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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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...especially about the difficulty of making a transparent preamp. It seems to be a general concensus.
But I need gain for most of my sources apart from perhaps the FM ...
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Take the best components, the best listening environment and will you have the perfect system, maybe for a few fleeting moments.Everything can be improved, speaker positions adjusted, components upgraded. Take the perfect phono stage, we can ...
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As late as the 1960s every self-respecting hi-fi nut had a "secret recipe" for "speaker dope". My own guru would not give me his exact recipe for speaker dope but insisted that developing the stuff was a rite of passage I had to go th...
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No surprise, the biggest problem when shopping for "suitable" amps is getting a bead on the sound using systems featuring the truly BAD "high end" speakers and ancilliaries. Still, I actually found something that might be acceptable; but units are c...
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I want to let Paul S know that if he found our QC to be not up to his standards in the past, that he give us a second look. Many of our response timing issues of the past few years were the result of time delays between our Canadian personnel and our...
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A lot of people ask me about those drivers and I’ll try to compile my vision about them. I did try most of the possible tweeters: dome tweeters with cloth cones, varies type of hard metal domes, compression drivers with aluminum, titanium, phenolic a...
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[quote user="Romy the Cat"]First of all I need to admit that I do not believe to people who claim that Purepower produces noise. My units are completely silent and I know other people who have completely silent Purepowers. I have no doubts that the p...
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I am of course guessing, as to how you got the sound the way you describe it. This "off-set" might be pleasantly less then what I had in mind. It initially reminded me of an effect by having no impedance correction (Zobel) in a midrange driver, and o...
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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...
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[quote user="rowuk"]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 intermodulation is add...
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It seems to happen often enough that I have some idea of how I want to change my system, broadly in terms of sound, but it takes me a while to figure it out and get it done. I remember quite a few "ambience systems" over the years, including the orig...
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i currently am in the process of obtaining a bidat,so this new thread is very timely for me.i currently use a highly modified audio aero capitole mkII se and modified 47 labs progression dac.i plan to work with john wright to take the bidat dac to a ...
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N-set, I have not tried the AN connectors. And I think the cited "metalurgical problems" relate to ease and speed (and so, cost...) of immediately available, outsourced manufacturing rather than use of the metals.FWIW, the WBT Next-Gen Ag connectors...
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What I have is a subwoofer made by ACI; no information on the amplifier used other than it uses a two prong power cord, no ground. When I hooked it up to the APS 2000 I got a very loud pitched hum. Taking if off the 2000 and plugging it into a...
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I'm a physicist actually :-) I'm denying modern physics every day. Not to deny the string theory one must be a complete idiot: 1+2+3+4+....=-1/12!!!I've made a stupid mistake and decomposed my EMT for cleaning and now, in big painsand with a help of ...
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"... and I do not know if 3A/167M is better than anything else and I do not see why the metal socket is necessarily better then plastic – the socket is not the part of the tube."As you know, the 437A is like an on-steroids ECC83, ALL glass built, no ...
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[quote user="Romy the Cat"]What however I would like to ask you is the subject that bothers me the most: how can you determine that the record is cleanable? So, my question is – how you differentiate the noisy record that might be cleaned and improve...
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I was beginning to wonder if I'd ever get the new listening room checked out electrically and the new system ground installed, etc., but I finished this work yesterday, including a soldered-rather-than-clamped ground wire-to-rod connection. ...
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Well, if cost if no object, why not put everything on those cool SRA stands? Besides, Mike probably uses the most affordable version, anyway...Of course those will not in any case address all sonic intrusions, which include not only structural ...
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[quote user="Romy the Cat"]Today spending many hours with my new regenerator and listening music I could not hold myself laughing as many times I caught myself acknowledging that this or that aspect of sound was exactly how I always insisted it shell...
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[quote user="drdna"] So what are the effects of good electricity of the PP2000? It may be a good idea to look at the frequency response and harmonic distortion of the system to see if filters in the Macondo speaker system may need to be adjusted now ...
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[quote user="drdna"]Okay, today I hooked it up and have spend some time listening. The change in my system was very dramatic and positive. First of all, it seems suddenly like a good electricity day. The noise floor dropped out. The timbre of the mus...
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Using the PP2000 has been a very interesting experience. Immediately listening I am NOT struck that it is the most wonderful improvement ever, which I have said before is a GOOD sign. Usually the seductive sound changes are colorations that are enj...
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[quote user="Paul S"]"Success" equals better except for added hum?[/quote] Well, I am sure I can get rid of the hum, so then it will be all good. In fact, I know I can do that just be unplugging the PP2000. That is not an optimal solution of course.
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Romy:I hope you go ahead with your project of installing the horns in your attic as you are probably the only person who might pull it off, but if my opinion was solicited, I think you would be very ill-advised to do so. Firstly, the costs involved a...
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In this exalted company its probably not up to much but I've not heard anything else demo-ed that makes me want to change. :)Front end: Vista laptop with XXHighend software (best sounding bargain in Hi Fi). Fireface 400 external soundcardDAC/Pre amp:...
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to get worthy advice, perhaps you could share some info about your present system and musical tastes, also what it is you like and don't like about your present set-up, and how you'd like to change it, beyond "flat + extended highs". If you have rea...
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[quote user="Paul S"]Thanks, Scott L. I get the math, and no doubt hearing is believing. Still, I do know for certain that "a driver" can be influenced by a defined amount of trapped air in an enclosure, at least as far as the sound that comes from ...
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Both ABB 20KVA UPS and Pure Power 3000 are IGBT transformerless UPS and the AC output of them is not perfect Sinusoidal .like Pure Power the ABB is also sensitive to AC quality.ABB 20KVA UPS does not isolate Neutral line but the Pure power 3000 isola...
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[quote user="Paul S"]While I've hardly gone out of my way to learn more about streaming digital, the reason for that is the consistently mediocre results in my experience. Really, how does one rate and build on streaming digital in musical terms? So...
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