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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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actually I'm from Iran and needless to say we are stock in the middle of nowhere here (sanctions,...) so we weren't able to hear much of the horn speakers, so we started to think we should do it ourselves because we are able to obtain CDs much easier...
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[quote user="cv"]AlloI had a theory that the bug screen was helping to damp horn modes/refelctions caused by a mismatch between the S2 internal flare and the horn flare rate. I have 340Hz flare JMLC horns, which may be expected to give less of a mism...
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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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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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I have been quietly listening and working on my new system. The upperbass horn can be crossed lower than I anticipated, which is great news for me. I was going to have the crossover point of 160hz, but I can easily do 120hz :) The dual tad's will be ...
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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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After trying these reticulated foams for some time now, I ended up with using them only on the JMLC 1400 with the Radian 475 beryllium drivers. I had a smallish bump about where it worked. It flattened out and the sound changed a little. It sounded a...
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For now I'm quite sure about one very important channel - 1200Hz+.
JBL2453 in 550Hz LeClech horn works perfectly for me!
For the lower channel 500-1200Hz I've tried the same driver JBL2453 in 350Hz Tractrix and result is not bad, but not pe...
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While I am waiting for the attenuators I worked on the frame and changed it to a metal frame.It is sturdy and height of the channels can be adjusted in both axis.Romy, may I learn what your crossover points for your channels?My midrange channel is be...
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You may remember that my bass reflex boxes were sitting on top of the carpet. I installed a few days ago, 4 brass spikes under each one, then their foots to sit on, and put them on the sandwich granite bases I made. Bases are 50kg each now!I have als...
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Which values are you after? If its the crossover points, here they are, they ay be indicative for you;dual Tad1601b's in 298lt br boxes - open on bottom to 120 Hz, in a range 90 to 150 Hz ~12 dB (three different settings can be chosen, according to r...
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[quote
user="kodomo"]In my first design, I kept them all in a vertical line.
It had one channel less back then. When I added the 1" throat JMLC 1000, I
decided, as the tweeter operates over 9.6k, the slight misalignment may not
matter. Still, I k...
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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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Thankfully, JMLC chose to use english as the common language for he event, not altogether surprising given the many nationalities that probably attended.JMLC writes:
"N°13 : Stereolab tractrix horn + Vitavox S2 driver
...
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Yes, the crossover looks fancy :) More than that it does the job. The vacuum caps are only for the tweeter and the upper-mid beryllium. Still they are bridged with micas as they wont do much alone. Adding vacuum caps smoothens the transitions and sou...
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[quote user="Romy the Cat"] Make an experiment, and I will simplify the case quite assertively. Take a typical compression driver, cross it at 800Hz, second order and load it into a proper contemporary horn (Tratrix or JMLC) of 300Hz. Listen that hor...
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[quote user="jessie.dazzle"]I realize this is off topic, but I would like to address the issue:Rackish wrote: "...Recently I asked someone who contributes regularly on your forum and has a system 'similar' to yours to come and listen to his system....
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Disclaimer: I love listening to experienced people. However I do not do everything they say. I would like to hear them as it can direct me and save me some resources like time and money and make me think of things I have missed and ...
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[quote user="Romy the Cat"] Make an experiment, and I will simplify the case quite assertively. Take a typical compression driver, cross it at 800Hz, second order and load it into a proper contemporary horn (Tratrix or JMLC) of 300Hz. Listen that hor...
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Romy,
You got it all backwards but thanks for your visual approach to the subject.
I really meant to illustrate the fact that Point Source does not exist in "real life" and that it's analogy with a single driver makes no sense (then there is the ...
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Hi Romy,
I'm Autotech (Lukas Lewandowski) friend who manages technical correspondence and do design part. Personally I'm interested in all horn designs down to 20Hz and I do see some interest in multi-way horn designs from eg. Hungary. IMG_350...
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[quote user="cv"] Well, the Cogent (Steve Schell and Rich Drysdale) boys are building just such a beast: field coil magnet, (possible) permendur polepieces for >2T, Fs 70Hz, throat - dunno, but at least 3" dia, reduced compression ratio relative t...
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[quote user="slowmotion"]I hope anyone interested in JMLC horns read the last four links, where Jean-Michell writes about his reasoning for his horn profile.[/quote]
Yes, Jan, tanks it was interesting. Unfortunately the words means little in ...
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[quote user="Romy the Cat"] Make an experiment, and I will simplify the case quite assertively. Take a typical compression driver, cross it at 800Hz, second order and load it into a proper contemporary horn (Tratrix or JMLC) of 300Hz. Listen that hor...
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[quote user="Romy the Cat"]
...this interesting point has no practical answer. First of all in the case of Rakesh horn what N-Set proposed is not necessary. Those 115Hz Hasqiun-style horns that Rakesh emulates are well dumped with own mass and own ...
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Luc,
I am not ‘lucfm’ and I hope he will reply to you but I would like to pass some of my observation that you might find useful.
In my past when I discovered Fane Studio 8M I went over a number of 5-8 inches. At that time I used AG’s Trio upperb...
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Hi all
The first link, to the musique_concrete website was because there's
pictures of some horns made for the S2 .
I hope anyone interested in JMLC horns read the last four links,
where Jean-Michell writes about his reasoning for his horn ...
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Tonight I finished two
horns at once. One was a shortened Goto S-150 horn that now has a
Fane S 8M, without back chamber so far. Dimensions are now 1.1m deep, 11cm throat, 75cm mouth. It is replacing the Avantgarde
Trio midbass horn r...
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