Might you try that without the faceplate between? Would get rid of that transition and reduce the throat depth. I suspect it could clean up the dips a bit.
I haven't measured the 1204s in the wg148s yet.. I trust your measurements much more than mine. That is why I ask.
I wanted to try and mate it up to the MAC-06. Just eyeballing your off axis measurements against each other it seems crossing somewhere between 2-2.5khz would be nice.
I reemed the holes with a unibit one size up, bolted right on. I was going to machine a thin aluminum plate for these Visaton like I did on the Pilot build and try that.
As far as I can tell the two Visaton waveguides have the same flare geometry and mounting for the tweeter, just different baffle mounting shapes.
I removed the tweeter faceplate entirely and crafted some gaskets out of sheet hobby foam, then sandwiched the diaphragm, motor and gasket directly to the waveguide mounting plate with a backer plate and long screws. That way the dome is as flush as possible to the waveguide throat. Based on my basic research it seemed this can help prevent throat cancelations for a dome in a waveguide. Though it is probably not a viable commercial option due to relying mostly on friction and tension to hold it in place... I suspect it might not withstand shipping. So I totally understand why this would not be pursued.
OK I took the rabbit hole. For the mounting flange, I would have my machinist make a thin aluminum mounting plate, but this should give us an idea on bettering the FR measurements.
I use a pc of Formica for the prototype flange.
Well, the measurements are nothing to write home about. The red and pink at top is 0° red being the modified one. The blue and black is 60° the blue being the modified one.
I'd say that is a decent improvement off-axis. And interesting how it fills out the bottom end a bit too.
Thanks for trying. This all seems to confirm for me it should hopefully work out with the MAC-06 ok. Though probably resulting with the typical impedance mountain to taper off the waveguide boost.
PE has SO MANY buyout drivers that I've figured there's probably some gems in there. But none have been interesting enough for me to be the first mover. Pretty sure pwrryd was the first to take a chance on those $5 JDT tweeters.
Comments
I don't see these on your site?
Visaton? Nope, I’ve emailed the company just waiting a response.
https://www.jfcomponents.com/
Might you try that without the faceplate between? Would get rid of that transition and reduce the throat depth. I suspect it could clean up the dips a bit.
I haven't measured the 1204s in the wg148s yet.. I trust your measurements much more than mine. That is why I ask.
I wanted to try and mate it up to the MAC-06. Just eyeballing your off axis measurements against each other it seems crossing somewhere between 2-2.5khz would be nice.
What mods are you guys doing to these tweeters to bolt-on to that 22X15 cm Visaton Waveguide, if I may ask?
I reemed the holes with a unibit one size up, bolted right on. I was going to machine a thin aluminum plate for these Visaton like I did on the Pilot build and try that.
https://www.jfcomponents.com/
OK, thanks-man!
As far as I can tell the two Visaton waveguides have the same flare geometry and mounting for the tweeter, just different baffle mounting shapes.
I removed the tweeter faceplate entirely and crafted some gaskets out of sheet hobby foam, then sandwiched the diaphragm, motor and gasket directly to the waveguide mounting plate with a backer plate and long screws. That way the dome is as flush as possible to the waveguide throat. Based on my basic research it seemed this can help prevent throat cancelations for a dome in a waveguide. Though it is probably not a viable commercial option due to relying mostly on friction and tension to hold it in place... I suspect it might not withstand shipping. So I totally understand why this would not be pursued.
OK I took the rabbit hole. For the mounting flange, I would have my machinist make a thin aluminum mounting plate, but this should give us an idea on bettering the FR measurements.
I use a pc of Formica for the prototype flange.
https://www.jfcomponents.com/
https://www.jfcomponents.com/
Well, the measurements are nothing to write home about. The red and pink at top is 0° red being the modified one. The blue and black is 60° the blue being the modified one.
https://www.jfcomponents.com/
Nothing a little PEQ can't handle . . .
Is that the thing with turning knobs?
https://www.jfcomponents.com/
Something like that, yes. Faster than replacing discrete components/instant feedback - save the file and smile.
I love my set of Freud carbide hole saws!
InDIYana Event Website
I'd say that is a decent improvement off-axis. And interesting how it fills out the bottom end a bit too.
Thanks for trying. This all seems to confirm for me it should hopefully work out with the MAC-06 ok. Though probably resulting with the typical impedance mountain to taper off the waveguide boost.
I’m a sucker at $.50.
https://www.jfcomponents.com/
I used something similar from a TV module. Hope they measure decent
I’ll test those tweeters after lunch. But I did get a chance to test some other buyout I got.
https://www.parts-express.com/EAS8P338A6-Speaker-299-4140?quantity=1
https://www.jfcomponents.com/
3rd order HD is really very low. An array of these might be nice. Sheesh - less than $50 for a dozen....
PE has SO MANY buyout drivers that I've figured there's probably some gems in there. But none have been interesting enough for me to be the first mover. Pretty sure pwrryd was the first to take a chance on those $5 JDT tweeters.
Buyout Sharp Tweeter. 18uF cap 0.5m IEC.
https://www.jfcomponents.com/
[posted in wrong thread]
Pretty good slug of I believe is neo in there.
https://www.jfcomponents.com/
The EAS 3”.
https://www.jfcomponents.com/
Brad, are you doing all of your testing at the same drive level, ie 2.83 Vrms or something else?
Yes 2.83, I also move the mic to 315mm to get a better read on distortion. You see something I need to address.?
https://www.jfcomponents.com/
Looks more like 0.283V given the SPL, hence my previous comments in the IEC baffle thread.
Are those dents in the pole piece/slug from you beating them apart or from the manufacturer beating them in?
From me.
https://www.jfcomponents.com/
Damnit I keep getting tempted to do a buyout build and you are definitely not helping!
Kinda sucks that those 3"ers would require back mounting. Beggars can't be choosey though.