Dual skar12 paraflex C CRAM

A 2x12 parallel resonator(any form similar to cram! Or ROar! isn’t gonna be ‘beat’ per this ‘SPL’ goal (right?) and is easy to create at ~mid /lower mid 30s using the skar ddx12 .

Higher compression ratios (?yikes?) and lower tuning has already failed or showed problems quickly all over the FB communities that use these drivers. look and see for yourself before you smell the steamy VC adhesives (they stink enough when new already!!) 😝
 
So close! I used BW's philosophy...

L12 = 1ft.
L23 = 5ft.
L34 = 3ft.
L45 = 1ft.

10ft to 30hz.

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I couldnt milk it anymore in generic quick/dirties in the new Ch3 mode(another cool spin on PH1 without the parallel to series L45 exit by David!) or plain CH here as a folded wave cannon . Screen capture is in 0.5xpi, sorry in advance
 

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You guys nickel and dime things that aren’t even relevant. KISS works everytime and measurement is identical to simulation If it’s just plain and simple … (who cares about 1.548896537888 cm one way or another when resonator lengths is the only thing that must match up or offset driver entry points specific to the next harmonic , etc. (1/3 down in a tL or 3:1 paralle TL..).

Your wrapping up snakes instead of simple minimal folding and describing intimate details (+/- 2.36528843788cm of masterbating 😝) that aren’t measurable in a REAL cabinet as ‘ sound ‘


chasing detaiks that dont even exist in reality to resonance? just dumb it down and it always works
 

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Simple . 30cm , 150 cm , 150 cm, 30cm

If you wanna type 33.02 ? go ahead. It doesnt matter ? 30 cm is 288 hz and 33.3333 is 259.2hz. (These are landmarks in time, compass, degrees (2880/90 or 25920/90?)

but 360 cm is 24 hz. And 85% less if you reduce the crossection by 50% in the second half. Or flip it the other way and invert the change ? Louder but not as low .

build a ‘better bass reflex’ not over complicated stuff that does t care about those little details? (If that makes sense??) 😝😝🙏🏻🙏🏻

one 180 fold isn’t gonna hurt anything, quite the opposite in fact, now you’re cooling the voice coils
 

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You guys nickel and dime things that aren’t even relevant. KISS works everytime and measurement is identical to simulation If it’s just plain and simple … (who cares about 1.548896537888 cm one way or another when resonator lengths is the only thing that must match up or offset driver entry points specific to the next harmonic , etc. (1/3 down in a tL or 3:1 paralle TL..).

Your wrapping up snakes instead of simple minimal folding and describing intimate details (+/- 2.36528843788cm of masterbating 😝) that aren’t measurable in a REAL cabinet as ‘ sound ‘


chasing detaiks that dont even exist in reality to resonance? just dumb it down and it always works
If 2 x 12's requires 1,066cm2 in a compound horn (BP6P), then you can't use 1,000cm2 for the model. They won't fit. In THAT model, the red line is the speaker mounting board.
 
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The wide bandwidth shorter rectangle version ? These are ‘simple’ and work great everytime. You might have to angle the baffle to fit the driver …

(these are way smaller with the driver you are using )
 

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If 2 x 12's requires 1,066cm2 in a compound horn (BP6P), then can't use 1,000cm2 for the model. They won't fit. In THAT model, the red line is the speaker mounting board.
I appreciate the detail, (and it’s needed for the cutlist ). But did you subtract bracing volume and motor/basket displacement and…. (No)

and we both know this.

but for ease of useful compare /contrast simulation and quick and dirty response shapes that matter …. 1066 isn’t even real, but use it if you want..it’s no better or worse. It changes Nothing in the response shape .
 
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1,066cm2 is too small too. That is the smallest CSA you can go.

1,066cm2 = 12.56" speaker diameter x 2 x 6.58" mounting depth.

That's why I used 1,342cm2 for easy driver installation, removal, and room for the voicecoil vent to breathe.

1342cm2 = 26" x 8" {7.60" total speaker height}.

I like using whole numbers for easy math.
 
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