GRT 145 Second Gen Viawave tweeter is getting tested and finalaized.

R-Carpenter

R-Carpenter

As far as I know, the foil has suspension along the perimeter and handles much higher power.
I'll update as more details become available. Dmitri is showing RT850 on Moscow high end audio show and should be back in 3-4 days.

ani_101

oh goody... no waveguide on this one?

R-Carpenter

Dunno yet. I'll have more info next week. I'd like to see waveguide.

Mzisserson

Holy hell, that step response and CSD! 

isaeagle4031

Any idea on the price Roman?

R-Carpenter

Dunno yet, sorry. I know that it'll be able to cross lower but this is all a very general info.

jr@mac

Nicholas_23

Interesting pleasts in the ribbon .Nice to hear the suspension is still integrated into ribbon as well

Nicholas_23

Pleats

JasonP

I think they should keep that machined aluminum faceplate. It's terrific and different.

Bryan@MAC

Oh my!!  What will I do with my Gen-1 Viawaves??  
 

jr@mac

Bryan@MAC said:

Oh my!!  What will I do with my Gen-1 Viawaves??  
 

Oh, I suppose I can take them off your hands, if I have to, I guess... :-p

Mzisserson

Bryan@MAC said:

Oh my!!  What will I do with my Gen-1 Viawaves??  
 

#FirstWroldProblems

R-Carpenter

Bryan@MAC said:

Oh my!!  What will I do with my Gen-1 Viawaves??  
 

You could build a kick ass speaker.

greywarden

Bryan@MAC said:

Oh my!!  What will I do with my Gen-1 Viawaves??  
 

Mount them in the Dog Bunkbed, it'll already have some woofers 

HUEHUEHUE

jr@mac

greywarden said:

Bryan@MAC said:

Oh my!!  What will I do with my Gen-1 Viawaves??  
 

Mount them in the Dog Bunkbed, it'll already have some woofers 

HUEHUEHUE

Groooaaan...

isaeagle4031

I just shot coffee out of my nose! Ouch! Lol

Mzisserson

greywarden said:

Bryan@MAC said:

Oh my!!  What will I do with my Gen-1 Viawaves??  
 

Mount them in the Dog Bunkbed, it'll already have some woofers 

HUEHUEHUE

Its the way "HUEHUEHUE" sounded in my head that got me laughing. 

Face

Where's the waveguide?   

R-Carpenter

Face said:

Where's the waveguide?   

There are may be 2 versions of the tweeter. One with wave guide, one without. As far as distortion goes, 145 will cross at 2khz without wave-guide. 
I can't wait to get a pair to play around.

ani_101

Do you have any other details, efficiency, power handling, etc

R-Carpenter

My understanding that efficiency is up in 98db and power handling is 20w+ RMS. I should have more info soon.

R-Carpenter

At

At this point the tweeter undergone field testing. The composite foil and mounting are finalized and it's going in to production.
The first distortion sweep is taken at 1V. Note that the sensitivity of the GRT145 is in the upper 90db.
Second distortion sweep is taken at over 5V! 
It looks like it'll be able to cross around 1600hz. That's borderline revolutionary for a small size ribbon.

I will be getting first production pair in 3 weeks and will post my own data.
Intended sale price will be between $350 and $400 a pair.
As I've done before with RT850, first few people who are interested in trying, testing, publishing and commenting will be given a very serious discounts.

While I haven't listen to the GRT myself yet, high order distortions look similar to Beryllium SS and lower order looks similar to conventional domes.

Mzisserson

....these come out now.

Nicholas_23

Those are sexy looking ribbons 

jr@mac

Put me down for a pair. 

kennyk

I gotta have a pair. 

ani_101

I am interested in a pair. Can I get the dimensions... Through hole, outside flange diameter and flange thickness?

R-Carpenter

R-Carpenter

I am glad a few people are interested. These babies are 1.5 kilo each!