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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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For those seeking convenience or the plain lazy there's an interesting and very affordable gadget from Van den Hul:
POLARITY CHECKERWorks without a battery, thus is always ready for use !
Its liquid crystal display safely senses and indicates the v...
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I wouldn´t talk about "wrong polarity", rather about "dislike of the resulting harmonic spectrum". Wonder how the result would be with phase-correct FIR filters for the RED....
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[quote user="haralanov"] According to a friend of mine, who has a lot of experience with GM70, this tube starts to sing only with (very high quality) interstage transformer coupling. He told me that when it is used with coupling capacitor (as is the ...
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When the RED has 12dB x-over and the Mocando is all 6dB, then you have addition in the treble and subtraction in the bass ore vice versa. Impulse spikes will always have right polarity, since the RED is 10dB down. If one recorded a track with the RED...
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"It is way beyond the sophomoric solutions like... AC polarity."From that remark one may deduce that the writer has already tried this solution and found it wanting, or has not tried it but dismisses it out of hand, or doesn't know what he's talking...
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...anyone here had heard or used this device. Does it look like it will accept the range of BSO files I'm reading about?If we're unsure, I could contact Paul and find out. But that's a bit outside my expertise...One very nice thing: It has remote-con...
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"Meanwhile, I suppose we mostly tend to think of "phase" as a 180 proposition, +/-, either/or." Not I, sir! Phase is a matter of degrees. Polarity is a total flip, which is why it's a far better word for the two conditions under discussion.So let's p...
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[quote
user="rowuk"] A preamplifier shall be modular - the ability to insert
n quantity (maybe 20?) of input cards on a backplane (for phono MC/phono
MM/line level/Balanced/Single ended/TOSLink) as well as be configured for
multiple outputs. Why ...
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...there is a third: The two versions are in opposite polarities, meaning that one will sound better on his (or anyone's) fixed-polarity system. And no telling which!This is quite apart from any possible problems (and they are rife) in conversion....
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Well, if you're gonna try the DSP, then just do it. All the best PA systems do it. If you have the equipment to test and verify, you MIGHT get lucky with running opposite polarity. But - if you believe it - all such problems can be solved with DSP...
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Our (late) friend Clark Johnsen would not let this rest, lecturing about both power and audio signal polarity.https://positive-feedback.com/Issue1/cjwoodeffect.htmBest regards,...
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Hi,[quote user="Romy the Cat"]This subject of digital crossovers became quite popular during last few years and many audio-people give up and go for a simplicity and painlessness of digital crossovering.[/quote]Well, digital X-Overs would appear to o...
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That why I said in the very begging on that poor Michael Fremer can’t escape himself. That feeling that he has is very intrinsic characteristic of the type of matter he is. As you have learned in your elementary school: any two substances that have s...
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and tracing the polarity back to your electrical service can prove useful, even more so if you have 3 phase power. I’m sure this has been covered but I’ve been away a while....
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[quote user="Romy the Cat"] rowuk wrote: A preamplifier shall be modular - the ability to insert
n quantity (maybe 20?) of input cards on a backplane (for phono MC/phono
MM/line level/Balanced/Single ended/TOSLink) as well as be configured for
mul...
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Clark, How sad that I didn't know this "nothing" 15 years ago (including yes the effects of polarity and phase), but I'm always the last to know. And how strange that following the logic of this "nothing" (and this thread) has suggested a number of...
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This may have been mentioned already. . . if so, it escaped me. But here's the thing: Each component has its own AC chassis leakage characteristic. This can be measured, and lining every component up by the same polarity produces less noise & hum...
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OK, after some experiments I did find something that reduced dynamics what Avicenna was on line. Avicenna has two power transformers. First one is a low voltage (6.3V/1A) transformer to feed Avicenna’s distortion analyses, oscillators, frequency PLL,...
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[quote user="drdna"]Looking again at the EdgarHorns, the placement in the room seems nearly optimal and they are now properly time aligned. Looking at the phase of the individual drivers and listening to each of them individually revealed that ...
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We all agree that acoustic polarity (phase) and AC polarity are important. Stop already.
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It kind of sounds good, but is all based on this false idea that you can cancel out Total Harmonic Distortion in your loudspeakers with "negative polarity" THD in the amplifier. It treats THD like it was a discrete variable rather than the sort of ...
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Ok the Macondo is all done in new room, including the bass channel. I am uploading the calibration check sheet not as much for you but rather for me. I have been keeping it got years and constantly am loosing it, now I will know where to find it. BTW...
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[quote user="Romy the Cat"]The re-charged cap works fine but changing the cap polarity by re-recharging is while it handles the signal is not a very good idea in my view. All that dialectic in the cap needs to be re-polarized – it sound too unattract...
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[quote user="Ronnie"]The next big problem with sound here I think is a difference in sound level between upper bass and MF/HF.Upper bass seems louder (and ought to be). Would you help this electronics-handicapped guy to pad down the upper bass horn w...
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Dave used to show (off) this system in the largest room available at CES. Lines formed and IIRC reservations were taken. I auditioned it twice and each time was the best BIG SOUND I had ever heard. Only, he wasn't careful about correct polarity.
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There is a relentless prejudges that some subjects could be cursed and therefore they bring bad fortune.
“What might be less fortunate in audio then just persistent horrible sound?” – rhetorically asked Dan D’Agostino, the CEO of Krell Industries. ...
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And thought it was in my head.Not that I have infra-woofers ...When listening to the individual parts of my system I had noticed that when the 75 hz horns were played by themselves there is a bloat in the 100 hz region that goes away when the subwoof...
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[quote user="Paul S"]Romy, I seem to remember J. Peter Moncrieff doing something like this a couple of decades ago, and he eventually "explained" it much as you have just done.I wonder if this approach is +/- doomed to a sort of "hazy" presentation, ...
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Thank, Paul, interesting links. What is necessary here is to do some critical listening with the idea proposed above. It would not e any measurements but just subjective listening. I am not a huge to of do it on line level and I think the speaker le...
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I have never used EL34 in triode, but I think it is not hard to find acceptable examples of this fast, reliable tube, and with conservative bias it should let your 6E5P "shine through", if that's what you want. Nothing like 811, 845, etc. in this re...
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