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Forums » General Discussion » Technical Questions » Opposed Subwoofer Design
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#389316 - 02/06/13 04:48 PM
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![]() connoisseur ![]() Registered: 02/04/04 Posts: 1693 Loc: Omaha, Nebraska |
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#389321 - 02/06/13 06:43 PM
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![]() shareholder in the making ![]() Registered: 09/27/04 Posts: 11437 Loc: Central NH |
Ummmm....They're opposed?
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::::::: No disrespect to Axiom, but my favorite woofer is my yellow lab ::::::: |
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#389323 - 02/06/13 07:57 PM
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![]() veteran ![]() Registered: 01/19/08 Posts: 175 Loc: SkiUtah! |
The Seaton submersive is thought by many to be one of the best subwoofers available at any price. It's dual opposed.
Edited by turbo16v (02/06/13 08:00 PM) |
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#389326 - 02/06/13 08:08 PM
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![]() shareholder in the making ![]() Registered: 01/29/04 Posts: 13567 Loc: Iowa |
I heard an Epik Empire once, crazy performance. Almost got a few of them over Axiom, will always wonder.
http://www.epiksubwoofers.com/products.html
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M80s-VP180-4xM22ow-4xM3ic-EP600-2xEP350 Anthem AVM60 Outlaw 7700 Emotiva A500 Epson 5040UB |
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#389331 - 02/06/13 09:15 PM
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![]() shareholder in the making ![]() Registered: 12/26/03 Posts: 10415 Loc: Calgary, Alberta |
Wasn't the original Audiobytes sub an opposed driver system?
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#389336 - 02/06/13 10:09 PM
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![]() shareholder in the making ![]() Registered: 04/02/03 Posts: 16437 Loc: Ben Lomond, California |
Nope. The original Audiobyte sub (EPZero, which I have) is an isobaric sub.
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I can explain it to you but I can't understand it for you. |
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#389338 - 02/06/13 10:44 PM
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![]() axiomite ![]() Registered: 12/06/07 Posts: 7786 Loc: Canada |
The design works just fine. I'm not sure that physics backs up the claim of vibration cancellation. I've heard it keeps the sub from jumping around if you are using two monster 18" drivers.
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Fred ------- Blujays1: Spending Fred's money one bottle at a time, no two... Oh crap! |
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#389342 - 02/07/13 05:16 AM
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![]() shareholder in the making ![]() Registered: 09/27/04 Posts: 11437 Loc: Central NH |
Originally Posted By: fredk I've heard it keeps the sub from jumping around What if I WANT them to Jump around Jump around Jump around Jump up Jump up and get down?
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::::::: No disrespect to Axiom, but my favorite woofer is my yellow lab ::::::: |
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#389496 - 02/09/13 12:06 PM
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![]() Axiom Engineer local ![]() Registered: 12/18/01 Posts: 275 |
Originally Posted By: INANE Curious what folks/Axiom think about opposed subwoofer design in general. Where you have two drivers in a single box on opposite sides of each other. Ah...a topic near and dear to my heart. If I am not mistaken, Mirage produced the first commercial subwoofer with an opposed woofer design with the drivers operated in phase with one another. This first model was the BPSS-210 and was originally designed for use in systems with the first Mirage bipolar speakers, the M-1 and M-3. This was in the very early days of home theatre and most of the original subs were sold with 2-channel systems. The design benefits behind opposed driver subwoofers are improved room loading from the multiple drivers and an almost complete cancellation of cabinet vibration. These designs are not gimmicks, they most certainly result in improved performance when well designed. I believe the main reason that we don't see more of them on the market is that the second (or third) driver(s) add significantly to the cost. One thing to watch are designs claiming to have force cancelling drivers where one driver is actually a passive radiator. In this case there will be no benefit in terms of reducing cabinet vibration. Interestingly enough, as Ian and I have been working on design ideas for the "v4" series of subwoofers we have been discussing the possibility of one or two models incorporating a balanced or force cancelling driver configuration. As with everything we do the designs would be evaluated strictly based on their performance versus the current models. Now is as good a time as any to throw the question out there: Is this type of design something that would interest you? ![]() |
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#389500 - 02/09/13 01:27 PM
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![]() local ![]() Registered: 03/27/12 Posts: 275 Loc: Maple, Ontario, Canada |
Originally Posted By: Andrew Originally Posted By: INANE Curious what folks/Axiom think about opposed subwoofer design in general. Where you have two drivers in a single box on opposite sides of each other. Ah...a topic near and dear to my heart. If I am not mistaken, Mirage produced the first commercial subwoofer with an opposed woofer design with the drivers operated in phase with one another. This first model was the BPSS-210 and was originally designed for use in systems with the first Mirage bipolar speakers, the M-1 and M-3. This was in the very early days of home theatre and most of the original subs were sold with 2-channel systems. The design benefits behind opposed driver subwoofers are improved room loading from the multiple drivers and an almost complete cancellation of cabinet vibration. These designs are not gimmicks, they most certainly result in improved performance when well designed. I believe the main reason that we don't see more of them on the market is that the second (or third) driver(s) add significantly to the cost. One thing to watch are designs claiming to have force cancelling drivers where one driver is actually a passive radiator. In this case there will be no benefit in terms of reducing cabinet vibration. Interestingly enough, as Ian and I have been working on design ideas for the "v4" series of subwoofers we have been discussing the possibility of one or two models incorporating a balanced or force cancelling driver configuration. As with everything we do the designs would be evaluated strictly based on their performance versus the current models. Now is as good a time as any to throw the question out there: Is this type of design something that would interest you? ![]() Thanks Andrew for sharing a bit more about what you and Ian are currently considering for the v4 subs! I for one am very interested in the new designs. I need a new sub now more than any other component! So how would a dual opposed sub be better than an EP800? Would it cost more? |
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