New setup! 2 12" bandpass box? Just looking for some info.

[Darkstrike120]

So i just bought some used subs. JBL 1200.1 amp and 2 12" infinity perfects 12.1 in a bandpass box? the only thing im confused on is the ports are on the back chamber for the subs and they share a sealed compartment from the front firing side. I though bandpass boxes were suppose to be ported in the front? looks kinda like this

http://www.legacycaraudio.com/el/LBF107.jpg

My other issue is these subs are only rated for 350 watts each. However I am pushing over 600 to each sub. Is this ok? they look pretty beefy. Afraid of smoking them. Tried cranking it up but cant really hear any distortion, making it very hard to set the gain. I bought the whole setup off the guy so im not the one who set this up.

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[d77543020 10+ year member]

that box is garbage and those sub's won't work in them the best way to do it is to have a box made if you can't do that at least put them in a nice prefab ported box like atrend

 

[Darkstrike120]

Whats wrong with he box? I do have access to a sealed box with the correct volume that i made which housed my old subs. Im usually not a fan of ported enclosures.

This is the actual box i have. Found it on sonic electronix

Ground Shaker BPR 2 12-GRAY (bpr212-gray) 12" Dual Regular

Looks like all the same specs as the one i have. Guessing this is the one the guy bought

 

[Darkstrike120]

Whats wrong with the box? I do have access to a sealed box with the correct volume that i made which housed my old subs. Im usually not a fan of ported enclosures.

This is the actual box i have. Found it on sonic electronix

Ground Shaker BPR 2 12-GRAY (bpr212-gray) 12" Dual Regular

Looks like all the same specs as the one i have. Guessing this is the one the guy bought

 

[Darkstrike120]

And then just being curious what would kinda sub would work well in an enclosure like that?

 

[HondaSI 10+ year member]

Looks like a nice box.. has good reviews

 

[Darkstrike120]

Ok because I thought it was a pretty nice box. Slams pretty hard. Kinda miss my old sealed box cause it made all the bass tones very even in tearms of loudness.

 

[SounDrive Pro Seller]

Just say no to prefab.

 

[jrdnhsnbrg 10+ year member]

That box is garbage.

 

[yogegoy]

This is the actual box i have. Found it on sonic electronix

Ground Shaker BPR 2 12-GRAY (bpr212-gray) 12" Dual Regular

And they didn't even come with hardware jeeze "Please note: Hardware is not included to attach plexiglass to enclosure"

 

[hispls 5,000+ posts]

So i just bought some used subs. JBL 1200.1 amp and 2 12" infinity perfects 12.1 in a bandpass box? the only thing im confused on is the ports are on the back chamber for the subs and they share a sealed compartment from the front firing side. I though bandpass boxes were suppose to be ported in the front? looks kinda like thishttp://www.legacycaraudio.com/el/LBF107.jpg

My other issue is these subs are only rated for 350 watts each. However I am pushing over 600 to each sub. Is this ok? they look pretty beefy. Afraid of smoking them. Tried cranking it up but cant really hear any distortion, making it very hard to set the gain. I bought the whole setup off the guy so im not the one who set this up.

That box seems incredibly small for a pair of any kind of 12's. Most likely it'll sound pretty loud in a very narrow range of frequencies and everything you play will sound like the same note. This is typical results for buying a prefab box and just dropping whatever you have in there.

I'd suggest that Infinity makes a decent product that would be capable of sounding quite nice in the right application. It is likely that they'd sound much nicer just dropping them into whatever sealed box you have.

 

[Darkstrike120]

Yeah in like two weeks maybe ill try that out. Dont have a lot of time right now. it says each sub wants about 1cuft of airspace in a sealed box. my sealed box is exactly 2cuft internal volume. So should work perfectly. Maybe ill just plug the ports on the box i have for now to see how it sounds. There is exactly 1cuft of airspace that they would each have if i plugged the ports and took the plexi off.