designing a sub and fullrange box for several speakers...

[bottomfeeder]

whats your plan?
You still need to build a cabinet around a driver(or both) , if you close the top you basically are sharing the cabinet with both drivers, but that cabinet is not big enough for 2 drivers,
I would recomend building this into a isobaric, what you would have to do is mount both drivers on 1 side (both speaker cones facing each other) I use long bolts with sheetmetal tabs on them , so when you tighten one it tightens the other .
You need to wire one driver out of phase (or they will cancell each other)
What you will gain is the woofer is fooled to beleive the cabinet is twice the size .

[mulletdude]

ok what makes you think it is not big enough for both drivers like this... i built it 2 times the size of one drivers recomended enclosure size...
so what you want me to do is make this isobarik and have it look gotty because both drivers are on the same side.

[901Fixer]

Originally posted by mulletdude
ok here it is now its small enough to attach.

Those drivers are mounted Push Push. They should be wired the same as each other so when one cone moves outwards so does the other. The positive lead of each channel should attact to the positve terminal of each driver. If the displacement of the box is 2x what one driver needs then it should work fine.

If the drivers are wired opposite each other, positive lead to the positive on one driver and positive lead to the negative on the other then there will be cancellation and SPL will suffer.

[mulletdude]

ok thanks for that i guess they are push push... and they are driven like you said but from 2 outputs on my amp... is there any way to get more SPL from this setup short of getting more speakers

[bottomfeeder]

so if they are push/push they are both firing towards each other ?
if so where is the cabinet for the drivers ?
I guess you are firing the cones towards the magnets (backwards from normal) .
So you are setup with a double size box with 2 drivers ?
As far as spl it matters on 2 things ..
How much amp you got for it and what the speaker likes .
You could build 2 ported boxes (dont try and combine the internal)
just put a divider and a port in each chamber .
If you were to build one like mine you could use a smaller box .
But 2 drivers set up where you can see both cones will give you more spl .
Is this going in a car ?

[bottomfeeder]

Originally posted by mulletdude
ok what makes you think it is not big enough for both drivers like this... i built it 2 times the size of one drivers recomended enclosure size...
so what you want me to do is make this isobarik and have it look gotty because both drivers are on the same side.

The cabinet looked small (I guess it was a illusion)
On a isoberic you ONLY see one driver , the other one is next to it
(clamshell design) if your cabinet was a isobaric you could have 4 drivers running .
What is your cubic feet inside your cabinet ?

[mulletdude]

the dimensions are above and are as follows 21.25*15.5*15.25

[bottomfeeder]

Originally posted by 901Fixer


Those drivers are mounted Push Push. They should be wired the same as each other so when one cone moves outwards so does the other. The positive lead of each channel should attact to the positve terminal of each driver. If the displacement of the box is 2x what one driver needs then it should work fine.

If the drivers are wired opposite each other, positive lead to the positive on one driver and positive lead to the negative on the other then there will be cancellation and SPL will suffer.

I was wondering ..
My iso is wired one amp side per woofer , but have you ever tried to series the woofers and run one amp lead to the combo ?
If so does it sound good (as long as the amp is strong enough) ???

[mulletdude]

the amp i currently have is only 100 watts per channel so it would make more sence doing it theyt way i am.

[bottomfeeder]

Originally posted by mulletdude
the dimensions are above and are as follows 21.25*15.5*15.25

thats 2.95 cubic feet , that gives you 1.47 per driver .
Should be fine .
I never tried a box like yours , I usually build 2 individual boxes.
Is this for a car or a home sub ?