Opposed Subwoofer Design
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Joined: Feb 2004
Posts: 1,703
connoisseur
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OP
connoisseur
Joined: Feb 2004
Posts: 1,703 |
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.
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Re: Opposed Subwoofer Design
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Joined: Sep 2004
Posts: 11,458
shareholder in the making
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shareholder in the making
Joined: Sep 2004
Posts: 11,458 |
Ummmm....They're opposed?
::::::: No disrespect to Axiom, but my favorite woofer is my yellow lab :::::::
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Re: Opposed Subwoofer Design
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Joined: Jan 2008
Posts: 175
veteran
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veteran
Joined: Jan 2008
Posts: 175 |
The Seaton submersive is thought by many to be one of the best subwoofers available at any price. It's dual opposed.
Last edited by turbo16v; 02/07/13 01:00 AM.
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Re: Opposed Subwoofer Design
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Joined: Jan 2004
Posts: 13,840 Likes: 13
shareholder in the making
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shareholder in the making
Joined: Jan 2004
Posts: 13,840 Likes: 13 |
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
M80s VP180 4xM22ow 4xM3ic EP600 2xEP350 AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85
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Re: Opposed Subwoofer Design
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Joined: Dec 2003
Posts: 10,420
shareholder in the making
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shareholder in the making
Joined: Dec 2003
Posts: 10,420 |
Wasn't the original Audiobytes sub an opposed driver system?
Jason M80 v2 VP160 v3 QS8 v2 PB13 Ultra Denon 3808 Samsung 85" Q70
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Re: Opposed Subwoofer Design
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Joined: Apr 2003
Posts: 16,441
shareholder in the making
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shareholder in the making
Joined: Apr 2003
Posts: 16,441 |
Nope. The original Audiobyte sub (EPZero, which I have) is an isobaric sub.
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Re: Opposed Subwoofer Design
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Joined: Dec 2007
Posts: 7,786
axiomite
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axiomite
Joined: Dec 2007
Posts: 7,786 |
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.
Fred
------- Blujays1: Spending Fred's money one bottle at a time, no two... Oh crap!
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Re: Opposed Subwoofer Design
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Joined: Sep 2004
Posts: 11,458
shareholder in the making
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shareholder in the making
Joined: Sep 2004
Posts: 11,458 |
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?
::::::: No disrespect to Axiom, but my favorite woofer is my yellow lab :::::::
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Re: Opposed Subwoofer Design
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Joined: Dec 2001
Posts: 334 Likes: 5
Axiom Engineer devotee
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Axiom Engineer devotee
Joined: Dec 2001
Posts: 334 Likes: 5 |
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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Re: Opposed Subwoofer Design
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Joined: Mar 2012
Posts: 286
local
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local
Joined: Mar 2012
Posts: 286 |
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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