Anyone who has owned a 4th gen F-body knows that the stock Monsoon 6.75 dual voice coil speakers in the rear sail panels suck. I've thought about upgrading these speakers for some time and I finally did it. I looked around trying to see if others have modified the stock location 6 inch subs to an 8 inch. There is not a whole lot of information on this. I know I'm not the only person who has attempted this, but not alot if people have shown others how to do it. I thought I'd add something new and show off my work.
First off about 10 years ago I added about 17 full sheets of Dynamat to sound proof my car. It added about 30 pounds, so it's not that big of a deal.
I chose 2 Pioneer TS-Sw2002D2-8 sub woofers.
Pioneer TS-SW2002d2 8" 600W Shallow Subwoofer with Dual 2" Voice Coils - Walmart.com
or here if you have more money than brains.
Pioneer TS-SW2002D2 Shallow-mount 8" subwoofer with dual 2-ohm voice coils at Crutchfield.com
I removed the plastic sail panels and removed the speakers. I used the included trim template and made a plywood template.
Next using this template I placed it where I wanted the speaker to be located. So after I traced the template on to the Dynmat let the cutting begin.
I just used a Dremel cut off wheel to cut everything out, then I used a grinding stone to smooth out the razor sharp edges. Inside the fender well I had to trim about 1/2" away from the existing hole, just for clearance issues. I then put some more Dynamat everywhere I could get it.
Then covered that hole with even more Dynamat.
To transfer the 6 mounting screw locations I used the template I made.
There is a good sized gap were the edge closest to the door is. I used Dynamat , again, to build up layers so the speaker sits flat. once done I just used a box knife to trim the extra away making it look nice.
After the gap was filled and my 6 holes were drilled I decided to use machine screws instead of the included screws that come in the box. I just pushed the screw in from the backside of the hole and used a nut to lock the screw into place. I felt that the sheet metal was so thin that a self taping screw would not grab and hold tight. After placing the speaker in I used some nylock nuts to secure it. I cut the studs sticking out sot the sail panel would fit again without rubbing.
So to finish everything up I placed the sail panel back into place and it was nice to see that nothing from the outside was out of the ordinary.
So the only other thing I noticed was that the new speaker hit the panel when the volume was cranked up. Not pictured, but to fix this I had some high density foam insulation laying around and placed it between the speaker holed flange and the panel. I used some double sided tape to keep that shim in place. That worked out perfectly.
This modification took me about 12 hours of cutting and drilling and making adjustments, but it was totally worth it. The sound quality is so much better.
First off about 10 years ago I added about 17 full sheets of Dynamat to sound proof my car. It added about 30 pounds, so it's not that big of a deal.
I chose 2 Pioneer TS-Sw2002D2-8 sub woofers.
Pioneer TS-SW2002d2 8" 600W Shallow Subwoofer with Dual 2" Voice Coils - Walmart.com
or here if you have more money than brains.
Pioneer TS-SW2002D2 Shallow-mount 8" subwoofer with dual 2-ohm voice coils at Crutchfield.com
I removed the plastic sail panels and removed the speakers. I used the included trim template and made a plywood template.
Next using this template I placed it where I wanted the speaker to be located. So after I traced the template on to the Dynmat let the cutting begin.
I just used a Dremel cut off wheel to cut everything out, then I used a grinding stone to smooth out the razor sharp edges. Inside the fender well I had to trim about 1/2" away from the existing hole, just for clearance issues. I then put some more Dynamat everywhere I could get it.
Then covered that hole with even more Dynamat.
To transfer the 6 mounting screw locations I used the template I made.
There is a good sized gap were the edge closest to the door is. I used Dynamat , again, to build up layers so the speaker sits flat. once done I just used a box knife to trim the extra away making it look nice.
After the gap was filled and my 6 holes were drilled I decided to use machine screws instead of the included screws that come in the box. I just pushed the screw in from the backside of the hole and used a nut to lock the screw into place. I felt that the sheet metal was so thin that a self taping screw would not grab and hold tight. After placing the speaker in I used some nylock nuts to secure it. I cut the studs sticking out sot the sail panel would fit again without rubbing.
So to finish everything up I placed the sail panel back into place and it was nice to see that nothing from the outside was out of the ordinary.
So the only other thing I noticed was that the new speaker hit the panel when the volume was cranked up. Not pictured, but to fix this I had some high density foam insulation laying around and placed it between the speaker holed flange and the panel. I used some double sided tape to keep that shim in place. That worked out perfectly.
This modification took me about 12 hours of cutting and drilling and making adjustments, but it was totally worth it. The sound quality is so much better.
nice setup.
I have no patience or skill for audio stuff, but I sometimes wish I did.
