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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Romy seems happy enough with his flea-powered DSET. But, again, each channel is well-matched to its task, and Romy gave a lot of thought and development time before deciding on a driver/output tube, and there was more to his decision than power requi...
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I'm working on a project that may be of interest to others, and thought posting to this old thread was a better way than beginning a new post.I use speaker level passive crossovers, between multi-amps (not DSET) and drivers. My desire is to move the...
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I got some time on the PC to start to think about how to layout the DSET. I plan to build it a little like a skyscraper: multiple levels separated by component groups and functions. So mains transformers, AC socket and perhaps time delay rel...
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Thanks Romy.I have secured a couple of pair of YO186 and some 1940's Sylvania 45's to play with. I wish the YO186 were easier to come by but I think that I now have enough for me to get a very good idea of the capabilities of the tube and circuit, a...
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There are at least two threads going here. I am onto the idea that Lamm has finally released his latest-and-greatest uber-amp, and I am trying to glean some idea of how it performs, other than the political mirror test. Obviously the...
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There are still room modes to contend with the first starting at about 41Hz.Here is an impedance plot of the left Bass Cannon as seen by the amplifier, so including speaker cable.As you can see I managed to get Fs down to about 44Hz and it turns out ...
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So I am currently working towards this concept for my Macondo (see below) and I have just the Upperbass horns left to turn and prep. I am thinking about how to best integrate the DSET with Macondo and have come up with something like this… Perha...
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Unfortunately I've reached out but not managed to make contact with John Hasquin regarding the spacer in the upperbass horn. I'll just have to wing it.I did finally manage to get a day and a half to make the second DSET operational but it refuses to...
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I don't have an OTL - I just don't have any transformers in the audible band that saturate, distort and roll off frequency extremes.
I have heard plenty of traditional SET's from Lamm to Wavac, AN, Kondo and many others. I know I could not live wi...
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[quote user="Paul S"] What are you using for pre-amp chores?
Have you tried phono sources yet?[/quote]
I do not use analog for now, since my preamp is being rebuilt, I hope I will have it back this week. Well, I was listening today the life MET’s b...
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There is Moscow-based Company “Next Sound”, the web site unfortunately only in Russian
http://next-sound.ru
… and they make some tube amps including one 400W.
...
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[quote user="Paul S"]Meanwhile, I was thinking
about field coil drivers, not to introduce a new topic but to re-consider the
driver itself as "tune-able", at least with respect to the gap. [/quote]
Not willing to much to hijack the thread but I ne...
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[quote
user="xandcg"]I would like to know, if you do not mind to explain,
since you cannot drive your bass modules using SET, why you use Solid State
amplifiers instead Pentode or Push-Pull Triode?[/quote]
Well, I need to say that I
never hear...
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dI, thanks for your post. It is an interesting post, might I
comment upon it? I do not share your experience with Melquides amplifier even those
I know exactly what your were taking about when you wrote about changing own expectations
by observing...
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[quote user="Tax"] Given the varying degrees of how different individuals process COGNITIVE ORDER OF SUCCESSION there will be differences in between how the plumber Vs a brain surgeon handles COGNITIVE ORDER OF SUCCESSION. I guess on some things...
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Something had changed very positively with multi-amping. I am not quite sure if it is because the full multi-amping of the specific of the implementation but it is what it is. The entire dynamic relationship between volume of a given tone and the ton...
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[quote user="floobydust"] The main component that limits low-frequency response in any SET is the OPT. For these initial designs, I used the smallest Hashimoto SE OPTs... their H-203S for the 2A3 and their H-507S for the 45 which are rated at 7...
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Nope, the Russian tubes generally much, in fact much worse than western equivalents. There were however some exceptions. Those options were due to various reasons. The tubes like GM70, YO186, 1P24B, 6E5P, 6N30P, BO188, GM57, UB180, 6C33C, 6N6P, M...
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Dear All,I wish to commence gathering the components and finding the craftsmen necessary for my DIY speaker project, but wished to bring my proposal before this forum in order to establish whether it's intrinsically worthy, and whether any simple imp...
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…the theory that you not correctly presented BTW. Is it in an amp with a half-dozen series transformers Sakuma has the “killing bass”? The Sakuma amps are bandwidth limited by default, it is what BTW Sakuma went to DSET to fight the bandw...
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[quote user="anthony"]My interest is
mainly in the 10Y/801A/VT25 tubes on one hand and the 45 on the other hand.
The YO186 also interests me a lot especially after reading your
impressions of it in your circuit and system, but it is a very diffic...
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Have put all my DHT's on the curve tracer to see if pairs can be matched for preamp duties. My stash of 10y/VT25/801a/VT62 are generally all very new or NOS specs with mu and plate resistance varying a little, but generally close to nominal specific...
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[quote user="anthony"]I also have another SS pre just arrived with has been measurebated into existence with measured spec's difficult to confirm with the best measuring equipment getting about.[/quote]I've been listening to the new buffer with imd/t...
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[quote
user="anthony"]Well, probably not up in smoke, but it is just not
functional any more. I was away for a few days and came back to my room
to find the Placette refusing to change volume or select a source input, so
something is amiss. Per...
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[quote user="anthony"]I did finally manage to get a day and a half to make the second DSET operational but it refuses to bias correctly. I've traced the circuit a dozen times, checked component values, tried to find shorts, checked cap polaritie...
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I do not think that 6e5p driver stage withh ss could be useful for proper playback. or would it somehow be melq.
I am familiar with the proven method. in the case of melq it should be followed 100% exactly. I am very greatfull for ...
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Excellent news regarding this morning's discoveries. jd wrote:"...Are you able to say whether the problem is due to the horn position relative to the room, or to throat diameter relative to the driver diameter?..."Yes, a stupidly phrased question, bu...
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[quote user="Paul S"]Today I used the re-capped/improved K&K phonostage as a source and I drove the speakers first from 8 Ohm and then from 16 Ohm taps, and I got a very pleasant surprize...... .It certainly gave a clue as to why Romy would opt a...
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[quote user="drdna"]I wondered if Romy or anyone else has toyed with Sakuma's very interesting topological solutions. I have followed this for a number of years but my circuit building skills are so poor I figured I would likely blow something ...
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Thanks for the tech info, Merlin; it helps a lot, especially combined with the preferred music revelation, up the thread.I agree that the OPT figures in to the sound, all right, for better or for worse, and there is no mistaking the OTL "clarity" by ...
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