I look forward to seeing what they can do. And what they'll look like built up. I'm sure with your supply you'll cook up something tasty.No measurements yet, either, as I'm building up new E'Wave PC boards with switchable sensitivity for prototypes right now, but I may sneak in a curve or two later today. Mine are the 1.5" throat version, so it's gonna be BMS 4555, 2435HPL, or JBL 2452H-SL the drivers.
Despite several E'Wavers having verified my contention that the "standard" waveguide outperforms many older horn designs, including substantially larger ones, and the general consensus that it significantly challenges most everyone's preconceptions as to how well E'Wave might actually perform, there remains a perception that E'Waves and E'Wavers are weenies.
I have the PE stock ERSE I-Cores in inductances from 1.0 to 3.5 mH, and they are all the same physical size and mounting configuration, and fit the PC boards exactly.
It does matter, of course; that's a beautiful inductor and air core is best if we can find one that works for rational money. Look at the inductors Westlake uses in their crossovers, for example. No way can i afford that action.
I think you are missing something. I'm 6'1" with a wingspan of 76" finger-tip-to-finger-tip. That would be my mounting configuration. That doesn't address the width involved within my total girth. I also happen to have a 32" waist, which might make me a 1.0 mH coil (if I were an inductive coil). A 2.7 mH coil, wound with the same wire gauge on the same bobbin, will be fatter in the middle. That can cause problems on an existing circuit board when the choke is too fat to clear other pieces and parts already there.
Naw, Bob, it's you who's missing something; you're jus' talkin' trash direct to the board's designer here, is what. See my sig pic, and:
I was just responding to your statement that they are all the same size. Looking at your photo proves they aren't. The 1.0 and 1.5 are the same size around the midsection (at least part of it), but the 2.0 has an additional layer of winding, and the 3.5 has at least two of them, making both of them wider in the middle. My comment wasn't meant to be taken from the perspective of a custom PCB that will accept the outer parameters of chokes of any value made within said outer parameters.Naw, Bob, it's you who's missing something; you're jus' talkin' trash direct to the board's designer here, is what. See my sig pic, and:
[Thanks for thinkin' about it, tho.... :thmbsp: ]
]
That's a vintage Model 19 passive XO, which I usually grab for initial testing of unknown CD systems as opposed to working out custom comp for each one. It's adjustable, but limited to ~10 dB of HF comp, max. That gets me to something listenable, typically, and tells me what I need to do, in this case, 4 -5 dB more "boost" with this driver, to get the system playing flat. I'll try BMS, which usually requires less, next. :thmbsp:It sounds as if it has the sound qualities down, now how about the eq it takes to get flat?
We discussed this in an L300 thread just yesterday:Reading wayyy back in this thread, Wayne Parnham tells us that all constant directivity horns need the same EQ - so I think that means the xover for the 'E-wave' horn should work for these larger horns as well. I'm guessing that the larger size would give more controlled directivity into lower frequencies. Not for me right now, but more ideas! I think these would retrofit nicely into an L300 or L200 cabinet
I noticed these other 40x90 degree Pyle horns on the MCM website:
9"x17" (will need an adapter for a 1" thread on horn.)
http://www.mcmelectronics.com/product/PYLE-PH916-/53-995
and a 7.75"x17.5" (thread on, but 1.4")
http://www.mcmelectronics.com/product/PYLE-PH818-/53-990
For comparison, the standard Pyle version of the E-wave horn is a 6.5"x12"
http://www.mcmelectronics.com/product/PYLE-PH612-/53-970)
Reading wayyy back in this thread, Wayne Parnham tells us that all constant directivity horns need the same EQ - so I think that means the xover for the 'E-wave' horn should work for these larger horns as well. I'm guessing that the larger size would give more controlled directivity into lower frequencies. Not for me right now, but more ideas! I think these would retrofit nicely into an L300 or L200 cabinet
That's a vintage Model 19 passive XO, which I usually grab for initial testing of unknown CD systems as opposed to working out custom comp for each one. It's adjustable, but limited to ~10 dB of HF comp, max. That gets me to something listenable, typically, and tells me what I need to do, in this case, 4 -5 dB more "boost" with this driver, to get the system playing flat. I'll try BMS, which usually requires less, next. :thmbsp:
There are answers to the SSC "air" thing; I'm thinking and working them through. The simplest solution is to EQ them flat off-axis, as I have approximated here, and not toe them in, or toe them in Geddes extremely, as-is. Another approach would be to replicate the characteristic on- vs. off-axis behavior of a perfed screen with a grille, as described in the tech note.
I don't hear it, BTW, but that doesn't necessarily mean others wouldn't; we're looking at 5 dB at 20 kHz on-axis, but diminishingly less below there....
