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Read the Post in new Window Read the Post in Threaded view  Post #17: Floating the Melq by hagtech on 2006-06-24 
Browse the content of the threads in new Window  Thread: Building Melquiades: Chronicle of full-range in Melquiades Amplifier  44 Replies 
Ah, think of it this way.  Imagine floating the input to your ET step-ups.  Don't ground it.  Let the primary and phono cartridge float.  This is a similar situation but far far more sensitive.  It's a mind game to make it ea...

Read the Post in new Window Read the Post in Threaded view  Post #16: Good thing you don't have a TV by hagtech on 2006-06-24 
Browse the content of the threads in new Window  Thread: Building Melquiades: Chronicle of full-range in Melquiades Amplifier  44 Replies 
[quote user="The Cat"]Nope, I had it floated and grounded and practically have seen no difference[/quote]Yes, I would suspect this in most installations.  I guess my concern is for the rare and unusual.  A floating speaker might be able to ...

Read the Post in new Window Read the Post in Threaded view  Post #14: Re: Amateur things and grounding of secondary. by hagtech on 2006-06-24 
Browse the content of the threads in new Window  Thread: Building Melquiades: Chronicle of full-range in Melquiades Amplifier  44 Replies 
[quote user="Romy"]...what is your view about grounding of secondary in output transformer? I keep secondary lifted in the Super Melq as I have in there 6 phase switching relays...[/quote]Not sure I understand.  You run the speakers floating fro...

Read the Post in new Window Read the Post in Threaded view  Post #11: Re: Melq Box by hagtech on 2006-06-24 
Browse the content of the threads in new Window  Thread: Building Melquiades: Chronicle of full-range in Melquiades Amplifier  44 Replies 
Wow, you sure do pack it in there!  I like the way you silicone the caps and other things into place.  Maybe you can do the same for the bleeder resistors and wiring bundles?  That is, once you are sure it is operational.  Wires c...

Read the Post in new Window Read the Post in Threaded view  Post #10: Re: flashing temperature by hagtech on 2006-06-19 
Browse the content of the threads in new Window  Thread: Training amplifiers in Melquiades Amplifier  16 Replies 
[quote user="Romy the Cat"]I have seen in it in photographic flashes[/quote]Wow, this is news to me.  Makes perfect sense, though.  [quote user="he also"]likely due to the memory in formatting[/quote]Yes, electrolytics are funny devices.&nb...

Read the Post in new Window Read the Post in Threaded view  Post #14: Re: Harbeth by hagtech on 2006-06-15 
Browse the content of the threads in new Window  Thread: A quest for a better monitor. in Audio Discussions  97 Replies 
That's a possibility.  Romy, what about the classic LS3/5a design?  Small monitor.  Sealed box.  jh...

Read the Post in new Window Read the Post in Threaded view  Post #10: Re: Canucks by hagtech on 2006-06-14 
Browse the content of the threads in new Window  Thread: A quest for a better monitor. in Audio Discussions  97 Replies 
Not to offend anyone, but I find the UHF folks to be extremely pro-Canadian.  I think they have a very strong bias.  Don't know where Totems come from, but I'd place a bet it's up north.  Now right after I click on "post" I'm goin...

Read the Post in new Window Read the Post in Threaded view  Post #5: Re: Aha, steel by hagtech on 2006-06-12 
Browse the content of the threads in new Window  Thread: Building Melquiades: Chronicle of full-range in Melquiades Amplifier  44 Replies 
Yes, steel chassis can be both good and bad.  It likes to conduct magnetic fields, so you have to treat things appropriately.  A little spacing under a choke can go a long way.  Otherise you have a 120Hz motor.  I have another tri...

Read the Post in new Window Read the Post in Threaded view  Post #3: Re: damp it all! by hagtech on 2006-06-11 
Browse the content of the threads in new Window  Thread: Building Melquiades: Chronicle of full-range in Melquiades Amplifier  44 Replies 
I was going to ask you about that funny looking damping material.  Then you explained it at bottom of post.  Very clever to use mouse pads!  Lately I've been using cork & buna rubber sheets from McMaster-Carr.  Seems to work m...

Read the Post in new Window Read the Post in Threaded view  Post #6: Re: monitors du jour by hagtech on 2006-06-11 
Browse the content of the threads in new Window  Thread: A quest for a better monitor. in Audio Discussions  97 Replies 
Romy, I thought the Ref3 mm-de capos sounded pretty good last I heard them.  No idea if they are ported or not.  I've been told the crossover is rather simple.  To me, they did a good disappearing act.  Probably expensive.For dece...

Read the Post in new Window Read the Post in Threaded view  Post #16: german currents by hagtech on 2006-06-02 
Browse the content of the threads in new Window  Thread: I need a “second-type” phonostage. in Analog Playback  38 Replies 
"self-matching input impedance "Aren't they trying to say the input is grounded?  It sounds like they're using the current signal from cart, not voltage.  Like the 47 Labs stuff.  This concept has merit, but I never tried it.  To ...

Read the Post in new Window Read the Post in Threaded view  Post #13: Re: God knows color by hagtech on 2006-06-01 
Browse the content of the threads in new Window  Thread: I need a “second-type” phonostage. in Analog Playback  38 Replies 
[quote user="Romy the Cat"]Metol, Phenidone, Hydroquinonee, Glycin[/quote]Musta been a teenage thing.  I never got around to experimentation with my own chemical formulas.  Damn!  Later on I tried using color negatives and printing wit...

Read the Post in new Window Read the Post in Threaded view  Post #11: Phonostage and illumination by hagtech on 2006-06-01 
Browse the content of the threads in new Window  Thread: I need a “second-type” phonostage. in Analog Playback  38 Replies 
Interesting.  I remember getting low contrast levels when using the asa 32 film (I think it was pan-x), but huge grey scales.  Sometimes I shot in tri-x just to add drama.  In the end though, my best prints were from the pan-x using ne...

Read the Post in new Window Read the Post in Threaded view  Post #8: Re: pulled grid by hagtech on 2006-04-10 
Browse the content of the threads in new Window  Thread: Training amplifiers in Melquiades Amplifier  16 Replies 
You could always pull the grid low on the unused triode section.  And ground the cathode.  That would prevent stripping, I believe.  Just bias it to -100V or whatever.jh...

Read the Post in new Window Read the Post in Threaded view  Post #8: Re: Impressive by hagtech on 2006-04-07 
Browse the content of the threads in new Window  Thread: My Analog Playback: the fat lady has sung in Analog Playback  9 Replies 
That's a fine looking analog rig you got there.  Glad to see you switched to tape instead of other belts.  My friends at Galibier and Redpoint are really into it.  They say the taller the tape, the better.  I believe they are usin...

Read the Post in new Window Read the Post in Threaded view  Post #31: Re: Cracking the 6C33C. by hagtech on 2006-03-22 
Browse the content of the threads in new Window  Thread: To drive the 6C33C... in Melquiades Amplifier  65 Replies 
I think you'll have trouble adding a copper sleeve to the power tube.  The thermal coefficient of expansion for copper is probably much greater than that of the glass used.  Hence, the copper will enlarge much faster and break the glass.&nb...

Read the Post in new Window Read the Post in Threaded view  Post #22: reflections versus distortions by hagtech on 2006-03-21 
Browse the content of the threads in new Window  Thread: To drive the 6C33C... in Melquiades Amplifier  65 Replies 
Ok, I am again confused with the terminology.  You seem to relate reflections (indirect sound) to orders of distortion.  That is, 2nd order distortion has something to do with the first reflection of sound.  I see these events as indep...

Read the Post in new Window Read the Post in Threaded view  Post #18: Distortions sound good by hagtech on 2006-03-21 
Browse the content of the threads in new Window  Thread: To drive the 6C33C... in Melquiades Amplifier  65 Replies 
I think there is a definate trend here regarding distortions that cannot be ignored.  Guy, you pointed out some excessive 2nd order harmonics with the Melq bias point.  Hey, maybe so.  I haven't really looked into this tube - but I jus...

Read the Post in new Window Read the Post in Threaded view  Post #1: TAS article: start of the Hi-End Industry by hagtech on 2006-03-18 
Browse the content of the threads in new Window  Thread: TAS article: start of the Hi-End Industry in Audio Discussions  8 Replies 
I finally got around to reading this issue.  What suprised me even more than the horns were some of the comments in the interview / round table discussion they had with some dude from Wilson, one from Overture, and another guy.  Big honchos...

Read the Post in new Window Read the Post in Threaded view  Post #2: Re: Input choke for Low Currents? by hagtech on 2006-03-07 
Browse the content of the threads in new Window  Thread: Input choke for Low Currents? in Audio Discussions  5 Replies 
Hi Cat.  I run the 12AX7s just a hair over 1mA each, and the 12AU7s at 6mA.  With differential pairs and bleeders, it ends up at 39mA on each +/-300V rail.  That works out to 7H minimum inductance at 60Hz, using the standard formula.&n...

Read the Post in new Window Read the Post in Threaded view  Post #12: Re: Not puzzled perhaps, more bemused by hagtech on 2006-02-20 
Browse the content of the threads in new Window  Thread: Magico: Robert Harley’s upperbass mouth. in Horn-Loaded Speakers  35 Replies 
"Why do you care what Robert Harley, TAS or the people from Magico have to say?"I don't understand why you would even question this.  It appears to me to be nothing more that a pursuit of something incredibly simple.  The truth!  Maybe...

Read the Post in new Window Read the Post in Threaded view  Post #7: Horn Flare Termination by hagtech on 2006-02-20 
Browse the content of the threads in new Window  Thread: Magico: Robert Harley’s upperbass mouth. in Horn-Loaded Speakers  35 Replies 
Sorry to steer away from Harley, but have you Horn guys ever tried different flare terminations?  That is, the boundary condition where the mouth and room meet.  I once saw some interesting stuff done on large radio antennas that improved g...

Read the Post in new Window Read the Post in Threaded view  Post #9: 7788, stu by hagtech on 2006-02-18 
Browse the content of the threads in new Window  Thread: 7788 tube mic pre design in Analog Playback  38 Replies 
My Stu never got a reply by the asylum inmates.  Maybe nobody there ever heard of a 7788.  No help.jh...

Read the Post in new Window Read the Post in Threaded view  Post #7: 7788 by hagtech on 2006-02-17 
Browse the content of the threads in new Window  Thread: 7788 tube mic pre design in Analog Playback  38 Replies 
Sounds like a great tube.  Stu just found a bunch in his stash and asked about them on asylum - totally unrelated to this post.  Gold pins, superb construction, etc.  So it must be something special.  Could be great for your mic p...

Read the Post in new Window Read the Post in Threaded view  Post #5: Re: 7788 - love the tube! by hagtech on 2006-02-15 
Browse the content of the threads in new Window  Thread: 7788 tube mic pre design in Analog Playback  38 Replies 
Yeah, so the closeness of the grids results in a higher current gain.  So what?  What is the relationship between gain and sonics?  Are you saying that all high gm tubes sound better than low gm tubes?  And does that include 300B ...

Read the Post in new Window Read the Post in Threaded view  Post #2: Re: 7788 tube mic pre design? by hagtech on 2006-02-14 
Browse the content of the threads in new Window  Thread: 7788 tube mic pre design in Analog Playback  38 Replies 
Why do you suggest that a pentode will "give higher audio resolution"?  What evidence is this theory based upon?jh...

Read the Post in new Window Read the Post in Threaded view  Post #10: Re: Phonostage: Modifications to your design by hagtech on 2006-02-14 
Browse the content of the threads in new Window  Thread: About EAR 834P Modifications in Analog Playback  45 Replies 
Romy,Hi, new here.  Great and very interesting website.  I think a lot of people have misread you, they don't expend the time to actually think about some of the things you have said.  Anyhow, looking at the above schematic (is this sa...
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