Using same box for different subs - is this OK?

[Hartman]

I have two 12 inch Kicker subs now, they're the older Kicker Comps I THINK, but I'm not sure because I bought them with the box and everything and it didn't come with detailed instructions. My question is, I'm thinking about buying a new set of 12 inch Kicker Comp VRs and I was wondering if I could use the same box that I have now without having any airspace problems. Thanks.

 

[leenjen]

what are the dimensions of the box (including the thickness of the walls), and what are the specs of the new subs (fs, Qts, and VAS)?

 

[Hartman]

Ok, I went out and took some measurements of the box

Length - 29 inches
Height - 15 inches
Depth - 12 inches
Board thinkness - little less than 3/4 of an inch

The box is kind of sloped on the ends, it kind of looks like this when looking at one of the sides: /_\ , but it only has a slight slope.

I want to replace my current subs with Dead Link Removed

If they do fit, I plan on getting these subs and another Kicker ZR240 amp and running each sub off of one of the ZR240's.

 

[leenjen]

that enclosure size should be fine. but since it is made out of 5/8 PB instead of 3/4 MDF, it might flex a little. and the sound quality will suffer as a result. if you make or buy another enclosure, i recommed making it larger and building it out of MDF. you'll get much deeper bass and better sound quality with those subs in a larger and stronger enclosure.

 

[Hartman]

I don't think I have ply or particle board, but I could be wrong. If it's worth noting, there's also a partition in the center of the box that seperates the two subs.

 

[leenjen]

well that's good. it helps to brace it so it wont flex too much.

like i said, that box will work fine with the comp VR subs. but a larger box will produce deeper bass and will get much louder. each sub is only getting a little over 1 cuft of airspace. kicker recommends anywhere from 1 cuft to about 4 cuft per woofer.

 

[Hartman]

How would 3 Kicker Comp VR's sound in this box:

Triple Angle Enclosure

Obviously, it would be considerably more to buy three of those subs plus this box. I'm not really sure what to do yet. Also, if I go with three subs, I'll have to get another amp too, which would mean my ZR240 would be running one sub, and I would have to get a stronger 2 channel amp to run the other two and try to get equal outputs on each sub.

Decisions decisicions

 

[beavis195]

With the triple box, there are no dividers separating the subs, so you might get crosstalk and cancelation. Get a box with 3 separate chambers, 1 for each sub.

 

[leenjen]

if all the subs are wired mono, then cancellation wont occur. they will act as one large subwoofer. seperate chambers would make it stronger though.