OK so I have had 2 Kenwood KFC-W2505 10" subs running off a RF Punch P3001 amp for the past 3 years. Subs are 150W rms each and birth sheet for amp says it is 383 @ 2ohms. So when I got these I bought a crappy cheap bandpass box that came with 2 subs in it already. Took those out and put the Kenwoods in. Sounded alright but not great. So after joining this forum and reading how much importance is put on having the right box for your subs I decided to take the plunge and build my own box. So I designed a dual chamber 1cu' sealed box 3/4" mdf with double front baffle and recessed mounted subs. So 2 weeks ago took the Kenwoods out of the bandpass box to get them ready to go in the new one. Wanted to still have some bass so figured what the hell put the original 10's back in and use them until the enw box is ready. To tell you the truth could not hear a big difference between them. So now I have the same subs and amp running in a sealed box made to specks and I CANNOT BELIEVE THE DIFFERENCE. I swear I have new subs and amp as they do not sound the same anymore. I was afraid with a sealed box I would miss the low end I got with the bandpass but so far I am LOVING THIS BOX. If you think it won't make a difference trust me it is night and day over what I had.


'97 Cavi 2dr, Kenwood HU, Power Acoustic EQ/ xover, PA 3 farad cap,
JL audio 6.5" Comps, Memphis 16-MC3004 FS amp
2x Kenwood 10" subs, RF P3001 sub amp,
4ga power and ground.

A bandpass box will kick ass if it's tuned properly... but an off the shelf "crappy cheap" box will suck no matter what.

the box has MORE to do with how a sub does then the sub itself. cheap subs in the perfect box can sound as good or better then the best subs in the wrong box. the box is everything.


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hey guys, just want to ask something...so how does the subs sounds like when it is set up against the trunk wall or on the floor?? i am looking into some trunk set up and damn they look nice, specially for car shows, but I'm wondering how do they perform, sound quality wise? were they setup just for the looks??? example is this pic:

best thing to do is just build a small box, throw it in the car and angle it and move it around and see if you lose sound. usually in most cars putting them back towards the corners has a good effect.


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In what you posted above each sub has its own box, sealed, the ones that are inverted simply use the air the same way but are mounted inside out.