Grandeur

Rick Craig · « **on:** 19 Jun 2009, 06:46 pm »

Coming soon! Scan-Speak Revelator woofer and RAAL ribbon tweeter monitor!

richidoo · « **Reply #1 on:** 20 Jun 2009, 12:44 am »

Sounds cool Rick!

cstory · « **Reply #2 on:** 20 Jun 2009, 03:13 pm »

Yeah!!! I can't wait. aa

kip_ · « **Reply #3 on:** 20 Jun 2009, 06:05 pm »

Which raal?

bpape · « **Reply #4 on:** 20 Jun 2009, 06:10 pm »

That combination certainly has the pedigree to be something special.

Bryan

Rick Craig · « **Reply #5 on:** 20 Jun 2009, 06:11 pm »

Quote from: kip_ on 20 Jun 2009, 06:05 pm

Which raal?

The same one in those $15K speakers.

70-20XR

redskinsfan · « **Reply #6 on:** 8 Jul 2009, 09:37 am »

Rick, would the 70-20XR work as the T in an MTM with dual 7-inch Revelators, say in a ported floorstander, or would a different Raal model work better in that application?

Rick Craig · « **Reply #7 on:** 8 Jul 2009, 05:22 pm »

Quote from: redskinsfan on 8 Jul 2009, 09:37 am

Rick, would the 70-20XR work as the T in an MTM with dual 7-inch Revelators, say in a ported floorstander, or would a different Raal model work better in that application?

I usually suggest 5.5" or smaller drivers for a MTM like this one with the 5" Illuminator and 70-20XR. You can use a 7" provided you don't mind a narrow vertical sweetspot. If you consider a 7" MTM make sure the manufacturer can supply vertical response graphs.

cstory · « **Reply #8 on:** 8 Jul 2009, 06:31 pm »

Just a guess, but if you wanted dual 7" revelators in a floor standing system, why not think about something like the TRT with the 70-20 as the tweeter? I know I did, it's just that my budget this time could only afford 1 revelator per speaker and not 2.

Rick,

I know you usually don't say a lot about the sound of your speakers, except to say that they all sound good

, but can you share any impressions you might have about the difference in sound between the Prestigio and the Scan Speak Illuminator MTM in the photo above?

Regards,

Chuck

Cue Tom Petty, "The waiting is the hardest part". (referring to the Raalevelator of the original post)

richidoo · « **Reply #9 on:** 8 Jul 2009, 06:42 pm »

Welcome back Rick.

General question, what's the advantage of MTM? To control vertical dispersion? With a ribbon tweeter having god vertical control, is it still beneficial? Increased sensitivity maybe?
Thanks
Rich

rahimlee54 · « **Reply #10 on:** 8 Jul 2009, 09:36 pm »

Will you still have those Thursday of next week? I'll be in the area and would love to come by and give them a listen if possible.

Rick Craig · « **Reply #11 on:** 9 Jul 2009, 01:31 am »

Quote from: cstory on 8 Jul 2009, 06:31 pm

Just a guess, but if you wanted dual 7" revelators in a floor standing system, why not think about something like the TRT with the 70-20 as the tweeter? I know I did, it's just that my budget this time could only afford 1 revelator per speaker and not 2.

Rick,

I know you usually don't say a lot about the sound of your speakers, except to say that they all sound good , but can you share any impressions you might have about the difference in sound between the Prestigio and the Scan Speak Illuminator MTM in the photo above?

Regards,

Chuck

Cue Tom Petty, "The waiting is the hardest part". (referring to the Raalevelator of the original post)

Once I do some more listening I'll let you know. I also plan to demo the new design for some of the AC members if possible before the pair ships.

tbrooke · « **Reply #12 on:** 9 Jul 2009, 02:55 pm »

Let me know when you do - I think I joined AC

Tom

Rick Craig · « **Reply #13 on:** 9 Jul 2009, 04:40 pm »

Quote from: richidoo on 8 Jul 2009, 06:42 pm

Welcome back Rick.

General question, what's the advantage of MTM? To control vertical dispersion? With a ribbon tweeter having god vertical control, is it still beneficial? Increased sensitivity maybe?
Thanks
Rich

The MTM does have more controlled vertical dispersion but how it behaves depends on the drivers and crossover design. The shorter ribbons like the 70-20XR actually have fairly wide vertical coverage up to about 10K so most of the MTM's vertical effect is due to the woofers or mids. The crossover design also effects the coverage as well.

You gain some sensitivity and output with the second woofer due to the mutual coupling and lower impedance. The problem with the larger woofers and increased center-to-center spacing is that the woofers start to beam and decouple lower in frequency. The tweeter then cannot go low enough to fill in the response and is really susceptible to being overdriven if the crossover point is too low.