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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="Paragon"] Romy,any information out there for a set of Power / Audio output Trans/ for a Single-Ended 6336B Monoblock project? Thanks, The Paragons [/quote] The 6336B is twin triode, I have seen some peoples is it but I personally have ...
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[quote user="Romy the Cat"] Currently I have Jack Elliano’s made 450mA, large, single section LF transformer that begin to roll somewhere around 800Hz. The transformer ha s a lot of core mass and at full Melquiades’ LF power (~20W) it begins to clip ...
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So, it seems the replacement valve was duff. It was a 6c33c from 1966, not a 6c33c-V which I had before, but that ought to be irrelevant. Odd. ...
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Yep the same company (they also make a VERY good sounding OTL using the 6C33C tube). I have heard that zillion tube amp and it is also quite good (but I thought the 6C33C amps captured the "correct" tone better). You should try to hear th...
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Jim, I did try the anti-phase transformer in the secondary but I felt that it did something to sound. I can not do it on primary as I have the pate coil for the first stage sitting on the same transformer. Regarding the sweet spot of the 6C33C - I ha...
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[quote user="KOTriode"] With 6C33C output run at 40W plate dissipation, this amp run much hotter than an 845 amp with output tube running at 100W. I measured the hottest point on the bulb and it is about 380F. I guess the due to short bottle , t...
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One more thing that I would like to point out in context of the recent Marc Mickelson’s review. Marc wrote:
“The Atma-Sphere amps are certainly more powerful than the ML3 Signatures, but not noticeably so unless you clip the Lamm amps. “
Here is wh...
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Dominik,
I do not think that you need suggestion from me. If Pieter looked at the schema then everything is very much identifiable in there and he shall know what to do. Let me to give you alternatives that are not at the schema.
The 12,6V/...
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I speak with people, receiving emails, read others comments here and there and I constantly surprised how the accidentally obtained and unreasonably interpreted data become a wide spared audiophile myths.
For instance there is a strong believe, wit...
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Jim, I have sent you the tubes – it might be an interesting journey.
I send you:
1) 6C33C that was working with both cathodes approximately a year. It is not dead year but it is deep into retirement age. Run it at 220V and 200-250mA full-tube,...
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Today I spent many hours trying to remove large LF transformers from Melquiades belly and replace them with another one that would load my 6C33C a bit harder. I do idle my output tube very hard and my objective was to get to let it go slightly. The ...
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Cyrille, thanks for the comments. The KOtriode’s 6C33C preamp is certainly a unique thing and not a lot of people have reference how it might sound. Not it is too complex but rather not a lot of people have balls to make preamp out 6C33C. In fact yea...
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Well, as I understand there is no truly GM70 vs. 6C33C context yet (sound in the respectfully equitable load) from you and it will be very interesting to hear from you when you feel that you are ready to say something. As I understand they are the sa...
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[quote user="Romy the Cat"] ... did anyone have an OK sounding amp with ½ 6C33C ...[/quote]The 6C33C has only one pin that connected to both plates. Since I use ½ of 6C33C in my MF and UpperBass channels then I theoretically burn just a hal...
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The transformer in this preamp was given from a friend who want to learn how to wind transformer. If I remember correctly it started out as UBT, they were bought (when UBT was operating in the Silicon Valley) at the company swap meet. They were rejec...
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With 6C33C output run at 40W plate dissipation, this amp run much hotter than an 845 amp with output tube running at 100W. I measured the hottest point on the bulb and it is about 380F. I guess the due to short bottle , the heat spread on the ch...
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Yes, if you have a midbass horn that more or less properly built then modesty and humility of the horn setup is the key ingredient of the horn sound. When I have my old transformer 11:1 then I had the midbass horns calibrated so perfectly that you ...
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I am not too worried about the 6C33C bass, since I have other alternative. Even if lower loading will improve it, the problem is to get more power out of the 6C33C to a 40W (PSE perhaps) level to be able to drive the 12in or 15in woofer, even then th...
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[quote user="jessie.dazzle"]
I just poked around on eBay and it seems the 6c33C-B tubes are not so easy to find. There are however plenty of the model 6S33S-V. My understanding is that this is supposed to be a more durable version, intended to...
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This subject of comparing the quality of ML2 and ML3 sound is very interesting and I do not think that it will be ever observed in public. I hoverer do have interest to learns about comparative capacity between properly sounding ML2.0 and ML3. The M...
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[quote user="Paul S"]Seems like a good basic concept for a laconic PP amp, though...[/quote]
The fix bias of driver and out stages are fine. Why he need to have 1:8 input transformer. The driver stage does 32 time gain, the output stage does ...
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Romy,
No, the DAC was not set at maximum level (for best sound) while Cyrille listening to the system. It was set at normal volume for the whole system. When Cyrille dropped by, I was showing him the Field Coil open baffle speaker system which con...
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Paul,
I re-mapped your post to your older thread; I hope you do not mind…
Anyhow, I find absolutely nothing in the older ML2’ sound related to L1/L2 “X-Factor”. As I suggested in the second post of the flowing thread:
http://www.goodsoundclub.com/...
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After a few years I have again pair of Lamm ML2 in my room and I decide to take advantage and render my experience with this amp into a format of my today’s understanding. I know ML2 quiet we and used it with a number of loads. Over the time I develo...
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N-set, a friend of mine built an amp with this monstrous USSR tube. It has 3 stages and the GU81M is driven by 6C33C.Within context of driving mid or high sensitivity bass drivers, this is all you need. In comparison, his previous SET with 6C33C soun...
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[quote user="Romy the Cat"]From what you describe I can conclude that your DAC is not good. You said you use DIY wireless DAC with tube output. I do not know what wireless mean in this context, but it is not important. I also know do not like any tub...
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The Bass OPT's for my DSET have been wound. We have come back to a 1000R plate loading and into 1R the 6C33C grid clips at 9.36W and 5.8% distortion. The -0.5dB points at full power are 5.9Hz and 5kHz.A nice result really, and about where I thought...
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[quote user="jessie.dazzle"]A possibly dumb question here: When you and Paul give figures in milliamperes, where are you measuring the current (at what points), or are you extrapolating the figure? [/quote] The 6C33C current is measured in mA. The wa...
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I am sure I made a reply last night, but it is nowhere, so here it is again.44V across R22 is equivalent to 0.88A which is way too high and would require a resistor rated better than 40W. R2 is dropping more voltage than it should. I would look at ...
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[quote user="Wojtek"]" The only concern being that ML2 is a feedback amp and Mel not. [/quote] And it is exactly why Lamm is able to drive more or less successfully those sub 90dB loads but Melquiades is not. The SETs with no-feedback are VERY sensit...
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