Is a dual sealed,ported or bandpass sub is good for a car? - diyAudio
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Old 24th May 2003, 04:41 AM   #1
Tony.ca is offline Tony.ca  Canada
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Question Is a dual sealed,ported or bandpass sub is good for a car?

Hi evry 1,

I wanted to build a dual 12" sub for my car.Just wanted to know which is the best suitable enclosure to stick with. I listen to all types of muzik. can anyone please give some suggestions.


thanx,

Tony
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Old 24th May 2003, 06:23 AM   #2
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Hi Tony...your a neighbor....tell us what vehicle your planning on a sub for

Cheers!!The DIRT®
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Old 25th May 2003, 05:52 AM   #3
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if you plan on building the bandpass yourself---it will be very very large. the bandpass boxes you see at flea markets and online are prefabricated, and a bandpass for a sub must be built very close to spec.. it is quite difficult and if this is your first time building, i would not suggest it--- also, why bandpass?? looks, or u want the extra gain out of it?? if u want to be loud--just go ported.. the difference is negligable in most cases

-chris
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Old 27th May 2003, 01:32 AM   #4
Tony.ca is offline Tony.ca  Canada
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thanx guys,

Just wanted to know which enclosure would be the best for all types of muzik and my car is honda accord 2000 model.I think I shd stick to the sealed sub. will it give me more space in the trunk?
thanx,



Tony
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Old 27th May 2003, 02:48 AM   #5
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I think sealed is the best way to go. I have 2 x 12"s, in a sealed box.

What are the brand 12"s, and do you have the T/S specs for them to custom build a box to the right size?

-Maz
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Old 27th May 2003, 03:29 AM   #6
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sealed is the easiest to make sound good.. so go that route.. especially since you are building it yourself--and if you arent the best builder, you can be off by as muhc as 20% air space volume and not hear a difference

good luck

-chris
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Old 27th May 2003, 03:48 PM   #7
Tony.ca is offline Tony.ca  Canada
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I am using the earthquake 12"s what will be your opinion if I can go with the passive radiator enclosure.I do have the t/s para for these,will the passive radiators make the box much smaller or bigger.


Tony
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Old 27th May 2003, 04:30 PM   #8
RobM is offline RobM  United States
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Depends upon the sub. For a low Qts, high Fs sub you want a ported enclosure (avoid those subs for SQ use anyway...), and for a mid Qts, low Fs sub use a sealed. There's no great benefit to a bandpass and substantial drawbacks.
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Old 5th June 2003, 09:34 AM   #9
Doug is offline Doug  Canada
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Default enclosure choice

Quote:
Originally posted by RobM
Depends upon the sub. For a low Qts, high Fs sub you want a ported enclosure (avoid those subs for SQ use anyway...), and for a mid Qts, low Fs sub use a sealed. There's no great benefit to a bandpass and substantial drawbacks.
Actually, weather or not a driver is suited for a closed or vented box is usually based on the EBP ( Efficiency Bandwidth Product ). To calculate the EBP the formula is EBP = Fs divided by Qes. EBP values of 50 and below indicate closed boxes only. EBP values above 50 and especially approaching 100 indicate that the driver will perform better in a ported design.

To say to avoid subs for SQ use isn't correct as you have not indicated if you want sound quality or the boomy " one note bass " that is so popular these days. Basically, you can buy any woofer you want to and design an enclosure for SQ or resonant one note bass.

Doug
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Old 5th June 2003, 07:50 PM   #10
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Can you post the parameters and/or model number of this subwoofer?
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