[Jonathon Janusz]

Danny, out of curiosity, with folks discussing the coaxials developed for the new Elac models and your reservations about metal drivers, are there any coaxial drivers out there currently that you do like?  I know the p-audio drivers did well but are now long gone, but I'm interested to know if there is anything you like out there right now either in the pro-audio space or among the more domestic/audiophile marketed coaxial drivers?  I just have in my head that a GR designed speaker with a good 'smaller' coax and a pair of 8" servos could be a really good speaker that would fit well in a lot of spaces.  An evolution of the V2, sort of.

Funny that you asked that.

I have been developing a new coaxial driver. Samples are now ready to be sent. So I will have them here for testing shortly.

Is Danny manufacturing his own drivers or just developing one to be manufactured by someone else? In the latter case you still have to get someone to manufacture it or not so sell the company to a new owner that wants to take it in a new direction, drop you as a customer or decide that they are not making enough money on it  and jacking the price up significantly.

The drivers that GR Research offers (besides the BG drivers that we stocked and sold) are all proprietary drivers that I designed and had made. I bring them in 500 to 1000 units at a time. So I know I have some control over the things you just mentioned. It also helps me keep the retail prices lower than any competitors. 

Nice!  Can you share any more details yet?  I'm picturing either a 6.5" or 8" diameter, treated paper, polycarbonate frame, maybe neo magnets, and either a dome tweeter or a poly diaphragm compression tweeter, two versions of cone - high and low Q for either box or OB, and a swappable tweeter back cap either closed off for boxed use or molded open with a proper waveguide for OB.  A coaxial version of the no holds barred M165 or maybe its big brother. 

I want to save this and hopefully keep this conversation going.  This was pulled from another thread that I admittedly veered a little off topic.  Thanks!

[Folsom]

I think this is interesting. It'd be cool to see something smaller, and that didn't use a compression driver, or at least used something unusually good. I'm thinking something like the you see here, except DIY friendly, and good.

[Doublej]

Perhaps something like this

https://www.madisoundspeakerstore.com/coaxial-speaker-kits/seas-loki-mkii-coaxial-kit-parts-only-each/

or this

http://vandersteen.com/products/vlr-wood

??

[nickd]

Nice Thread Jonathon,

I built a set of Danny's "Super V's" partially because I like the Idea of a coax Mid/Tweet. Time and phase are critical for realistic sound IMOP. The 12" P Audio driver is amazing for what it is.

That said, there are two camps of listeners. Those that like wide dispersion (I am in that camp) and those who like limited dispersion designs.

So what camp do you design for?

I like idea of the new flat cone and small diameter of the new Technics SB-C700 coax.

What about a fresh design on a planar coax. Is it possible?

[DaveC113]

I think this is interesting. It'd be cool to see something smaller, and that didn't use a compression driver, or at least used something unusually good. I'm thinking something like the you see here, except DIY friendly, and good.

Hmm, this looks familiar:

https://www.madisoundspeakerstore.com/coaxial/seas-excel-c18en001/m-magnesium-cone/dome-coaxial/

That looks very similar to the TAD Evolution coax driver, just without the beryllium tweeter. I think the TAD Reference series coaxial is the best driver in the world. 6.5" beryllium cone, beryllium tweeter... $45k price tag for the "compact" speaker model CR-1. Coax does have a lot of potential...

[Danny Richie]

Hmm, this looks familiar:

https://www.madisoundspeakerstore.com/coaxial/seas-excel-c18en001/m-magnesium-cone/dome-coaxial/

Magnesium cones, booooo. Those things have some massive break up in the top end. And for that kind of money, that's crazy.

[DaveC113]

Magnesium cones, booooo. Those things have some massive break up in the top end. And for that kind of money, that's crazy.

If it is the same driver as the TAD Evo series but with a beryllium tweeter, than it is awesome and worth every penny. 2nd best mid/tweeter in the world behind the TAD Ref series imo.

[Danny Richie]

If it is the same driver as the TAD Evo series but with a beryllium tweeter, than it is awesome and worth every penny. 2nd best mid/tweeter in the world behind the TAD Ref series imo.

I'm pretty sure that is not the same driver.

[Danny Richie]

If it is the same driver as the TAD Evo series but with a beryllium tweeter, than it is awesome and worth every penny. 2nd best mid/tweeter in the world behind the TAD Ref series imo.

As good as those driver are, I'd still take the planar magnetic drivers from BG in an open baffle configuration over them in a flash.

[S Clark]

Since this thread is about our hosts efforts to bring a new coax to the market, I'd bet it's going to be a paper cone driver.  I've never known Danny to sing many praises of metal cones- or metal baskets either.

[drewm]

Since this thread is about our hosts efforts to bring a new coax to the market, I'd bet it's going to be a paper cone driver.  I've never known Danny to sing many praises of metal cones- or metal baskets either.

Treated paper cone driver with a soft dome tweeter, polymer basket. We know him too well!

[Danny Richie]

Since this thread is about our hosts efforts to bring a new coax to the market, I'd bet it's going to be a paper cone driver.  I've never known Danny to sing many praises of metal cones- or metal baskets either.

Imagine the M-165NQ driver with its large 44mm voice coil:



With the T26SG tweeter in the center using a Neo magnet:

[SoCalWJS]

Magnesium cones, booooo. Those things have some massive break up in the top end. And for that kind of money, that's crazy.

Hmm, this looks familiar:

https://www.madisoundspeakerstore.com/coaxial/seas-excel-c18en001/m-magnesium-cone/dome-coaxial/

That looks very similar to the TAD Evolution coax driver, just without the beryllium tweeter. I think the TAD Reference series coaxial is the best driver in the world. 6.5" beryllium cone, beryllium tweeter... $45k price tag for the "compact" speaker model CR-1. Coax does have a lot of potential...

I clicked on the link to the Madisound driver. I was looking at the frequency response graph (although the resolution is fairly poor).

Isn't that a pretty bad FR? All over the place.

[DaveC113]

I'm pretty sure that is not the same driver.

I'll take a pic of mine, it looks more than just a little similar. The tweeter is obviously different but the mounting pattern, size, surround, etc. are identical.

[S Clark]

Imagine the M-165NQ driver with its large 44mm voice coil:
With the T26SG tweeter in the center using a Neo magnet:

Now that's pretty interesting.  It could make an amazingly good small medium size speaker.  Don't know what you've got planned for it, but I could see a very wide market for a smaller, cheaper version of the V series using the 8" servos. 

[drewm]

I clicked on the link to the Madisound driver. I was looking at the frequency response graph (although the resolution is fairly poor).

Isn't that a pretty bad FR? All over the place.

Crossing it over low enough could tame quite a bit of the upper frequency breakup on the woofer, but that tweeter couldn't really be fixed, the response is rough and if you brought it down to the level of the woofer at the crossover point, it still falls down a good 15db up top which isn't good at all and would be tough to tame. Also the low frequency falloff and limited excursion of that woofer means it probably would only provide enough bass in a 3 way system, they also hint at that by saying "This is a midrange/tweeter speaker, we do not recommend using it as a woofer/tweeter."

[drewm]

Imagine the M-165NQ driver with its large 44mm voice coil:



With the T26SG tweeter in the center using a Neo magnet:

These could be very amazing. I'm curious to see how you design the tweeter throat/woofer cone, I know that balancing act is usually the toughest part of these. Maybe you've got a new trick up your sleeve.

[Danny Richie]

These could be very amazing. I'm curious to see how you design the tweeter throat/woofer cone, I know that balancing act is usually the toughest part of these. Maybe you've got a new trick up your sleeve.

Yep, that is a tricky part.

[AKLegal]

I'm interested in the possible configurations for these.  Would you need mate it with a couple of M165NQs or M165s like in the X-Oticas for higher output?  I would love a slim Super V like speaker with 3 8" servos in a h-frame right below one of these coaxials. 

[revg1952]

I agree with AKLegal; this is something I would like to see also!

Gary/Revg1952