After seeing Nick7's build his enclosure
My sub/speaker install
it gave me the idea for mine.
i decided to go for some decent components for the install,
12" JL12W3D2 sub by jl audio (300W RMS 2ohm dual coil)
and a 2 channel Rockford fosgate amp which gave 120W RMS per channel (its old but its still better than most on the market)
they are quite expensive but its well worth the extra money!
i used a converter to get the signal to the amp taken from the rear speakers (which Ive replaced with some JBL coaxials)
the subwoofer requires at least liters in a sealed enclosure but Ive designed it with 54 liters with more than enough room for the amp. unfortunately the sub required 7 inches of depth so sticks out the floor buy about an inch.
i built the box with 18mm Mdf, cut to 3 different sizes so was quite easy to cut up
and i sealed it together with some sealing adhesive and screws.
in the boot
with the amp lid removed
the amp close up
i cut in a fan which is a fan with an adjustable speed so its not too noisy and keeps the amp cool.
to connect the sub to the amp i used some M6 bolts with washers securing the cables. this ensured the box would be a complete seal.
i got the carpet from a local audio fitters. its quite a good match in real life, but seems to come out a bit more in the picture. the carpet really made the box look like it came in the car.
once powered up it sounded
absolutly awsome. Ive never heard soo much bass from one 12" sub! i haven't managed to find a suitable setting yet as i need to go somewhere away from civilization for some fine tuning. it really shakes your bones!!!!!!!!
overall it was reasonably easy. it took me 2 days to run all the cables and build the box, which i think is a reasonable time.
I'm buying a grill for when i have anything in the boot.
my next steps are to
1. amplify the rear speakers
2. replace the front speakers with some components and amplify them also