass driver wires are connected from the bottom of the lugs, and nothing else is left hooked up to them, Just hook the Amps subwoofer outputs there. Warning: on that speaker cutting the coil looks like it breaks the connection to the Woofer. So simply solder the wire to pad#2, or short pads 2 and 3 together. Or use the leg of the cutoff crossover as a wire