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Discussion Starter #1
I'm replacing the entire sound system on my 2004 G35 coupe (Kenwood HU, Alpine 6-1/2" component fronts, Alpine 6x9 back and Alpine 10" sub). I was just trying to figure out if I'm gonna need spacers for the the front speakers. Here are the dimensions:

Alpine SPR-60C

Tweeter Mounting Diameter (mm): 37.9mm
Tweeter Mounting Diameter (in): 1-1/2''
Tweeter Mounting Depth (mm): 19 mm
Tweeter Mounting Depth (in): 3/4''
Woofer Diameter (mm): 165mm
Woofer Diameter (in): 6-1/2''
Woofer Mounting Diameter (mm): 136mm
Woofer Mounting Diameter (in): 5-3/8''
Woofer Mounting Depth (mm): 59mm
Woofer Mounting Depth (in): 2-3/8''
Crossover Size (mm): 63mm x 32mm x 24mm
Crossover Size (in): 2-1/2'' x 1-1/4'' x 15/16''

Excuse my ignorance but it's my first time doing this and just want to make sure I have everything needed before I start taking everything apart. Any help or info would be appreciated.

Super Duper Moderator
53,488 Posts
You should get spacers in the front doors to space the speaker out to the back side of the door panel. The spacers aren't needed to clear the window.

You can remove the stock tweeter in the sail panel and using the stock bracket, you can mount the new tweeter in the OEM position.

What amp(s) are you going to use for your system and what will they be powering?
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