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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Wouldn't you know, theses days people actually market batteries for audio use.https://www.ebay.com/itm/311553605415?epid=2255437073&hash=item488a0abf27:g:U2UAAOSwtbFgB1uK&amdata=enc%3AAQAHAAAA8Op60QGTOo3Y6cjW7KxmXC6ojQDWReASpcB6va12Dw39j9MLTg...
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Batteries are either designed for, or by default are better suited to, specific tasks/routines. Likewise, a given "smart" charger more or less suits a given battery. Caveat Emptor.Paul S...
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I have a long story about battery output and life not coming close to manufacturer's promises, but I will not tell it. Suffice to say, it may well be that you have a defective battery, as it happens all the time; or, it may be that your batteries do...
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What about the extra 30 dB you said your tweeters get at 22k Hz? And how far did you get and where did you wind up with the dedicated ground?Best regards,Paul S...
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About any electric motor can be heard through a hi-fi, including furnaces, ACs, washer, dryer, refridgerators, dishwashers, etc. Isolation efforts include dedicated AC lines with home-run neutral and ground wires. I've never tried one, but there are ...
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Not to over think it, but just tossing it out there: Most tweeters/super tweeters do not have low pass filters to take care of +30 dB at 22k Hz. If your RTA uses a microphone, and your number is above the tweeter's natural output, adjusted for mic cu...
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I don't know about the Puritan "ground filter", or what sort of own problems it might introduce along with purported benefits, but the main idea of the dedicated ground is to have the lowest resistance possible, and no measurable noise. I believe my ...
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Rick, I have been in building/construction for most of my life, and very comfortable installing the ground rod and lead-out wire, etc. Easy-peasy, if you ask me. You can drive the rod using a ladder and a demo hammer that is big enough to fit the top...
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Rick, as I have chronicled at GSC, I have used a dedicated ground for my phono for many years. The Ticket seems to be to keep amp ground wires lifted, and in your case you would connect just the inverter ground wire to the dedicated ground line, and ...
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Awesome, Rick! Perhaps my own standards are too low, but, although I love great electricity, I would be happy to have consistently good electricity. And it sounds like you have a very good shot at this, anyway. Are you using a switching type inverter...
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Rick, that's a whole lotta battery you're employing! So far, I've gotten the idea you want to run your hi-if system with batteries only via a DC to AC converter, and no AC to DC, meaning, you don't want your system connected to the wall at all. Is th...
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Not sure if the big Tesla Powerwall batteries are Li (I suppose they are), but the best battery I've actually tried is a big dry cell, best because it can (apparently) survive and continue to function indefinitely just sitting there for months on end...
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Rick, as I "remmember", the PP output waveform was a "perfect" squarewave, in terms of shape, but it's pulsed. And I think Romy said it worked with a load of up to 60% of "capacity". Does a different regenerator have to "work the same" to "sound as g...
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Agree that it seems more people complain about grid power in US. Also agree that a "good" power supply is just that. Still, it seems like a good idea to have a good power supply as part of a "good" amp (or, whatever...). Some of the "best" amps I hav...
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Robin, it would indeed be nice if "audio component manufacturers" made and sold gear that delivered consistently good sound when used "in the real world". Not to let anyone off the hook, but many (if not most) audio "manufacturers" buy, market and re...
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The way I understand it, power line "regenerators"/noise scrubbers pretty much have to be optimized for a specific load/application, and "off-the-shelf" units are compromized, by comparison. Who actually "optimizes UPS/power scrubbers for audio"? Sur...
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Good imagery, Amir. Sure, this can be pretty compelling for big works. Since we aren't ever going to get "everything", I guess we have to prioritize, and/or "settle" at some point, unless one simply wants change for its own sake. Regarding the "bound...
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Never had a 100kg power supply to play with, but I have certainly noticed that changing the power source affects dynamics (along with plenty of other things, too). I prefer my friend's system's dymanics when "grid power" is connected, vs giant batter...
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Of course we need a definition of "better" before we can say it's better, and I suppose you have that, but it seems to me it is rather a matter of "good enough", whatever that turns out to be. The urge to make a sonic change for its own sake is somet...
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Discussed many times on this site is the "dedicated ground" (aka "bleeder"), which generally includes a driven copper ground rod and a wire to it from the TT, arm, SUT, and/or phono stage. The idea is to get the resistance as low as possible, so the...
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Sounds reasonable to me. There has to be some sort of soft target we're aiming at, with all our mechanical manipulations. I recently got a new clock radio (C Crane 2E) that I listen to a good deal more than I do my Big Rig, although I can foresee thi...
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Amir, this being Good Sound Club, there was some years back a discussion about painterly values as they relate to Music and the Sound of Music. This thread is embedded in the early part of the "It Takes Balls to Shop..." thread, on the Playback Liste...
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I have about 50 old "special" drivers, and I have wrecked quite a few trying to make them "better". It's slow and imprecise going without manufacturing capabilities. I have successfully replaced surrounds and spyder using "factory" or "factory replic...
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Jarek, those are good photos, but I still can't be sure. Are you sure the surrounds are paper, or might they be [partly] thin cloth? Whatever, there's a good chance that any solvent that will soften the dope that's on the surrounds will also soften a...
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Jarek, I don't know your iteration of Tannoy Red specifically, but if the surround is a pleated continuation of the paper cone then you can't be too careful. It often happens that the paper under the coating is no longer very strong, and it can susta...
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Jarek, you've probably already thought of this, but not to leave it unsaid: If there is any chance for cone displacement when you mess with the surround (and/or the spyder), I recommend you first work out some shims to put in the magnetic gap, or oth...
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Since no driver is actually full range, driver selection is partly conditioned by how well it plays with the other drivers it will be used with, and - very certainly - the crossovers it will be used with, also baffle shape(s) and size(s), amps(s), an...
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Sure, contemporary polymer concrete can be made suitable for speaker enclosures or horns. Its biggest sonic benefit is that the material itself is fairly non-resonant. It's just a bitch for a DIYer to make one after another while experimenting with s...
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I admit, if Harley was selling something, I was not reading for that, and I missed it. If the question is how to shape digital square waves, we are still left to solve that problem, as any other, with an identifiable and repeatable solution. I am all...
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Interesting that problems Harley isolated in this case (pits and lands; turntable) were physical/mechanical, utimately "analog", in that sense. I'm glad someone has stayed after it, but not sure how to put this revelation to work to get better Music ...
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