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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="op.9"]A 20w tripath and a 5w El84 set per channel is a sensible and cheap combination. The tripath and line level crossover section could be thrown in for free![/quote]
Ah, the EL84! That brings so many memories…. I was 9-10 years old a...
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Well, I do have 3 channels of DSEP. Dedicated Single Ended Pentode: one channel (bass/mid 30-500 Hz) with a 307A DH pentode feeding two wonderful Fane neodymium Colossus 12" - one from FS to 150 Hz and the second from FS to 500 Hz. OPT with a lot of ...
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[quote user="op.9"]I now run my 'tweeter' amp 1st order high pass at 2200hz (driving BMS 4540nd in 1500hz leCleach horn) so my impressions might have some bearing on Romy's new amps. I was playing around with operating points and components in my sin...
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Roman, thank you for your thoughts. However - you decided to use 6E5Pi to drive 6C33C, and the filed of competition in this case might be higher - including those E810F, E180F, EL84.. or even 12AT7, or even (probably) WE 437. ...
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Yes, seems an obvious winner to me too. I'm making some speakers for a friend and the big decision is one amp or two. A 20w tripath and a 5w El84 set per channel is a sensible and cheap combination. The tripath and line level crossover section could ...
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I liked your previous post . A week ago I repaired old Telefunken tube radio (Single EL84 with array of alnico speakers ) with FM band and I'm listening to classical public radio for whole week. Not even once I had desire to turn on "big" system I'm ...
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I used to listen to one of those German tube table radios. Graetz Sinfonia or whatever.IIRC it had a SEP stage with some EL84 and a plastic kind of mini-horn for HF and in general was running oldtubes, has never been cleaned etc. But nevertheless aft...
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[quote user="Romy the Cat"]
May ask you: how you drive your Reds 10” and the most important do you feel any their deficiency in power handling. I mean after the 109dB Macondo I have tendency to drive the small Reds slightly hard and this LF drive do...
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[quote user="Romy the Cat"]The concept of self-testing boot cycle is nice one but it for sure could not be done during the amp booting. Some tubes do need to warm up and reach the cruse temperature in order to be tested, some do not. Some tunes (lik...
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[quote user="peter foster"] By "dynamic viscosity" do you mean the reluctance of an amplifier to be dynamic, i.e., the degree to which an amplifier sounds like it is bogged down, usually as a result of a poor rise time on transients, i.e., poor HF re...
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I am looking into building a 45 tube SET amp and I keep reading about how important a good output transformer is. I read that cheaper output transformers like Hammond can be okay for mids and highs, but it will also reduce bass performance. If on...
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[quote user="Genn"]However - you decided to use 6E5Pi to drive 6C33C, and the filed of competition in this case might be higher - including those E810F, E180F, EL84.. or even 12AT7, or even (probably) WE 437. Some of them would need...
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[quote user="decoud"]For what it is worth, unless you are irradiating a concert hall, the SH50 is perfectly adequately driven by a 15W single 845-based SET, and I will shortly find out what it sounds like with a full range Melq. [/quote]Probably 15W ...
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At first I plan to power the thing SET, with a known, existing amp (a triode wired EL84) which I've already built and know the Sound. It is not bad, but a little "warm" sounding (second harmonics, and is low powered for low frequenci...
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The ECL82 = 6BM8 was used a lot in low-end amps, both push-pull and single-ended. Actually, according to your radio's schematic to which you posted a link, they are not being used "one per channel," rather it is a mono radio (nothing wrong with that...
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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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Like cv, I've not directly compared mumetal
to amorphous in an OPT position. However, my hunch is that the sonic
attributes are the same as those found at line level (I've tried
various Xformers as the IV/output stage in my Rakk Dac).
I now ru...
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Paul, you wrote:the best bass I have heard came from triode PP ampsWhich PP triode amps, using which output tubes?the little 2A3s have wonderful bass (as far as it goes...)Which 2A3s? The Wright 3.5s, other single-ended, or PP?I am mostly using PP a...
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One of the first audio miracles that I remember was when I
was I think 10 or 11. I had a reel-to-reel machine from 60s, it was running tube
amplification around Russian tube 6N14P and I powered from this tape machine external
speakers that I build...
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I have been searching for a good discussion on this subject for a while an yet to come across anything that really explained this: What are the causes/factors of compressed sound? I know it when I hear it, and have heard this phenomenon attributed to...
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peter wrote: By "dynamic viscosity" do you mean the reluctance of an amplifier to be dynamic, i.e., the degree to which an amplifier sounds like it is bogged down, usually as a result of a poor rise time on transients, i.e., poor HF response, or a tu...
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[quote user="Romy the Cat"]Hey, Chirag, long time no see. [/quote]Hi Kitty,I always try to see whats going on on this site, but by the end of the day I'm usually too bloody tired to think clearly enough to write something of interest. This week...
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Dominic - At the moment I'm using ..
highs - BMS 4540nd - 1500hz lecleach roundhorn. crossover 1st order HP @ 30khz and 3khz
5842 choke loaded (reg psu) RC coupled into 6N15N (EL84) with a custom sowter mumetal >1000hz xformer
midr...
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[quote user="serenechaos"]At first I plan to power the thing SET, with a known, existing amp (a triode wired EL84) which I've already built and know the Sound. It is not bad, but a little "warm" sounding (second harmonics, and is low powe...
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[quote user="RonyWeissman"]Hi, yes i agree that my solid-state amplifiers were not best choice for compressio drivers, they were my second amps when electricity was bad, otherwise I use a custom made 300B from La maison de l'audiophile for my s...
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It is interesting to recall how audio started in my life. Somebody asked and I was puling out from my memories some unconnected fragments was really enjoying to recall those times…
I do not relay remember how old I was. I was then probably 10, as a...
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Thanks for the detailed answers. I will explain my setup.You are right about the dipole bass correction instead of the injection channel. Since I am waiting for both a subwoofer and the Fane Studio 8M and their horn, I am using the 12" as a b...
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Dear Romy,
I have been reading the threads on GoodSoundClub about your journey with development of the Melquiades and Super Melquiades amplifiers. They are very interesting to me. I am pleased that your purpose was to produce a particula...
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My string quartet have just spent 6 days recording haydn and being assaulted by nasty Genlecs.
I can assure you that this is NOT what I want my system to sound like.
(Actually I sort of began to see the point of them after a while.. but
that's ano...
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Considering all "cautions" mentioned by Paul and rawuk regarding SET capriciousness to crossover and speakers I am confident that I will NOT have any problems related to the above cautions of crossovers or speaker loads.
I use an active...
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