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can anyone explain the benefits/disadvantages over two side by side drivers?
pros and cons of dual opposed?
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nobody?
If one has two drivers in the same enclosure, whether they are side by side or an opposing baffles, the drivers "see" the same internal volume, so size is not an issue.
At 80 Hz, the wavelength is appx. 14 feet long, and all one needs to do is make sure either subwoofer is properly situated in the room properly.
The main advantage of dual opposed drivers is they cancel out the cabinet vibrations.
At 80 Hz, the wavelength is appx. 14 feet long, and all one needs to do is make sure either subwoofer is properly situated in the room properly.
The main advantage of dual opposed drivers is they cancel out the cabinet vibrations.
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does this hold true for the sub1 and sub2 6 drivers in the same enclosure?
does this hold true for the sub1 and sub2 6 drivers in the same enclosure?
Correct. Let's take, for example, 6 of the 10 inch drivers for the Sub2 ... when the designers worked on the internal volume, let's say that they determined 20 liters per driver was the right amount of net volume based on the eq curve, power, etc ... then the unit would have 120 liters for the six, and all 6 would "feel" the same load as a single would in a 20 liter box.
Correct. Let's take, for example, 6 of the 10 inch drivers for the Sub2 ... when the designers worked on the internal volume, let's say that they determined 20 liters per driver was the right amount of net volume based on the eq curve, power, etc ... then the unit would have 120 liters for the six, and all 6 would "feel" the same load as a single would in a 20 liter box.
The drivers "work" against the internal "air spring" at the same "rate" regardless whether they are on opposing baffles or the same baffle.
Think of it this way, if the drivers are moving, say, one liter of air when moving out, they will compress one liter of air while moving in, and will do so whether on the same or opposing baffles.
The drivers "work" against the internal "air spring" at the same "rate" regardless whether they are on opposing baffles or the same baffle.
Think of it this way, if the drivers are moving, say, one liter of air when moving out, they will compress one liter of air while moving in, and will do so whether on the same or opposing baffles.
Dual opposed drivers are the best for canceling even-order distortions, which many folks say are the most "objectionable" type. The box is normally about twice the size of the single driver enclosure. The design is neither new, nor particularly innovative, but it can sound very good when executed well.
Having a Epik Tower with one front firing 15" driver, the best results I got from it was always with the driver (and thus port) firing in the direction of the LP ie energy directed at the LP. I thought placement of my Empire would be a problem becasue one driver can be position to the LP at a time. Not so. Both driver's are now perpendicular to the LP and it sounds great.
I have never heard that even-order harmonic distortion is more "objectionable" than odd-order harmonics.
I know that in the world of amplification odd-order harmonics are clearly more objectionable. I can only surmise that the same thing applies to subwoofers.
I have never heard that even-order harmonic distortion is more "objectionable" than odd-order harmonics.
I know that in the world of amplification odd-order harmonics are clearly more objectionable. I can only surmise that the same thing applies to subwoofers.
This has nothing to do with the drivers being dual opposed vs. two side by side drivers - the cabinet would need to be twice the size regardless.
In fact, it's quite possible that dual opposed would be lighter than with two on the same baffle, as the dual opposed arrangement requires less bracing, due to the "cancelling of vibration" the drivers exhibit when on opposite baffles.
I am pretty sure, though, that you were thinking in terms of dual drivers period vs. a single drive - but check the opening post.
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This has nothing to do with the drivers being dual opposed vs. two side by side drivers - the cabinet would need to be twice the size regardless.
In fact, it's quite possible that dual opposed would be lighter than with two on the same baffle, as the dual opposed arrangement requires less bracing, due to the "cancelling of vibration" the drivers exhibit when on opposite baffles.
I am pretty sure, though, that you were thinking in terms of dual drivers period vs. a single drive - but check the opening post.
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