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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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I really do not what is gong on there and why. Thorsten's comment that line-level crossovers do not act like speakers’ level crossover confirms what I feel and what some other people suggested me. Yes, the reactance of the crossover component, the in...
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[quote user="Romy the Cat"]
Romy the Cat wrote:That sucks. I use to have a box of perhaps a dozen of YO186 but I did not see it for a while, pretty much from the time I moved to new house. I was listening today some of my “critical” reference stuf...
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Hm, I do not know men, but it des not work. Over the last few years I have tried the ordinal metal diaphragm 4 or 5 times and not with the Super Melquiades it is the most successful try but I still feel than it is not the sound that I would like to g...
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I was replacing transformers in the Super Milq HF channels and while I was doing it I decided to perform a minor maintenance on the amp. One of the amp’s fans developed a “flat” in it bearing and created a very minor “step”. I order a replaceme...
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[quote user="hagtech"]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.&nb...
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[quote user="morricab"]…. putting the attenuator AFTER the gain stage has negative consequences for the sound….[/quote]
Well, yes and no. In the new 6 channels version of Super Milq I will be use 2 stepped attenuators: for Injection Channel and for ...
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You are correct about the load matching, for the Super Mild LF channel a half-Ohm of loading change bass quite dramatically. Still, the idea was to make this SET completely without any intentionally implemented feedback. It is juts not necessar...
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This week I will be trying to address why the Milq midbass is clipping. This is very interesting one. Currently the Melquiades LF channel uses an output transformer 700R to 5R or 11.83 to 1. I thought before that I have much lower ratio, like 5:1 bu...
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[quote user="jessie.dazzle"] I bought the ML2s to use as a development/reference tool while constructing this horn system. The idea being that I would first use them to dial in the horns, and later as a reference, to which I would compare and evolve ...
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I have been contemplating for a week if I need to drain the power caps in my new revision of my power amp. The benefits to live the voltage in there is the cap continue formatting what the amp of off and it minimize the need to break-in or to train t...
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[quote user="hagtech"] I did bandwidth measurements at 1W. …. I should plot both 1W and 6W bandwidth responses. [/quote]
I always feel strangely disturbed when I see people specify SET response from 2Hz to 150kHz. Here is a practice out ...
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The more I conceptualize my view about tweeters the more I like sound of my playback without it. The last night there was a San Francisco broadcast with estimable Tilson Thomas on podium and I was shocked with stunning SFO’s tone. As many times I hea...
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Last night I was listening Zubin Mehta’s recording of Bruckner’s Symphony No.9. It was his first recoding from 1966 with Vienna. I am not a big fun of this performance all together but it has spectacular first movement. It played superbly slow and s...
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Chris,
when I got those large 7Hz-1kHz transformers I soldered one of them in my regular Melquiades and listed what it did. Besides all necessary bass benefits I decided to see how plate current would behave if I have no limitations for core satura...
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The name of the post I took from the 32th chapter of M. Bulgakov’s Master and Margarita, so from there will be the epigraph for this post:
“Gods, my gods! How sad the earth is at evening! How mysterious are the fogs over the swamps! …So...
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[quote user="peter foster"]The UPS units are being used in their normal way, as line interactive. The voltage waveform supplied by the Powerware 5115 is a sine wave. This is described briefly in the manual and was important information fo...
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[quote user="Antonio J."] I really can't understand how a company selling a power regeneration device priced well over 2000 or maybe 3000 USD could send you 5 units and being al them "defective". Did I miss anything here? [/quote]
Nope, you do not m...
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For a casual observer it might appear that I am constantly fought with my ULF, finding and loosing better and worse configurations. It might be so but I have a very strong sense of objective of what I would like to accomplish. I want to reinstat...
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Over the course of the last year I have been gently harassing my transformers-savvy surrounding trying to evangelize them into amorphous core. They stubbornly and perhaps stupidly resist. Some of them not…
During the last few months I was tal...
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Jim, I did try the anti-phase transformer in the secondary but I felt that it did something to sound. I can not do it on primary as I have the pate coil for the first stage sitting on the same transformer. Regarding the sweet spot of the 6C33C - I ha...
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[quote user="Romy the Cat"] Make an experiment, and I will simplify the case quite assertively. Take a typical compression driver, cross it at 800Hz, second order and load it into a proper contemporary horn (Tratrix or JMLC) of 300Hz. Listen that hor...
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Chris,
What I most concern is that my pursuing to fix the HF channel I make myself similar to zillion audio Morons who run across Audio like wounded in the ass animals and keep evaluation components, elements, cables, soldering and defectively of th...
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Guys,
Thanks, for your help with all my HF channel frustration.
The saga is not over. The latest update is the following:
The “secured” Cubes 950 (1000pF and 500pF) were placed between the Milq’s HF channel and the result was dissatisfying. The so...
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Eventually the right channel of the last revision of the 6-Channel Super Melquiades is complete. It has the new dedicated power supplies for single-stage amplifiers, the 600V Schottky rectification for 200V line and 1200V Schottky for 400V lines, the...
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This weekend the new 6-chenal Milq is not finished yet design-vise but functionally is already “there”. The amp was good enough to play with other 3-chenal Milq. Firstly for the last month I was able to listen full stereo from Macondo…. I spend some ...
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Splitting the Lamm ML3 thread: http://www.goodsoundclub.com/TreeItem.aspx?PostID=3595
There are some people who worship direct-heated tubes and attribute to them some ventures (like absent of higher harmonics and a special micro-fineness). The...
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[quote user="hagtech"]I have not tried this tube yet. It might push the limits of the tester. The 6.3V heater current supply is nominally rated at 5 amps. It might be ok to push it to 6.6 amps. I have to think about this, make...
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[quote user="floobydust"] Integrating multiple amplifier sections and drivers is always a challenge. Doing it with different topologies and OPTs adds some additional complexity due to the difference in response characteristics. Crossover design...
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[quote user="Romy the Cat"] anthony wrote:I am often drawn to the
super-clean sound …. I do not think that use the term of “super-clean sound” in
the same way. Vienna Philharmonic does not have “super-clean sound” from
the perspective of most of ...
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[quote user="Romy the Cat"]Anthony, I do not know what you new buffer is. A few notes. The difference between sub 10R and 300R of output impedance is significant for the load you have (Milq) between your new buffer and your 10Y preamp. The type of th...
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