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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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I got a forwarded email today containing the Lamm Industry’s release notes about their new SET amplifiers.
http://www.GoodSoundClub.com/PDF/LammML3.pdf The good thing in this is that Vladimir is still Vladimir and he did changed since the Rich ...
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Hey Rom etal.I'm entering into unknown and difficult to intuit territory for me.I aquired a pair of very large constant dirrectivity horns EV hr9040 a, a little while ago and i now have a pair of jbl 2420's to power em. I haven't put them to gether, ...
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I have already got a tape recorder and now here is what I am thinking. Since there are quite a few tapes with Dolby A, Dolby B, Dolby c, Dolby S, Dolby SR, DBX and since some of the tapes were not properly EQ I would need an abili...
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Nice job of keeping R off the ribbon. Like you said, who cares about circuit "damping" there, anyway, given the freaking magnet in that thing versus the 0 weight of the ribbon. I'd say it's "damped enough"...It will be interesting to...
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[quote user="Romy the Cat"] I did not expected that the main impediments in the super Milq project will be the organization (sound) of the filters, particularly the high-pass filters. [/quote] After some experiments it looks like the input stage of t...
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[quote user="Romy the Cat"]1) HF channel. A120dB-sensitive hemispheric array of compression drivers, with a dispersion approximately 180° x 230°, sitting deep in the transition slop. First order high-pass.[/quote]Hi Romy,Why such a wide angle? T...
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Amir, it is funny to hear that you like $4,600 Purist but would prefer $10 Belkin SPDIF. The Synapse is basically an effective low pass filter, albeit this seems to help many systems. Like I said up the thread, I have not concerned myself with SPDIF...
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I do not understand from what you said the sorts of problems you are dealing with. What are you using as high and low-pass X/Os. Where and how you cross the drivers can make huge differences in the sound. Also, how did you throttle back Macando to ma...
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I have the CD but didn't get a chance to listen to the B9 effects you mentioned yet, but all the 515Bs and 15" Vitavox I have heard were in larger vented boxes. I think of the dryness you told of as part of pushing a paper driver down in a sealed box...
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Romy,Interesting video. The first thing that came to my mind when you were talking about HF colours and the "clean" RAAL Waterdrop tweeter, is perhaps adding colour to the RAAL. Instead of blanding out the midrange S2 and injecting HF colour with t...
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Yes, a cheap inductive l-pad between OPT and S2 in midrange channel. Interestingly, the frequency response of the first order Lazy Ribbon is remarkably similar to a response you posted somewhere on this site of the Water Drop with third order filter...
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I hear you, Romy, too many other things going on to do this full time, like "the old days". To save time and effort, you could try to "repeat" the original Dannoy configuration (same gear and location) and hear if it is "repeatable". If not, you're d...
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Romy, you have said part of the Magic is the interaction between the Red and the Scanspeak "passive radiator". Could it be that reducing LF to the Red would decrease the "potency" of the intraction between the Red and current passive driver? If yes, ...
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As I am slowly put Macondo back to the business a question come to my heard: how can I make the Injection Channel sexier visibly? As now Macondo is re-assembled and reinstalled but with no Injection Channel sitting atop. I extend no room for argument...
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No, I have not pushed it hard at all: I am just trying to understand it in the mean before I look at the extremes. Though 100db sensitive, the SH50 is designed to handle 1000W or some such absurd power, so it is surprising that it works so well. It i...
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Public - now that is broad. The Public wants easy; not perfect. I would offer a simple two way: 12" paper cones LF with first order low pass [not a horn]. Iwata or Yuichi radial hyperbolic [MF & HF] horn above with first order medium-high ...
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The best midrange comes from compression drivers, it has that minuteness, transparency and dynamics that no other topology can offer; the main problem with them is that they only cover a very specific mid frequency ran...
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Nope, sorry, it does not make any sense for me. The use of Rowland amp I guess is fine if it being use for testing of the filters. Still if you use high-pass for your midrange horn then what resistor does in your RC filter? A first order filter, rega...
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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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Zanon, I do not mean DEQ, but that is one way to do it. D[SET] is another way; and it can be done in real time, by a couple of means.If you actually settle on the mid-field monitor approach, you will want that sort of speakers installed before you g...
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May I at least ass-u-me that you plan to high pass these horns? If so, go ahead and figure that in, too. In any case, just looking at 70', impedance is not the only number you'll be running up, and the last place you want this load is for LF chan...
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Miab, since what I became an expert in cables? I am as much as anyone else – a subject of accidental discovering...
I do not use in Injection Channel any fancy cables. There is not a lot of need for it. The Injection Channel is mixed with M...
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I would like to offers some thoughts about possible avenues for Pure Power 2000 improvements. Those thoughts are no specific to the recent November-December events and have broader generic implication. I initially intended to write it to Pure Po...
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[quote user="Romy the Cat"]The subject of midbass nasal sound is very interesting. In addition to all OTHER aspects that might lead to midbass honk I would like to note that there is one that is in my view greatly overlooked – the precision of re...
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It is nothing to do with Wisdom. It is my principle of application of “cost” as a common sense design tool. I do not bitch that Duelund caps are expensive. I just try to find a rational solution for using them that would embrace their price. My ...
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[quote user="RonyWeissman"]A mid-bass horn for my Altec 515-8G drivers operating from 100-600hz [/quote]
Rony, I think your wish to have mid-bass horn with 515G is a bit faulty. A mid-bass horn for 515G shall be 50-600 Hz. Let me to explain. T...
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[quote user="Canuck"]Romy Have you ever tried a PUREPOWER device feeding something like the Torus RM20 which has a huge transformer and then out to the components? The Torus stores a lot of energy in those huge transformers. Do you feel this ...
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Hi,I am slowly building my own Macondo. I understand why the injection channel is there. It brings some kind of softness that the compression drivers lack. I am using a 12" JBL midbass driver (~100dB sensitivity) in a 50L single driver Marshall cabin...
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Two of my local audio folks asked me to put online my thoughts
process about my listening room. Here are some basics. Yesterday, messuring my
room I got the following response in lower octaves. That is a typical response in
rondom rooms, or wh...
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[quote user="Romy the Cat"]That sucks. I use to have a box of perhaps a dozen of YO186 but I did not see it for a while, pretty much from the time I moved to new house. I was listening today some of my “critical” reference stuff and concluded with ve...
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