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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Goetz, seriously, I thought that a chance of meetig somebody from Gdansk here is zero(or actually I did not think of that at all). Since we are both in Gdansk, or at least sometimes you are, you are very welcome to visit me--I leave in the very cente...
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[quote user="Goetz"]I sincerely hope to find next time a spacy loft in Gdansk(Poland)[/quote]Goetz, when you do it, please let me know! I've just moved to Gdansk.I have a nice lofty flat there, but the space is too small for a serious acousticreprod...
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I must say I've never came in to intimate contact with cables and avoid it untill I can, so yes all my arguments are theoretical.By amplifying I ment of course voltage, not power and ass-u-med that the external noise as well as the cable distortion a...
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[quote user="Romy the Cat"] In my view the control unit is virtually empty with insultingly far distance between the step up transformer and grid of the first stage.[/quote]While I agree that they are typical "full of nothing" boxes and in no way I'd...
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[quote user="Stitch"] and I asked the shop owner:Who buys that (I didn't ask for sound quality) and his answer was fast and honest: Those who buy that instead of the third car or another sailing boat.I think, nothing changed.[/quote]In the same 90's ...
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Let's see if this design of him will get such an enormous feedback on diyaudio as his BlowJob preamp (no idea on the sonics of both though,never heard them)...
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No, Stitch-Syntax-Thomas? You pose here such an innocent bird but there are some disturbing questions left unanswered on a-gone(tm), whatsbest etc, reyou, daniel brakemeier-dertonarm and his products...i did have a glimpse of you work...(disclaimer: ...
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[quote user="Paul S"]N-set, you've certainly earned the right to enjoy your gear! Again, which SUT will you use? No practical way to measure ESR, etc. on this, I suppose...[/quote]Paul, the SUT's are Pieter's Tribute MkII. I could measure this or th...
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[quote user="Romy the Cat"]Yes, this is what I expected. That slightly fatty lower range is what I have and I do tend to like this type of response.[/quote]Thanks Romy.Yes, it seems intrinsic in the design. The above curve is simulation, but I get i...
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Fucking soundcard...I knew I should rather buy myself a good bottle of wine if I cannot afford a real equipment, but I got seduced by the "simplicity" of mesurements and price...well, I got what I paid for: ~16k input impedance of my Fuck-blaster X-f...
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Experimenting with Decca carts, I've temporaly disconected the SUT's and decided to check the RIAA calibrationand I think I have some (circuit?) problem.[quote user="Romy the Cat"]
In the end of everything I was able to get very nice response. The...
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[quote user="Romy the Cat"] Actualy I did not take the pinkfishmedia analysis too serious. I have absolutely no idea how to interpret the results of the analysis. [/quote]No one really knows at this stage (the tool is very new), apart from the obviou...
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[quote user="Romy the Cat"]This made me to pay a lot of respect to the subject of motors in TT as I concluded (looking at the straggling of my guy) that good TT motors are super rare thing.The Cat[/quote]Amen. I'm still puzzled by the strange polar p...
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I have been looking at that table for some time now. The prices went up in the lastfew years (IIRC Romy rised it by 50% from 9k to 13.5k)...no wonder with the impotency of the current industry to produce anythingreasonable, save at a reasonable price...
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[quote user="Romy the Cat"]Once again my regrets for the shity administrative work on my end.[/quote]I think you've been doing a fantastic work, Romy! One accident in such a long period is not a big deal.No really worthy posts on my side in that peri...
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...I tried to operate with one switch only but unless I employ what Paul suggests, 3 pos switch (I prefer rotary)is the easiest solution...thanks guys! ...
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I have one problem, probably trivial: when I shut the power off, the HV dies out much longer than the filaments,so the cathodes are poisoned at the switch off (on the startup I have a delay relay on HV).And this despite all that heavy bleeding on HV....
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[quote user="Romy the Cat"]It is unquestionably an ambiguous project. The topmost question that I would ask myself after this project would be the following: can Milq-biased 6E5P to be as good (sound-wise) DC driver as some vintage direct heated tube...
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[quote user="Romy the Cat"]I would certainly avoid a taper that all time runs across the wires of the transformer and constancy adjusts voltage. I do not insist that it is the best way to do the things but my experience with variac was not so encoura...
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[quote user="Romy the Cat"] I very much doubt that we need any AC line dedicated stabilizers; even though I do feel that it is good to have more or less stable line.[/quote]Well, this is a very general statement, perhaps too general? I'd say that *pu...
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[quote user="N-set"]* Line stabilization...[/quote]I took a quick look at the industrial stabilizers (Purepower and alike look quite suspicious to me given that they carry AC/DC and DC/AC convertersand claim 2kW or whatever with a very slim and compa...
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Post #14:
PP
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by
N-set
on
2012-09-26
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[quote user="Paul S"]N-set, are you pretty sure that the "direct drive" tube amp need not be PP? Does the Stax amp have +/- typical RC output? Would it perhaps make more sense to "update" the Stax amp?ATH-50 cans would sure make your life easier......
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Actually I do not have the instability issue sorted out completely...I'm talking about circuit instability now, not the tube instability. Let us imagine all tubes are rock stable.As I see it there are at least two major sources of instability, in the...
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Scooter, thank you for the warnings. I already own O2 MkI for +/-2 yrs and got to know them a bit. As I said I do not like headphones in generalbut I have no other choice. I own 2 more staxes: Sigma and Lambda Pro and Omega can do things others canno...
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Thank you Romy! Actually I've realized that when I wrote it I rather ment dynamical stability then frying the outputs. But in proper PP the even order harmonics are strongly surpressed, sothere should be no or very little change of the output OP due ...
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[quote user="Romy the Cat"]It is unquestionably an ambiguous project. The topmost question that I would ask myself after this project would be the following: can Milq-biased 6E5P to be as good (sound-wise) DC driver as some vintage direct heated tube...
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...and the heaters: CCS chain on 6E5P + AC on the output.The Stax pro bias (580V) is coppied form the Auridux amphttp://www.dddac.de/tp08.htm...
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[quote user="N-set"] Anotheraxiom was to make it DC coupled so that there is nothing but tubes in the chain.[/quote]Of course I was not very precise here: not pictured but a 1:1+1 phase splitting input transformeris inevitable...still I believe it is...
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Paul,I know the capacitance -- this is an analog of impedance of ordinary speakers.I also compare to known serious designs, like mentioned Blue Hawaii.The multiple taps on PS iron is to accomodate different output tubes. The "bypassed transformers" a...
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