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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Let start from the largest drivers and go down. There are larger then 18” drivers (23” and 30”) but looking at this magnet structures I do not find them serious. I addition to make the 23” cone stiff enough requires a lot of diaphragm’s mass or to us...
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So, it has been a while. I have DSET/Macondo in stereo now although there is still some work to do to finish it and tune it to the room. As discussed earlier in this thread I need a preamp with gain and the Placette is just not cutting it for me (n...
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[quote user="Paul S"]Scott, is it your specific aim to configure an enclosure to "effectively" lower driver Fs? While this, along with an exponential increase in power, is a proven strategy for generating ULF, it seems like this approach creates more...
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Hello Roman,Hola from Hong Kong! How are you? Haven't been here for long time. I have a question at the back of my mine for long time, and it may have been covered elsewhete in your blog before. I am asking it here but do point me to the thread if it...
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Rather involved discussion about Helmholtz-type speakers. Here's another proponent, Hans Kortenbach:https://www.youtube.com/watch?v=LHBlikzKoRgI have only "heard" the Musical Affairs speakers on YouTube, but I have to say, they are able to do some s...
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Shannon, from your questions I "understand" that you want to drive lifeless speakers with a hybrid amp that features a 6E5P first stage. Is that what you want to do? What do and don't you like about your present set-up? What do you hope to change an...
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I am not the person to speak about the 6E5P but I have messed with hybrids. If you want LF power, I can say I've heard some pretty simple plate amps that "work" at LF. It would be helpful, and it might even be necessary for you to tell more about you...
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Well, that's a mighty interesting hybrid! And talk about current! I'm going to look into that further, myself.
BTW, yes, some MC SUTs are "like that'", but - obviously - they are "LV".
Best regards,
Paul S...
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My wording was bad. I am building zarathustra but am a long long way from completion. I do not have the capabilities to just whip one up. Yes the 6n1p was from the old days when i thought i had discovered good sound, i'm sure i still don't know(but...
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Murataltuev, I am not qualified to advise about the fine points of horns, per se, but I am guessing the big "slab" in the middle of each horns tower will create more problems than it solves, at least with respect to sound. Honestly, unless you are OK...
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Public radio WGBH (89.7) reportedly bid $14m for WCRB (99.5), Boston's fledging privately held 100% classical radio station. Reportedly the idea is to make 89.7 a pure news format, whereas it previously was a hybrid including classical music. WCRB wi...
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Paul, if by error correction you mean frequency correction then I was thinking about +/- the same.i) Active filters; I have zero experience with crossing-over but people who seem to know what theyare talking about all agree that at ULF active is the ...
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Yeah, that is low life for sure but that kind of takedown is becoming more common. People are copying the politicos (of all types and persuasions). If they can't give a memorized answer or it jars one of their buzz phrases they feel free to slime yo...
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OK, I have one foot back in the water again, a hand-me-down monoblock from a "well-respected movie sound producer", to whom I am connected through dear friends. Like most "sound professionals", he is fairly dismissive of the way "we" hi-fi nerds go ...
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[quote user="drdna"][quote user="Romy the Cat"]David got rid of transformer and replaced it with a DC transformer, claiming that it is “better”.[/quote] And I should point out that not only is there still a transformer in the circuit, but many other ...
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[quote user="el`Ol"]Here is the link:http://www.rank-concept.deI have no experience with the Lamm ML-series, I just listened to an M-series hybrid amp combined with the Watt/Puppy 8. This performance was a single fake (though a pleasant one). I can´t...
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I thought the B1 was Yamaha's V-FET and the B2 was a later "hybrid", but I suppose both are Vintage Sufferer's wet dreams. I have never heard either amp, anyway.
Yamaha B1 and B2 conceptually the same amp. B1 is made only with one polarity V-...
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I heard back from Lamms about the relay pulses. They suggested I bias the amps again and then Lamms went silent when that didn't work. But the problem disappeared when I got around to replacing the 12AX7s that came with the amps.&nbs...
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Hi all ! [quote user="morricab"]
Hi Romy,
Could you explain a little more about the amp? If I understand you correctly it is a 1 tube stage with solid state (Mosfet or Bipolar??) output. If it is Mosfet then it is likely to be running w...
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I was traveling yesterday and away from the computer until this evening. I'm glad to see my post as the source of controversy and even cause for a public flagellation from Romy. I don't know whether to laugh or to cry. Actually, I d...
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[quote user="jamesrm618"]The Vincent SP-T100 looks close "The SP-T100 is a hybrid mono block with tubes in the input stage where voltage is amplified. The power output Amplifier circuitry works without feedback." Nominal output power Class-A 8 Ohm: 1...
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Hi Jarek,Apologies for missing your post.To answer your questions:(1) Yes and no. I've bundled the preamp into its new chassis (that I made from scratch) and it does not sound as good as before. There is a grounding problem with the new installatio...
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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="RF at Ona"]Romy and friends,Reading about the sensitivity of your system to electrical power supply problems reminds me of the days when I used to make my own equipment as much for the learning experience as for the final result.One of t...
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Hm, I did not realize that that it was a preamp. I thought that
it was a hybrid power amp. In preamp the Y10 probably might sit at lower
voltage. I have no idea how can they talk about preamp and do not talk about
what output impedance it has....
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[quote user="N-set"]And paralled drivers? May I ask why you wanted to avoid them but would accept paralled output tubes?[/quote] I would for sure avoid any paralleling, would it be driver or output. Still, driver provides voltage gain and output stag...
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Anthony
Do I remember that a big part of Romy's choice for a pre-amp was based on the specific needs of his DSET Milq, with it's inter-stage X/Os? And do I remember the Placette Active Pre-amp has consistent, fully buffered 10R out?...
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[quote user="Paul S"]
Anthony
Do I remember that a big part of Romy's choice for a pre-amp was based on the specific needs of his DSET Milq, with it's inter-stage X/Os? And do I remember the Placette Active Pre-amp has consistent, fu...
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So, I have been looking into suitable valves to base a preamplifer around that are suitable for driving the DSET's. The pre must have a broad bandwidth, low output impedance, some current drive, and not be prone too easily to microphony. Oh, and pr...
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Being a trumpeter, I certainly have an opinion about this - on many levels.I believe one of the major benefits of a trumpet (horn) is the ability to completely melt into the orchestral fabric or with ease move outside when MY voice in my opinion has ...
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