High sensitivity, open baffle, single ended lovers dream speaker...

arthurs · « **Reply #140 on:** 23 Dec 2008, 04:27 am »

Give me a shout on cell tomorrow. I'll be out running around in the afternoon with the boys but will find time to catch up.

SetterP · « **Reply #141 on:** 23 Dec 2008, 05:01 am »

If it's easier and you don't mind typing a little I've got my list of questions put together. It may actually benefit others more to hold this discussion publicly.

Either way I'll go ahead and post them in case me or you get's tied up tomorrow. Or if nothing else give you a chance to think them over before we talk on the phone.

How did soundstage and imaging compare to your LS9?

When you said open sounding like a planar do you mean that speaker localization is minimized?

Were the servo subs in Danny's test mules in the w-frame config or h-frame config?

Did you get a chance to check out Danny's sealed servo sub as a standalone or integrated with the open baffles?

Did you get a chance to examine off-axis reponse?

What effect did the ambient rear tweeter have on soundstage width/depth?

How would you compare the sound to more traditional open baffles that you have heard (Danny's OB's or AV123 x-statik)?

As always Art, your thoughts are sincerely appreciated.

Of course Danny, feel free to comment here too.

Danny Richie · « **Reply #142 on:** 23 Dec 2008, 02:16 pm »

Quote

How tall is the speaker?

See plans: http://www.gr-research.com/pdf/paudiobox.pdf

Quote

Danny,
Do you plan to offer these as a finished product?

Short answer is yes, but there will be a little bit of a announcement to follow shortly that will outline a really great offering that will be taking place.

Fatcat · « **Reply #143 on:** 23 Dec 2008, 03:03 pm »

Danny.
I just happened across the finished rendering of these speakers in another forum and I just wanted to say that they look gorgeous!
Bravo!

Best......Carlo.

EARGASM · « **Reply #144 on:** 24 Dec 2008, 06:55 am »

Removed by member.

kyrill · « **Reply #145 on:** 6 Jan 2009, 10:50 am »

I read elsewhere on AC one remark, that high sensitivity speakers actually ask for flea power
sets when regarding tube amps.
I just have (expensive) mods done to my 20-24 watt tube amps.

the reasoning behind the flea power was that tube amps have their high(est) distortion
when playing at their maximum but also their minimum levels

with a sensitivity of 96-99dB i will play at an average level of 0,1 watt or less..
If the reasoning is valid, I know we do not hear HD of 3-5 % in music, but still?

Correction
i read tranny amps, i assumed that meant transformer output amps, so tubes
Maybe that is not the case..

Danny Richie · « **Reply #146 on:** 6 Jan 2009, 10:09 pm »

Not all tube amps are the same. While some do have distortion levels that are quite high. Some are also dead quiet and have distortion levels that rival many solid state amps.

While these did well with some 9 watt single ended prototype amps from Dodd Audio a few weeks back, they also ate up plenty of power from my big amps with no complaints.

Danny Richie · « **Reply #147 on:** 8 Jan 2009, 04:59 pm »

Several pages back some of you guys wanted to see the response posted on a more typical 10db scale. Here you go:

intermission · « **Reply #148 on:** 23 Jan 2009, 01:57 pm »

So what's cooking?
It's all gone quiet!

grubyhalo · « **Reply #149 on:** 23 Jan 2009, 02:01 pm »

Was wondering the same thing...

Danny Richie · « **Reply #150 on:** 23 Jan 2009, 10:27 pm »

There is a lot regarding this speaker in the works. I'll announce a bunch of stuff shortly.

ttan98 · « **Reply #151 on:** 23 Jan 2009, 10:53 pm »

Just curious looking at the FR curve, a 3dB rise from 10-20K, will it cause a high frequency "zing" (brightness at the top end)? I think the titanium diaghram does not help matters.

kyrill · « **Reply #152 on:** 23 Jan 2009, 11:06 pm »

Titanium diaphragm is theoretically a risk for high end sound. But Danny's enthusiasm is NOT theoretical. Trust his enthusiasm , he builds speakers for years, knows how to design, measure and mostly how to listen to them.

richidoo · « **Reply #153 on:** 23 Jan 2009, 11:26 pm »

Quote from: Danny on 23 Jan 2009, 10:27 pm

There is a lot regarding this speaker in the works. I'll announce a bunch of stuff shortly.

cujobob · « **Reply #154 on:** 24 Jan 2009, 12:03 am »

Seems like the upward response is from 15k+ which shouldn't be an issue I'd imagine.

Danny Richie · « **Reply #155 on:** 24 Jan 2009, 12:06 am »

That slight peak is above 15kHz and rolls off if you move off axis. I am pretty sensitive tp top end brightness and I hear no issues with this driver.

Milehighguy · « **Reply #156 on:** 24 Jan 2009, 04:36 am »

One remark, and one question.

I would name this the "bullseye". The large speaker looks like a target, with the tweeter being the bullseye, and you'e saying it hits the bulllseye in terms of performance as well.

Here's the question:

Have you thought of making a speaker like this, except with 3 woofers instead of 2 ?

kyrill · « **Reply #157 on:** 24 Jan 2009, 07:57 am »

3 woofers a side

That would be a monster..for very big rooms

arthurs · « **Reply #158 on:** 24 Jan 2009, 12:35 pm »

Quote from: Danny on 24 Jan 2009, 12:06 am

That slight peak is above 15kHz and rolls off if you move off axis. I am pretty sensitive tp top end brightness and I hear no issues with this driver.

I didn't hear "brightness" the afternoon I spent listening to the prototypes...good detail and air without being etched or edgy...used my own demo disc which has a couple of tunes on it specifically to hear that if it's there, it wasn't....

corndog71 · « **Reply #159 on:** 24 Jan 2009, 03:40 pm »

How apartment-friendly would you say these are? I know the bass would be adjustable but I'm wondering if these might be too much for my apartment. Or more specifically, too much for my neighbors. I really want a set of these, but I also have to be realistic. I don't usually listen at very loud levels but I'm just wondering if the low extension of the bass would be too much even at moderate volumes.