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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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[quote user="jessie.dazzle"]Romy, I followed his advice and currently rent four storage facilities; two on either side of the Atlantic. I think its time to consolidate, but I'll definitely let you know if I need to add a fifth. jd*[/quote]Jessie:T...
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Vincent Brient is French guy who has built an interesting installation that I think worth to analyze. Years back Vincent was an enthusiast, like normal people, but it looks recently he turned “pro” and came to audio market with his own version of...
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There is site out dedicated it infinite baffles subwoofers. I am not sure how serious they are as they use mostly metal in rubber drivers as got thrilled when “Apollo 13 takeoff, my doors move back and forth 1/2", and the frequency is below 5 hz...
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Typical framing would be 16" or 24" on center, with 14 1/2" or 22 1/2" between ceiling joists (or rafters). With "conventional framing" it is usually no big thing to "head out" for openings, and soffit and/or frieze vents plus ridge or near-ridge ven...
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Thanks, msaudio, for sharing your experience with Aura and Hartley. I do not have Hartleyes. I heard them I think twice but person the people did not try to get out of their playback anything that I care, so it is hard to say anything. In contrary I ...
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[quote user="Romy the Cat"]What are my plans for 2011? I have a few. I am sure that I will be working with fine refinement of Macondo in the new room. I look forward to review the Macondo Fundamental Channel, will it be my new 18-cell or not I do...
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Be, thanks for bringing up the "subharmonics" in the way that you have done, for another good look at the elusive-to-hi-fi "undertones". I have been bitching about and futzing with this for ages, and now am I working with the drivers, themselves, t...
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[quote user="Paul S"]Scott, is it your specific aim to configure an enclosure to "effectively" lower driver Fs? While this, along with an exponential increase in power, is a proven strategy for generating ULF, it seems like this approach creates more...
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My five cents, folks... find nothing wrong in a flexible ULF, as it, sort-of, makes honour to any audio system and music and audio lover, as this "flexibility" strongly reminds me to various music and concert halls and venues around, where their "per...
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Once again, there is nothing specific in this post just some further thinking on the subject, as I keep discovering new idea.
A couple weeks back I was looking at a house that gave in inspiration to think about it. The house was 3 bedrooms Cal...
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[quote user="Paul S"]Romy, perhaps your ScanSpeak arrays are a +/- natural fit for mid-bass? If you used them for that you might also push them down a little until you got your ULF solution. The "nice" thing about this is, you might use something r...
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Here we go, I will be telling you that I am looking or that I have found the “best” cable to use for bass channel? Sound like a stupid thing to tell you and sound like a stupid thing to read at my site. Still, I will be obnoxious enough to insist...
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It is difficult to say below what frequency there is no sound registered, the lowest fundamental on a double bass is 41Hz and the A0 on a grand piano is 27Hz, both these fundamentals and at least one harmonic thereof would probably be recognizab...
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I think my dysfunctional one 15” driver in my Midbass was
for a while and THAT was something the make me to feel that I need to move
Macondo to 9-9-1 position. With the recent changes (recovery of a woofer,
recalibration of channels, EQ of the mid...
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Romy,you have often advocated the ULF channel not having a sharp lower knee. Maybe something like the Thigpen rotary woofer with response to DC would be worth considering....
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I agree with Paul: it seems wiser to take care of the room before trying out new ULF solutions.I'd place the jacks in the basement under the speakers and close the equipment cubicle with a glass door like the one you have on the lefthand side.Cheers,...
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Maybe it is because I have very low audio-IQ, but I don’t understand the implementation of your ULF channels - how is it possible to inject +30dB at 25Hz without changing the sound? What is the crossover frequency of that channel? Could you post a ph...
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In the Christmas Spirit, a couple of notes in passing:1) These units might need a LOT of power to make ULF in those cases...B) "Conventions in Vegas" re: pro speakers = "Little Old Lady From Pasadena" re: used cars.Paul S...
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Romy wrote:"...What kind outer suspension it has, is it rubber?..." Correct (I know I know...)"...I think the key factor would be the degree to which the driver is able to decimate the LF pitches..."Pitch: The property of sound that varies with varia...
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A brief search for the Barefoot Sound speakers suggests that it is very important to the designer that the speakers be compact, which (if they are actually acceptable in terms of sound) might be a boon to apartment dwellers, students, teens, etc. Fo...
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I think this GM81M does not justify itself. It's good only for welding and tesla coils?Due to a seeming common unknowledge ofhow to relate spectra to sound at ULF as a bare minimum I tried to get a decreasingspectrum of harmonics. This brought the po...
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It seem that the concensus here is that there is no tone in the ULF range, something like below 50Hz.This is probably not true for live acoustical instruments.Physical systems that can be described by non linear differential equations, are known to p...
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Roman,[quote user="Romy the Cat"]Nevertheless, if that bass was truncated between the stages then the devastations are way more severe. [/quote]That may be so, however an LF response of less than -0.1db down @ 10Hz is what is normally called "ruler f...
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If you put ULF boxes where they "beam" best, would this not, none the less, re-create the weird (U)LF chart you have already shared, with +10 dB at the chair, TT, etc? If so, perhaps you can have the wave cake and eat the full-pressure, too with the...
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[quote user="Romy the Cat"] I would load one pair with dynamite and send to the very deserving person...I will be celebrating if I learn that this asshole got run over by a very slowly moving asphalt roller machine. [/quote]Romy, I wonder why you wou...
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Yes, if you are at 40Hz first order then you are with regular dedicated LF channel and tone is certainly a subject. The entire definition of ULF channel inkstand or LF channel is that ULF channel has no tonal information. It is very same like use twe...
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I've been pushing this intellectual excersise (masturbation?) of solving Romy's constraints on a powerfull bass SE amp.Thanks to Stephie Bee the humanity have now a decent model of GU81M, so before electro-cuttingonself, one can see if the electrocut...
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You might find that you don't need that much power.When I first built the ULF channels I assumed they would require loads of power, so I bought a single, mono, 1KW class D amp to use in testing. Then I tried driving them with a pair of M1.1s that I h...
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The AE cited is said to be "designed for IB". Since one does not "use the box" or a vent, etc. to jack up IB LF, it's going to be all about moving the 250g Mms through the usual, steep, ULF filter. Maybe a notch filter or anti resonance filter at ...
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....may work here as small dis-sincronizations in pumping the current should not matter at ULF.But how much God would be in 121478521785 parallel KT2318 tubes?1/121478521785?One, max two big tubes is still more appealing to me, don't ask me why.I'm t...
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