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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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The 100W+ SE is pretty much uncharted teritory, not to mention Bass SE. Who can speak about the Sound?Only that who tries.Paul, the diodes in Chimera are for biasing purpose, but I agree, here there is no cathode feedback not ot loose power,the whole...
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As I have shared several times here, I happen to regard the Lowther as nothing more than a means to an end. Partly because of this, I have taken my lumps with this marque. Today, I am pleased to have finally made the speakers I imagined 6 years ago...
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[quote user="be"]Hey. I have not seen it mentionned here, have you tried, or even considered regulated dc-current supplies for the heaters?Should have the sound quality of ac-voltage supplies combined with the lack of noise of the dc-voltage supp...
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Thanks, Scooter.I am glad to hear from someone so quickly.I've been an "audiophile" for only 10 years or so. With the Edgarhorns, I am currently using a Cyrus Brenneman integrated amp (KT100). I also have a Yamamoto custom 2A3 (single plates) w...
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[quote user="Romy the Cat"]partially because we do
not know what certainty what constitute “electricity problems” and how sound related
to the thing that we do know about electricity. [/quote]I also do not know.I think Pure Power 3000 is not just a...
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Righto then, I guess there is no reason not to try this, except that one of the original crossovers here is non-functioning (if I remember correctly), so if trialling in stereo I'll have to crossover in Melquiades. Should have the parts here to do t...
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[quote user="Paul S"]The discussion of the abstract nature of the elusive "Hertz" reminds me that individuals and orchestras have long tuned to different "Abstract A", in the "first place". Besides, once you broaden a "tone" into an instrumental "no...
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Ok, I shall stop to annoy lost in frequency responses DIYAudio people and to lay cards on the table, explaining why I consider that for now the Speedysteve7’s installation and his efforts are condemned to end up with sonic nothingness. When I read Sp...
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Part of the reason we call our computers 'transports' is to encourage people to think of the number-crunching part of an audio system in the same already familiar terms as a CD player - because all the same things matter: CD transports vary according...
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Thanks for your help Romy. Have a look at this (barely legible) sketch so we have a common reference:This is Channel B First Stage bias circuit. All is identical to your published schematic apart from R9 which I had to increase to get the other sta...
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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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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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ahh yes, tapped horn is what you would call "close bottom." It has to be designed around frequency response (which is very narrow band). It isn't a problem getting one to go low enough though, and the quality of sub bass produced, smooth yet dy...
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[quote user="Romy the Cat"]I think it might be very interesting to introduce the high-pass filtration for tapped horn and to see how it behaves. It is not only about thermal overload and restriction of excursion. The unloading of none-used bass gener...
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i do it and i did it, but as a newcomer you have to sort out all the infos...not that easy!
[quote user="Romy the Cat"](This is normal, I have written about it many times. Those large bass drivers have a lot of inductance in Voice Coil, the inductan...
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It looks good to me. As you can see I have left plenty of room to add a couple of more channels.The bottom level contains the power transformers and relays. The diode bridges hang from the the middle shelf and the chokes and filters are on the top ...
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Paul, if by error correction you mean frequency correction then I was thinking about +/- the same.i) Active filters; I have zero experience with crossing-over but people who seem to know what theyare talking about all agree that at ULF active is the ...
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After another couple of weeks in X/O Hell, I think I at least have the notches where I want them. Yes, I added another notch filter, because the Lowther response is so ragged that using a simpler curve results in bringing down frequencies I need...
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In the linked thread (at the top of the page) I was pointed out that GM Lab introduced their new Focal Utopia EM loudspeaker. Yesterday the Seattle’s Moron “mikel” posted a picture at AA with the new Utopia EM presented at RMAF 2008.
I saw the pic...
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I think that any line level tube stage can be every much of an expressive tool as any other device in the chain. I am also not sure that the biggest difference between digital and analog is the sampling process.How "transparent" is a cutting lathe or...
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[quote user="Kerry Brown"] A digital crossover with lower bit depth and sampling rate than the recordings it's processing won't deliver maximum sound quality; unfortunately my DEQX crossover is limited to 24/96 so it can't process hi-res digital ...
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[quote user="serenechaos"] The closest I could come to describing the SOUND, when the source was right; (Charles King's Stellavox) & good electricity (JJ filter) was …. being exceptionally smooth [/quote]
Yep, the strange smoothnes was something...
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[quote user="Canuck"] From what I understand, if you have dimmer switches they will present a "noise" problem for anything on the same panel. One thing that could help and possibly significantly would be to do a pony box off the panel and hopefully...
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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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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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Vinyl almost died after the launch of CDs, but today the popularity of vinyl playback is on the rise. Music stores are selling more music available on LPs, and many audiogon systems include turntables. So where are the full-function preamps? Before d...
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When I was a kid we had a "Fluid Drive" Dodge that used oil rather than gears or friction plates as a torque converter. But I suspect fluid viscocity and film strength would need to be kept very consistent for...
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This question had a second bottom so to say. In reality I was not seeking any suggestion: crocodile clipended leads and the chokes are bybassed in few seconds on the fly. Ripping the filters of would be another few minutes. I do have some spirit of a...
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[quote user="Paul S"]...Among after-market things for the Versa was a system of tanks, hoses and filters designed to deal with the moisture and variable pressure that beset the original system, and there were also various after market pumps, and blim...
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