90-96 C4 front speaker question
Pro
Joined: May 2007
Posts: 744
Likes: 0
From: WayTooCloseToNY Northeast PA
The depth measurement changes based on where you measure. Because the factory grille panel is slanted relative to the frame-rail behind it, the depth you have available will depend on the diameter of the magnet, the frame and how close to the bottom you can move the driver.
There's no simple answer, and trial/error is the only solution.
There's no simple answer, and trial/error is the only solution.
Thread Starter
Race Director
Joined: Mar 1999
Posts: 12,597
Likes: 237
From: Bartlett Illinois
The depth measurement changes based on where you measure. Because the factory grille panel is slanted relative to the frame-rail behind it, the depth you have available will depend on the diameter of the magnet, the frame and how close to the bottom you can move the driver.
There's no simple answer, and trial/error is the only solution.
There's no simple answer, and trial/error is the only solution.
Safety Car
Joined: Apr 2003
Posts: 3,793
Likes: 9
From: VA
I have 6010cs under my stock unmodified grilles. I had to trim the sill cover a little, and the sill cover is pushed out slightly from flush (not noticeable to anybody but me).
When I was fiddling with it before deciding what to buy, I tried the db675 out of another car and determined that db6750 would work under the stock covers if you trimmed the plastic part of the grille some. I didn't want to do that, so I went a little smaller.
Thread Starter
Race Director
Joined: Mar 1999
Posts: 12,597
Likes: 237
From: Bartlett Illinois
It is a function of both depth and magnet size. Surveying what people have used and checking the measurements of those is probably the best bet.
I have 6010cs under my stock unmodified grilles. I had to trim the sill cover a little, and the sill cover is pushed out slightly from flush (not noticeable to anybody but me).
When I was fiddling with it before deciding what to buy, I tried the db675 out of another car and determined that db6750 would work under the stock covers if you trimmed the plastic part of the grille some. I didn't want to do that, so I went a little smaller.
I have 6010cs under my stock unmodified grilles. I had to trim the sill cover a little, and the sill cover is pushed out slightly from flush (not noticeable to anybody but me).
When I was fiddling with it before deciding what to buy, I tried the db675 out of another car and determined that db6750 would work under the stock covers if you trimmed the plastic part of the grille some. I didn't want to do that, so I went a little smaller.
Pro
Joined: May 2007
Posts: 744
Likes: 0
From: WayTooCloseToNY Northeast PA
Well, I have no 94-96 panel experience. The 90 & 92 I did were both a huge PITA, so I can't imagine how hard it'll be to do the newer panels.
I realize there may be color-matching issues, but what about grabbing a set of used 90-93 panels from Contemporary or somewhere and working those instead? Then you can save the originals. Just a thought.
I realize there may be color-matching issues, but what about grabbing a set of used 90-93 panels from Contemporary or somewhere and working those instead? Then you can save the originals. Just a thought.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Thread Starter
Race Director
Joined: Mar 1999
Posts: 12,597
Likes: 237
From: Bartlett Illinois
Well, I have no 94-96 panel experience. The 90 & 92 I did were both a huge PITA, so I can't imagine how hard it'll be to do the newer panels.
I realize there may be color-matching issues, but what about grabbing a set of used 90-93 panels from Contemporary or somewhere and working those instead? Then you can save the originals. Just a thought.
I realize there may be color-matching issues, but what about grabbing a set of used 90-93 panels from Contemporary or somewhere and working those instead? Then you can save the originals. Just a thought.
I bought it that way
I have a chance to swap to the 90-93 syle, but I kind of Like the 94-96 panels and the storage bins in them
all I need is the panels perforated and then some sort of cap for the holes (like a grille cloth cover)
I know how I will mount the speakers, in my 89 they sounded good the way I had them mounted, then I have no real depth issues with the 4" and tweeter itn eh OEM location
Team Owner
Joined: Aug 2000
Posts: 40,156
Likes: 45
From: San Pedro CA
Jeff... I am so shocked... you haven't seen my 3-way install.
It's easier on the early door panels, cause they are multiple pieces. On the later ones, you will have to recover the entire panel.
This requires custom work to build up a mount... there isn't enough room back there. The space for the tweeter is very limited, too.
I made a speaker pod from MDF, some cardboard and fibreglass resin. That made a solid enough cylinder to support the speaker. I then hot-glued the cylinder into a hole I cut on the carpeted panel, leveled it and let it set.
After the glue set, I filled the area with spray foam, that created the base contour I wanted, which I filled over with Bondo. Sanded a bit and then covered. I have since redone the covering in black vinyl.
I want to get some Alcantara and try again...
It's easier on the early door panels, cause they are multiple pieces. On the later ones, you will have to recover the entire panel.
This requires custom work to build up a mount... there isn't enough room back there. The space for the tweeter is very limited, too.
I made a speaker pod from MDF, some cardboard and fibreglass resin. That made a solid enough cylinder to support the speaker. I then hot-glued the cylinder into a hole I cut on the carpeted panel, leveled it and let it set.
After the glue set, I filled the area with spray foam, that created the base contour I wanted, which I filled over with Bondo. Sanded a bit and then covered. I have since redone the covering in black vinyl.
I want to get some Alcantara and try again...
Thread Starter
Race Director
Joined: Mar 1999
Posts: 12,597
Likes: 237
From: Bartlett Illinois
Bogus,
I have seen it, but you have the Earlier panels.
When I had the 3 way in my 89, I had the Midbass in the door and the 4 and tweet int he frame rail in a custom enclosure.
now that the 89 is for sale, my 90 needs to get the 3-way system, if I had the 90 panels it would be a no brainer, but I have the 94-96 panels and as you said it would need to be recovered completely, or maybe capped oer where the sound will come through.
See in my 89 all I did was mount the speakers to the doors flat behind the panels, i just made openings covered with Grille cloth to get the sound through into the cabin, it sounded VERY good.
I plan on the same or hope for the same, depending on what I end up doing about the panels
I have seen it, but you have the Earlier panels.
When I had the 3 way in my 89, I had the Midbass in the door and the 4 and tweet int he frame rail in a custom enclosure.
now that the 89 is for sale, my 90 needs to get the 3-way system, if I had the 90 panels it would be a no brainer, but I have the 94-96 panels and as you said it would need to be recovered completely, or maybe capped oer where the sound will come through.
See in my 89 all I did was mount the speakers to the doors flat behind the panels, i just made openings covered with Grille cloth to get the sound through into the cabin, it sounded VERY good.
I plan on the same or hope for the same, depending on what I end up doing about the panels
Team Owner
Joined: Aug 2000
Posts: 40,156
Likes: 45
From: San Pedro CA
With the later panels, I would consider covering the entire panel... you won't fit a speaker in there, there just isn't enough room.
You might tho, fit something way back, as in, actually attached to the inner door skin, and yes, as you suggested, add a grill of some sort. For some reason, I feel you would loose sound... just not direct and entirely too muted.
I have a 96 panel in my garage... would you like it to experiment with?
You might tho, fit something way back, as in, actually attached to the inner door skin, and yes, as you suggested, add a grill of some sort. For some reason, I feel you would loose sound... just not direct and entirely too muted.
I have a 96 panel in my garage... would you like it to experiment with?
Thread Starter
Race Director
Joined: Mar 1999
Posts: 12,597
Likes: 237
From: Bartlett Illinois
With the later panels, I would consider covering the entire panel... you won't fit a speaker in there, there just isn't enough room.
You might tho, fit something way back, as in, actually attached to the inner door skin, and yes, as you suggested, add a grill of some sort. For some reason, I feel you would loose sound... just not direct and entirely too muted.
I have a 96 panel in my garage... would you like it to experiment with?
You might tho, fit something way back, as in, actually attached to the inner door skin, and yes, as you suggested, add a grill of some sort. For some reason, I feel you would loose sound... just not direct and entirely too muted.
I have a 96 panel in my garage... would you like it to experiment with?
Le Mans Master
Joined: Aug 2004
Posts: 5,141
Likes: 7
From: Metairie Louisiana
There's no simple answer, and trial/error is the only solution.
Thanks
Last edited by rickneworleansla; Nov 5, 2007 at 03:37 PM.
