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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Yes, this is what I meant: link the pins using heatpipes to a heat exchanger, in fact I wonder if one could use the heatpipes as the filament conductors direct.The yamamotos are beautifully made but badly designed. The receptacle of each pin is a spl...
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it is worth reiterating in this thread -- and perhaps Romy should update his advice in the relevant section -- that exotic japanese teflon sockets such as the one made by yamamoto soundcraft are no good for the 6c33c, whether because of insufficient ...
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It is strange, isn't it, that there is so much more consensus on the relative qualities of different makes of musical instrument, and even where there is not no great drama surrounds their discussion. i wonder why that is, perhaps because most audio...
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http://www.sitefile.org/showimage/6/6c33c.htm
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The frustrating thing is that those who know "how" to do things often have too strong an idea of "what" to do...perhaps you should offer an internship to someone young and idle keen to learn...?...
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Here is my suggestion:1. Generate a flat template for an oblique cone, easily done using the free software here: http://www.tyharness.co.uk/cones/cones.htm2. Roll a sheet of black clay, at the required thickness, and cut out the flattened cone shape....
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Why not enclose it in a horn shape? After all, it makes sense for the facing surface to be circular rather than square, and a cone will have the best structural properties, as well as having the closest kinship with the rest of the stack....
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The decision to use banks was my builder's: whether it was availability or other reasons I have not asked. I want to change to single capacitors because I like limiting the failure degrees of freedom, so to speak....
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Rather than using a single can my builder made a bank of 470uf units, one of which failed. I thought I'd replace the entire bank, for simplicity. ...
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Looking for a reliable one myself: a capacitor just failed. Similarly for Electrocube 950s which are obscenely priced in low quantities direct, and not on the ground this part of the world. ...
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I must say I have never seen anything off-the-shelf that is not hideous, and so have adapted materials used for other purposes such as heavy copper braid (e.g.
http://www.ormiston-wire.co.uk/products/wire-braid.php ), either raw or blackened with E...
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Romy, does it not make sense to integrate the speaker and amplifier physically, given they are so tightly integrated conceptually? After all the concept of DSET essentially makes an amplifier bespoke for a speaker, so the only reason for keeping them...
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The MA-9s2s are supposedly flat in response to 3Hz, so is it that all that power is going subsonically?...
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Yes, the leveller component is just an M16 bolt, so you can remove it and screw whatever you want in its place. The width of the floorplate, however, is limited by the proximity of the wheel, and you may not be able to have it much wider than this. T...
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Sugatsune make these integrated devices that could work well: I have used their kit before.http://www.sugatsune.com/products/ProductDetails.cfm?CATID=12&SUBCATID=2&PRODUCTID=AF-50%2F65 But unless the contact points are very broad you will hav...
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Hi Romy, I imagine the coupling cap in the full range melq acts as a first order high pass filter: is there any reason why one could not lower its value to raise the cutoff to a level one would otherwise redundantly need a speaker-level filter to ach...
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Yes, it is a standard SH-50 run as Danley suggests. I have little experience of traditional horns beyond a macondoesque 3-way tractrix stack I created so as to get a feel for horn sound. I'll drop you a line about the melq builder....
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This is a synergy horn, a topology that Danley has a patent on, I believe, and certainly the most expertise. There have been extensive discussions on this site about it, including Romy's theoretical objections to the idea. In a synergy configuration ...
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This all sounds perfectly sensible and plausible, but other teflon sockets have a different mechanism of gripping the pins that may not be so affected, e.g. the ones I am using, here:
http://www2.117.ne.jp/~y-s/Teflon%20socket-2p-e.htmlI suppose on...
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My view remains unchanged: it is an extraordinary amplifier, at least with my speakers. It is also relatively simple, so if something goes wrong you will have no problem correcting it. I would change a few small things with the implementation -- jus...
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Many thanks for the suggestions, both of you, and many thanks Romy for making the schematic available to others. This really is a remarkable piece of work and I would strongly encourage others to try it. ...
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No, I have not pushed it hard at all: I am just trying to understand it in the mean before I look at the extremes. Though 100db sensitive, the SH50 is designed to handle 1000W or some such absurd power, so it is surprising that it works so well. It i...
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Yes, it is built according to the schematic, but by someone else, from whom I have only just received it. The opt is custom-made nanocrystalline amorphous core, gapped at 300mA and running 200V/240mA.It is quiet, precise and very fast (which last the...
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So, the SH-50 is easily driven. And the sound is easily the most interesting I have heard. Further reports to follow. ...
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Now they are back in production, surely that would be a great combination... ...
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...may amuse you...
http://glyndebourne.com/season/tickets-whats-onBut you would have to bring black tie. Or a tuxedo, to put it in North American. ...
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For what it is worth, I have found the Lavry DA-11 to be very susceptible to the noise level of the USB input and so may not be the best DAC to try with a computer, where the noise is a function of too many variables. Of course, if other material is ...
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surely the most lucrative option is also the simplest: offering to reproduce your entire system: nothing more and - critically - nothing less. that way you know exactly what you will get, and it takes no additional effort to do it. It is basically co...
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Not quite on topic but perhaps this deserves to be here:http://www.theaudiophile.net/threads/762-Lyrita-s-new-Mono-amps-and-DHT-Preamp?p=7735#post7735It appears to be a simple two stage SE design with the 6e5p coupled to the GM70 via an interstage tr...
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Yes, but is not the real question *how* different from the Taiwanese company's standard double conversion UPS the purepower units really are. If they are effectively the same topology and components (http://www.winstream.com.tw/products/RHC.htm) but ...
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