The head unit is a Sony dsx-a415bt. The power and ground is 6 guage with a proper fuse. No clue if ofc or cca but it was in a wiring kit for subs. I dont remember the dimensions off the top of my head but it has a 2 inch circular hole on one side and a slit along the bottom. Nothing else interally, a wooden box with a couple holes in it. My neighbor said it should be good enough. The sub is the link you sent with the dual 4ohm vc. The box may not be up to spec now that i think about it but again i believe the wiring is just fine.
Well, to start with
#1- That amplifier is only 4ohm stable bridged so you cannot go below that ohm value Bridged mono.
#2- The sub is DVC4 ohm and can be wired with both coils at a final Ohm load of either 2 ohm(of which that amp is not capable of handling) or 8 ohm which it can be wired to to work fine.
www.the12volt.com
Its not a great combination. If you have wired @ a 2 ohm load, you will end up frying the sub and frying the amplifier at some point. To use that amp.. You can wire to the 8 ohm load for both coils on the sub and it will work just fine. There is another option with what you have, and Ive done this in more than several occasions.
you can wire one coil up as a single voice coil 4 ohm load and use that amplifier in 4 ohm bridged/mono, But... The sub will only be able to handle 1/2 of the RMS value running as an SVC4 ohm sub= if the sub is rated for 400 watts rms @2 ohms half of that would be= 200 watts rms @4oms and wired as a single 4 ohm sub
www.the12volt.com
Ive had to do this when I blew a coil on a sub when one coil read fine and the other did not and worked just fine to have some bass, and the sub still works today as a SVC sub @ 1/2 of the rms value. You will have the ability to run that sub @ a 4 ohm value in an SVC wiring configuration to use that amp you have. I would recommend at least a 1.8 sealed enclosure for that sub, or at a min. of 1.6 ported and tuned to approx 34-36 htz. Ported will take less power to get the sub moving. Sealed enclosure takes a bit more power.
Another way is to locate a 2 ohm stable Mono amplifier and wire the DVC4 ohm sub to a final load of 2 ohms as pictured above.
One of the most reliable amps even used is an Alpine MRP M-500, that can be found on
ebay cheap if you look around that will do just fine off that 6ga of which I believe to be CCA wire and not OFC wire. Even this amplifier would work great for you, and you may be able to search for a cheaper one with a feedback on the seller of 100%
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