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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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This is very interesting subject.
I expect that tghe new Midbass horns will have somewhere 108dB sensitively anechoicly. The driver is 99dB and the hyperbolic curve has much more EQ then Tractrix and that is more important the EQ that work mu...
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[quote user="KOTriode"] Without regulation, this amp would not work correctly due to its design: DC coupled and fixed bias. The high transconductance will make the bias current varied as much as 50-100ma due power line fluctuation without the reg...
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…and since it is in LL line I presume that it might be right along with LL2 Preamp – not particularly interesting preamp. In other words it is most likely the “positively expected” and “might be interesting” continuation of the L1 and L2 line.
...
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The whole notion of the de Charlus’ quest I find to be very interesting. Charlus feels that only use horn topology and compression drivers is able to deliver “superior” audio result, at least it was his experience. I do not feel that horn topolog...
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[quote user="drdna"] I can tell you already it will work. I have experimented extensively with adding lengths of metal to cables. It works well, but you can do a lot more by fine-tuning the amount of metal and in fact adjusting it slightly from l...
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[quote user="Romy the Cat"] In here is not the value are important but the concept the you block DC not with capacitor but with an “active” resistor that backed up with positive voltage. BTW, eventually if you wish to go “kinky Milq” and have a v...
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[quote user="manisandher"] For the past few months, I’ve been looking for a solution to a problem – how to recreate through speakers the same sound that I get through headphones. [/quote]I very much applaud to the desire to have speakers that do ...
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Ok, the Headphone “Baby Melquiades” protect is over. Well, kind of over as there are some issues still are hanging in there.
A brief summary. The initial idea was to use the Melquiades’ input stage to drive headphones. Unfortunately it did not...
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[quote user="jessie.dazzle"]As a way of forcing myself to see the thing as a whole, I will start by converting this schematic to a 3D CAD model, illustrating each component and its relation to the others (with more distance between the parts than in ...
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This thread has been pretty interesting overall. I've read most of it and would at least like to provide some feedback on the technical side of designing with the 45 and 2A3 DHTs... at least from my personal experience. A few years back I decid...
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Sine I informed public about Melquiades amplifiers I receive many emails from people asking me about the operation points of 6C33C. For whatever reasons people mistakably took me for some kind of 6C33C guru, which is am not. Moreover I could be hardl...
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[quote user="miab"]In my unit there is definately a change in sound running from wall from early in the day to late evening. In the late evening being the better. Before the Purepower this was much more noticeable but to quantify it, the worse da...
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Thank you for the comment on this amp, this is my first time of using the 6C33C tube, I decided to build this amp after reading about the Melquiades, this amp is just a quick experiment on the 6C33C sound, since I have...
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Fostex T 500A MK 2 Horn Super TweeterArticle By Bill Gaw at www.enjoythemusic.com
As most of you know by now, I'm a horny type of guy. While my wife may dispute this, my audio system (actually my second partner) would have to agree as all seven spea...
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[quote user="cv"] I've only heard the 801 in class A2, but I can easily imagine that the 10Y or 801 with nickel output would offer the purest possible sound in the 1k-10k range, such that it is the S2's true voice you are hearing. It's something ...
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[quote user="morricab"]Well Romy, IMO they are not just tonally different they are more tonally correct, ie. they simply have less coloration than other technologies. Just listen to a recording sometime made with a ribbon microphone and you wil...
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OK, here are my thoughts for today. Below is a very simplified schematic of Pure Power 2000 regenerator. I do not know if it is, but I think that it is how it works. I do not think that it is different from any other on-line generator. At the li...
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[quote user="Paul S"]Well, I thought there was a lot of this going on all along, but that we just haven't come up with much that is "universal" [/quote]Yes, my thought is that there is NOTHING universal, but that these choices must be observed in CON...
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[quote user="op.9"]Could you help me understand your biasing scheme with this version? I thought I understood the original Milq circuit - but the only channel that looks like that to me is the D channel. I don't get A and B at all! what is the 50 ohm...
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I do not think that magic was gone anywhere, it was just
hiding behind my many stupid actions. I was able recreate that magical sound but
so far whatever I do to navigate it the weather's need to be sonically I am
shutting magic in the butt. it is...
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I remember when I built Melquiades I detected that quietly of wire that feeds the grid of output stage with bias, quality of soldering or any other minute detail on this wire was very auditable. I also detected that the proximity of this wire t...
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[quote user="cb"] The bias voltage I get on the 6e5p is around minus 4.4v on both the circuits. This is with the inputs shorted. With the inputs connected to adjust voltage to 0.0mvdc, I get a reading of plus 0.4vdc. This is with VR1 set at maximum (...
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Well, they technically not Lpads but juts regular attenuators
even though they connected in “protective mode”. You can go with stabilized impedance
to maintain the high pass filter over the coupling capacitor to work properly
but I do not feel it ...
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[quote user="Romy the Cat"]Well, they technically not Lpads but juts regular attenuators
even though they connected in “protective mode”. You can go with stabilized impedance
to maintain the high pass filter over the coupling capacitor to work prop...
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[quote user="guy sergeant"] In your earlier piece about how to use the S2 'properly' you wrote
"Whatever happens between the 400 and 2,5 is pretty much unnecessary for you garbage. So, get any known to you soft capacitor of 3uF and place it in serie...
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[quote user="Romy the Cat"]
cv wrote:
I wonder if it is the reactive components (blocking caps etc) that are to blame here, seeing as much of the problem is in the lower bass.Chris, what you said made me to think.
Loo...
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The Melquiades give me inspiration to build this 6C33C amplifier. It's on a stereo chassis that has few unique features
- Vacuum tube rectifier separately for Input/Driver and Output tubes.
...
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[quote user="twogoodears"] Yes Roman... I feel pretty like I entered a sort of "cul de sac", tube-wise... I contacted, few months ago, Western Electric USA and they told me that, at USD 750 ea. they have "plenty" of N.O.S. WE 437A... I've been ab...
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[quote user="rowuk"]Amir,In live music, we have intermodulation. Two trumpets or a trumpet and oboe playing together create sum and difference tones that change depending on pitch interval for instance. For music in major keys, this intermodulati...
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[quote user="jessie.dazzle"] Scrolling down to the images of the Lamm ML2.2, I see something that intrigues me...
Four ML2.2s are used to bi-amp the Verity Audio speakers; I didn't know they could be daisy chained by using both the XLR and RC...
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