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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="guy sergeant"]A few months ago, iirc, you linked to a Canadian? amplifier which seemed to be made as or perhaps could be applicable for DSET use but I can't find the link. Can you remember where its is (or what it was called)?[/quo...
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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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The least offensive result I have gotten from a ported speaker was closest to the yellow option. I built a pair of small monitors with ports on the top purely because it was the only way they would fit. I cannot reasonably e...
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Well, since this thread is about the BMS drivers then what can I say? When I tried the BMS driver I felt that their “absolute tone” ability was at the level of demands of school auditoriums. Read more about “absolute tone” at:
http://www.goods...
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Romy, would you explain / help me better understand how you implemented the HP filter in Melquiades?The schematic shows a series cap after the first tube stage (C3 and C4 in the schematic). I think these are the first-order HP filters, correct?Quest...
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Paul, I would not touch this beast without modeling it firstat least to see if the electron flow is +/- what I'd expect. The eventual sonics are of course hard to predict form the model FFT's. The only hints are some posts at DIY audio and few words ...
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What a great rap! At first it triggered my gag reflex, but it did not take long for my eyes to roll back in my head while I began to run the numbers: how many cords, which models, etc.OK, it filters out certain orders of noise. So how does it do wi...
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I do not think that I might use an equalizer in normal sense; I do not need the full flow EQ option. What I might find useful on some case is to have 4-5 fixed curves and it would be pretty much it. Hypothetically with Macondo and DSET I might write ...
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N-set, have another look at the Chimera "bias", and the sophistocated way the diodes effectively buffer the gain stages, also the way the caps are staged over the tiered ground planes. Also check where the Ls are with respect to the signal. Perhaps...
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I did read your earlier post regarding the P300's use and unsuitability for analog in your system.I am starting to listen only in the early morning, and I can hear The Change as the day gets going and I presume people start switching on their ai...
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[quote user="unicon"]if you could understand the basics about how audio waves especially bass range acts in closed space you wouldnt even bring the name Bass EQit just cures the sound pressure in a single spot(listener) and possibly can not do anythi...
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Thanks Bud!We often underestimate the fundamentally very physical way that sound is produced in our stereo circuits in complex electromechanical ways. I agree with Peter Belt that circuits are affected in ways that can be more adequately explai...
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I really do not what is gong on there and why. Thorsten's comment that line-level crossovers do not act like speakers’ level crossover confirms what I feel and what some other people suggested me. Yes, the reactance of the crossover component, the in...
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Here is the last “real” version of the super Milq input with all filters. The rectors are not common denominated yet, them will be later but it will be already it. I can wait to hear the thing.
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The idea just came to my mind and it is in a way brilliant. It is not implementable in my playback because my Injection Channel is driver by 1/6 of 6ch Milq and because my Injection Channel is high-passed. However the idea is still conceptually very...
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I have already got a tape recorder and now here is what I am thinking. Since there are quite a few tapes with Dolby A, Dolby B, Dolby c, Dolby S, Dolby SR, DBX and since some of the tapes were not properly EQ I would need an abili...
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[quote user="KLegind"]Hi, I have some experience with the 2482. Sure it can reach 300 Hz but only with EQ. [/quote]HelloMy experience is that JBL-2482 can be used without EQ.Example on my system where 2482 is used on a home made "Tractrix like" horn ...
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Paul, I do not think that “before or after RIAA losses” requirement has any merit as no matter what kind type RIAA filter is being used it always will lose around 20dB. I do not think also that there is a “safest path” or “reasonably affordable”....
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[quote user="N-set"] Do you also suggest getting rid of the chokes at the power entry?[/quote] I am surprised that you ask those questions. Who cares what I, you or somebody else think or suggest. You have the input filters in please, when the unit ...
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(feel free to re/move this post to the electricity thread)As the power supply I'd regard everything from the power generator in the power plant down to the actual load.Why the power transformer should be the cutting line? I do hear your voice clearly...
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[quote user="rowuk"]The subject of line filters and uninterruptable power supplies is one that has been pretty free of amateur DIY myths. No one seems to know what makes one sound good or bad and when. The subjects getting attention are IsolationReco...
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N-Set In Tehran properly setup audio systems are rare and most of the time we have not enough transparency to see what PP do with sound.some audiophiles in tehran believe the PP is not good (they prefer AC Line Filters to PP) because they had not go...
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Well, I guess that about covers it, all right!But how do they get the 12AT7 input noise down 147 dB?!?They do mention something about using "quantum particle research", which might mean Bybee filters, or op amps, or both.So is this thing 2-stage ...
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[quote user="Amir"]In loudspeaker and amplifier design we could use more channels to have better result (like 12 channel DSet concept) but i never seen any DAC/Pre to have more channels.It seems i am speaking about moronic idea but it is interesting ...
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Romy, What you say about both series and parallel filters is true. The parallel circuit does eat transient response, but if you keep the minumin impedance higher, it does not stress the amplifier so much. For your 16 ohm woof...
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[quote user="twogoodears"]Also: a tuning fork, the basic, humble tool which makes a full orchestra to play "in tune" is - as applied math and acoustic, a sort-of interpretation of Nature and its Laws - giving 440 cycles (hertz) flat to the trained mu...
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It just ocurred to me to stir things up by posting here about the fact that my own DEBZs (somehow) absorbed 600W peaks during a recent Mahler 3 frenzy. I remember reading somewhere that some owners of the biggest Horning speakers would run them at 12...
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My playback is disarray and distraction for weeks. My preamp is being rebuilt by Guy Hammel and without it my playback feels like a playground of WWIII. Nothing could be connected; nothing can drive anything – sucks in other words. But is it coming,...
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I confess that at one point I tried PM6As in 2.5 cu. ft. vented boxes. Lousy, tipped-up balance and soggy, one-note "bass", contrary to the designer's claims. The only thing good about it was that the box did not add c...
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The subject of line filters and uninterruptable power supplies is one that has been pretty free of amateur DIY myths. No one seems to know what makes one sound good or bad and when. The subjects getting attention are IsolationReconstruction of sine w...
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