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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Jessie,I just managed to snag a used Wavelength Brick version 1 for a very good price. The Brick and Cosecant v2 use the same DAC section, unless you purchase a newer Cosecant v3 that is offered with an upgrade to a multi-bit 24/96 DAC chip. I listen...
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That is given in the psychophysics: binaural phase offset sensitivity goes up with wavelength....
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...MQWT topology?(matchstick quarter-wavelength tube)...
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[quote user="xandcg"]Many thanks!How do I calculate horn mouth, cycles and length?[/quote]The required full-mouth radius of a circular horn is given when the circumference of the mouth equals the full wavelength of the frequency in question. So give...
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All below is written by Thomas Dunker
Yeah, "sound consistent independent of signal level" is a very precise way to sum up my whole speaker philosophy. Anything that is assumed to be constant, but which actually changes with signal dynamics is what ...
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Understanding Line Array SystemsBy John Murray
Behind the buzz, there are a lot of factors at work in line arrays. An explanation and comparison of current models. This discussion can’t be contained in just a few paragraphs, so we must start with th...
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I have received some questions and criticism about tapped horns. In order to spread a better understand of tapped horns, I’ll restate the questions and try to answer them.
1.) The mouth of the tapped horn is too small to be useful.
Answer: ...
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JD,In the case of the mid-bass horn, the throat transition does not affect the sound enough to worry about IMO. Due to the narrow bandwidth (100Hz - 1000Hz) the step transition between the woofer cone and horn throat is acoustically invisible. I...
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Jean-Michel posted a reply in response to my commentary:
http://www.diyaudio.com/forums/multi-way/140190-jean-michel-lecleach-horns-109.html
[quote user="Jean-Michel Le Cléac'h"]Hello,
Romy is totally wrong on that.
( a par...
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[quote user="Amir"]these are my findings about computer audio after some trial error:1. computer audio is very very hardware/OS/software dependent. computer structure is multi task (time sharing) and using it as a real time single task processor is n...
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I know the standard logic is that everything needs to be time-aligned, but essentially the lower the frequency seemingly the less critical time-alignment should be, at least on paper. I've heard of studies where it is suggested at low frequencies th...
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Brass instruments function much differently than audio horns. First of all they are built extremely resonant by mismatching length and horn taper. The taper of the bell is there not for horn type efficiency, rather to change the acoustical length of ...
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[quote user="jessie.dazzle"] Telstar wrote :"...it's always the DAC which accounts for the vast majority of the sound quality. This is why the guy above feels that his music server with Wavelength dac sounds better. There is also the unknown rule tha...
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From: Tom DanleySent: Tuesday, May 05, 2009 5:56 PMTo: RomySubject: From Tom DanleyHi Romy
http://www.goodsoundclub.com/Forums/ShowPost.aspx?postID=10359#10359
I hope you don’t mind the intrusion, it was suggested I could answer...
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[quote user="xandcg"]Romy,In general thinking, I mean in average, a horn to be used with ALE P160 or GOTO SG-146LD with a mouth of 2.8m x 2m (5.6m²) or 110" x ~79", is appropriated to going down to how many cycle, considering full mouth? What should ...
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I have heard some nice speakers in Germany using the Mundorf Air Motion Transformers. No saliva, ample "substance" in their tone and a very nice integration.http://www.mundorf.com/AMTnews/MUNDORF_PRO_AMT_FLYER_2012.pdfhttp://www.enjoythemusic.com/sup...
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Hello el`OlCan you better describe "the center of the wavefront is moving backwards" ? You mean the sound wraps around the speaker differently dependent on the wavelength compared to the baffle ratio i think ?This is also true for horns (not only for...
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[quote user="el`Ol"]In one point you win, obviously the speaker panels were not really infinite indeed.http://www.thomas-schick.com/Siemens.htmBut when the frequency where the dipole acoustic short circuit "kicks in" is clearly below the Fs of the dr...
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hey jessie-I've wondered the same thing-- and the more i end up twiddling around with it, the more I think it really either comes down to good measurements, or good listening! And in fact.. probably both in conjunction!I have a small 2 wa...
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I'm sorry that I am not on the wavelength that you wanted to use with this thread. With respect to your examples, yes it is good to try to play music in accordance with the attributes the composer expected, including the frequency of orchestral A, th...
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[quote user="Romy the Cat"]Metol, Phenidone, Hydroquinonee, Glycin[/quote]Musta been a teenage thing. I never got around to experimentation with my own chemical formulas. Damn! Later on I tried using color negatives and printing wit...
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Romy, perhaps you can give your 7th a photographic based analogy which you seek improvement on.Just don't say photo stitching ...Wavelength dependent level /hue /sat adjustment ? (gamma + black and white point)This will be recording specific though.....
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Dear John,
I hope you don't mind me writing directly to you. I've been posting on Romy the
Cat's audio boa...
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Romy wrote:
"...I know there are a lot of people who feel the CRW and DVD drivers in regular PS [CD and DVD drives in regular PCs] are just fine or even better then best dedicated audio CD transports..."
I am one such person; well n...
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[quote user="rowuk"]Brass instruments function much differently than audio horns. First of all they are built extremely resonant by mismatching length and horn taper. The taper of the bell is there not for horn type efficiency, rather to change the a...
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Low power set should not be a problem. The Unity was fine with SET amplifiers, so the Synergy should be no different, if not better. The Synergy horn is different than the original Unity horn. There are some very specific improvements in the Synergy ...
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First let me say I am NOT trying to promote the Synergy horn. I just think it is very intresting to look at and to think about.Ideal loading only occurs at a singular frequency within any horn. This ideal loading point is where the length is 1/2 a wa...
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[quote user="guy sergeant"]An earlier iteration I heard with this two tweeter arrangement sounded seamless & enjoyable.[/quote] So, can you elaborate, or ask Kevin to elaborate what is the “two tweeter arrangement” is for and why he was not able ...
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Romy wrote :"...Are you sure that using the USB you do not use the sound card?..."Not being a certified "Information Technologies" guy, I decided to contact the IT department while here at my day job (I work for an auto maker). Th...
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[quote user="nl"] Gordon Rankin of Wavelength Audio did a series of one-stage DHTs with a step-up transformer input about ten years ago. I think they were called the Mercury series. By all accounts, they sounded good, but of course had limited gain, ...
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