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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="Romy the Cat"]
RF at Ona wrote:Personally, I think it debatable whether the mouth edge should be free or attached as there are desirable aspects to both approaches. If attached, it need not be attached with great pressure. Robert, ca...
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I had the same problem with my 6 foot, bass horns , which were built from 3/4 inch high density fiberboard. On doing some measurements back then, it turned out that they were vibrating for a few milliseconds after a pulse, giving a decent rise time b...
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[quote user="unicon"]Bass FRQ have enough power to vibrate horn mouth and constructional area nearby them. use a chip contact Mic in your horn mouth n monitor how does it vibrate Remember the time I insisted for having access to your midbass horn dr...
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newbie here but this interests me as i have the baby raven one. the platter of the ac is hollowed out and filled with a gel and then topped with the copper "mat". why is this important? because vibrations exists is 2 forms, s-w...
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Again, none of the pneumatic methods would work as any pneumatic leak air with time and it will be no access to it after the horns are installed and the walls are finished. Not mention that we have no high to play wit. We will be doing the follo...
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I do not think that anything in back chamber has to do with anything. Look at the size of back chamber and the wavelength. No reflection from there might have effect to anything. For sure the material of the back chamber affect virtual volume but it ...
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...is a pita, no, no, PITA! In my circumstances I've had so farreasonable results using foamed natural rubber to mechanicalydamp the chassis. Has anyone tried that ridiculously expensivesilicone gel tape/chips?As for the multiple shields on MC's. Hig...
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[quote user="N-set"]Anthony, I'm sure you realize that air springs and bearings can only isolate from the structure born vibrations. Placing the tubes so close to the speakers you give them a great chance to catch strong airborne vibrations. Or will ...
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[quote user="Romy the Cat"]The contemporary productions DHT tubes (Russian of Chinese) are superbly firm and have no internal noise when they shacked or hit. The mintage 60 years old tubes what you make the “close to ears” test responses like as some...
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[quote user="Romy the Cat"]Also, in DHT the electrons flow dispatched not from uniformed nice cathode but from many 3-D wires that make the arriving to anode not… time-aligned and more unsystematic. BTW, this is one of the reasons why many DHT people...
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[quote user="Romy the Cat"]Stonily they are very similar in my view with a very slight advantage of 6E6P in delicacy and softness. I do not know what you mean “respond differently regarding vibration.”[/quote]As I had been looking at all these tubes...
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[quote user="Romy the Cat"][quote user="drdna"]As I had been looking at all these tubes I began to also inspect their interior construction. This will amuse you: one thing I would do is to hold the tube right up to my ear so the glass would be touchi...
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My first thought is for a "very dense layer of foam", or maybe very good felt, between two hard, even "slipping surfaces", such as 2X4s or even "5/4" (1" net) or 3/4" net oak boards. This might be a fairly thin sandwich that the entire length of...
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Romy,I somehow feel that you should look into the vibration induced resonances that those rooftop horns might create.I'm not really familiar with the all-wood building techniques used in that side of the Atlantic but I have a hunch that unless you ei...
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[quote user="zztop7"]People forget that their floor, subfloor, & other associated structural pieces connected to & part of the listening room will have to EQUAL the standards of the Verdier. Do NOT count on your contractor no matter what he ...
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[quote user="unicon"]I agree and understand how important is moving the speakers to find the symmetrical impulse from both channels BUT in microscopic movement we mainly correct the vibration of speakers which indeed effects the whole things.in m...
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N-Set, I do not claim to add to the facts you have already comprehensively given, I am merely asking about the logic, and I do not suggest to have a definitive answer, hence my ending with a question. I can see three reasons why other people use spik...
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Yes, I bought a few jacks, they are not expensive, I can buy a lot of more. I put them under the floor, assuring that the floor does not “play” anymore but there is one big but in all of it. Those intellectual attacking of the floor’s mode have absol...
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Last night I was experimenting with integration of ULF and midbass and was playing relatively loud. The ULF woofers is at second order at 35Hz and the were located outside of my listening room, in the next room with a large wale between then, but...
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I do not think that anything in back chamber has to do with anything. Look at the size of back chamber and the wavelength. No reflection from there might have effect to anything. For sure the material of the back chamber affect virtual volume but it ...
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You can improve the vibration decoupling by lessening the weight on the horn mouth edge.
There is no need for the edge of the horn mouth to bear a great deal of the weight of the heavy end of the horn, although that seems your current plan. Th...
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Again, none of the pneumatic methods would work as any pneumatic leak air with time and it will be no access to it after the horns are installed and the walls are finished. Not mention that we have no high to play wit. We will be doing the follo...
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Albert, the Adjustable Hydraulic Dampening might be effective if the vibration of floor is the factor. This is exactly what I question as I do not feel that the floor vibration is a problem. Considering the length of the waves and the amplitude of t...
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The horns are still plugged but I desired to test if the vibration from the midbass hors will be detectable on the listing room floor. The mouth of the horns does vibrate. Well, it is not a vibration but rather some shaking – pit in this way – if I h...
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Romy,OK this is getting clearer I think. Any object that receives a force will vibrate. So even before the music starts but there are hundreds of people in the seats, their feet moving around are vibrating the floor slightly. Similarly the orchestra ...
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I needed to lift my PP1500 off the carpet as it had not enough air circulation. Somewhere in the PurePower materials I read that vibration isolation is advisable, so I decided to kill two birds with one stone. I've got a set of nice metal roller foot...
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[quote user="steverino"]You would need to keep the other components the same to test them all but that would inevitably favor some TT designs over the others...[/quote]Spot on. Loads of hype, a bit shy on the experimental proof. It starts out with a ...
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Well,Berning is a genius to be sure. Here he fixed his sights on the "evil" output transformer. Every part of the circuit alters the sound somehow, of course, and the goal is to find the least damaging topology. The question is aske...
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I used to have a rack where sand was placed inside the structure of the rack (square pipe) and then I would insert a rugged construction rod inside it so it would be "suspended" by friction inside the sand. It didnt work, there was no advantag...
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[quote user="N-set"]Anthony, I'm sure you realize that air springs and bearings can only isolate from the structure born vibrations. Placing the tubes so close to the speakers you give them a great chance to catch strong airborne vibrations. Or will ...
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