to port or not to port

nakkor · 16th July 2007, 04:17 AM

i recently purchased a Cerwin-Vega 12" V-max sub. it is a dual 2 ohm speaker that can handle 600 rms..(not too shabby imho) it will be driven by a Cerwin-Vega EXL 1000D that puts out 500 rms...my friend let me put it in his ported box, in which it slammed, or should i keep the speaker in the sealed box that i build to CV air space specs even though it isn't as loud, and doesn't seem to be as responsive to my broad range of music taste....i know box type is generally personal preference, but any insight that yall could give me would be great

jnb · 16th July 2007, 05:05 AM

Putting the driver into a vented box that wasn't designed for it might have produced a resonance that appealed to you. Your closed box is probably the more accurate of the two responses.

You could attempt to find a similar resonance by careful room placement first. After all, your friends ported box may not sound the same in your room either, or in a different location in his room for that matter.

If that fails then maybe a ported box is what you're wanting.

Amit_112dB · 16th July 2007, 07:11 PM

sealed enclosures as the most forgiving, u can do lots of mistakes in calculation.
In a ported enclosure u need to be careful, proper port length is reguired to change rear wave by 180 degress, ported enclosures r not general enclosures, u cant use just any ported enclosure for any speaker(u can damage ur expensive woofer), but ya u can use any sealed enclosure for sealed, its gonna forgive u easily.

sorry if u think its all crap advice but i m new in this thread, its my 1st post [:P], regards

richie00boy · 16th July 2007, 07:59 PM

No that's OK advice

Welcome.

16th July 2007, 04:17 AM	#1
nakkor diyAudio Member Join Date: Jul 2007	to port or not to port i recently purchased a Cerwin-Vega 12" V-max sub. it is a dual 2 ohm speaker that can handle 600 rms..(not too shabby imho) it will be driven by a Cerwin-Vega EXL 1000D that puts out 500 rms...my friend let me put it in his ported box, in which it slammed, or should i keep the speaker in the sealed box that i build to CV air space specs even though it isn't as loud, and doesn't seem to be as responsive to my broad range of music taste....i know box type is generally personal preference, but any insight that yall could give me would be great

16th July 2007, 07:59 PM	#4
richie00boy Did it Himself diyAudio Member Join Date: Nov 2003 Location: Gloucestershire, England, UK	No that's OK advice Welcome. __________________ www.readresearch.co.uk my website for UK diy audio people - designs, PCBs, kits and more

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16th July 2007, 05:05 AM	#2
jnb diyAudio Member Join Date: Dec 2006	Putting the driver into a vented box that wasn't designed for it might have produced a resonance that appealed to you. Your closed box is probably the more accurate of the two responses. You could attempt to find a similar resonance by careful room placement first. After all, your friends ported box may not sound the same in your room either, or in a different location in his room for that matter. If that fails then maybe a ported box is what you're wanting.

16th July 2007, 07:11 PM	#3
Amit_112dB diyAudio Member Join Date: Jul 2007	sealed enclosures as the most forgiving, u can do lots of mistakes in calculation. In a ported enclosure u need to be careful, proper port length is reguired to change rear wave by 180 degress, ported enclosures r not general enclosures, u cant use just any ported enclosure for any speaker(u can damage ur expensive woofer), but ya u can use any sealed enclosure for sealed, its gonna forgive u easily. sorry if u think its all crap advice but i m new in this thread, its my 1st post [:P], regards

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