posted
I'm toying with the idea of going from a pair of 8" subs (it's a small car)to the single 8" isogroup thereby taking up half the space. Using the clamshell (face-to-face) method will be the ideal option, but I'm wondering if anyone has tried this. Effectively I'm going from a 16" surface area of cone back to 8". Will the extra power produced effectively compensate for the smaller volume of air being moved?
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Posts: 5 | From: Sydney, NSW, Australia | Registered: May 1999
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posted
Hmmmm. What kind of a car do you have that you can't fit a box for an 8 ?
Iso loading will not give you any real advantage besides making your box smaller. The output will be very similar to that of just one sub. Besides the fact that you can give more power them. Examle why you might use Iso. If you have too much power for one 8, or if you sub is the wrong load for you amp. I would venture to say that with most 8's it would do you no good to have double power with no more surface area most 8's don't need much power to reach their limits.... JMO. If you can't fit 2 8 in small sealed box just use one in a medium box.
Anybody else got an opinion....?
------------------ ******************* Founder: Street Sounds Car Audio Club ******************* If It Don't Read 150+ it Ain't Loud......
Posts: 289 | From: Howell, MI | Registered: May 1999
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posted
I agree with audioextreme, the output would probably be less than a single 8 even if you doubled the power. I had an Iso setup for years but the space savings isn't as noticeable since subs are requiring less space than 5 years ago and you have to deal with the outside subs magnet sticking out 4-5 inches. You can find 8's that only need .2-.3 cu ft.
posted
In the July issue if AS&S, Bill Murphy(601+ ama) had 6 kicker 10's in the hatch of a 93" Mazda RX-7 and when it closed it made a 3 pairs of isobaric clamshell subs, similar, or I guess exactly like you are going to do. I hope this helps.
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posted
Isobarik enclosures let you use 2 subs in 1/2 the airspace of 1 of the same subs would normally take by itself. The other largest advantage to this design is that it compensates for the speakers inherent non linearities. But you do get this at the supposed 3 db SPL penalty vs. 1 speaker.
Posts: 5349 | From: Nash-Vegas, TN | Registered: May 1999
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posted
Isobarik enclosures let you use 2 subs in 1/2 the airspace of 1 of the same subs would normally take by itself. The other largest advantage to this design is that it compensates for the speakers inherent non linearities. But you do get this at the cost of the 3 db SPL penalty vs. 1 speaker.
Posts: 5349 | From: Nash-Vegas, TN | Registered: May 1999
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posted
They do let you use two subs in half of the enclosure space of one sub however you will not see the benifit of the second sub besides the fact that it reduces enclose size. You will have no gretter surface area than one sub, no more linear excursion than one sub, their for no more output....
------------------ ******************* Founder: Street Sounds Car Audio Club ******************* If It Don't Read 150+ it Ain't Loud......
Posts: 289 | From: Howell, MI | Registered: May 1999
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