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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Although the spiritus movens of the whole idea seems to have found thebass solution, the idea continues to live.Thanks to the invaluable help of Stephie B, I've comeback to the GU81M likea boomerang with some progress. There are 3 new things:1) FFT v...
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Paul, I clearly have no idea; I am purely fishing in here.
Regarding use of feedback in my buffer there was an interesting experience with it. Among the buffers that I tried there was two that used feedback: one was a an exact replica of Melquiades...
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Okay... I also downloaded the original Milq SET amplifier PDF and have looked at it in detail as well as the 6-channel adaptation (DSET) and I understand where you're going with it... or so I think. In my particular situation, I've owned two pair of ...
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Here is the idea that I had for the “ultimate bass” for my room. Below is the picture of Macondo one channel as it is now from my listening position. So, if I find a way to deal with the wall edge at my ceiling then I might replace the current 72” w...
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This is normal but it has nothing to do with PP2000. There are zillion way how playback can pick up 60 and 120 cycles ground loops, the PP2000 is just one of the ingredients and from Ground perspective has to be treated no different than any other 3 ...
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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 day with the Purepower is...
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[quote user="Paul S"]Adrian, I agree that SETs generally have issues such as you describe, and moreso the small ones, especially at the frequency extremes, and at saturation, which tends to occur all too soon, IMO. But I have not sourced t...
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Adrian,
what do you see fundamentally appealing in the symmetry of the differential circuits and what the relations between Sound the symmetry? Not to mention that the perfectly symmetric circuits do not exists. I’m very far form the people who coul...
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[quote user="ArmAlex"] Romy, I plan to build Melquiades. But there are couple of questions:1-One of speaker options is Gryphon Trident, it is an active bass speaker so Mel should drive MF & HF only. In your opinion can Mel drive these speakers? ...
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That is one textbook HF ribbon, Romy, long, narrow and naked as a jaybird.Don't be surprised if eventually a certain amount of magnetic "dust" somehow finds its way into that ultra-strong magnet gap. Who knows what it is or where it c...
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Alexd wrote :"...most of them do not sound as good as good quality 16Bits cd transport...""Most of them"... Well you are honest; enough so to admit that some do, though they may not be of your own creation."...Our DAC improved computer generated...
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[quote user="Markus"]Hi Romy,
in another thread you recommended the JBL LE8 as a good driver for the 200-1,000 Hz region. Any specific version of that driver? It has been produced in different variants over a rather long time.[/quote]
Markus, I do ...
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[quote user="Chirag"] Well..my first question would be regarding the application. The big Melq tube is already doing the bass towers...is it not enough current? [/quote]
Chirag, I’m not planning to use this power amp in my system. ...
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Romy wrote:"...The leading idea is to bolt a triangular shape sealed enclosure juts behind the small wall that cover the load bearing beam from the midbass horns..."For a lot of reasons, I'd vote for an alternate placement. You've got that baseme...
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I was rushing when I made the last post. Wanted to share a little more about my thought process and how I arrived at doing another large-scale masochistic audio project. Making a bass horn is a huge risk - the results can vary from exceeding expect...
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[quote user="Cosmos"] Anyway, as the description on our site on second paragraph says, the third 6C33 located at the back, is used as the pass element of the regulator (controlled by solid state circuitry) providing 220V with 100uV of random noise &a...
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By looking at it this looks like a magnetostatic (isodynamic?) design rather than a ribbon. There's a Danish guy who has done good research on the subject: http://www.soundimage.dk/Different-col/Magneto.htm (you can click on "ribbon" for more in...
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Paul, it is unquestionable that there are specific properties that set specific compatibility between audio elements but what is important to understand is that word “synergy” was specifically invented in audio by sales personal in order do not recog...
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Now I re-listen all the things the we try to measure. To surmised everything I have to tell that Dima’s way to looks for optimum operation point of the tube (setting balance for voltage vs. current sufficiency) turned out to be very successful as I d...
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Thanks, floobydust.
There are a lot of interesting points in you post to consider. What speaker you drive with your 2A3? If they are relatively high sensitively (like compression drivers) then did you consider going with a single stage? I think I ha...
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I am looking into building a 45 tube SET amp and I keep reading about how important a good output transformer is. I read that cheaper output transformers like Hammond can be okay for mids and highs, but it will also reduce bass performance. If on...
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My main 6 speakers are modified Edgar horns with 105 dB/ watt sensitivity, and the others are overhead emotive speakers with standard 90 dB/ watt sensitivity. There are two JL self powered f12 subs, and 4 self built subs with a sherbourn five channel...
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Romy, I picked up a pair of FX120 and F120A drivers over two years ago. I initially spent some time with the FX120 in a small 10-liter ported enclosure (similar to Fostex' recommended one but altered dimensions). After many months of liste...
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[quote user="drdna"] I am quite sure it is a ground issue, as it is noise coming from the loudspeakers regardless of source or volume. Lifting the grounds on the amplifiers… eliminates the problem. [/quote] If it so them there is no need to contact t...
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[quote user="Bill"]I don't know how much current his amps pull on turn on but I was running just two of the 1500's with 20 channels of amplification including two large subwoofer amps and 4 Class A SET's and sundry source components turning on all at...
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You have identified the tricky parts -the transistion between the front and back horn as well as the throat of the front tractrix horn. A one to one throat with the front horn works best with my coaxials and a short 1.25" straight 'ring' ...
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Continuing my observation about the Timbres and Audio.From what I said above it is very important to understand that Timbres in Audio are not the photographic density of the colors themselves but rather an ability of a photograph to differentiate...
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Looks like the Red 10's are circa 92dB/w/m as an entire "speaker" including woofer. I've never played with them before, but I wonder how much, if any, SPL is scrubbed from the tweeter by the crossover so that it matches the woofer. Romy, from what ...
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As good as my ULF turned out to be but purely conceptually it is not an ultimate proper playback solution. I have midbass horns runs down to 42Hz and ULF kicks in at 25Hz with 3rg order. In reality does to the geometry of my room and the fact the dis...
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Your initial post reminded me of this[quote user="Romy the Cat"] Markus wrote:I
have recently been thinking about efficiency. Apart from enabling you
to use low power amps, is there really any reason why high efficiency is
better than low or me...
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