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Old 08-12-2019, 01:10 PM   #4 (permalink)
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Join Date: Jul 2016
Location: Iowa
Drives: 1992 3000GT VR4
midnightg35x is an unknown quantity at this point
Default Re: Rough Volume of Rear Speaker Enclosure?

Originally Posted by PhailosaurusRex View Post
Remove the enclose, seal the inside of the port and the mounting hole, fill it with water then measure the water. I haven't seen a volume published for it.

Personally I'd stick with a quality 6x9 due to the small volume (even before displacement) and lack of rigidity. There's also only 3" of mounting depth.
I was hoping to get a measurement before I ripped everything apart and then have to decide what to use with the panels apart, but your method will certainly work. If I do go that route, I'll report back on the volume. There certainly is a question about rigidity, but I will have to see what options I have there once I get in there. I know it is a small volume, but there are a good amount of small 6.5" subs out there that do not require much volume. Finding that actual mounting depth is a key parameter to limit my choices down. My ideal sub to put in there is a JL 6W3v3 as it only needs .15 ft^3 sealed, but the mounting depth is pretty deep at 4.25." Moving to something like the skar evl-65 drops the mouting depth to 3.5", but sealed box goes up to 0.25 ft^3. The shallowest option is the earthquake SWS 6.5X with 1.8125" mounting depth and 0.2-0.4 ft^3 sealed.

I like the dedicated sub instead of a 6x9 because I was going to completely remove the rear fill otherwise.

Originally Posted by jrhorne View Post
For the mounting depth, i recall from many years ago when i replaced the rear 6x9 speakers that i had to cut the port/tube that protrudes into the speaker enclosure because the magnet from the aftermarket speakers was much larger than stock (e.g., aftermarket speaker was "deeper"). This was a simple fix however - i just had to cut part of the plastic tube and the new speakers cleared without a problem
I think if the volume of the enclosure is small, I would have to remove the port all together. I doubt it has the volume to support a port of any kind as ported enclosures need more volume compared to their sealed counterparts. Cutting the port changes its characteristics also, so I again would probably just go sealed unless the volume and port characteristics happen to line up with a speaker I can find.

Thanks for the input!
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