You lower Fs by sqrtHz
Perhaps a bit misleading without the conditions.
A tightly coupled isobarik woofer has 1/2 Vas, same Fs, same Qt, 2x mass and BL vrs a single one of the woofers.
So (ignoring the volume of the isobarik chamber) if you put a compund driver in a box volume V, it has the same response as a single driver in a box of 2*V volume. So isobarik simply lets you use a box half as big (+ chamber) as you would need for a single woofer.
4 drivers (2 isobarik pairs) can be put in the volume you would use for 1.
Putting
The loss is you go 4 Ohm without any 2.83VSPL referenced increase.
But you also reduce the work load on the drivers by half, as well as lessen harmonic distortion, especially if one of the drivers is physically inverted from the other.
Of course. Those are quality gains to consider as positives. Still there is a 3dbW loss in sensitivity that demands horsepower. The good thing is there are affordable high SPL pro woofers around that were not the norm in the 80s when some companies like Linn used the principle, plus class D. So this Isobarik thing becomes very viable again IMHO.
Of course. Those are quality gains to consider as positives. Still there is a 3dbW loss in sensitivity that demands horsepower. The good thing is there are affordable high SPL pro woofers around that were not the norm in the 80s when some companies like Linn used the principle, plus class D. So this Isobarik thing becomes very viable again IMHO.
Exactly, hence why I'm seriously considering incorporating an isobaric design in my next project.
Has anybody done distortion testing for an isobaric pair of woofers vs a single woofer (in double the size)?But you also reduce the work load on the drivers by half, as well as lessen harmonic distortion, especially if one of the drivers is physically inverted from the other.
I'm curious to see how the distortion actually changes.
Anyone who has 2 identical woofer/midrange drivers , note Kef Blades .
Have tried same config with 2 Peerless 832873 . Sounded lower distortion .
Need another Peerless 830869 , so can do single Vs dual distortion tests .
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JeffL
Have tried same config with 2 Peerless 832873 . Sounded lower distortion .
Need another Peerless 830869 , so can do single Vs dual distortion tests .
.
< KEF_Blade_3DCab Full Screen Image — Reviews and News from Audioholics >
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JeffL
What I am looking for is a woofer/tweeter combo that will give me extreme detail while being natural and smooth. I thought maybe the Seas Excel would do that for the woofer, not sure about the tweeter. I am still considering the morel supreme 130. Is there a better tweeter I should consider? Also, what size woofer would be best? I was looking at the 7 inch.
What is the difference between paper and magnesium? Will one provide more bass response/ better detail?
For tweeters why not look at Hiquphon?
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