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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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I juts was pointed out today that PS audio has some interesting ideas out. The transport: http://www.psaudio.com/ps/products/description/perfectwave-transport?cat=audio“…. can read WAV files directly off a DVD … “That is good, can it read the .AIFF, ...
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[quote user="drdna"] Oh no, after all, you haven't even said anything about how it sounds. I suspect that both the Avicenna and the PP2000 will be equally great. However, since you mentioned Dima was thinking of making this into a commercial product ...
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Well, you see, the outer dimensions of the mouth of cause an indications of low end response and by objective evaluation of it is easy to estimate horn’s bass numbers. However, it is very far from “sufficient” assessment. A few years back I completel...
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Stuck,
You can NOT stack coils in series to get a “distributed half order crossover”. To make it “distributed” the first and the second first-order filters should be decupled. For instance the first filter might be at line-level and the second at th...
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[quote user="N-set"]I'm well aware of your discovery. But I find it somehow a cheap trick. This is a purely irrational feeling, absolutely irrelevant for you and your system. [/quote] I world not call it irrational, in fact it is very rational and I ...
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[quote user="N-set"] That all will give 5 stages if I'm not overlooking some posibility: 3 filtering stages, with the first one bypassable, the driver being at the same time the last filtering stage [/quote] It is 3 stages total not 5. You do not nee...
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CJ Yes I have assessed AC polarity in my system.Romy says "I took today my large
3kW isolation transformer and place it between my dedicated line and
PP3000. I lost my lower bass, simple as that. "Speaking of isolation transformers, I have not h...
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Ronnie,I do not know any. But the major question is why such a crossover is necessary. Obviously it requires 3 amplifiers and if so then the filters might be built in the amps. It one needs it for system prototyping purpose then if is fine but the de...
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OK, I have conceptualized what I need for the tweeter amp. It will be MilqEZ – the same Milq one with 6C19P at output. I will use the Super Melquiades power supplies but the HF channels will host own last caps of the filters and own bias of the both ...
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[quote user="N-set"]just a minor tech remark (feel free to ignore): the big-ass elco is theoretically still well in the picture. 10uF will have 320Ohm@500Hz, which is a fraction of 20Ohm R+3mF elco.[/quote]Jk, actually it is not exactly accurate.
As...
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[quote user="RonyWeissman"]Romy, would you say that placette is especially sensitive to electricity to function at it's best(sensitive in relation to other equipment I mean)? My unit is 110v and I am in 220v world, so I am using a step-down trans...
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Sorry, I couldn't resist the header...Electricity was OK today and either the X/O parts are already breaking in or I had a "lull" in the expected parts shut-down. Anyway, I actually wound up seriously listening to some serious music! Even without f...
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[quote user="Paul S"]For the Reps I will use a 2,200 Hz notch filter for its peak[/quote]Paul, why don’t you try to fix the problem of the Reps driver instead of notching it? There is a reason for the peak and I do not consider the problem could be s...
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I already have some PY500 (it's a sign =))) ) and I have 836 too.I read about Malquiade amplifier threads.So it seem peoples on this forum like horn speakers (I love them too) and are looking for fast transient response, it's exactly what I like.But ...
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[quote user="Lbjefferies7"] Having said that, the 15 Commandments above look like a fine solution-based pre-amp...and the title reminds me of Mel Brooks as Moses. [/quote] Yes, it was exactly my point of reference. [quote user="Lbjefferies7"] A p...
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Hi All, 103 or 103R + mass loaded SME headshell + 3012 or a 3009 + Seiki 1500 + hagerman opamp phono stage (good only with select parts and battery power) or an EAR 834 (with some mods) and some old Altec mic t...
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Something new, probably a reliable unit (the Glaess Audio showed sometimes problems with their plastic parts, rollers, filters.....)Klaudio Ultrasonic Record Cleaning MachineVery comfortable, no plastic and important: You only need distilled water (c...
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Dear Romy,I have one of these machines. It is located between my digital source machines and a Lavry DA-924 dac. It is a machine designed for use by the mastering industry. I use it at home as part of my sound system. The reas...
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If the RCA 1443 the same as 1428B but without the field coil then it might be even more interesting than 1428B. As I understand that those prewar driver had phenolic diaphragms that generally shall have tendency to be a bit soft with low order filter...
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I have been quietly listening and working on my new system. The upperbass horn can be crossed lower than I anticipated, which is great news for me. I was going to have the crossover point of 160hz, but I can easily do 120hz :) The dual tad's will be ...
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I miss the ancient "apologia", but who has time for ity these days? For those familiar with this gambet, consider this blast preceded by an "excuse" that somehow justifies both itself and what follows. I am too tired to bring these thoughts to ...
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Since I last posted there has been some progress to my indoor and my outdoor systems. Indoors I have added a pair of tapped subs. I must say that I am quite happy with these. Of course they are not as good as full size front loaded horns but still a ...
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Gordan, you may be aware that I have blabbed quite a bit about the Lowthers at this site. The problems with getting the best from the Lowther are not really that different from optimizing other drivers via networks and other range-limiting strategie...
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[quote user="cv"]Little suggestion should all else fail - you could have a rudimentary phase plug machined that would give you the same (or similar) compression ratio as the original but only one annular exit path. This might preserve the driver char...
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[quote user="skushino"]"The top response of the upperbass channel is challenged. I do not know why it is – a wrong driver, a wrong curve in J-horn or wrong made filter… " That sweep mirrors what I hear - specifically tepid and weak upper bass in the ...
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Romy, it is of course "yes and no" situation. I thought it will be understood by presumption and it doesn’t need to be mentioned at all (but since it is Audio for Dummies section – it seems it needs to be mentioned :-) ). So - Yes - if it is done rig...
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[quote user="Romy the Cat"]I am sorry; I do not follow what you are saing. I see no relation between a need to use a crossover with DSET topology. The Cat[/quote]What I am thinking is that with full range amplifier, you must use a speaker level cross...
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Yes, steel chassis can be both good and bad. It likes to conduct magnetic fields, so you have to treat things appropriately. A little spacing under a choke can go a long way. Otherise you have a 120Hz motor. I have another tri...
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Well, another page of my saga with APS regenerator is turned. I got the updated APS unit. It kind of “works” as I redefined the definition of word “works”. Under normal circumstances I would walk away from it but there are some moments in my “bad ele...
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Head today to another local audio guy who listen to my new
configuration. The reaction was fascinating. He was asking: what the hell I had
done to midrange? Of course, I did nothing, but the question was very accurate.
A lower mid-range changed ve...
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