badman said:
I am sure those measurements are for the voice coil and not the exit aperture. The 1.75" (44 mm) looks to be a standard 1" bolt-on diver.
The 1.4" is also a 1" bolt-on driver (apparently from Celestion), but the two-bolt pattern is backwards from standard. ie. you thread into the horn, not into the driver.
[edit] .... oooohhhh, beaten to the punch!
Re: Re: Where to get the QSC?
I guess augerpro's measurements will tell us. He has both the JBL and the QSC. I like the looks of the QSC. We'll see how good my 'engineering eyeball' is and whether I wasted my 72 bucks (won't be the first time). 😉
ZilchLab said:
I guess augerpro's measurements will tell us. He has both the JBL and the QSC. I like the looks of the QSC. We'll see how good my 'engineering eyeball' is and whether I wasted my 72 bucks (won't be the first time). 😉
Hah! Beat you by 4 minutes, Martin. 😀
Here's a link to the Celestion in question. Looks like QSC is OEMing most of their drivers from Celestion except for an occasional B&C.
http://professional.celestion.com/pro/products/cdx/detail.asp?ID=3
Here's a link to the Celestion in question. Looks like QSC is OEMing most of their drivers from Celestion except for an occasional B&C.
http://professional.celestion.com/pro/products/cdx/detail.asp?ID=3
Good one catapult, should I change my sig to trebuchet? 😉
The other driver looks like it's the CDX1-1745.
http://professional.celestion.com/pro/products/cdx/index_ferrite.asp
The other driver looks like it's the CDX1-1745.
http://professional.celestion.com/pro/products/cdx/index_ferrite.asp
For those who are interested, the waveguide and driver for the HPR152i retail for $29 & $223 CDN from the distributor (vs $8 & $60 USD). Guess I'm going to be looking for some cross-boarder transport options. : /
Re: Re: Re: Re: Where to get the QSC?
Well, we'll see how the QSC does. MY WAG theory is that most 'rectangular horns' have a problem on the oblique because they are using two different methods of pattern control for the horizontal and the vertical. I don't see why it should be a problem if there's a nice smooth 'waveguide' transition from round throat to rectangular body. But I've been wrong before. Whatever, the JBL is too small and cuts off too high for my taste. I'm looking for something to use with a 15" like the AE TD15M. Size matters. 😉
ZilchLab said:
Well, we'll see how the QSC does. MY WAG theory is that most 'rectangular horns' have a problem on the oblique because they are using two different methods of pattern control for the horizontal and the vertical. I don't see why it should be a problem if there's a nice smooth 'waveguide' transition from round throat to rectangular body. But I've been wrong before. Whatever, the JBL is too small and cuts off too high for my taste. I'm looking for something to use with a 15" like the AE TD15M. Size matters. 😉
catapult said:
That's 1.5" shown, but it also comes in 1". Less than $150 each, either variant.
Smaller? 2352 biradial is available for weenies. 😎
Actually, the PTs will play surprisingly low (~800 Hz) with large-format (4" diaphragm) throatless drivers, though I haven't assessed pattern control down there. We've moved out of the "Econo" realm with this, however....
Re: Re: Re: Re: Re: Re: Where to get the QSC?
Nice vocab, I had to look that one up
ZilchLab said:
Nice vocab, I had to look that one up
Duh and doubleduh
Hahahaha, why is it that when I'm smart I get so much less attention than when I have a brainfart?
In any case, adapting these to the 2426 (which, being the quality of driver it is, I'd really like to use) is going to be problematic. Since the mounting bracket can be removed for screw-on horn usage, I'm going to give that a try with Zlich's econo waveguide 🙂
Having a solid crossover to start with doesn't hurt, nor does the presence of bass cabinets under construction that would mate perfectly 😀
I'm also playing with casting throats for an OS waveguide and I have the throat geometry pretty well worked out, I just need to get the large conical section figured out, and how to blend the two..... Suffice it to say I may have found a solution to our challenge with OS manufacture. I'd not mind the geddes units, but the cost is high (though fair, given the limited market and PITA factor).
MartinQ said:
Hahahaha, why is it that when I'm smart I get so much less attention than when I have a brainfart?
In any case, adapting these to the 2426 (which, being the quality of driver it is, I'd really like to use) is going to be problematic. Since the mounting bracket can be removed for screw-on horn usage, I'm going to give that a try with Zlich's econo waveguide 🙂
Having a solid crossover to start with doesn't hurt, nor does the presence of bass cabinets under construction that would mate perfectly 😀
I'm also playing with casting throats for an OS waveguide and I have the throat geometry pretty well worked out, I just need to get the large conical section figured out, and how to blend the two..... Suffice it to say I may have found a solution to our challenge with OS manufacture. I'd not mind the geddes units, but the cost is high (though fair, given the limited market and PITA factor).
Re: Duh and doubleduh
Careful, now, the E'Wave crossover is optimized for the Selenium D220Ti driver.
I have shown measurements of how 2426H behaves with that combination, and you have more work to do....
badman said:
Careful, now, the E'Wave crossover is optimized for the Selenium D220Ti driver.
I have shown measurements of how 2426H behaves with that combination, and you have more work to do....
gedlee said:
Sure I'm aware of only the inventor getting the patent.
Sounds like you didn't get a provisional patent then?
The year was only with regard to showing it?
Pete B.
PB2 said:
A Provisional application wouldn't have changed anything.
The year thing is only in the US. There was never any possibility of a patent anywhere else since I had already published everything. Initially, I had no intention of patenting the concepts. I was young and nieve and thought that people would give "credit where credit was due". I learned my lesson.
I didn't say it would have changed anything just wondering if you used a provisional.
Yes, we all live and learn. I have been through the process and am the inventor on 3 patents held by one of my past employers.
Seems that the patent system mainly works for people/businesses with the funding to pay for the application and to enforce. Big business has corrupted the system. Very little help for the individual inventor.
Pete B.
Yes, we all live and learn. I have been through the process and am the inventor on 3 patents held by one of my past employers.
Seems that the patent system mainly works for people/businesses with the funding to pay for the application and to enforce. Big business has corrupted the system. Very little help for the individual inventor.
Pete B.
noah katz said:
Noah,
I made a mold out of my XT1086, and then I used bondo to smooth out the kink in the throat. I'll post some pics in this thread soon.
One thing that's a bit of a bummer is that it varies from oblate spheroidal more than I'd realized; it wasn't obvious until I actually created the mold. I have an OS waveguide here, I'll post some pics of both, to show the difference.
Stay tuned...
http://www.diymobileaudio.com/forum/diy-mobile-audio/60146-creating-perfect-soundstage-3.html
Patrick Bateman said:
Thank you!!
btw, Im that guy.....I will throw $$ at a great solution.
Im out sourcing reticulating foam now with some companies. If I can get them to mold foam exactly for several waveguides maybe we have something that we can add to our waveguides.
That link is extremely cool, unity horn design???
- Status
- Not open for further replies.