New MMT from Dennis Murphy with SOTA drivers!

[yourmando]

Hey who took my dentures and stuck them in a speaker!? Now that speakers have mouths, maybe vocals will sound even sweeter....

 

[KaiserSoze]

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I lost the bet and had to wear it, but I made them promise to keep this picture off the Internet. You can't trust anyone anymore.

 

[Dennis Murphy]

This presentation on the techonology is interesting

He demos the unsealed version so it’s an open dipole. He passes it around while it’s playing, so it must not be that fragile

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Thanks for the link. At least we won't have any trouble naming the new speaker. The first one will be Jaws, and then Jaws the Sequel, and Jaws III..... I think it looks better unmounted.

 

[thewas]

Looks like others have the idea of combining with the Purifi woofers, here in MTM:

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Am curious to see some detailed angular measurements of such a loudspeaker, such a large protrusion must cause significant several edge diffraction / secondary sound source problems both for the midwoofers and the tweeter itself.

 

[Ericglo]

Thanks for the link. At least we won't have any trouble naming the new speaker. The first one will be Jaws, and then Jaws the Sequel, and Jaws III..... I think it looks better unmounted.

Just don't name it after the weaselly mayor Larry Vaughn.

What about James Bond's Jaws Richard Kiel?

 

[oldsysop]

 

[A.wayne]

For those put off by the price the original Heil drivers are available from ESS in CA very reasonably priced ..

Regards

 

[hardisj]

Thanks for the link. At least we won't have any trouble naming the new speaker. The first one will be Jaws, and then Jaws the Sequel, and Jaws III..... I think it looks better unmounted.

 

[hardisj]

Based on this thread, I reached out to Arya to see if they would be willing to send me a test sample to review. I will probably not receive a reply (typical) but I figure it can't hurt to at least ask.

 

[Dennis Murphy]

For those put off by the price the original Heil drivers are available from ESS in CA very reasonably priced ..

Regards

Been there. Done that. I mated it with an 8" woofer crossed at 1000 Hz or so. I didn't think I would ever be able to mate it (in dipole operation) with the ported woofer, but it worked out fine in that regard. The vertical dispersion is awfully narrow, though, and the raw response is a mess. It took a ton of components to kind of smooth it out. I'm hoping Jaws is a lot smoother out of the box and doesn't beam as much vertically.

 

[Ilkless]

So it has wide horizontal dispersion, but I wonder about vertical dispersion. I guess that depends on how the sound is radiated. If it's channelled through the centre line (highlighted in green), it'd be wide, But if it's radiated along the height of the driver, that's quite like a typical AMT. My confusion stems from how the photos show the centre line of the driver is a different colour (blue) from the rest of the driver, so I was wondering the significance of that.

 

[MarcT]

Lol, the WAF is weak with this one!

 

[Trouble Maker]

This isn't the sort of project that will likely have much commercial appeal due to the extreme cost of the drivers.

Yeah, something like $2k in drivers in a Salk Sound enclosure, too rich for my blood!

 

[Trouble Maker]

That tweeter.

 

[Dennis Murphy]

Yeah, something like $2k in drivers in a Salk Sound enclosure, too rich for my blood!

I assume that's for one unit. The total driver cost for a pair will be more like $4,000. But he's going to use cardboard shipping boxes for cabinets to keep the price down. Jim has no pride of workmanship.

 

[yourmando]

So it has wide horizontal dispersion, but I wonder about vertical dispersion. I guess that depends on how the sound is radiated. If it's channelled through the centre line (highlighted in green), it'd be wide, But if it's radiated along the height of the driver, that's quite like a typical AMT. My confusion stems from how the photos show the centre line of the driver is a different colour (blue) from the rest of the driver, so I was wondering the significance of that.
View attachment 82461

In the video I linked above, he said that the vertical dispersion is narrow, dictated by the height of the driver. As you say, like a conventional AMT.

 

[DownUnderGazza]

Been there. Done that. I mated it with an 8" woofer crossed at 1000 Hz or so. I didn't think I would ever be able to mate it (in dipole operation) with the ported woofer, but it worked out fine in that regard. The vertical dispersion is awfully narrow, though, and the raw response is a mess. It took a ton of components to kind of smooth it out. I'm hoping Jaws is a lot smoother out of the box and doesn't beam as much vertically.View attachment 82459

After all your hard work on it, how did you find the end result (of the AMT)?

 

[digicidal]

I assume that's for one unit. The total driver cost for a pair will be more like $4,000. But he's going to use cardboard shipping boxes for cabinets to keep the price down. Jim has no pride of workmanship.

So he's making the new line for Klipsch? Seriously, Jim "slaps together" a cabinet like you do with crossovers. Even though pricey, I still can't figure out how he turns a profit on most of his models.

 

[Dennis Murphy]

Seriously, Jim "slaps together" a cabinet like you do with crossovers. Even though pricey, I still can't figure out how he turns a profit on most of his models.

The answer to that one is pretty simple. He doesn't.

 

[Dennis Murphy]

After all your hard work on it, how did you find the end result (of the AMT)?

That was a one-off and I never got to hear it in stereo. From what I heard in mono, it sounded exceptionally clean. The buyer was pretty much thrilled, so at least it wasn't a dog. But I'm not sure I would ever have been happy with the narrow vertical sweet spot. I walk around too much.