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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Bruce Edgar, the founder and designer of California-based EdgarHorn Loudspeakers, recently announced that he discovered a new relationship between his business plan and rules of physics. According to Bruce: “The physics of sound reproduction th...
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Well, it is not necessary a fully qualified urban legend as the problem does take please with fixed based 6C33C but..... only under certain conditions. I have written about it a lot on my site but will very briefly recall it again.
Dima might be cor...
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We know that distance between a listener and live source in a concert hall creates HF attenuation along with adding of reverberations, changing harmonics/overtones balance and so on. Loudspeakers are in a way exposed to the same rules. If we conditio...
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An interesting post, Paul, thanks. It looks like my fear or bass loading of this room were not accidental. If I get this room then it would be even worse in my case. Your have solid slab floor –something that I would like to have. But this house ...
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Funny for in my DSET case it is mostly about a primitive equalization in MF. Well, almost.
I god a few other versions of 2A3, one more 604 and a few 45. I in fact like the 45s, even though with my attenuator wide open I have ~2dB less gain the...
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The new 6-Channal Milq is up and running, I did manage to calibrate everything in the Macondo’s left channel and was listening it for a while. I might report somehow a controversial result. The MF drive with a single stage is incontestable king – it ...
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Here is what I have been thinking for a whale: how bad electricity impacts our long term judgment about the design decisions. Pretend we have a DSET amplifier and a speaker channel and we have a task to load the DSET’s plate properly. The proper load...
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Paul I slightly surprised about your comments. The regulating aerial amplifier tube affected sound very mildly, if ever, at least it was my experience. I had a few different 6AK5 but changing them was not a highly notable effect. I still have left a ...
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I know, I know, I know…
Any person who in one way or other practices horn-loading loudspeakers has a wet dream about bass horns. Here and there people built them. Here and there you can hear the assuring and overconfident statements like: “the...
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[quote user="starboy"]A friend has a fixed headshell model S2 and is about to trade for a detachable;just for convenience but worries if there is any extra sonic merit in the model he alread has? Any idea Mr B____ [/quote]
Obviously the fixed head...
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It is not surprising that the subject of horn is as screwed as the subject of drivers. It is understandable as driver must be made for specific horn loading, not one make drivers properly, so what the horns are made for?
A horn is a very simple dev...
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Similar to the famous sexist tail that women can be only ether pretty or smart the midbass horns unfortunately behave in the very same way: they can be only nicely placed in a room or they can sound good. You want the horn to place in a specific ...
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Well, whatever you do with your loudspeakers of with you whole playback system is kind of irrelevant if your drivers are not right. In my view the drivers are the very much heart of playback but in case of High-Efficiency and particularly horn-loaded...
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Ok, you did experiment with loading
and found that make you MF to idle more sound to was too "in your
face". It is fare but was it delivering better "tactile" sensations. You understand
that less loading of one of your channels should make
you to...
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There is a very interesting subject in Language of Audio – the filter slope. The filter slope is well known aspect in the audio and here is nothing new could be said in there but there a twist in the filter slope. If we are talking about multi-chann...
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[quote user="Thomas Mayer"] I never had a lot of trouble with high transconductance tubes. I use the EC8020 a lot. [/quote]
Stefano, you might look into this EC8020. I never seen it but just looked into the datasheet and it looks very interest...
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Sorry to hear Wally Malewicz passed away. I guess his health was lousy for many years, but the lucky few who got his "tractors" have by all accounts the best cartridge set-up tool available.I ass-u-me you made provisions to adjust pivot to spindle v...
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Ok Romy thanks for advice. I will see about the loading for my shelter, and my cable to the step-up is nothing special. I am going to listen to mono only for next few weeks and see if i find the "same character of sound everywhere" syndrome! I do h...
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N-set, if you have an unused circuit in the apt., then its neutral may be an acceptable ground path (neutral stays "on" even when breaker is "off"...).Re, the phono calibration, I have expounded the SRA at length in the "Vinyl Ceremonies" thread. As ...
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Thanks, Paul.
I never saw this company. I did call today to the guy who run it and had longer conversation with him then I intended. Size and shape wise it was exactly what I was looking for. Unfortunately he does not do matching transformer b...
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Gera,
tuning the amp loading is a tricky part. If you deal tube that you do not know
and the driver that you do not know then there is no way for you to know the
entry point into the game. I think the best way in this situation is not use
what pe...
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I have near friend and he builds amps based on Sakuma ideas. They are nothing but compressed and band-limited. Quite opposite - wonderful tone, even balance, low-level detail and killing bass. His (and Sakuma?) theory is transformers provide optimal ...
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Klaus wrote :
"...maybe i'm wrong, but as far as i see it, the whole thing has to be stiff on the outside. will make the horn in a way to survive a "explosion" on the throat, the pressure will try to expand the horn to the outside, so it should ma...
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Keith,
I do not see any “O, shit!” effect. You went for 505TT/S150 combination and it is fine. Why after reading my comments you developed doubts? It looks to me that if you do have doubts then you did not have enough rational to select this s...
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[quote
user="anthony"]Hi Romy,
So it is time to think about the bass output
transformer in my DSET. My bass channel will be 8 x 25W/8565-00 each side
set in a sealed box and will cover the frequency range below say 100Hz.
These drivers can be ...
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Nice posts Romy and Jan, agree almost 100%. I've heard the Behringer in an originally crummy system and it butchered things completely. The input levels were low, which as you point out, won't have helped at all.On a vaguely related note: I dunno if ...
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KOT, with the ML2s I found very little difference in the sound of various 6C33Cs, but the old Svetlanas certainly "held to spec" better (and longer..). I find the 6C33C to be more "direct" sounding than 845 or 211, but this in the context of a 3-sta...
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Romy, do you plan to float the current, too, or do you plan to keep that constant?Is it correct to say that since all the tubes will see different loads, it may be that they will behave/react/sound differently on the nether end of the same source, or...
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Today is a “special” day in the subject of this thread – today the last waited piece of the projects – the inner-stage transformer will be shipped to me and I will have no more impediments to render the project. However, the intricacy of the pr...
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I load my 901 with 42K that behind my transformer that makes it 68R. It’s given that I always tend to load my cartridges slightly harder: have my reasons. I would suggest to load 901 with ~80-90R. The load of 510R suggests that something is tonally/m...
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