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Originally Posted by sammy sandbag
For those who haven't read my first attempt, you can find it here: Custom Sub Box Project I wasn't satisfied with the sound of my two old RF 8"s in a ported box, so I decided to try again. This time I bought an Infinity 10" with a recommended rms power rating of 250w. I planned on powering it with my old RF 250w punch amp. Unfortunately (or perhaps fortunately) this amp died on me. So I made another trip to Circuit City and picked up an Infinty amp with 283w rms. The sub required .75 cu ft of airspace for sealed enclosure, which made it a bit difficult to fit it under the rear seat. It also had a 5.5" mounting depth, which made it an even tighter squeeze.
Result: The system sounds much much better. The 10" can produce much lower frequencies than the 2 8"s and hits much harder with more power in the sealed box. It's able to really handle the heavy bass in rap and techno, but sounds excellent when listening to rock. I spent a fair amount of time tweaking the gain, bass boost, and crossover, and I think I got it where I want it. It doesn't over power the rest of the freqs, but is still felt. These pictures should help you visualize the rest:
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Sammy--Does that whole box only have a volume of 0.75 cu ft? I know it is the internal volume that counts, but it looks a lot bigger. Also is there any benefit of downfiring subs versus upward firing?