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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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From Alex's thoughts it seems like one approach might be related to/interfaced with the program itself, such as RIAA or FFRR, etc., etc., even though I think those "recommended guidelines" have been only loosely observed by recording e...
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Too late now for points, but just the other day I tried to imagine your plan. and I was pretty close.Actually, it is a bit like what I have going now; 15" Eminence bass guitarr woofers in a sealed 3 cu ft cabinet,Oris 150 with 8" B&C midrange dr...
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Ok that was a long road to "stick with vertical alignment, and stay away from BMS." Back to compression drivers, and implementation...
If I were in your shoe I would take make as you wish but wish a slight correction:
65Hz Tractrix fro...
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[quote user="Paul S"]Romy, when you mention "dynamic sinking" of ribbons are you speaking of sub-8k Hz use of powerful ribbons like the Water Drop compared to 109 dB efficient compression drivers, or do you notice this dynamic sinking no matter ...
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Good advice, to be sure.I have chosen the most "neutral", "tape-like" MC I have found, but of course it remains a phono cartridge/transducer... Meanwhile, I just checked VTF on a hunch and was annoyed to find that at some point&n...
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Last time we wrote you thought I should focus less on tweeters and more on midbass.I am not done yet, but I have found a very nice midbass solution. Somewhat unorthodox, maybe.I have come to love police sirens! Without having A/B compared it to a pai...
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So, with this horn I got the sound I was dreaming for!Currently system consists of 4 channels:1. RAAL Lazy Ribbon (14k+)2. JBL 2453 in 550Hz LeCleach (1200 - 14k)3. JBL 2490 in first part of own JBL horn (300-1200)4. 12" Supravox in 42Hz 2m long horn...
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I sent an email to Brian asking... also about how far down in frequency their largest mumetal core could go.I see why you want those tap options now - essentially you want to be able to load down the 6e5p but still use all the secondary sections. The...
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Mani at al. I have a paid of zu druids. Running them with 15W amp (d-class) and it is not enough for high level, although it does better than you expect. The soundstage sensitivity measurement was 97dB, but their test did not load the driver correctl...
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No telling anymore how good these amps can get. Today the re-configured phono stage finally "burned in" and I used the ML2s for almost 5 hours. Although I have read that they keep improving as you use them, I was not really...
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[quote user="Wojtek"]It should not be a problem for you to borrow one of those plastic 150-200 Hz horns for your REPS .[/quote]I heard it a couple of times in a different settings several years ago. Although I was interested in the application ...
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Well, FWIW, my Audax LF units started life at ~100 dB and wound up closer to 96 dB to get ~40 Hz from them via ~ 4.75 cu. ft. BR boxes. Computer tuning was very close, only a strip of rubber weatherstripping in the vent opening between be...
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Maybe I'm not following novygera but isn't that what electrostatic speakers already do? I mean the full range ones. I thought some of Magnepan's smaller models only had quasi ribbon drivers also. I agree that it is not likely that one type of speaker...
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Operating a driver in an open baffle will cause front-to-back sound wave cancellation, aka the acoustical short circuit. In addition to this, a plane board baffle offers zero air load to the drivers cone. This is not good. That's why it sounded like ...
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[quote user="jessie.dazzle"]I do not interpret Pham's page to show that he is running more than just one horn system; what I see is an evolution of a system. It looks like, in its latest iteration (under the heading "System Update 9/29/10"), Pham has...
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I tend to think that we are not copying Romy, but more that he has generated a school of thought on audio and yes horns speakers also.I too have a system following some of the Macondo Axioms, but have used all diferent drivers.As with other drivers, ...
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Romy, of course I frame my remarks according to how I "understand" the issue at a given point, ie., dialog. If your response helped me to undersatnd your idea of this problem any better, then it seems to go back to the ...
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[quote user="Romy the Cat"][quote user="drdna"] Try a simple experiment. Connect only one driver at a time. Listen only to the ribbon tweeters. Now listen only to the woofers. Etc. Can you distinguish different heights for the image? [/quote] Of caus...
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Thanks for the detailed answers. I will explain my setup.You are right about the dipole bass correction instead of the injection channel. Since I am waiting for both a subwoofer and the Fane Studio 8M and their horn, I am using the 12" as a b...
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Make the full-range and then you will see where you are.
Still, I feel that for MF channels it is beneficial for do with a good DHT output
stage instead of 6C33C and perhaps it is a good idea to use DHT driver as well.
So, when you strategy your 5...
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[quote user="Paul S"] The "calm HF" effect is something I have long sought but seldom experienced from repro, and I have blamed the amps as much as the ribbons. Mere HF extension is not enough. Hard to say whether the amp or the rib...
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[quote user="cv"]How are you crossing over the SA tweeter?[/quote]
Currently I cross them with second order at 12K, near Bessel Q, but not exactly. I did not play with crossover trying to tube it more precisely. It turn out the my driver was too “fr...
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Ah, those figures seem more reasonable - 30pF seemed a bit low. Well, I'm not sure what you should be on the lookout for - as you say, it's a completely different animal to having a 3uF in line with the S2. What I would suggest, and this isn't ...
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I told before that I have high respect to Brian Cheney (because of multiple reasons) but I do not agree with his loudspeakers, where he tries to use ribbons wider range then they should be... Brian recently announced his new model VMPS RM V60. Since ...
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Hi,[quote user="Romy the Cat"]
I lately have some reasons to think about optimum requirements for SET’s out transformer if the amp handles juts a narrows bandwidth. For instance let pretend that we have 2 monoblock and each of them drive: LF <10...
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[quote user="anthony"]I woke up this morning to have the brightest thought that my DHT issues are probably caused by how I have wired up the filament transformers. [/quote]After rewiring the filament transformers this morning, I have spent all day tr...
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OK, now the SA8535 driver is fully broken-in and well-habituated. I have no idea how the “Stage Accompany” suggests using this driver from 1000Hz! From what I observe, at MF this driver sounds very “flat” and very none-impressive. I have suspicion th...
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It’s a bit offtopic, but:[quote user="Paul S"] I haven't seen anything like this in over a decade, and I don't have the patience to wait until I find and acquire something like this, IF it exists. [/quote]The problem is that it does not exist… Simply...
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Hi, My first post, thanks,
Hello to all the members of this forum, I have old cabins altec, the reference is 870B Speaker System, Serial 892, Number 391916, AL75. The woofer is 420Y Biflex. 15"Specifications
http://www.lansingheritage.org/ht...
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Actually, when the string section has to play ultra softly, they use a mute or damper on the bridge. This is a device that limits the ability of the bridge to pass the string vibration to the resonant body of the instrument. http://www.youtube.com/wa...
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