Zu loudspeakers

morricab

Well-Known Member
Apr 25, 2014
3,146
380
83
Switzerland
>>...Will all be capacitor coupled, IT coupled, direct coupled? EI core, double C core? You see my concern drawing too many conclusions from single examples of various types....<<

You must be joking. Your concern does not concern me in the slightest. I have an RF problem with SET due to solar PV in one room, and I have a bass problem with SET due to a new speaker in another room. I have listened to a variety of alternatives plus have commissioned several circuit types implemented by the same amp builder, using some power tubes outside the KT88/90/100/120/150, EL34, 6550 realm. It's not an objective nor full-scope exercise by intent. It's me applying over 50 years experience with this realm to look into a few of the amplification white spaces that might inform where I land wrt replacing SET in my systems, and possibly solve some amplification problems others bring to me from time to time.

That's it. Most of the above will be represented. If it's not useful to you, I invite you to ignore it.

Phil
Those concerns are tube concerns and not specifically SET concerns. I still scratch my head when you say the new Druids are not SET friendly though...
 
Aug 27, 2018
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Los Angeles, CA
Hi Cobra,

Thanks for doing the hard work, and looking forward to your sharing of the results.

Out of curiosity, in your years with Zu, have you tried some famed amps like Kondo Ongaku, top Ayons, top Cary, top Wavac, Air Tight 300B, etc.,? My gut tells me some of those amps are probably very good for some speakers and certain tastes, but there is also a lot of marketing involved in reinforcing the mythology.

How do they mate with Zu? Thanks
****

Yes, many. Everything you mentioned works with Zu. Someone even bought an Ongaku by once to audition with Zu. It was disappointing to me, but most "famed" amps are. Ongaku sounds more worthwhile on a relatively-efficient crossover speaker for the way it mitigates the basic compromise intrinsic to a crossover speaker. But an Ongaku + an Audionote speaker does not sound remotely as authentic as a Zu Druid 6 or Definition 4 powered by Audion, for example, or Marc's 211s. On Zu, Ongaku has limited magic to contribute. So, while Ongaku on Audionote sounds better in some respects than, say, Audion Golden Dream powering Audionote, on Druid 5 or 6, I'll take Audion.

I don't take Ayon and Cary seriously as musically-convincing amplifiers. At any price point there is always something better. I regard Air Tight highly. Of the Japanese triode builders, AT amps are the most objective at sane prices. If I had never found Audion, I'd have probably had AT in my systems for the past 15 years. I did have a chance to hear Wavac 300B on Zu...oh perhaps a decade ago. That was a revelation in collapsing the "distance" between recording and speaker. Wavac has all the Zu and Audion qualities of directness, speed, transparency, agility, tone density -- just more so at exalted prices. If I choose to put well into five figures into amplification (X2) again, I certainly could land on Wavac on sonic attributes.

Phil
 
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Likes: caesar

morricab

Well-Known Member
Apr 25, 2014
3,146
380
83
Switzerland
****

Yes, many. Everything you mentioned works with Zu. Someone even bought an Ongaku by once to audition with Zu. It was disappointing to me, but most "famed" amps are. Ongaku sounds more worthwhile on a relatively-efficient crossover speaker for the way it mitigates the basic compromise intrinsic to a crossover speaker. But an Ongaku + an Audionote speaker does not sound remotely as authentic as a Zu Druid 6 or Definition 4 powered by Audion, for example, or Marc's 211s. On Zu, Ongaku has limited magic to contribute. So, while Ongaku on Audionote sounds better in some respects than, say, Audion Golden Dream powering Audionote, on Druid 5 or 6, I'll take Audion.

I don't take Ayon and Cary seriously as musically-convincing amplifiers. At any price point there is always something better. I regard Air Tight highly. Of the Japanese triode builders, AT amps are the most objective at sane prices. If I had never found Audion, I'd have probably had AT in my systems for the past 15 years. I did have a chance to hear Wavac 300B on Zu...oh perhaps a decade ago. That was a revelation in collapsing the "distance" between recording and speaker. Wavac has all the Zu and Audion qualities of directness, speed, transparency, agility, tone density -- just more so at exalted prices. If I choose to put well into five figures into amplification (X2) again, I certainly could land on Wavac on sonic attributes.

Phil
The Wavac HE-805 was one the best amps I ever heard.
 
Aug 27, 2018
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Los Angeles, CA
You're welcome to take my 75SE as well and let me play with the class D monos for a spell
Keith,

The REF75SE would be an interesting mainstream amp to throw in the mix for context. Will be in touch about the feasibility wrt timing & logistics. As I am wired for monoblocks I have to check I have cable-lengths to support it.

Phil
 
Mar 17, 2012
83
16
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Cheltenham
You really can not get away from the evil storm god. Monotheism never really caught on in Hi Fi; for some anyway. Perhaps some one will bang on endlessly about Horning or De Vore or even Cerat
 

spiritofmusic

Well-Known Member
Jun 13, 2013
8,259
792
113
E. England
Aiming to have a couple of visitors soon. Blue58 to hear my system for the third time in the new room, and a return visit from Manisandher, after I recently visited him and his sweet sounding Animas setup.

Barry always directs criticsm in ways that practically lead to impvts, I very much trust his ears. I've been banging on about how I feel my system has taken a big leap fwds into greater transparency and neutrality territory. I'm sure he'll let me know if I really am onto something.

Mani has perfected a very commendable sound, our musical tastes and system objectives aren't 180 apart, his take on my sound should be interesting (he did own Zus once, the Druids IV).
 

bonzo75

Member Sponsor
Feb 26, 2014
11,231
1,253
113
London
Even Theresa May accepted defeat today, Marc, after years of trying to convince everyone of the same thing
 

spiritofmusic

Well-Known Member
Jun 13, 2013
8,259
792
113
E. England
I think Ron has the perfect reply to you, Ked
No politics!
 

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