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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Anthony, congrats on your amazing progress! I know how hard it is to carve out time for this stuff! I see you are looking for gain from your pre-amp, which makes me wonder if you have been using the passive Placette, as opposed to the active unit, wh...
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Romy,Thank you for constructive suggestions, they will be very useful tonight. I am slowly getting the hang of this system tuning and observation approach that you advocate. I do not have separate identical amps (or one multi-channel) for separate sp...
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Bill, you have made lots of changes in a "short" time period. I hope you kept track of all of it. Knowing nothing about your sound, I can only repeat that Romy said the Dannoy sonic fulcrum was the interaction between FR Tannoy and "passive" Scanspea...
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Hello to all, After following the comments of Romy for some time (have learned a lot, thank you), I would like to ask a question on this subject.This circuit is built with resistors, diodes and capacitors. Could someone elaborate how it can produce a...
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Not Amplitude. It's the rock solid phase linearity. It feels like a brick wall all the way up and down. I haven't looked at any graphs and haven't measured anything but that is my guess. There is no question of the great tone of vintage Tannoy but al...
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When the passive radiator in question is mentioned, are we sill talking about a particular active 10" Scanspeak driver that is not hooked up to an amp? Again, the PR is always parasitic, more or less fighting with the active driver, except, apparentl...
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Another tool used by sound pros is LEAP. The guy who designed my BassZillas (some time ago) used this tool to make the most of a BR enclosure. As for the Fostex (U)HF, the pros tend to correct them digitally, as they need "something". Mainly, did you...
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Mumford,
Let clear first with terminology. You post said about “Incorporating active crossovers into DSET” and I think it is not what you are interested; at least it is not what I am practicing. An active crossover implies a use a dedicated active s...
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I am talking about the fans and the capacitors. I have a PP2000 and the more you load it, the more the capacitors "whine".Nothing from the speakers themselves. It is a pity that cooling is not passive taking into account the efficiency announced. I g...
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[quote user="RonyWeissman"]Attentuators plugged directly into the RCA jacks sounds like good solution for balance control[/quote]Do not forget that you do not need the attenuators but juts one attenuator that you would plug on right OR on left. Also,...
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Hi,[quote user="Genn"]May be it is time to review some basic concepts?[/quote]I am quite familiar with them, thank you.[quote]I'm using today IC based, Accu powered small amplifier, and it reproduces music, without any noise and distorsion from angry...
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Thanks, Bill. The system you describe sounds like my brother''s old home theater surround sound, which did a nice job with 5.1 DVDs, for concerts, opera, and musical theater. I presently use only a turntable or CD/DAC source with my hi-fi, in stereo ...
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Big differences between PS in my giant amps and my DAC, my passive attenuator and my phono stage, TT. PS has to be "good enough" for the application. Maybe "reverse engineered" from the demands end requirements (ie, the mind of the listener). Throw t...
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[quote user="serenechaos"]Did you use LEAP or anything like that, or just cross everything over 1st order as a guess, and tune by ear? [/quote]
Oh, no. I do not use any LEAPs or others tools, no time domain analyses or anything like this – the...
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[quote user="Romy the Cat"]...it is difficult to design an objectionably performing powerful full-range SET without considering speaker, particularly the moment of LF section damping. It is not always the case the MF, HF and LF would require the same...
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I think it is Wiremold part number L10320. At least it used to be.
It has no filters, no switch contacts, indicator lights or passive protection devices and uses hospital grade outlets....
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Gera, are you catapulted from another planet? Are you sure that you want to drive a mid horn with Rowland amp? What kind 6dB high-pass filter used RC network? Why digital filter had an obvious advantage in the attack and dynamics? What does it mean “...
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Confirming our concern about digital crossovers, by Harman international, the parent co. of DBX, today at 11am, and I will quote, "theoretically they compress the sound" and also I will quote, "it is a concern for live recording and not live sound". ...
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hi all,thanks for your interest !yes the frame is curved, HF and MF are //yes there is a phase plug in the bass horn. This cover 80-300Hz.there is a separate infra-bass section, covering 20-80Hz.images of the bass phase plug and the infra-bass sectio...
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first post, hi everybody!plan to build a midbass horn around the gpa 515-8ghp, throat 9,9", mouth 24" x 39,37".945something sq inches.(excuse the strange numbers, metric units in europe)crossed at 500, s2 alu diaphr.(is it normal for the metals to ha...
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[quote user="Jorge"]Hello Anthony,I did experiment with metal tubes for bass in a sealed configuration as you are planning. The weight of them, even made out of thinner than you would like steel, is prohibitive. If you make them out of aluminum pipe...
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I did not make any genratorov . System pictures for a passive, in terms of electricity. Nevertheless, the acoustic power during installation increases 2-3.5 times (depending on the acoustics). Diagram of electrical circuit including a power amplifier...
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Hi Roman,[quote user="Romy the Cat"] the S&B unfortunately does just gain, nothing else) but for the money S&B do OK. [/quote]Then it does exactly what is asked of it, I asked JB to design it for me PERSONALLY as a "wire with gain". I have be...
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Hi, true thats why i wrote designated amp (Active). As a passive xover thats rather difficult, so try a low Q filter type that increases steepness slowly. Like a Bessel (Q 0.585) or if youre skilled calculate your own Q smaller than 0.5 (LR) as a 8-1...
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RomanThe main point is that I like the Bass SET aproach with LF capable transformers and have a potent SET to properly drive whole band and take the amp out of equasion in the future when I learn how to build horn speakers. The system I have is an ac...
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I have not seen it mentioned but I might of missed it. The PurePower absolutely demands shielded interconnects especially between preamp and amp in my experience. No matter how careful I route the cables, I was getting noise or buzzing from the speak...
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Yea. In some systems, mostly trivial / conservative direct radiators in small monitor size, respond to the normal interpretation of frequency graphs very well. With more exotic and uneven dispersing systems it seems to get more difficult. I had it co...
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Yes, the "tape (or "monitor") loop" is where I (and everyone else...) always put them.Why not ask Guy how he would approach it, maybe get one-stop shopping and probably the best results, too, for both the "loop" and the "box".Would "passive" curves m...
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It's dead. Nobody cares about sound anymore. Esp. not about passive listening. The few music lovers left there, are usually immune to their systems, and lack the knowledge to build their own. Most high end audio is a fraud anyway. I agree with Earl c...
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I believe a lot of the issues with earlier DD tables was that they were all servo controlled. That is, a feedback loop kept the average velocity constant. As a musical passage of complexity would slow the platter, the loop would respond w...
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