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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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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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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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In Macondo/Melquiades thinking, random process means random result - and that is exactly what happened with Dunnoy. A random driver was placed in a random cabinet with a random passive radiator and random cabinet damping. All subsequent attempts to r...
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Yes, Jarek, I can see that, now that you mention it. Basically, then, it appears it would just eat low end, based on Q vs. other active speaker perameters. So, what would be the "theoretical benefit" of the added passive radiator be in the case you d...
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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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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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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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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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[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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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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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. There is an army of people out there who would swear by a complete transpare...
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Martinshorn , that for feedback, as I always preach:
the bad result during audio show does not mean anything, only good results
count. You see, there are zillion reason why during the show the sound might be
horrible. The inadequacy of the people ...
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In the past there was such a concept of full-function preamplifiers that included MM and MC inputs. With time such devises die out and nowadays it is VERY difficult to find a full-function preamplifier generally and a good sounding full-function ...
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Hi,[quote user="morricab"]As to the best transformers souding more transparent than the best resistors, I'll believe it when I (don't?) hear it. You claim to have heard this but I most certainly haven't. [/quote] Well, the claim is no...
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.…as everything was discussed here before.[quote user="chaos"] …when i tried your recommendation with s2 and 3uF cap my "basshorn" refused to roll of;-) [/quote]
This is normal, I have written about it many times. Those large bass drivers have a lot...
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[quote user="tuga"]Hello,
I have owned a TDA1543 based Kusonoki style (passive I/V, digital filterless, non oversampling) DAC for almost two years.
You can have a look at the measurements here.
I find that this kind of implementation (Kusonoki...
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I think clearing this up this may be of benefit to other users who are building multi-way horns.
Let's say I've got two horns mounted on a frame. There's a high horn
above and a mid horn below and they are physically time aligned, meaning
th...
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CATEGORIES: 2100 - Mid and mid-bass cone transducers 2200 - Low frequency transduc...
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[quote user="rowuk"]
Impossible. A passive radiator can NOT change its tuning frequency on the fly. It is a Helmholz resonator - one single tuning frequency. It is also NEVER in phase, it is always late as it takes several cycles to ...
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[quote user="Paul S"] http://app.audiogon.com/listings/omnigon-full-function-tube-preamplifier-phonostageLooks like a serious effort that has been kicking around for a while.What tubes are used? Are they twin triode, like 12AX7 or - more likely - 692...
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[quote user="N-set"] While I agree that they are typical "full of nothing" boxes and in no way I'd like to defend anything connected to them, butI doubt that the SUT-to-grid distance is such a critical layout parameter: 1) this wiring is within the b...
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...to obsess about speaker wire. Thinking about this a little more I realise that my preference for foil cables has always been in relation to speakers with passive crossovers. DSET is much more simple, the amplifier is driving the transducer direc...
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[quote user="Romy the Cat"]fiogf49gjkf0dI am observing an interesting and surprising fact – I am begging to like my active Marchand crossover. I did a number of modifications to it and it looks like the parts are broken-in now – it does sound very pl...
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As the builder behind these horns, I can answer some of your questions. It's true, I was primarily focused on the woodworking/building side, and now I'm experimenting with amplification and crossovers. I can't speak authoritatively on those subjects...
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Decoud,Though I have a pair of 8Ms, I did some searching around for alternatives just to make sure I couldn't find something "better".Its not really a kosher approach, but my research was centered on vintage alnico drivers, origin...
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Got today the parts and finalized the “perfect” Bessel passive crossover for my new channel. The coils are regular air-core 2.5H and 7H, the caps are Theta 10uF and the small wirewound tuning resistors that kills ~1.5dB in the channel. When I pu...
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It was not so long ago that the Super Milq was a twinkle in Romy's eye,and now it has come to the point he is a strong proponent of DSET (not to be confused with DH-SET). I am always a big believer in the power of topology. I was thinking about...
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I think Clark Johnson while he was doing his typical promoting of potions that would make hairs to grow on CDs was once pitching some kind of sheets with excellent EMI/RMF shielding. It is possible that EMI/RMF become a subject only when two or more ...
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Thanks Rowuk,I have used resistor switches before. In this case it's for a studio mixer so I want potentiometers. I'll look at the Alps stuff, thanks. I realise that question might not be received as "advanced audio practice" but it fulfils my object...
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