muss Member 40 Member For: 16y 8m 11d Gender: Male Location: Townsville Posted 18/05/10 08:47 AM Share Posted 18/05/10 08:47 AM Hey just wondering if any one has ever heard of a "bam pass" sub enclosure set up its basically 2 subs facing each other in an enclosed box. heard about this through a mate and got curious to know whether it would be any good?? Link to comment Share on other sites More sharing options...
robbo k Member 414 Member For: 16y 9m 11d Location: Wollongong Posted 18/05/10 09:19 AM Share Posted 18/05/10 09:19 AM band pass u mean. yes just means its a ported/vented box. subs dont have to face each other. its just how some are made. try some website like crutchfield. explains all types of boxes etc. Link to comment Share on other sites More sharing options...
Panda Eyes flame magnet Gold Donating Members 5,674 Member For: 16y 8m 2d Gender: Male Location: adelaide hills- 'race air' central Posted 18/05/10 09:20 AM Share Posted 18/05/10 09:20 AM the term you are refering to is 'band pass'.try using that term in your google search Link to comment Share on other sites More sharing options...
nang3 12" member Donating Members 2,107 Member For: 19y 6m 25d Location: Perth WA Posted 18/05/10 10:36 PM Share Posted 18/05/10 10:36 PM LOL at 'BAM' !! yeh mate there are heaps of enclosure types, each with their own positives and negatives...I've had about 6 different sub setups in cars over the years, 5 of them were sealed and one was ported.The sealed definitely had more impact, went deeper and was more accurate but the ported moved more air and would sound louder overall but not as deep... hard to explain the sound difference.a for a bandpass box, I would only bother with one if you were entering SPL comps, they have to be pretty precise and only sound good within a narrow bandwidth range..if you can afford good subs and a good amp then I reckon go for a sealed box and just throw as much power as possible at it.. Link to comment Share on other sites More sharing options...
muss Member 40 Member For: 16y 8m 11d Gender: Male Location: Townsville Posted 19/05/10 06:20 AM Author Share Posted 19/05/10 06:20 AM haha sweet guys, thanks. I did have a 12inch kicker L7 solo-baric sub in a factory ported box powered by the kicker mono block amp to suit it 700 WRMS?? or something near there. I didnt think it had a sharp enough punch for me like you said nang more noise and less accuracy. could of been bad tuning aswell on my part though haha. looks like a sealed box it is then Link to comment Share on other sites More sharing options...
robbo k Member 414 Member For: 16y 9m 11d Location: Wollongong Posted 19/05/10 11:52 AM Share Posted 19/05/10 11:52 AM if u want more noise. build a sealed box and make it big... Link to comment Share on other sites More sharing options...
nang3 12" member Donating Members 2,107 Member For: 19y 6m 25d Location: Perth WA Posted 19/05/10 11:04 PM Share Posted 19/05/10 11:04 PM .. and throw moaarr power at it !! Link to comment Share on other sites More sharing options...
smicky Go Pies!!! Donating Members 2,852 Member For: 16y 11m 1d Gender: Male Location: Vic Somewhere - Sometimes NSW Posted 20/05/10 01:06 PM Share Posted 20/05/10 01:06 PM yep - its one of those ones that goes... bam bam... they were from the sik convertible Fred drove each day to and from the rock quary... Then Barney names his som - Bam Bam... Makes the bass feel like its bashing you with a wooden bat! Link to comment Share on other sites More sharing options...
kodaz Member 28 Member For: 16y 1m 12d Gender: Male Location: Brisbane Posted 16/06/10 06:54 AM Share Posted 16/06/10 06:54 AM Basically a band pass box come in two varieties, 4th order and 6th order. The orders refer to the slope of fall off either side of the tuning frequencies. but both are a box divided into two compartments with the sub firing into the other.A 4th order bandpass box has a sealed sub compartment with a front comparment on it that is vented. Normally the vents are large enough to be able to see a sub but normal round ports can also be used.A 6th order bandpass box has a vented sub compartment and vented front compartment.Bandpass boxes are chosen when you need to tune the response or maximise the output over a chosen frequency range. Generally they are more effcient than a sealed or vented box so produce more bass for a given input. It's the same princaple you would use when firing a sub into a corneer of the boot to maximise it's output (ie boundary gain). You can also tailor the rate at which the efficiency falls off to better minimise sub 20hz output and that over the 80hz (or whatever your chosen level is) crossover point to the front seakers.Also vented boxes are more effcient than sealed boxes. Link to comment Share on other sites More sharing options...
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