[Montreal_Jazz]

Is this a new driver and how is it different than the M-165NQ?

https://gr-research.com/product/m-200nq/

[mlundy57]

Based on the 200 nomenclature, it would be a 200mm or 8” driver while the 165 is 165mm or 6-1/2”.

I see the possibility of a couple different versions of the NX-Otica down the pike. One with three NX-200 NQs in place of the M165s and a more expensive version with three 8” servo subs in place of the M165s and an 8” Studio Monitor.

[jmimac351]

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[Montreal_Jazz]

It's quite a beauty!! Hence this got me wondering about this baby in the NX series...Yummy!!

[jmimac351]

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[FullRangeMan]

I suspect similar CMS measurements from drivers of different sizes don't equal the same story in clarity.
Cms or Vas are not important for ''clarity'' in loudspeakers with complex cross-overs.
These Cms values are small, when Cms/Vas goes up the Fs goes down so it could offer more bass, but it not the case in this expensive Scan-Peak midrange, it have a very limited range of use due the small frequency range i.e. midrange in a hi-priced 3-way system.

[Tyson]

I think the thing that makes the GR drivers so special is they are lightweight, well damped and high sensitivity.  They are built for speed.  They are midrange drivers first.

The Scan Speak drivers are also well damped.  But they are not very sensitive.  They are built for bass first and midrange second.  That’s why they sound slow compared to the GR drivers.

[underdawg2024]

I like it 8 inch better sounding to me than 6 1/2 inch just my opinion.

[jmimac351]

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[Early B.]

The sensitivity of the 8545 and M165NQ are the same, that's one of the 3 reasons I decided to try the M165NQ with the Merlin VSM Esotar tweeter network in the Merlin VSM cabinet.  I don't think the difference in clarity I'm hearing is due to a "loudness" issue.

I think the point is that the drivers are designed for different purposes. The Revelators are notorious for digging deep and one can expect the trade-offs to be sensitivity and midrange clarity. That's exactly what you're experiencing. You're searching for a measurement that will tell you what these drivers will sound like, but a simpler explanation is the design goals.   

[Montreal_Jazz]

I think the thing that makes the GR drivers so special is they are lightweight, well damped and high sensitivity.  They are built for speed.  They are midrange drivers first.

Lars Risbo wrote a nice wp about that: https://purifi-audio.com/blog/tech-notes-1/a-fast-driver-needs-a-light-cone-or-does-it-6

[Montreal_Jazz]

Just to have some comparison. (I know not the same price point)

Purifi 6.5 paper cone Mid-Range vs  6.5 paper cone Woofer vs GR 6.5







Purifi Full Datasheet for reference:

https://ptt.purifi-audio.com/web/content/product.template/271/x_studio_data_sheet?download=1
https://ptt.purifi-audio.com/web/content/product.template/280/x_studio_data_sheet?download=1

[Danny Richie]

I think the thing that makes the GR drivers so special is they are lightweight, well damped and high sensitivity.  They are built for speed.  They are midrange drivers first.

The Scan Speak drivers are also well damped.  But they are not very sensitive.  They are built for bass first and midrange second.  That’s why they sound slow compared to the GR drivers.

Tyson pretty well nailed it.

Those Purifi drivers are great and they will maintain a nice linear BL over most of their range with little cone flexing. However the moving mass is 24 grams. Compare that to our M165NQ woofer that is just over 13 grams.

If you want clarity from a small woofer then just remove the lower ranges from it and then it is not being dictated by the bass notes. Everything else gets cleaner, faster, and will have better resolution.

Oh yeah, that M200NQ driver is an 8" version. Its done. It's great. We just haven't placed an order for them yet as we don't quite have enough application for it right now.

[jabouley]

Two in a box for a base module for the  NX studios? Sign me up

[jmimac351]

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[jmimac351]

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[Danny Richie]

I think I have an idea for that 8" NQ driver... and I can pretty much do the same with my Wilson Duettes and the Rythmik F8 servo subs I just bought.

A floor standing 3 way with the 8" NQ driver and 2 - 8" servo subs would be something else.  Like the Salk Exotia 3:

We've laid those drivers out like that. Surprisingly the 8" NQ is a little bigger in diameter than the 8" servo subs and it made it look a little odd. The 8" servo subs looked better (more closely matched in size) with the 6.5" NQ woofers.

[jmimac351]

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[Hobbsmeerkat]

None of our woofers are flush mount due to ease of installation it provides.

[mlundy57]

None of our woofers are flush mount due to ease of installation it provides.

Which makes perfect sense since your speakers are designed for the DIY market and it is much easier, and takes fewer tools, to cut one through hole which can be done with a jigsaw than to cut partial depth ledge and a through hole. Not that hard with a router but routers cost more than a jigsaw.

Also the mounting flanges of the GR drivers are sloped so they provide a smooth transition from the top of the driver to the baffle so the typical edge diffractions that result from surface mounting aren't an issue.