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Deon, This is true, but with a passive sub the amplifier will always be the variable and a large variable it is too. Heck, at higher SPL levels I've seen even "calibrated" mics vary by a bunch. Compare results from an Audio Control to a Linear X and I'm sure we'll see a difference...

Thats also why I have not released any groundplane measurements either, again they can vary quite a bit unless done with the same mic, same hardware, etc. __________________________________________________ ____ Kyle, It is possible to post relevant number that can be used for comparison...

News: We don't have enough real interest to be able to do this through just this board and I don't have the disposable income to drop the required $25,000 to order 50 on my own, so I am working other avenues to get these out. We'll wait till 'produc spc.' proto has been measured, and post to...

"Is the Le going to remain 6.6mh, and is there still going to be a copper faraday in use?" It's not possible to tell what the Le will be. There will be MORE copper in this motor, and the Alu former will further affect Le. "so why not incorporate dual 2ohm coils would make 1ohm, 2ohm and 4...

Ok fella's. Spoke with Thilo a couple days ago. We're building a beta (group purchase) 18 to verify the surround / throw / etc. Soon as he's paid, roughly 8 weeks later he will have the pole steel and magnets (he has to order them special, doesn't keep it in stock) and coils. Coils will be dual...

The Beast-II is not scheduled for production, and there is no pre-order. IF there's enough interest, there is a group purchase. Thilo (TC-Sounds owner and driver designer / bass head extraordinair) is bending over backwards to do the group an enormous favor. His minimum purchase for an OEM...

The Beast-II is not scheduled for production, and there is no pre-order. IF there's enough interest, there is a group purchase. Thilo (TC-Sounds owner and driver designer / bass head extraordinair) is bending over backwards to do the group an enormous favor. His minimum purchase for an OEM...

Fire driver from one end, ports from other end.

Nathan, "I'm assuming as well that a non-flared 6" PVC port would still outperform a combination of flared 4" ports" A single 6" port has a surface area of 28.27 square inches. A pair of 4" ports have a surface area of 25.13 square inches. Using dual equally treated four" ports will give...

Nathan, "I have researched but cannot determine what effect the port size or length has to do with anything in a sub's performance other than to allow the driver to breathe and to avoid port noise." A port does not let a driver 'breath'. A port acts as a helmholtz resonator and is actually...

Chris H "What's the weight of the Beast?" 89 lbs. 4 one inch tall by 10 inch o.d. magnets and the rest of the magnetic circuit weigh a BUNCH! :-) Mike D. "How would one of these compare to the Blueprint 1803?" Never having measured or played with an 1803, I cannot comment. Do you have...

"I get some pretty lousy results with both sealed and vented ." Try 6 cubes tuned to 16hz with a 30hz lpf1 and the standard 80hz lpf2. 3dB down points of 16hz and 80hz. I'll post LEAP sims of various box's to the web sight. "What gives? Any hints in designing a better box? ~~ Just an...

Bill, "*Beefy!*" You could certainly say :-) "Can you give us more info on the motor itself, perhaps with some drawings? (anyone surprised I'm asking, what with my motor fetish? ) I'd like to know more about the farady treatment." No drawings. It's a bit unique, though privately I...

"Umm...cool." We think so.... "What's the Vd on the passives?" 14.75" diameter @ 1/3 of edge roll, 3" linear P-P excursion (3.5 absolute max) so~~ 8.4L per passive. "A pair enough?" Depends on how you define 'enough'. A pair with ~~17 liters of helmholtz resonator would certainly...

Hello All, I have just received the All Clear from the driver vendor. So here are a few more details, and a link to brows. The vendor is the incomparable OEM MFR of ultra high excursion high performance woofers, T.C. Sounds. The driver we are looking to release under a this Group Purchase...

"We can use your pr enclosure you built for the tumult and just put another 3/4" front baffle over the hole to fit the 18 incher." Just for giggles, why don't you model this up? :-) In my 7 cube, 16hz PR modeled enclosure, T*m*lt low pass set to 80hz, and the 18 set to 60hz, they track...

"If it isnt too expensive, Id be happy to check it out in the near future." "As to Price, think T*m*lt. "

"I was going to order a dozen, but for that Le..." All, Please understand this is just a feeler to see if there might be interest in a STUPENDOUS 18" driver heretofore unavailable to the DIY community. It was my thought I might be in a position to give back to my roots. The parameters...