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Read the Post in new Window Read the Post in Threaded view  Post #110: New drivers by guy sergeant on 2009-02-06 
Browse the content of the threads in new Window  Thread: Macondo’s MiniMe or about Pilot Acoustic Systems in Audio Discussions  213 Replies 
[IMG]http://i75.photobucket.com/albums/i318/murrayjohnson/Korky-1.jpg[/IMG]I'll start looking!...

Read the Post in new Window Read the Post in Threaded view  Post #22: DHT driving the 801 or 10Y by guy sergeant on 2009-01-31 
Browse the content of the threads in new Window  Thread: DHT driver & input in Melquiades Amplifier  25 Replies 
Driving an 801 or 10Y with another DHT would be tricky. The driver stage would need a Zout of <400 ohms. A 2A3 might do it via a step down interstage although making a good interstage that'll handle 60mA will be difficult. A 45 at near maximum rat...

Read the Post in new Window Read the Post in Threaded view  Post #246: Sinusoid shape by guy sergeant on 2009-01-09 
Browse the content of the threads in new Window  Thread: It’s mad, mad, mad... electricity. in Audio Discussions  1910 Replies 
Maybe it has been referred to previously here but this Kemp regenerator has the facility to change the waveform shape by adding third harmonics.http://www.kempelektroniks.nl/Power-Regenerators/Power-Station-75.aspxIt'd certainly be interesting t...

Read the Post in new Window Read the Post in Threaded view  Post #32: It was just a heading by guy sergeant on 2008-12-01 
Browse the content of the threads in new Window  Thread: Single-stage Melquiades vs. DHT amps in Melquiades Amplifier  397 Replies 
Don't take the 'soul' comment too seriously.  I just needed a heading! I haven't tried enough of the other DHT options to know whether there are better alternatives within that family. However, it has been my experience to date, that carefu...

Read the Post in new Window Read the Post in Threaded view  Post #30: Old valves have more soul! by guy sergeant on 2008-12-01 
Browse the content of the threads in new Window  Thread: Single-stage Melquiades vs. DHT amps in Melquiades Amplifier  397 Replies 
112-71-300B works for me although I sometimes use some 845 PP amps for the lower frequencies.[IMG]http://i75.photobucket.com/albums/i318/murrayjohnson/e96aaf9e.jpg[/IMG]...

Read the Post in new Window Read the Post in Threaded view  Post #12: Mercury turntable by guy sergeant on 2008-11-28 
Browse the content of the threads in new Window  Thread: Dynamic viscose stabilization of turntable’s platter. in Analog Playback  15 Replies 
Visiting the Paris Hifi Show a couple of times in the late 80's I saw a turntable with a heavy platter floating in a bath of exposed!!! mercury. The people running the demo did not look well (grey pallor, lacking hair) and looked even worse the secon...

Read the Post in new Window Read the Post in Threaded view  Post #6: Aqua turntable by guy sergeant on 2008-11-27 
Browse the content of the threads in new Window  Thread: Dynamic viscose stabilization of turntable’s platter. in Analog Playback  15 Replies 
I never did see or hear one of these but I'd be interested to know how constant they were able to make it. "...this was a curious turntable with a viscous clutch-like transmission: a layer of water and glycerine between platter and a fanned motor tr...

Read the Post in new Window Read the Post in Threaded view  Post #3: Long term availabilty by guy sergeant on 2008-11-10 
Browse the content of the threads in new Window  Thread: The short "6C33C Survival Guide". in Melquiades Amplifier  20 Replies 
Is it true that they were only made at one factory and are not made any longer?I realise that not many people are using them (either manufacturers or DIY people) but presumably there are large stocks lying somewhere?...

Read the Post in new Window Read the Post in Threaded view  Post #21: Listening from outside the room by guy sergeant on 2008-10-15 
Browse the content of the threads in new Window  Thread: Omni-directional 'horny' speaker from RAAL in Horn-Loaded Speakers  31 Replies 
I'd say there were fundamental issues in music reproduction which need to be got right (specifically within the design/implementation of the transducers) before worrying about the presentational niceties that omnidirectivity appears to addr...

Read the Post in new Window Read the Post in Threaded view  Post #3: Mullard at Blackburn by guy sergeant on 2008-09-11 
Browse the content of the threads in new Window  Thread: Valve Technology Timeline in Audio Discussions  4 Replies 
A nice 30 minute b/w film about the production of miniature valves by Mullard in Blackburn, England.http://www.techtubevalves.com/about_us/film_reels.phpIt would seem that some of the former employees at that site are to start producing some audio va...

Read the Post in new Window Read the Post in Threaded view  Post #27: Mass Loading by guy sergeant on 2008-09-04 
Browse the content of the threads in new Window  Thread: The Shelter 90X: mystery or mastery in Analog Playback  54 Replies 
Are you absolutely sure that the headshell mass loading you use has not had an effect on the life of this cartridge?I have my reasons for asking but the explanation is too convoluted to write at this moment!...

Read the Post in new Window Read the Post in Threaded view  Post #17: The first mainstream manufacturer to jump aboard? by guy sergeant on 2008-08-27 
Browse the content of the threads in new Window  Thread: The jump-start of loudspeaker economy in Audio News  17 Replies 
http://www.audiounlimiteddenver.com/Focal Utopia EM...

Read the Post in new Window Read the Post in Threaded view  Post #4: A consistent medium? by guy sergeant on 2008-08-07 
Browse the content of the threads in new Window  Thread: The Absolute Sound of Audio Idiocy. in Playback Listening  13 Replies 
There are times when a photograph, however well taken, is not enough. The contemporary British artist Lucien Freud  paints portraits that tell more about the scene and the subject than perhaps a photograph ever could. This interpretation somehow...

Read the Post in new Window Read the Post in Threaded view  Post #50: Apologies! by guy sergeant on 2008-06-06 
Browse the content of the threads in new Window  Thread: The last phonocorrector: “End of Life" Phonostage in Analog Playback  310 Replies 
While the question was somewhat facetious there was supposed to be a serious point behind it.  I experience a similar 'effect' with a linestage I sometimes use. It is quite easy to hear what this stage contributes and initially it is too differe...

Read the Post in new Window Read the Post in Threaded view  Post #46: Interesting development! by guy sergeant on 2008-06-05 
Browse the content of the threads in new Window  Thread: The last phonocorrector: “End of Life" Phonostage in Analog Playback  310 Replies 
Perhaps if you build another phono corrector you could play your TT through that, then through the inverse RIAA then through the EoL corrector then the linestage & power amps etc. Will you be listening to all of your line level sources via ...

Read the Post in new Window Read the Post in Threaded view  Post #18: 330R anode resistors by guy sergeant on 2008-05-27 
Browse the content of the threads in new Window  Thread: The last phonocorrector: “End of Life" Phonostage in Analog Playback  310 Replies 
Isn't 330 ohms a little low as a plate load for an ECC83/12AX7 to be running into?  330K ohms perhaps?You often ask what is wrong with a given speaker installation, I thought you might be doing the same here.  Keeping us on our toes :)...

Read the Post in new Window Read the Post in Threaded view  Post #16: Wrong values shown by guy sergeant on 2008-05-27 
Browse the content of the threads in new Window  Thread: The last phonocorrector: “End of Life" Phonostage in Analog Playback  310 Replies 
[quote user="Romy the Cat"] [/quote]I hope no one tries to build this based on the diagram above.  They won't get much output from it!  If you can't see what I suspect are deliberate mistakes, you definitely shouldn't be trying to build o...

Read the Post in new Window Read the Post in Threaded view  Post #3: Vta adjustment by guy sergeant on 2008-05-12 
Browse the content of the threads in new Window  Thread: Vinyl Ceremonies: Repeatable VTA in Analog Playback  18 Replies 
Did you see this piece Paul?http://www.tnt-audio.com/sorgenti/vta_e.htmlI'm not sure what to make of it. We certainly don't seem to suffer with the issues of poor mains to the same degree over here and I found that I can set up my cartridge so that i...

Read the Post in new Window Read the Post in Threaded view  Post #3: Another long arm by guy sergeant on 2008-05-09 
Browse the content of the threads in new Window  Thread: A use of extraordinarily long arms. in Analog Playback  6 Replies 
The arm pictured above may be made by Rossner & Sohn (as is the turntable) but is definitely a good deal longer than 12".  One wonders when the benefits of better geometry become outweighed by the reduction in stiffness/structural integ...

Read the Post in new Window Read the Post in Threaded view  Post #6: Pads Material by guy sergeant on 2008-04-17 
Browse the content of the threads in new Window  Thread: EnABL: Just a note to awaken all of you peaceful sleepers in Horn-Loaded Speakers  14 Replies 
What are the pads you are applying, ie what material?...

Read the Post in new Window Read the Post in Threaded view  Post #41: DD progress by guy sergeant on 2008-03-02 
Browse the content of the threads in new Window  Thread: Ultimate Turntable in Analog Playback  220 Replies 
Certainly it took Technics a while to sort out the motor control systems in their serious DD machines. The earlier SP10 Mk1 is not a good example. On the Mk2 they seem to have got it right. Even with that there are other issues like the mat & pli...

Read the Post in new Window Read the Post in Threaded view  Post #29: Platter Mass, How much is enough? by guy sergeant on 2008-02-27 
Browse the content of the threads in new Window  Thread: Ultimate Turntable in Analog Playback  220 Replies 
There was a Japanese company called Melco who did some experimentation with platter mass back in the 70's.  I seem to recall that they felt 30Kg was where it stopped making a difference.  The greek ACA president with his flywheel assis...

Read the Post in new Window Read the Post in Threaded view  Post #2: RAAL & Feastrex by guy sergeant on 2007-12-13 
Browse the content of the threads in new Window  Thread: Omni-directional 'horny' speaker from RAAL in Horn-Loaded Speakers  31 Replies 
Its interesting to see that RAAL are now representing Feastrex for many countries in Eastern Europe. I wonder if they intend to create something using both types of driver!...

Read the Post in new Window Read the Post in Threaded view  Post #95: Podium Sound by guy sergeant on 2007-12-01 
Browse the content of the threads in new Window  Thread: How to USE “Resonating Oops” in loudspeakers in Horn-Loaded Speakers  184 Replies 
I have listened to these loudspeakers at 3 different HiFi shows. To me they produce what seems to be an uncontrolled mass of woody & papery sounding resonances. However, I haven't heard them being played in conjunction with a more norma...

Read the Post in new Window Read the Post in Threaded view  Post #2: Positioning by guy sergeant on 2007-11-26 
Browse the content of the threads in new Window  Thread: The mystery of reversed imaging. in Playback Listening  2 Replies 
A musician friend of mine said this"British orchestras tend to have violins (1st and 2nd) on the left, violas centre (usually asleep), cello to the right and basses far right.Many European orchestras have violins left and right, cellos and violas cen...

Read the Post in new Window Read the Post in Threaded view  Post #76: Vagueness by guy sergeant on 2007-11-24 
Browse the content of the threads in new Window  Thread: How to USE “Resonating Oops” in loudspeakers in Horn-Loaded Speakers  184 Replies 
I agree its terrible, but the concept they are talking about sounds familiar and it would seem they'd be achieving some of the effect by adding in NXT panels in some way.They invite interested parties to email them.  They don't seem to be sellin...

Read the Post in new Window Read the Post in Threaded view  Post #74: Commercial Oops? by guy sergeant on 2007-11-24 
Browse the content of the threads in new Window  Thread: How to USE “Resonating Oops” in loudspeakers in Horn-Loaded Speakers  184 Replies 
Are this company thinking along the same 'Oops' lines?http://www.layeredsound.com/index.html...

Read the Post in new Window Read the Post in Threaded view  Post #32: Commercial DSET by guy sergeant on 2007-11-14 
Browse the content of the threads in new Window  Thread: A DSET is better then an expensive SET in Audio For Dummies ™  41 Replies 
Romy,A few months ago, iirc, you linked to a Canadian? amplifier which seemed to be made as or perhaps could be applicable for DSET use but I can't find the link.  Can you remember where its is (or what it was called)?...

Read the Post in new Window Read the Post in Threaded view  Post #6: Acronym by guy sergeant on 2007-11-13 
Browse the content of the threads in new Window  Thread: The last phonocorrector: “End of Life" Phonostage in Analog Playback  310 Replies 
TTH's ?By the way I've heard several 834's not just one.  You are right though, I don't particularly care for what I feel is its rather obvious character.No ET magnetics either, hard to find/hear over here.  I think a just handful were sold...

Read the Post in new Window Read the Post in Threaded view  Post #4: Shallow ambitions by guy sergeant on 2007-11-13 
Browse the content of the threads in new Window  Thread: The last phonocorrector: “End of Life" Phonostage in Analog Playback  310 Replies 
Maybe, maybe not although I'd expect it to be unlikely with a Koetsu, Shelter 901 or an SPU at the front! Not unless they are very different cartridges to the samples I've listened to....
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