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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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"Believe me or not but when we made Macondo the appearance was not a concerns of John an me"So why did you paint it then? :-)Seriously though, it occurred to me that the Henry Ford colour scheme for your kit was was quite deliberate, not fo...
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Romy - Not sure if you mean increase the load above 550ohms, which would give you less power, better damping and possibly less distortion (trade off between how much you need to push the tube and the flatter loadline, also I suspect there is dis...
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Allo R,Not to start a pissing contest, but how are they wired (series/parallel?), and with what voltage across them? Something just can't be right; the makers spec is 88db / 2.83V, which is over 1W. Unless it's uniquely smooth room gain with the arra...
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Romy,I make 6 drivers = 95.8 db/W. You get 3db / doubling of the number of drivers ie 88 + 10log10(6 drivers).That's why I'm going with a bunch of Lambda TD15S (which are sort of a cross between the Altecs cone - paper, curved, foam surroun...
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Romy, Can you expand a little more on what the issue with dipole bass is and what it does incorrectly? I'm still not sure I know exactly what you mean (and I've had a look at some of your other comments on the site).What sonic aspects in particular? ...
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Just some scattered points:1) I gather the Acapella plasma tweeters have a catalyst so you don't get the nasty oxides/ozone etc. Got some old ionofanes on the way so will know soon how well they freshen up the room... They are self-amplified so ...
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Morning,I'm not disputing what you heard, but your conclusion that the LF must modulate the tweeter section can't possibly be right. 0.047uF is a -3db rolloff of 34Hz. If you're saying that over 0.68uF was fine, then by implication 0.47uF is not as g...
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I hear you... I've never gone for the school of thought that says, let's correct the inadequacies of component/topology A by throwing in some "complementary" inadequacies in B.
Or, as a feline mathematician might put it, if each of the "sounds" is f...
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Interesting Romy, particularly the "echo" affect and weird overtones with the aircap. I wonder if the thing is picking up resonances and if the impedance issue is responsible for the overtones... signal being modulated by the varying input capacitanc...
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Allo,Well, the divider may certainly be responsible for some softening of transients - in particualr, what values are you using there?Also, the received wisdom is that silver micas are created far from equal; no experience with them myself but I beli...
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Romy, Now you mention the issues here, I am thinking about what the differences in quality might be due to. I notice that you haven't explicitly said which is better, super or regular... so think of this just as brainstorming as to why things are... ...
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Hi Bud,Thanks for the pointers; I already have a pair of vertically sectioned cores wound from a while back, on white nylon (ugh?!) . Not remotely optimal, but if the concept works I will definitely have to try something along your lines. The tip reg...
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Hello chaps,
Another option thrown in there by Bud; always enjoy your posts even if I don't follow them 100%...Let me attempt to barbarically distil what you said into 2 aspects which are
1) The dielectric properties of the insulating materials2) M...
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...I'd sent the Feline an email thanking him for the disc but hadn't seen this thread... I'd wondered why the posts count on the site was creeping upwards with no new mentions of kit, gear, componentry, Melquiades or the like.Well, DUH ...
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Big R, Fascinating as always. but here's a question: If a quiescent current shift of 5mA makes such a huge difference, then surely there is something very wrong, either with the amp or one's perception? I say this without having any experi...
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Romy, have you not seen the Duevel horns? 360 dispersion.Not sure I spelled that correctly; I might be thinking of the beer...It's easier than 48 or 64 tweeters arranged multicells fashion:-OcheersPS ...
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Very good point - I will direct Martin's attention to this. Visually, it looks like he did an excellent job on the 340 Hz horns, and the 160Hz horns will be rolled off at 1k anyway but nonetheless, will see what he reckons. Actually, no need - I just...
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The voices, the voices...Just a word of warning, if you do decide to give this a go, remove the diaphragm first and be sure to have exactly the right size screwdriver - that bolt is prone to flaking...Might I suggest that if Macondo has evolved to th...
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AlloThese weren't quads but ML CLS panels (well, just the one actually, leaning against a chair, clip leaded up ). How's that for even more unethical... To be honest, *I* didn't actually like the sound; found it a bit uninvolving, and muddl...
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Ah Romy, did you not know that the old JBLs, RCAs (and possibly S2 as well) all have an internal flare rate of 160Hz? This is but one reason why I'm asking Martin Seddon to make me a pair of 160Hz horns......just had a look; it may have been 180:http...
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Ah electrostats...I am fairly sure that problem with esls is trying to take them down to low and them not being driven properly. If you actually calculate how much current you need to drive transient peaks into an ESL, it's horrifying. I can't imagin...
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Don't worry Romy, I know exactly what you mean. I tend to discount the opinion of anyone who raves about a system's ability to play back patricia barber. Speaking of which, if I were in her shoes, bunions and corns aside, I'd be mildly...
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Hello Guy,Please excuse the rapid fire response, bit short of time today.1)Your comments about the Io cart are most interesting; clearly it ain't about saturation. Here's another idea: if the domains in the magnetic material limit resolution (leading...
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The point of the field coil is to saturate the piss out of the magnetic circuit so that the coil flux does not modulate the motor. Romy, I suspect that your experience of them may be based on an older drivers where saturation was not the name of the ...
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Well, I have a theory that the rough surface may be helping to attenuate multiple back-forth axial reflections, but from what you say, it may be that it results in - what's the proper term? - irregular as opposed to laminar flow at the surf...
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eyop fellas,Romy wrote: "Here we go! Not we are taking!!! I would not need the S2 tweeter and what it dose now in 400Hz horn is perfectly enough. I would go only for the midbass S2. Something with 6” cellulose diaphragm, low to medium compressi...
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Do you even need a horn to run it at 5kHz? The acoustic transformation's probably done by the time the wave reaches the throat. Or is this more just to shape the rolloff below 5kHz? I once tried a hornless S2 as a tweeter; it was quite lovely but did...
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Honestly, we're gonna have to start calling you Romy "magnetar" Bessnow if you keep changing your mind like this...*My S2s all seem to measure completely differently, will have to get some more accurate and careful measurements done I think with...
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Romy, I'm enjoying this account of Melquiades upbringing. I must ask though: how are you sure that what you are hearing isn't on the recording? Not that I don't believe you, I just wonder if the stuff has been there all along and undis...
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[quote user="Romy the Cat"]
cv wrote:
I wonder if it is the reactive components (blocking caps etc) that are to blame here, seeing as much of the problem is in the lower bass.Chris, what you said made me to think.
Loo...
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