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Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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[quote user="Wojtek"]In regular off the shelf hi-fi system , be it a total lack of LF in your speakers or the "pinch" of dome tweeters or the midrange mud. Romy like all of us throws money on the problem and he usually chooses well regarded and...
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I do not defend Amir’s
observations and I also do not take his comments seriously. I have no idea what
he is taking about ground loop,
not sure that he has an idea BUT I do
agree that separation of power cables from
each other after the generato...
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Almost all such hum finds its way into your audio signal path through a ground loop, although it is technically possible for AC 50/60 cycle hum to enter from adjacent unshielded power cables. Make sure the AC cable to the phono is well shielded and i...
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[quote user="manisandher"] Amir wrote:Please share more information about your PC.Amir, I have two PCs for purely audio purposes - one for my main listening room and one for my home office. The former was built commercially by Phasure (http://www.pha...
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on Friday I will test CEC TL0X with MAcbook Pro/Berkeley USB to SPDIF Converter.The Berkeley Alpha USB use the Wavelength Streamlength asynchronous code. Mr.Gordon Rankin programmed these codes and sold the patent to some company like Ayre, Berkeley,...
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Thanks all for the replies! Looks like a very risky business.Given the work involved and highly unsure effect, I'll happily skip the shielding. Your comments suggest that the high capacitance line to ground (which the shield would happily provide) is...
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Tweeters are a real mistery. Some should sound great and they dont, and some never will.I think you do need a lot of dynamics even at 10khz in order to get those sparkling highs that really jump out like the real cymbals and other crashing metals! O...
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Thanks for this one Romy, very interesting...it sorta ties together several things that I have been thinking about lately. I guess I am lucky that the Bass Cannons can be run off 9w from the DSET bottom channel and from memory I get about 115dB at 1...
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[quote user="rowuk"]The whole idea of an earth wire is a path to ground if something fails in the unit. In most countries the (metal) case is attached to this pin on the power connector.It is incredibly stupid (and in many countries illegal) to lift ...
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[quote user="steverino"] I'm not surprised at your disappointing results as I have experienced the same with a variety of power filtration or generating devices. Your surmise is correct that such devices work much more easily with AV equipment or com...
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This year is the first winter that I live with this new listening room. Last winter the playback was up and I still was playing with minor arrangements of my ULF channels, cable and a few other things. For many months I do pretty much nothing with my...
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Romy, I probably have it wrong, but this "negative impedance" scheme sounds a lot like "Servo". If it's anything like this, then no, i have never seen this applied to mid-bass, but only to "subs". But how would a very small tube amp "control" a mot...
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can this be anything else but futile?1) If analogue the first thing be the cart, if digital the payer?2) If analogue the phono cable being the MOST important one in the whole system, and could yield some noticeable improvement.3) Has the system got a...
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Yes I do use them for both my Bidat and battery power Idat/M both reworked by John (BTW Idat/M has some performing benefits over the Bidat in my experience). The Synapse cable does have the special qualities mentioned in this thread.I had considered ...
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Here is the general specification for the parts that I used. The selection of the parts implies some liberty of course. It will be your amp after all, not mine - do whatever you wish. In some case when I feel that requirement is critical I will stres...
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[quote user="cb"] Also i stick a 30k resistor in R3 and the results are very good. [/quote]R3 is Milq’s loading resistor and it hardly to do anything with amp itself. Milq has own input loading is floating on the bias chains and it has a ...
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Floyd,
Regardless your preamp uses output coupling cap you would still need a positive supply. Positive supply compensates the negative DC voltage at the amp’s input. Theoretically if you do not connect or disconnect the cable between your preamp an...
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"Jim Hagerman that is posting at this site has an absolutely ridicules devise...The
ridicules in this devise its amassing effectiveness and absolutely
insulting price. In fact over my entire audio life I hardly had so many
benefits for $50 I spent...
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The station that I most listen to is 105.9 MHz that broadcasts from one location 50 miles away at 100kW power and that is detected by 2 FM aerials mounted as a parallel array with rotator and ~ 40 feet of coaxial cable to the TU-X1. T...
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I not juts actively hate this configuration but also actively abhor the rational that made people go for this direction.
The Morons use horrible power amplifiers and sonically impotent speakers and suffer from harsh and cruel Sound. Instead of tras...
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I was so glad to stumble on to this site. It's amazing!I've been a Bidat owner since 1995 and I had the latest mods done by John Wright a year ago. Romy, it takes several months for those blackgate caps to fully calm down, but you are in for a t...
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Jp, I think what you do is wrong. The ferrites that you use on the picture are worthless as they will not be having much coupling between the cable and ferrite cores. You need to block entry to Sansui for HF noise. The noise might enter via power cab...
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[quote user="Romy the Cat"]Last night I have an interesting “event”. I accidently unplugged the PP from power line and did not know about it. Also, that was very interesting: when I put the power cable back to power line then the first minutes the PP...
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[quote user="RF at Ona"]Reading about the sensitivity of your system to electrical power supply problems reminds me of the days when I used to make my own equipment as much for the learning experience as for the final result.One of the mundane things...
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[quote user="George"] Recently I had a brainstorm (very small) and bounced it off Guy (who is a terrific person to talk to) and he thought it would be worth trying. Since I was driving such a relatively long length of RCA cable (thus subject to noise...
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Dominic,
I personally do not believe into nether non-powered preamps nor into autoformers volume controls. In my world as soon a any voltage dropper begin to drive any cable it calls trouble. A volume radiating voltage divider or transformer should ...
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Romy,
I've been storing all my digital music on a computer located fairly far
from the audio system for quite some time now. You've brought up a few
issues that are worth discussing.
1) Storing the digital stream - I assume you mean either (...
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Last night I have an interesting “event”. I accidently unplugged the PP from power line and did not know about it. In a couple hours I realized that the lights on my equipment that all time on are off. So, the PP buttery was drained out. Interest...
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[quote user="drdna"] It is not exactly correct. There is 60 Hz hum eliminated by lifting the ground to the amplifiers. The neutral is connected to the ground prong and chassis in the amps, so I assume it is setting up a loop. However, there is a seco...
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[quote user="Romy the Cat"]Do you personally recognize the sonic impact of bad electricity in your own playback?[/quote]no, not in the sense that i assume you mean it. instead i have my own beef with bad electricity, which i suspect is different fro...
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