yes but the Topic of this thread is
Bandpass? A 4th order bandpass? You are talking about a TH as a 6th order bandpass?
I guess I asked the question lol! OK I see your point... but for the thread title I mean, This offset BR business seems to fit.
High Output Subs that play 20hz to ≥200hz
Thats not happening with a TH, can you explain the distortion part? The 1w sensitivity in these sims are 5db over a similar sized Sealed cabinet, at 20hz and 30hzBandpass? A 4th order bandpass? You are talking about a TH as a 6th order bandpass?
I guess I asked the question lol! OK I see your point... but for the thread title I mean, This offset BR business seems to fit.
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if you don't offset the drivers properly and tune the massload properly you won't get that wide nice smooth FR, so its not just another BRIt's just a BR enclosure. Nothing special other than 2 x 18" drivers in the same enclosure.
good ole offset driver 'qw' resonator with three 60 cm folds? your driver has a super compliant suspension and a low QES, kinda interseting. Might need to enlarge all of this to fatten up the bottom end ?
(there’s a bit of stuffing in the 4800cm2 x 60 cm offset stub section)
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You left off the ‘mass loaded’ port/shaped section? That might have shortened the resonator down to 120 cm (~216 hz as the (3x 1/4 wavelength) pipe resonance @ top off requested bandwidth )
3 fold again? port @ like 1/3 Sd though? didnt you used to design them like this back in the qw group court?
3 fold again? port @ like 1/3 Sd though? didnt you used to design them like this back in the qw group court?
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As the Dude states in the thread title and OP, he also wants accuracy in the ≥200Hz range, hence your simulations in posts #28,29,34 & 36 fail to provide for his want, as they all have huge cancellations in the ≥100 range.ODTaperedTL @ 404.916 liters.
Dude wants 20hz, hence longer than 10 foot path.
And I see where he got that range from.
https://en.wikipedia.org/wiki/Subwoofer
"The typical frequency range that is covered by a subwoofer is about 20–200 Hz for consumer products,[1] below 100 Hz for professional live sound,[2] and below 80 Hz in THX-certified systems."
He came to a DIY site for a CONSUMER PRODUCT frequency response.
https://en.wikipedia.org/wiki/Subwoofer
"The typical frequency range that is covered by a subwoofer is about 20–200 Hz for consumer products,[1] below 100 Hz for professional live sound,[2] and below 80 Hz in THX-certified systems."
He came to a DIY site for a CONSUMER PRODUCT frequency response.
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