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Read the Post in new Window Read the Post in Threaded view  Post #21: better shot showing the rear chamber... by Jeffrey Jackson on 2005-08-17 
Browse the content of the threads in new Window  Thread: Chinese upperbass horn. in Horn-Loaded Speakers  35 Replies 
Hey Romy... you could be right about the ALE's.. I certainly did like them, but when I went back to that familiar recording it was definitely shelved down low.. it would be easy to assume that I thought that they were "lightweight" because I had...

Read the Post in new Window Read the Post in Threaded view  Post #6: Re: Exceptional loudspeakers drivers: 18-inchers by Knightcrawler on 2006-07-06 
Browse the content of the threads in new Window  Thread: Exceptional loudspeakers drivers in Audio Discussions  34 Replies 
The Aura 1808 had free air resonance at 24Hz and required enormous sealed enclosure of 14-16 cu feet.  Wilson Audio used the Aura 1808 in their unfortunately-ported XS subwoofers and soaked from their relatively small enclosure an extra 19dB...

Read the Post in new Window Read the Post in Threaded view  Post #13: Well, you need to read a whole book. by Romy the Cat on 2010-05-17 
Browse the content of the threads in new Window  Thread: Munich High End 2010 in Horn-Loaded Speakers  39 Replies 
[quote user="el`Ol"]But when the frequency where the dipole acoustic short circuit "kicks in" is clearly below the Fs of the driver, everything "dipoly" that can happen are rear wall reflections with the wrong phase, and that danger is also reduced b...

Read the Post in new Window Read the Post in Threaded view  Post #7: Speed, control and SET harmonics by Paul S on 2008-03-19 
Browse the content of the threads in new Window  Thread: “Harmonic Speed”- friend of foe? in Playback Listening  6 Replies 
I also find SET bass to be the overall best I have heard - at its best, and this has been, as you observe, when the amp is well within its comfort zone.  And this seems to remain true even when Z out and speaker load "matching" are har...

Read the Post in new Window Read the Post in Threaded view  Post #1: Thoughts on midbass horn approach by noviygera on 2018-08-06 
Browse the content of the threads in new Window  Thread: Thoughts on midbass horn approach in Horn-Loaded Speakers  2 Replies 
I have identified a direction for my next speaker system. Whether it is a good one or not is a different topic -- I think it's a good one because I've lived with my current horn system for 10 years and have since developed an understanding of it's st...

Read the Post in new Window Read the Post in Threaded view  Post #72: Differences by kodomo on 2019-06-17 
Browse the content of the threads in new Window  Thread: Designing and building a 5 channel horn loaded (looking for ... in Horn-Loaded Speakers  73 Replies 
I have 2nd order crossover both on the upper knee of the ob bass section and on the lower knee of the midbass section. My measurements show phase response and the summed spl is as good as it can get. Have you tried the direct servo technology or do y...

Read the Post in new Window Read the Post in Threaded view  Post #22: One of two ideals by noviygera on 2019-06-18 
Browse the content of the threads in new Window  Thread: The IDEAL horn system in Horn-Loaded Speakers  27 Replies 
Number one, that I'd like to run by you guys due to it's simpler nature and closer to reality execution is the idea I have been thinking about. No first hand experience with any of this.Say we use something like altec 1505b multicellular horn that sh...

Read the Post in new Window Read the Post in Threaded view  Post #26: This morning I woke up horny by Romy the Cat on 2010-11-14 
Browse the content of the threads in new Window  Thread: Macondo’s lowest channel. in Horn-Loaded Speakers  150 Replies 
[quote user="Romy the Cat"]Anyhow, I did the measurements today and what I saw shocked me. Of the ULF sections has nice 20Hz at MF level then they have +12dB at 60Hz level. That explains everything but it also absolutely clearly indicates that the se...

Read the Post in new Window Read the Post in Threaded view  Post #55: Pre-manufactured box speaker by Romy the Cat on 2014-07-03 
Browse the content of the threads in new Window  Thread: Michael Fremer Continuums… in Audio News  54 Replies 
[quote user="steverino"]I agree that the published curves don't look bizarre for a box speaker. [/quote] Hmmm, I would like to note that my reference to "given topology" did not imply the  "box speaker". Even a multichannel box speaker might have opt...

Read the Post in new Window Read the Post in Threaded view  Post #37: Injection Channel response vs. Main Speaker... by Romy the Cat on 2007-05-12 
Browse the content of the threads in new Window  Thread: How to USE “Resonating Oops” in loudspeakers in Horn-Loaded Speakers  184 Replies 
[quote user="Paul S"]You have mentioned that you want a much larger enclosure for your oops unit.  I was then wondering if you aim to merely broaden and/or lower resonant response or if you planned to in some way tailor resonance as it rela...

Read the Post in new Window Read the Post in Threaded view  Post #6: Lack of the rear wave by CO on 2007-10-29 
Browse the content of the threads in new Window  Thread: The Macondo’s Upper Bass Channel: what is next? in Horn-Loaded Speakers  30 Replies 
[quote user="Romy the Cat"] CO wrote:If you havent already, why not explore the Infinite baffle concept? Or a long terminated back chamber for that matter. Current drive should also be very good on the lower registers. I did it. Any situation ...

Read the Post in new Window Read the Post in Threaded view  Post #21: Do your own experiments. by Romy the Cat on 2011-09-24 
Browse the content of the threads in new Window  Thread: Constructing LF modules to the limits in Audio Discussions  54 Replies 
[quote user="oxric"] I have always felt that if I went for a vertical array of 10" drivers, I would keep the drivers closer spaced than you do in your 'Dunlavy' made enclosure. Based on the 110" height of the tower, I see that you would be doing this...

Read the Post in new Window Read the Post in Threaded view  Post #1: Woofer cone materials and size -- some obseravations. by noviygera on 2010-12-02 
Browse the content of the threads in new Window  Thread: Woofer cone materials and size -- some obseravations. in Audio Discussions  0 Replies 
Let's say we all have a midbass horn that plays down to 80Hz. I know some of us are special, so their midbass horn plays down to 40Hz. But still.What to do for the lower frequencies? Sealed or Infinite baffle (that's two good options). Now we need a ...

Read the Post in new Window Read the Post in Threaded view  Post #9: Very, very interesting. by Romy the Cat on 2024-05-16 
Browse the content of the threads in new Window  Thread: My new “New” listening room, 2024 in Audio Discussions  31 Replies 
I spent many hours listening and experimenting, trying to change the signature of my mid-base channel. Everything that I'm trying suggest me that I am in at very right direction but I am still not server I would say freeze the system and do not t...

Read the Post in new Window Read the Post in Threaded view  Post #18: Deep in the well of lower frequencies by Gregm on 2008-04-17 
Browse the content of the threads in new Window  Thread: The loudspeakers for a powerful SET in Audio Discussions  48 Replies 
[quote user="Paul S"]Greg, I have written about my "DEBZ" speakers several times at this site, [/quote]D. Olsher's Basszilla -- of course! Sorry, Paul, I forgot.[quote user="Paul S"]If I were to do the DEBZ concept right now, I would tune the BR...

Read the Post in new Window Read the Post in Threaded view  Post #14: Re: hardfoam cones by KeaAudio on 2010-07-04 
Browse the content of the threads in new Window  Thread: Magico Mini or Jonathan Valin maxi? in Audio Discussions  21 Replies 
Hi there el Olyou are on the right track. (I know your post is quite old now, but I just found it today when I googled my own site).I am the one who invented the Polyepicell cones of Kea Audio.I bought the patent papers that Mr Podzus made over 60 ye...

Read the Post in new Window Read the Post in Threaded view  Post #42: Right amount of wrong notes? by Andy Simpson on 2009-04-22 
Browse the content of the threads in new Window  Thread: Attention Sound Engineers (compression and loudness) in Playback Listening  47 Replies 
[quote user="Romy the Cat"]Andy, my mind does not operate by the categories you employ, I rather think about nature of Sound not about harmonic/non-harmonic distortions. The whole subject about the distortion is intricate, not to mention that it is n...

Read the Post in new Window Read the Post in Threaded view  Post #16: Not so simple though... by anthony on 2015-08-14 
Browse the content of the threads in new Window  Thread: Another time aligned 5-way horn project in Horn-Loaded Speakers  189 Replies 
[quote user="Murataltuev"] anthony wrote:This configuration should give somewhere around 109dB @ 20Hz from 15w in room with cone movement of about +-3.5mm.  That is still low excursion, and they are excellent drivers.   Well, in this case, I also hav...

Read the Post in new Window Read the Post in Threaded view  Post #24: How do you time align the tweeter? by rowuk on 2019-06-19 
Browse the content of the threads in new Window  Thread: The IDEAL horn system in Horn-Loaded Speakers  27 Replies 
[quote user="noviygera"]Number one, that I'd like to run by you guys due to it's simpler nature and closer to reality execution is the idea I have been thinking about. No first hand experience with any of this.Say we use something like altec 1505b mu...

Read the Post in new Window Read the Post in Threaded view  Post #131: My troubles with direct radiators by Saturntube on 2010-01-25 
Browse the content of the threads in new Window  Thread: Midbass Horns and Real Estate. in Horn-Loaded Speakers  247 Replies 
I have been playing around with speakers for a long time, and things started snapping when I got into horns.  I have a system right now with an upperbass horn from 140 hz turned form MDF up to around 700 hz, to another horn, and another and a super t...

Read the Post in new Window Read the Post in Threaded view  Post #216: The new Back chamber and the back-wiping compression driver. by Romy the Cat on 2010-08-31 
Browse the content of the threads in new Window  Thread: Macondo’s Midbass Project – the grown up time. in Horn-Loaded Speakers  455 Replies 
[quote user="haralanov"] Also instead of using electrical tape, try to seal the back of the driver with a 2mm thick sheet of microperforated tonewood and then glue a leather layer over it. Then you could also pierce multiple tiny holes in the leather...

Read the Post in new Window Read the Post in Threaded view  Post #48: Imponderabilis Neurosis by oxric on 2011-02-09 
Browse the content of the threads in new Window  Thread: Macondo’s lowest channel. in Horn-Loaded Speakers  150 Replies 
Hi Romy:No need to reach for your medical glossary. The medical condition that I call 'Imponderabilis Neurosis,' is only the preserve of highly disturbed individuals such as myself (Hamlet seems to have exhibited symptons which are highly indicative ...

Read the Post in new Window Read the Post in Threaded view  Post #267: Coming back to the start by N-set on 2022-10-30 
Browse the content of the threads in new Window  Thread: Remedies the Beauty in Playback Listening  302 Replies 
Yes, of course, I was using 20Hz as some reference only. It's Fs of the ScanSpeak. Tannoy is the only active speaker so all power comes (or not) from it. From your experience with Reds, where does its reasonable output end? Like...

Read the Post in new Window Read the Post in Threaded view  Post #277: Phase and motion by N-set on 2022-11-07 
Browse the content of the threads in new Window  Thread: Remedies the Beauty in Playback Listening  302 Replies 
Edgar, very very nice observations re the phase! Can you somehow share the movie? Shouldn't there be a second phase jump around Fs of the passive radiator? Have you tried combining sealed subs running parallel with Dannoys? I.e. ...

Read the Post in new Window Read the Post in Threaded view  Post #206: I wrote about it. by Romy the Cat on 2017-09-21 
Browse the content of the threads in new Window  Thread: A listening room for a domesticated Cat? in Audio Discussions  283 Replies 
[quote user="noviygera"]Romy,What was the reason you were not happy with the last version of your midbass section? THe one with two Vitavox 15" per side. [/quote]It was not a last version but rather a temporary test version. I used in undersized sea...

Read the Post in new Window Read the Post in Threaded view  Post #18: The cable that I am playing now. by Romy the Cat on 2008-05-21 
Browse the content of the threads in new Window  Thread: Purist Audio Design vs. Purist Audio Design in Audio Discussions  25 Replies 
[quote user="Romy the Cat"] I do not think that the fluid is a big deal. I think the fluidness of the isolation is the key, I would use different liquid. In my past I tried silicon and Scotch Whisky and the result was very good. Would it be possible ...

Read the Post in new Window Read the Post in Threaded view  Post #38: Now the Real Work Begins by Paul S on 2010-08-01 
Browse the content of the threads in new Window  Thread: The loudspeakers for a powerful SET in Audio Discussions  48 Replies 
OK, maybe I got too zealous with the notch filter for the Reps.  I aimed to bring it down 6 dB at ~2.2k Hz, using .47 mH and 10 uF against 10 Ohms for the notch, with the Reps itself at 7 Ohms.  Right now, drums are too backed off, there is no "hair"...

Read the Post in new Window Read the Post in Threaded view  Post #300: Bass analysis continued by N-set on 2024-06-19 
Browse the content of the threads in new Window  Thread: Remedies the Beauty in Playback Listening  302 Replies 
I'm going around with the Dannoy bass augmentation like, as we say in Polish, a chicken with an egg. I posted my problems on DIY audio and managed to get some interesting comments from a gentleman named Art who was kind enough to educate me a bit...

Read the Post in new Window Read the Post in Threaded view  Post #7: Welcome to the club.... by Romy the Cat on 2015-08-13 
Browse the content of the threads in new Window  Thread: Another time aligned 5-way horn project in Horn-Loaded Speakers  189 Replies 
[quote user="Murataltuev"] I understand all disadvantages going digital.  I strongly believe that minimal influence to the signal is the most important aspect. And influences in digital domain are usually terrible. But I'm not sure what other...

Read the Post in new Window Read the Post in Threaded view  Post #1: Midbass injection channel by noviygera on 2016-11-14 
Browse the content of the threads in new Window  Thread: Midbass injection channel in Horn-Loaded Speakers  2 Replies 
I want to share what I feel is a good application of an injection channel, as introduced by Romy. But this is different and also useful and i can tell you it works and very well. Of course, I do not recommend to use this application in the same exact...
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