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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Get in touch with Erik if you're not familiar with volvotreter web site already. His Trax calculator includes CAD numbers for profile drawing.I'm not sure how useful it'll be for your friend's CNC router. Check out www.diyaudio.com and AA for JLH Joh...
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II would like to pass a word of warning about the C-15W driver. I do not know this driver but it looks like it has dual voice coil. This might be a hell or blessing. On a paper the idea sound very interesting but unfortunately when I seen it it never...
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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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[quote user="Horn Savant"] I think it's about the same as free-air resonance - backwave to entire basement. Precedent: pre-war theatre horns(open rear like Shearer/ERPI)(unlike post-war reflex tuned designs like Altec A4)(I don't like reflex boxes - ...
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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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[quote user="DERRICK"] Although I think that Romy has voiced some fair criticisms (bearing in mind that he has not heard these speakers, I am sure that he would moderate his opinions if he were to hear them. [/quote]
Derrick, you might be wr...
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There's a big difference in 40 - 400 and 90 - 400 Hz. 40 - 400 might also be stretching the bandwidth which will be horn loaded? (FLHs by nature are narrow band, 40 - 400 is over three octaves...) And, besides the coloration Romy mentione...
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AlloWell this could be very interesting.... the Melq driver (at lower voltage) direct coupled to a 6C33 cathode follower run at low voltage, high current. Vincent looks like he's running about 80V 500mA, though in this case you'd need to use a r...
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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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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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Ronnie,
Arranging the driver in a line array is a fierily straight forward thing. Also be advised that the arrays will less likely work across a short wall, and you need to use a long wall. Generally it is imposable to advise anything as any rooms a...
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I really do not what is gong on there and why. Thorsten's comment that line-level crossovers do not act like speakers’ level crossover confirms what I feel and what some other people suggested me. Yes, the reactance of the crossover component, the in...
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So what's wrong with the 6SN7, apart from the high prices fetched by good ones? If building a 2A3 amp for personal use, it seems a likely choice. I do not know the 6E5P, but I do love the tone of the 6SN7, and I especially like it driving...
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Snubbers are more effective when there is no inductor - just a diode/capacitor rectification. That's when they become useful. To snub out the ringing caused by leakage inductance. Keeps the "buzz" from coupling to other areas of the...
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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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The idea just came to my mind and it is in a way brilliant. It is not implementable in my playback because my Injection Channel is driver by 1/6 of 6ch Milq and because my Injection Channel is high-passed. However the idea is still conceptually very...
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Jordi:As another paralyzed (I have a problem in my leg), deaf (problem in my left ear), coma (I take a downer everyday for my anxiety problem) and nearly unemployed (my 2 self-employed business barely covers our household expenses along with the tuit...
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Cybernetic phase blah blah blah...I (barely) managed to resist commenting about those pathetic little 4" drivers huffing away in that long narrow box, but I can't pass this one up!Just the buzz-words alone; it's got to be a translation thing!Too abso...
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Oops... Ok, I admit it, I was up all night with an Excel-based profile generator.I wrote :"...I will pass on carbon purely out of financial considerations... At 40€/m X 100m, we are into the sort of cash that I'd rather put toward real...
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Romy,
Thank you for sharing the link!
The second part is better!
Scooter
We only use the Beringher for bass under 100 hz, driven by the main amp.
We tried a lot of different solutions, including analog active xovers, the DCX is cl...
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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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Hi Romy,Your findings are interesting, I expected TL0 and PC with Linx16 digital output to be close. What digital output did you use on the PC at that time?What does Linx16 card do in your tuner recording set up? Do the digital A/D signals only ...
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[quote user="Paul S"]This $5 discontinued Belkin blue cable may be as good a piece of gear as I own, I kid you not. Among other things it does a great job of limiting noise without screwing everything else up. [/quote] Exactly, it acts in a way as a ...
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The paranoia has long since set in: I am convinced that career record shoppers have already gotten to and picked over everything any place I am likely to think of to shop. I very rarely find anything really great. But it does happen occasionally.Ho...
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Lets pray to God to create more and more of these designers, brands etc. As in shortage of good comedians around the world they supply enoughmaterial to keep us laughig.Read this one which was wrote by Paul Messenger of HIFICRITIC April-June 2010...
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Looking at what's currently easily available, I was reminded once again how desparate the SS amp situation has become. Of the offerings I saw, I might consider (in no order of "preference") Halcro, Herron, Edge, Ayre, Lamm, or the Pass Ale...
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Romy, I suspect that 200 Hz high-pass will be too low for that driver, even 2nd order, and almost certainly with just 6 dB roll-off. I think more like 500 Hz with 1st order, and might still require the coil.Yellow-type drivers take on and ...
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I got today the Fostex F120A with all latest and greatest modifications on it. I put is in a temp .7 cu feet box with pretty much open back to see what the Fostex will be all about. I drive it from a bad consumer SS, composite-chip Hitachi amp from 8...
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The powerful PassLabs are incredibly bad amps and Mr. Pass well knows it. PassLabs has a series of very low power, SS, class A, single-ended amp and they might be interesting. I personally never had them and I do not extend a lot of trustworthiness t...
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