speaker adapter plate

[scarborough]

installing 6x9 speaker in 87 cutlass, has anyone used the adapter plate from mike monte Carlo in your cutlass to convert 4x10 to 6x9. are made your own adapter
Part # DM03100

 

[565bbchevy]

I always just cut a notch just below the rear deck and mount the 6 x 9 directly to the underneath of the rear deck, the notch is hidden by the rear seat.
I also open up the hole to match the 6 x 9.
This way gives you clearance if you have bars going under your speakers.

 

[axisg]

what he said. The adaptors tend to angle the speaker into the trunk rod. If you notch out the seatback you can put 6x9's and a couple 6" round speakers in there without interfereing with the trunk rod

 

[g0thiac]

I always just cut a notch just below the rear deck and mount the 6 x 9 directly to the underneath of the rear deck, the notch is hidden by the rear seat.
I also open up the hole to match the 6 x 9.
This way gives you clearance if you have bars going under your speakers.

View attachment 171884

So just take a grinder and basically make room for it? I probably don't need step by step instructions, but it would be nice to see the process.

 

[Texas82GP]

If you want a pair of adapters, you can have mine. Just pay the shipping. I went with 6.5's in the rear seat side panels.

 

[565bbchevy]

So just take a grinder and basically make room for it? I probably don't need step by step instructions, but it would be nice to see the process.

I don't have any pictures from the rear seat area but the notch you need to cut is usually about 3/4"-1" deep and around 5"-6" long and you cut just below the rear deck.
You cut the notch based on the thickness of your 6 x 9, I did mine so the speaker slides into the notch and I only need 2 screws to secure it.

 

[g0thiac]

I don't have any pictures from the rear seat area but the notch you need to cut is usually about 3/4"-1" deep and around 5"-6" long and you cut just below the rear deck.
You cut the notch based on the thickness of your 6 x 9, I did mine so the speaker slides into the notch and I only need 2 screws to secure it.

Thanks. I suppose it would help to have the new speakers first, to help estimate how much cutting is required.

 

[565bbchevy]

Thanks. I suppose it would help to have the new speakers first, to help estimate how much cutting is required.

You are better off cutting the notch on the small side first then trim as needed to get the speaker to sit flush with the deck and depending on the speaker style you might have to trim for tweeter and midrange clearance if they are higher than the mounting surface but I do this any way and open up the whole area above the 6 x 9 since the factory opening is designed for the 4 x 10.

 

[303'505rollin]

I haven't looked in a minute but does the speaker hole have a bar across the middle? Gotta cut that out too?

 

[Texas82GP]

I haven't looked in a minute but does the speaker hole have a bar across the middle? Gotta cut that out too?

Mine didnt.