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Read the Post in new Window Read the Post in Threaded view  Post #30: Re: JMLC curve, 340Hz horns etc etc by cv on 2005-04-14 
Browse the content of the threads in new Window  Thread: Vitavox’s S2 Survival Guide. in Horn-Loaded Speakers  123 Replies 
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...

Read the Post in new Window Read the Post in Threaded view  Post #3: remotely possible interstage or volume control by Bud on 2005-10-25 
Browse the content of the threads in new Window  Thread: Passive transformer based preamp in Audio Discussions  41 Replies 
actually I agree with Romy, to a degree.... If the amplifier is a push pull device, using my output and input splitter devices of course, then an interstage transformer is a much better choice than rc coupling. Using transformers designed to the crit...

Read the Post in new Window Read the Post in Threaded view  Post #5: Field coil with feedback by martinshorn on 2018-05-14 
Browse the content of the threads in new Window  Thread: New superlative horn build - ESD acoustic in Horn-Loaded Speakers  92 Replies 
It was honestly like "oh a big horn, gotta listen .... nice, who did that, hello, how did you..." .... "lets go outside for a talk". I actually thought to the last moment that they were japenese. Coz majority of eastish industry is, and me as western...

Read the Post in new Window Read the Post in Threaded view  Post #125: Demise of the r2000 home by miab on 2009-10-23 
Browse the content of the threads in new Window  Thread: Midbass Horns and Real Estate. in Horn-Loaded Speakers  247 Replies 
Be very carefull in the advice taken from 'professional opinions'. Be as skeptical of these opinions as you are of audio opinions. In construction, maybe more than audio, everyone thinks their opinion is gold. Even city codes are often incorrect when...

Read the Post in new Window Read the Post in Threaded view  Post #13: Greets, Romy.. I built some 48Hz straight horns... by Jeffrey Jackson on 2005-08-14 
Browse the content of the threads in new Window  Thread: Chinese upperbass horn. in Horn-Loaded Speakers  35 Replies 
first post... but I recognize quite a few friends here.. so, my straight horns... I like them very much.. I built mine similar in style to what Greg B linked, but obviously much smaller.. mine are just under eight feet long (length of a sheet&nb...

Read the Post in new Window Read the Post in Threaded view  Post #21: i had written more by Dominic on 2007-02-14 
Browse the content of the threads in new Window  Thread: Truth stretched out via Feastrex prism. in Audio Discussions  26 Replies 
[quote user="Paul S"]First, I just have to ask: What are the odds that the same AA guy I just referred to obliquely in my previous post turns up immediately thereafter?[/quote]pretty good since he's the only guy who talks about them?[quote ...

Read the Post in new Window Read the Post in Threaded view  Post #40: Expressive 555? by Romy the Cat on 2005-04-15 
Browse the content of the threads in new Window  Thread: Vitavox’s S2 Survival Guide. in Horn-Loaded Speakers  123 Replies 
[quote user="cv"] Note also the correlation between MC stepup sonics and size - I gather the Expressive Tech units are on massive cores...[/quote] Nope, they are not. The Expressive MC transformers  (the actulal transformers) are very smal...

Read the Post in new Window Read the Post in Threaded view  Post #9: 'A great truth is a truth whose opposite is also a truth' - Thomas Man... by Romy the Cat on 2009-01-14 
Browse the content of the threads in new Window  Thread: Aporia - Silbatone Acoustics speaker in Horn-Loaded Speakers  107 Replies 
Joe, I think I would battle it. I would not be so certain. Mostly the SUV sized bass horns are notoriously bad sounding despite of the assurances of the system owners overwhelmed with so common in audio endowment effect. Not to mention that the Stag...

Read the Post in new Window Read the Post in Threaded view  Post #373: Why elephants don't jump rope by jessie.dazzle on 2010-10-11 
Browse the content of the threads in new Window  Thread: Macondo’s Midbass Project – the grown up time. in Horn-Loaded Speakers  455 Replies 
Romy wrote:"...In regular audio we accustom that any loud midbass tone get converted to sort of speed bump. You run a high speed, hit the bump and have your “point of no return”, what you fly in air and you have a generic expectations that the landin...

Read the Post in new Window Read the Post in Threaded view  Post #32: Your rights are maintained by atilsley169 on 2012-06-19 
Browse the content of the threads in new Window  Thread: Andrew's new 4-way horn using Stereolabs stone horns and DIY... in Horn-Loaded Speakers  43 Replies 
[quote user="Romy the Cat"]Yes, it was not “allergy” but already, the benefit of the automated check speller but it is not the point. It is not about lofty standards. This web site is not about offering help or imposing help. I do not mind to help pe...

Read the Post in new Window Read the Post in Threaded view  Post #91: The new power supply for MF channel: the Sound by Romy the Cat on 2008-01-14 
Browse the content of the threads in new Window  Thread: 6 Channel Version of Super Melquiades in Melquiades Amplifier  131 Replies 
Those who flow what is going on with my 6-Ch Milq know that for sniggle driver stage I this revision I went what for non-electrolytic capacitors. I use a mandatory for me input choke with 200uF on PS side and then 100R and 100uF on the amps side to g...

Read the Post in new Window Read the Post in Threaded view  Post #2: The chose of the firewall material. by Romy the Cat on 2007-04-02 
Browse the content of the threads in new Window  Thread: Building “Zarathustra II” amplifier in Audio Discussions  8 Replies 
[quote user="hagtech"]Yes, steel chassis can be both good and bad.  It likes to conduct magnetic fields, so you have to treat things appropriately.  A little spacing under a choke can go a long way.  Otherise you have a 120Hz motor.&nb...

Read the Post in new Window Read the Post in Threaded view  Post #2: Audio Demoronisator AD-2? Why not? by Romy the Cat on 2010-06-28 
Browse the content of the threads in new Window  Thread: New Sonus Faber in Audio News  1 Replies 
Yes, it is true – it looks like a move toward my Audio Demoronisator http://www.goodsoundclub.com/Commerce/AD1.aspx However, I would like to see what and how Fenice does what it does. This new paper MF driver looks interesting. I ...

Read the Post in new Window Read the Post in Threaded view  Post #43: Just curious to know if a field coil ribbon tweeter could be practical by cdwitmer on 2007-05-20 
Browse the content of the threads in new Window  Thread: RAAL “Water Drop” tweeter for Macondo. in Horn-Loaded Speakers  77 Replies 
I'm probably revealing my ignorance by even asking this, but I'm curious to know if a field coil ribbon tweeter could be practical. It occurs to me that if one could be made, it would be a lot safer since it wouldn't be a black hole for magnetic o...

Read the Post in new Window Read the Post in Threaded view  Post #23: ..it was Cogent and the Shindo... by Romy the Cat on 2006-04-26 
Browse the content of the threads in new Window  Thread: Vitavox S2 with Electromagnets in Horn-Loaded Speakers  91 Replies 
[quote user="cv"] Or build your own outer magnetic circuit as you are saying, retaining the S2 diaphragm, phase plug, pole pieces and throat.... [/quote] If you read the thread form beginning then you will see that it was my original ultimate intent...

Read the Post in new Window Read the Post in Threaded view  Post #9: L-9=>Closed box by Joe Roberts on 2010-05-17 
Browse the content of the threads in new Window  Thread: Munich High End 2010 in Horn-Loaded Speakers  39 Replies 
The Western Electric L-9 in Munich was/is an infinite baffle design. The 754B woofers are in a sealed enclosure with a front horn. There is no possibility of cancellation between front wave and back wave of speaker, so I wouldn't call it an "open baf...

Read the Post in new Window Read the Post in Threaded view  Post #36: Horns, fireplace and Vaseline... by Romy the Cat on 2005-04-14 
Browse the content of the threads in new Window  Thread: Vitavox’s S2 Survival Guide. in Horn-Loaded Speakers  123 Replies 
[quote user="cv"]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...

Read the Post in new Window Read the Post in Threaded view  Post #75: Thank you, Haralanov. by Romy the Cat on 2010-02-27 
Browse the content of the threads in new Window  Thread: Vitavox S2 with Electromagnets in Horn-Loaded Speakers  91 Replies 
Haralanov, I spoke with a guy who consulted me during my Electo-Vitavox project. He helped me with selection of core material, deliberated the core and calculated the right coil to keep the core mass optimally magnetized. He has over 40 experi...

Read the Post in new Window Read the Post in Threaded view  Post #103: Here and there.... by Romy the Cat on 2011-04-22 
Browse the content of the threads in new Window  Thread: Bye-Bye, Fane in Horn-Loaded Speakers  108 Replies 
[quote user="Jorge"]I am not using the S2 driver, I have been going the long way testing a bunch of different compression drivers.  Right now I am testing the TAD 2001,  I can say leaving it full range going all the way up, it develops a certain ...

Read the Post in new Window Read the Post in Threaded view  Post #31: Re: The honk - Go figure! by Romy the Cat on 2006-05-09 
Browse the content of the threads in new Window  Thread: Vitavox S2 with Electromagnets in Horn-Loaded Speakers  91 Replies 
[quote user="cv"] But the real reason for my post is to ask:I was thinking about the results you reported and am really scratching my head as to why the FC S2 should sound honky, given that its acoustic geometry is completely unchanged. Any idea...

Read the Post in new Window Read the Post in Threaded view  Post #1300: QK1 or better integrate LCR directly into your grid to audio link by Goetz on 2014-05-07 
Browse the content of the threads in new Window  Thread: It’s mad, mad, mad... electricity. in Audio Discussions  1910 Replies 
What I assumed initially is written on the Nordost page. "The QKOIL QK1 is a load resonating coil (LRC) which generates a passive electronic field that has a beneficial sonic effect on the AC current." ... as we should do in loudspeaker crossover...

Read the Post in new Window Read the Post in Threaded view  Post #22: Switch off one of the stereo channels… by Romy the Cat on 2011-07-31 
Browse the content of the threads in new Window  Thread: Basic guide to advanced audio in Playback Listening  62 Replies 
[quote user="haralanov"] So the tweeter is always needed. The bad thing is it deforms (in 99,9999999999999999999% of the cases) the perfectly round audio window, formed by the midrange channel and "pull" some notes sometimes at its axis. These are of...

Read the Post in new Window Read the Post in Threaded view  Post #169: “The older versions of their speakers”… by Romy the Cat on 2009-09-28 
Browse the content of the threads in new Window  Thread: The most promising “best” commercial speaker in Horn-Loaded Speakers  192 Replies 
This is kind of shit that I hate.  I went to AA and read a person said: “Don't miss the CAR room... That would be Classic Audio Reproduction. But that's only if they are showing the same basic design as last year, which uses modified JBL drive...

Read the Post in new Window Read the Post in Threaded view  Post #209: The new MF channel. by Romy the Cat on 2009-03-24 
Browse the content of the threads in new Window  Thread: Single-stage Melquiades vs. DHT amps in Melquiades Amplifier  397 Replies 
Today is a “special” day in the subject of this thread – today the last waited piece of the projects – the inner-stage transformer will be shipped to me and I will have no more impediments to render the project.  However, the intricacy of the pr...

Read the Post in new Window Read the Post in Threaded view  Post #1: The bizarre magnetized 6C33C by Romy the Cat on 2006-07-31 
Browse the content of the threads in new Window  Thread: The bizarre magnetized 6C33C in Melquiades Amplifier  0 Replies 
I know that I ma a wacco, so extend patience while you read it. I was cleaning my shelves and found a strong alnico magnet that left from my field-coil. Since the electromagnet driver project was over I was about to assemble the driver back and send...

Read the Post in new Window Read the Post in Threaded view  Post #37: Wow, THAT is very interesting comment! by Romy the Cat on 2009-05-30 
Browse the content of the threads in new Window  Thread: Vitavox S2 with Electromagnets in Horn-Loaded Speakers  91 Replies 
[quote user="be"]I just spoke with a guy who have made both permanent magnets and electro magnets for loudspeakers.He said that the reason that electro magnetic speakers have a smoother and more grain free sound, is due to the temperature rise in...

Read the Post in new Window Read the Post in Threaded view  Post #6: New production of RCA 1428 from Wolf von Langa. by Romy the Cat on 2010-08-06 
Browse the content of the threads in new Window  Thread: The African compression electromagnet drivers? in Horn-Loaded Speakers  42 Replies 
In the thread “Vitavox S2 with Electromagnets.” there was plenty of discussion about RCA 1428 driver. Here is more to it:  the Great Vintage Loudspeakers made a new production of the RCA 1428 driver. http://www.kilimanjaro-series.com/kil...

Read the Post in new Window Read the Post in Threaded view  Post #19: Driver 2 by audiofilofine on 2011-07-06 
Browse the content of the threads in new Window  Thread: Ultimate MF compression driver? in Horn-Loaded Speakers  45 Replies 
[quote user="Romy the Cat"]  audiofilofine wrote:are only old obsolete  driver cocktail with homemade ingredients.no measure, no method, no philosophy...nothing , only diy fantasyYes, I do taste some slurp of “diy cult fantasy” in Rulit’s action, t...

Read the Post in new Window Read the Post in Threaded view  Post #59: Care to educate? by Romy the Cat on 2010-02-26 
Browse the content of the threads in new Window  Thread: Vitavox S2 with Electromagnets in Horn-Loaded Speakers  91 Replies 
[quote user="haralanov"] You may not believe me, but the driver start to  roll off (very smoothly) after 14kHz and at 20kHz is at -6dB. I intentionally do not use it so high, because I have ultra light weight alnico paper tweeter: http://www.bgau...

Read the Post in new Window Read the Post in Threaded view  Post #21: The HF field-coil and temperature. by Romy the Cat on 2006-04-26 
Browse the content of the threads in new Window  Thread: Vitavox S2 with Electromagnets in Horn-Loaded Speakers  91 Replies 
I do not know how my S2 driver will sound but I defiantly know that it will have the problem with temperature. Looking prematurely at the driver’s sound it looks like it produce the necessary magnetic force at 2A-2.3A, that heats a lot of this driver...
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