This may seem like a pretty basic question. I'm looking to build a new box soon, and like the idea of both subs being in one box, mine right now are each in their own box. In this new box, is it supposed to be like 2 separate boxes attached in the middle, or is it supposed to be one big box?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by zumiez007 &raquo;</TD></TR><TR><TD CLASS="quote">This may seem like a pretty basic question. I'm looking to build a new box soon, and like the idea of both subs being in one box, mine right now are each in their own box. In this new box, is it supposed to be like 2 separate boxes attached in the middle, or is it supposed to be one big box?</TD></TR></TABLE>It depends on the subs, but most like to be in the same box, if you are running them in mono or mixed mono, [best way] You will need to know what size the box needs to be, [net air volume] 94

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by fcm &raquo;</TD></TR><TR><TD CLASS="quote">It depends on the subs, but most like to be in the same box, if you are running them in mono or mixed mono, [best way] You will need to know what size the box needs to be, [net air volume] 94</TD></TR></TABLE>

i dont get what you mean when you say most like to be in the same box? two subs in a single box shouldnt sound any different than 2 subs in the same box with a divider prodided the internal air space is equal for each sub. thats also provided you're giving both subs the same signal.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EBP_SI &raquo;</TD></TR><TR><TD CLASS="quote">

i dont get what you mean when you say most like to be in the same box? two subs in a single box shouldnt sound any different than 2 subs in the same box with a divider prodided the internal air space is equal for each sub. thats also provided you're giving both subs the same signal. </TD></TR></TABLE>I agree, just a lot easier to do it in one chamber, and there are a few, [some older Pioneers ] that don't like to be in the air space, not sure why 94

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by fcm &raquo;</TD></TR><TR><TD CLASS="quote">I agree, just a lot easier to do it in one chamber, and there are a few, [some older Pioneers ] that don't like to be in the air space, not sure why 94</TD></TR></TABLE>

but with the proper shared airspace the resistance to movement the air offers should be equal whether its larger with 2 drivers or smaller with one. as long as the airspace is kept in proportion with the number of drivers i dont see how it could be any different.

one reason why i like the divider in the center is because its an extremely effective method of bracing the box. if you want to go all out, build the box with no parallel surfaces

 

Ok, that sounds right. Most places I've read have it as two chambers, but some use only one. I have 2 Pioneer 450w subs which use 1.5cu each. I was just wondering if using only one chamber would produce a greater SPL than with two chambers (sealed or ported)?

 

you will get 3db gain automaticly if you put the subs in one big box, instead of there own seperate boxes, but you have a lil better sq if you have them in seperate boxes. go with one box, eiser to build, you won;t hear any difference.

 

would haveing it ported in one chamber show a difference than ported in two chambers?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by CarAudioPro &raquo;</TD></TR><TR><TD CLASS="quote">you will get 3db gain automaticly if you put the subs in one big box, instead of there own seperate boxes,</TD></TR></TABLE>
Never really heard that one before.

I would make seperate chambers IMHO they sound alot better. Do it 1/2 assed and it will sound 1/2 assed

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by CarAudioPro &raquo;</TD></TR><TR><TD CLASS="quote">you will get 3db gain automaticly if you put the subs in one big box, instead of there own seperate boxes, but you have a lil better sq if you have them in seperate boxes. go with one box, eiser to build, you won;t hear any difference.</TD></TR></TABLE>

how do you figure? you're still displacing the same amount of air


Modified by EBP_SI at 2:46 AM 12/2/2004

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EBP_SI &raquo;</TD></TR><TR><TD CLASS="quote">

how do you figure? you're still displacing the same amount of air

Modified by EBP_SI at 2:46 AM 12/2/2004</TD></TR></TABLE>


im going to go with the cavern effect... echos in a larger area... same thing as the SQ increasing when the speakers have their own air.. but... instead, that reverberation make the box put out more....

PURELY speculation, im no expert

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by CooBlueDAB &raquo;</TD></TR><TR><TD CLASS="quote">im going to go with the cavern effect... echos in a larger area... same thing as the SQ increasing when the speakers have their own air.. but... instead, that reverberation make the box put out more....

PURELY speculation, im no expert</TD></TR></TABLE>

exactly. it works.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by CooBlueDAB &raquo;</TD></TR><TR><TD CLASS="quote">

im going to go with the cavern effect... echos in a larger area... same thing as the SQ increasing when the speakers have their own air.. but... instead, that reverberation make the box put out more....

PURELY speculation, im no expert</TD></TR></TABLE>

but in a properly built enclosure the back wave should be controlled and treated to not cause this echo.