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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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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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[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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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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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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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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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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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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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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[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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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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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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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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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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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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[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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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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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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My man, I am convinced that all you need is time (OK, and money...), and soon you will be dividing that time between full-tilt Beowulf in your lair and spending the ticket money you've saved (clever you!) on La Tache&nbs...
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[quote user="Paul S"]Romy, I am on the verge of an L-pad for my HF ribbons, but in my case I believe it is mostly the MC cartridge response I am wanting to offset, on a case by case basis. [/quote] Hm, this it VERY bad. Fix you cartridge setup, it's ...
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I think it is absolutely not need to discuss how Fostex tweeter sounds as it might sound like anything. Type of crossovering, type of amplification, type of electricity, type of loading, type of time alignment and the precision of time alignment migh...
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[quote user="Romy the Cat"]Ric, I will not be using sand for decoupling. In fact I fill that sand is not good load bearing decoupler as I will have more or less point loading and sand will not work. I will be using sand for damping the horn surface, ...
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I was trying the drivers in my infinite baffle parody configuration and I have to admit that that all of them sounded not good. There is not even a fraction of tone that am loosing and from any other quantifiable subjective point of view the driver d...
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I do not have a final design of my back chamber. The image above is a concept that I deliver to my carpenter – we will go from there to see what we can do. I certainly would like do not overbuilt the back chamber. The notion of adjustability is very ...
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