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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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That's one big tweeter, Romy, and, typically, it was made that big only because they intended for it to go low. I keep wondering about the effects of the extra mass, if nothing else, but also about dispersion and window blind effects ...
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After burn-in the heater for 24 hrs, I tested all 3 Golden grid tubes on a bench power supply , 2 of the tubes worked fines, 1 tubes does not have current. The tube seller gladly refund for the non functional tube.I talked to a 6C33C OTL amp manufact...
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My experience is limited, but I tried it a few times (300B, 845, OTL ...) with 8 ohm Speakers, 92dB and a crossover, which is simple and never got a result which was close to a high sensitive speaker (98dB ...), no breathing, no air, Headroom was lim...
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Terry,
I did found that PP amps were good to drive BAD compression drivers (with ceramic magnets). The irony was that the better amps to drive the ceramic magnet were not just the PP amps but the solid state PP amps. Do not ask me why – I do not kno...
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New here, but I thought I would continue my 5+ year search for another pair of these sockets. I have all the parts to build a 6C33C OTL using 4 tubes and would like to find another pair of these. I have one pair that I happened upon late one night ...
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Petar, one can deduce that the PS takes up the rest of the universe that is not in this picture; but where is the output transformer? Is it hidden by that monster tube, or is this sucker OTL?!?Eat your heart out, George Kaye!Best regards,Paul S...
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I was pointed out today to 6Moons review of Canadian Tenor amp:
http://6moons.com/audioreviews/tenor/m350.html
written by Mike Malinowski -I do not know who the guy is. I have to admit that I treat anything that come from 6Moons with certain grain ...
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[quote user="ml8"] You see, i'm always struggling to find sound without that damn granularity in it, but so far i did not succeeded. Only few of my amps (DHT with kenotron rectifier) were almost free of granularity, but still they all have other flaw...
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I read one more page from the Tenor description, before the author begun to talk about sound. A correction need to be made, from the first pages I understood that the amp use 6N6P driver but on the next pages it was not the case. Perhaps I confused s...
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Somebody at AA asked about the difference between electromagnets and perm magnet. Thankfully the AA idiots who pick the pieces of brain at my site and already learned that the idiotic blabbering about “the electromagnets have more flux” is comple...
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[quote user="drdna"]one. I like to think of toplogical change in terms of an organic visualization of the electricity. traditional valve-OPT: A guitar where the vibration of the string transmits through the air to the guitar which respond...
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[quote user="Paul S"] I think, BTW, Romy knows more than he tells about the parallel 6C33Cs. In any case, there are stable commercial examples to draw from, eg., the many examples from BAT. Don't forget, space around the tubes. [/quote] I do not th...
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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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Hi Paul,My understanding is that the placette has a unity gain buffer. At full CD ouput levels of 2Vrms into an S2 - it wouldn't quite get that into the S2s 16 ohms - but say it did, you'd be looking at about 109db from a pair...I'm not saying it wou...
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The voices, the voices...Just a word of warning, if you do decide to give this a go, remove the diaphragm first and be sure to have exactly the right size screwdriver - that bolt is prone to flaking...Might I suggest that if Macondo has evolved to th...
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I haven't given it a lot of thought other than to note the irony that there are quite a few dedicated OTL people who use autoformers ahead of their speakers. In fact, I think there is fairly brisk underground traffic in autoformers for this use...
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Merlin, would you please be less cryptic?Is it one of Ralph's OTLs or a DIY, or what?What is power and what is full power bandwidth? Into what sort of load(s)?What is distortion at full power? At 1/2 power?Do you use an autoformer, o...
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Mats, believe me, I'd love to get off the frickin' grid altogether. But if I'm looking at >20 car batteries just for the K&K phono stage, then how many angels will fit on the head of a pin? Ironically, the K&K also uses JFETs.....
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As I've mentioned elsewhere before, over the years I've gotten about 25% clinkers, among all tubes, from all sources, including "specially selected, graded and matched" tubes. Also, I have lived with the 6C33C enough to say it "drifts" in use, and i...
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Following my recent “new objectives” with tweeters (partially covered in the last posts of the following thread)
http://www.goodsoundclub.com/TreeItem.aspx?PageIndex=2&postID=2791#2791
I lately made quite a few very interesting and very educati...
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Thanks for the extra information, Merlin, it tells much. Please re-read the post you took umbrage with and you will see that I said I took a guess about the circuit (once you confirmed the amp's identiy), and I did not say that I guessed t...
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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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Morricab, I perfect concur with your findings and I come to the very similar concussions regarding the autoformers.
Unfortunately my experience with OTLs was much less exiting then yours. I presume that it is possible to get an "interesting" sound ...
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[quote user="Romy the Cat"]Rakesh, Equi=Tech is a know player in the fields of audio electricity. Back in 2001-2002 I had 3 of the Equi=Tech transformers. I was not pleased with results. I do not like the balanced operation for power lines – in my vi...
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My first impressions a about the “differences” of field-coiled derived form the time when I ran the Telefunkens war time drivers but at that time I had no reference how the same driver would act with permanent magnet. Also, the Telefunkens are the re...
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As good as my ULF turned out to be but purely conceptually it is not an ultimate proper playback solution. I have midbass horns runs down to 42Hz and ULF kicks in at 25Hz with 3rg order. In reality does to the geometry of my room and the fact the dis...
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KOTriode, We had this conversation before. It is not what I regularly experience. The 20% of faulty tubes is astonishingly high number for this tube and if he has this ratio and did not change his suppliers then he must be crazy. On the good side you...
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[quote user="oxric"] Thanks for sharing your experience, quite damning, of Equi=Tech transformers and balanced power solutions. I cannot hide my disappointment as I felt that the theory would suggest balanced power offers a high level of protection f...
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Romy,
I have good confidence that it was the tubes and not the circuit. I have checked the cathode driver that bias the 6C33C and there was not any problem. Sure if the cathode bias failed, the 6C33C current will shoot way up and burned up the fuse...
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[quote user="KOTriode"]Romy,I have good confidence that it was the tubes and not the circuit. I have checked the cathode driver that bias the 6C33C and there was not any problem. Sure if the cathode bias failed, the 6C33C current will shoot way u...
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