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About BioBrian

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  • Birthday 06/11/1954

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  1. I appreciate your patience again, and obvious care taken to understand the workings of my system. Some snippets appear, every so often, that help complete the picture for me but I confess to having low tolerance to undue repetition, especially when I think it's wrong 🙂. TBH I did feel brutalized by your post the other day, just as I thought the thread had wound itself up neatly. I guess you couldn't leave it, as that might be seen as complicity, so I wasn't surprised it came. Sometimes I'm just too delicate to be playing this internet thing, and for some reason you pushed some real
  2. I'm hoping we can get somewhere without luck. The implications are potentially significant. Any chance of doing a single 24 Hz pulse into 1 of your TD 18s?
  3. Level is not important, as long as it's audible. It will be in the same phase, yes. But my personal interest is in time of arrival, and our sensory perception of that. Whether a single, or randomly executed, low frequency pulse (OK, not a common occurrence) is heard first by one ear (or other relevant body part) is the question. I don't know the research that is being referred to, and suspect it's not entirely relevant to this exact question. I would prefer to have us discuss actual experience of the directionality of LF impulses, as @frednork has offered us.
  4. @frednork has specifically isolated the low frequency component of a track, so we can get ahead in this conversation here.
  5. Therein lies the problem? Of course there can be sudden impulses of low frequency. One now, one 30 seconds later. Another one 19 seconds later. I've been talking about the first hit, the first wave, which is not frequency dependent.
  6. What sort of track did you play? I've been wondering how to find a track with only less than say 60 Hz, but your technology has apparently made that redundant. I'd like to know if it contains sudden impulses, as I presume it isn't just a sine wave.
  7. Love it! Thank you! Should I'll duck now and get back to my therapy.
  8. Much appreciated, Sam. You're right - I did feel the thread had come to a close, after setting up the experiment, doing the hard yards, and trying to understand and express why it was successful. Maybe it's time to sit back and watch again, as the "shoulds" express their need to dominate and discredit the whole phenomenon with the "same old", but that just makes me ill. The "Gestation" days are well gone; I'm really over it, and keen to get on with life.
  9. Intriguing, Sam! I see the alteration of phase as the same as alteration of distance from the LP. So if you change the distance of the subs from identical with the distance from the mains, you need to correct phase (as I think you are suggesting) too. But to what? 'Correcting' distance or phase can only target one frequency, and all the others will be wrong? As I still see it, the only way to retain the "spatial cues", or timing distances, is to place the doubling subs at the same distance, with no electronic mucking around, as in all though this Gestie thread. The LFE
  10. I think that's the case, for sure. I would think the vast majority of systems would be 'sub-sat', where the LFE channel does all the subbing and the 5 or 7 others ('satellites') do the mid and high ranges. That's a sure recipe for destruction of acoustic music recordings. And a more general rave from my perspective: In my case, the front L&R 4-ways are truly full-range, so sending their low bass to the LFE channel removed a lot of their character and just bass into the room. Utilizing the LFE also removed bass from all the other speakers, limiting bass in the room t
  11. Just tried it (again). LFE to Gesties. Nah, nuh. Dead bass. Bass missing from front L & R, even with Oppo XO set to 40 Hz. So much better, telling Oppo there's no sub, and getting the full stereo, in the full-range 4-ways and supplementary subs. Even with 5.1 material. But I'll have to test whether the Oppo does what it's told - might check with another amp/speaker, as it (or the Oppo 83-SE, can't remember) has tried to pull a swifty before.
  12. No changes. Still learning what they do, and appreciating their subtle completion of room frequency response. Currently upgrading multi-channel system, including thinking of LFE sub(s) for the .1 channel... It could be argued that I can use these for the LFE channel. Now they just double the woofers in the main 4-ways, but I probably wouldn't need them to do this in a full 7.1 setup. Bass would be enough in the room, and if LFE bass comes from these up on the wall in a null, then that could well be enough. It'd be just the flick of a switch on the back of the power amp,
  13. Yes I understand that, but the negative part of the waveform is lost by shorting to ground. Would be like trying to fly an F18 with only one wing?
  14. I'm hoping someone can explain this too. Seems that by shorting Pins 1 and 3, that half the waveform is lost. Not only that, half of the balanced preamp will have its outputs shorted. What happens down the line to the speakers (only doing the 'out' part of the waves, never going in) is unspeakable. Like Track 27 on the Soundoctor CD - blips showing the cones only moving out (or only in, if wired out of phase). The Elektra amps now have switchable balanced/unbalanced inputs for each channel which is nice, but I'm unsure what happens inside - would hope there's some sort of buffer, u
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