Yes, it seems a bit confusing at first and trying to picture this system and its modifications...
What he has done is incorporated the Bass driver sections of the Studio Grand into this system. Therefore, the stand mounts and steel frames holding this entire panel, also sits on top of these dual bass drivers, that are locate side by side, like two jet engines- hence he has created a true hybrid BUT a highly customized one like no other.
According to him, there are others with Studio ribbon array's who have also placed the bass drivers into their systems for that added heft/punch in the bass. However, as to how far have they succeeded in this design remains to be reviewed. He also did bi-amp the system at first, a few years back but said this muddled the sound and was not an easy task to get all the elements right from driving tweeter/mids with the Gaku's and Sumo's on the bass. Although he claims the sound was very dynamic, it lost musicality by a huge margin.
Therefore, the secret ingredient to this updating the panels to perfection with various elements and wiring to match the Gaku's sound then match that upgrade on the amps, and finally the crossovers simply for the bass to panel integration to take place seamlessly. The Sumo's do a marvelous job and the Kondo G-70 preamp is stunning! Cost of that preamp? dono't even ask... Ribbon elements have been modified not restored, this includes the array placement and magnets. Like I said Graz has only done 20-30% and nothing more, if at all even less! He won't go into more detail on what he has actually done with the ribbons and its elements but whatever it is, the sound reproduced is one of a kind custom made.
This is similar to the Quad's stacked! Now I remember that sound... but with the added bass heft to it. Pictures? yeah right! I have already said far more than what was agreed, so I better log off and call it a day. All I can say is that "sky is the limit" when mods are concerned, and you can really go bananas!
With that in mind, I am very content with the ML hybrids and for that matter in full range stats, the CLX's are still the overall favorite for me, simply because they cost far less than this mega project and they play beautifully!
Cheers mate and have a good one, RJ
"According to him, there are others with Studio ribbon array's who have also placed the bass drivers into their systems for that added heft/punch in the bass"
Yes, it was known as the Apogee Studio Grand. Christoph has a pair...
And funny enough, I don't use the subwoofer part on my SG because I think the SRA sounds better on it's own in the bass
After all the SRA/SG panel goes way below 30Hz :b
Hello dipole lovers
After seeing in @microstrips footnote that he now uses Apogee Duetta Sigs as interim Speakers and knowing that he also uses/used big Soundlabs, I thought it is time to resurrect this thread and ask microstrip about the differences between the Apogees and the Soundlabs.
With what amps are you driving the two different Dipoles, microstrip?
Hello dipole lovers
After seeing in @microstrips footnote that he now uses Apogee Duetta Sigs as interim Speakers and knowing that he also uses/used big Soundlabs, I thought it is time to resurrect this thread and ask microstrip about the differences between the Apogees and the Soundlabs.
With what amps are you driving the two different Dipoles, microstrip?
The Duetta's are living tonight - an interesting sound, some fun, but an heavy mistake ... No possible comparison with Soundlab's, except for bass slam, where they are winners. The Soundlab's immerse you in the performance in a way the Duetta's can't. IMHO great for rock and pop instrumental, not my cup of tea. But a friend fortunately loved them ...
The best I could get from them was using the Parasound JC1's - they love power and bass control. The Lamm M1.2 was nice but did not match them in drive.
The speakers are mint, measure perfectly, but not modified in any way.
Thanks for the power and bass control vote - And people try to drive them with SETs. I have found both Martin Logan hybrids (mine and UK Paul's) and analysis audio to be more involving than some duettas (no comparison on bass). However, when a duetta gets it right, it exceeded - like in the case of Lissnr's Duetta, but then UK Paul's modded Logans were slightly better. Bigger apogees and Scintilla (due to pure ribbon) are a different level. Soundlabs - the one heard in Italy, a Majestic 845 with Spectral 10 + 90 in a massive room (owner is a 70+ year old, one of the biggest distributors in Italy, long time distributor of Spectral and Boulder) was fantastic. Just simple cheap streamer dac, it was in his TV living room.
I know Martin Colloms thought the Duetta was a better speaker than Scintilla, all in original factory form many years ago, of course.
I know a refurbisher who thinks Duetta is better.
It is certainly more practical.
To microstrip - Parasound A21 (one down from the JC1 monos) is also an excellent solid state Duetta driver, with a good valve pre. The best of many, many SS amps I have tried. Without the valve pre (I was using an EAR868, but any good valve pre should work), I couldn't really listen to it. Which is interesting.
I know a refurbisher who thinks Duetta is better.
It is certainly more practical.
The Duetta's are living tonight - an interesting sound, some fun, but an heavy mistake ... No possible comparison with Soundlab's, except for bass slam, where they are winners. The Soundlab's immerse you in the performance in a way the Duetta's can't. IMHO great for rock and pop instrumental, not my cup of tea. But a friend fortunately loved them ...
The best I could get from them was using the Parasound JC1's - they love power and bass control. The Lamm M1.2 was nice but did not match them in drive.
The speakers are mint, measure perfectly, but not modified in any way.
Thank you for your extensive answer, micro.
But if you had maybe spent a tenth of the time and effort it took you to extract good sound from your dcs stack (your own words), you would maybe think differently about the Duetta Sigs...
Is that by any chance the same refurbisher who has NEVER refurbished a Scintilla?
thanks high hanging grapes MUST be sour