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  1. analogsa

    How to tell if tweeter ribbon is damaged in a 3.7i

    In the case of ribbons there isn't a significant difference between the two.
  2. analogsa

    Vishay Z-Foil vs Audio Note Non-Magnetic Resistors

    No experience with current AN resistors yet plenty with the old Shinkoh and the magnetic AN. Nice as the Shinkoh are I find them incredibly coloured compared to the z-foils. Also less dynamic, transparent, detailed. Yet, Shinkoh are by far the safer choice. The unvarnished truth may be a bit...
  3. analogsa

    Chinese "Odin" cables

    Without going into specifics it is impossible to know whether you are right or not. It is also impossible to say anything about a cable or connector metallurgy based on photos - there are plenty of well documented cases when brass is advertised as copper as only one crude example. Even less is...
  4. analogsa

    Jerry Seinfeld: 23 Hours to Kill | Official Trailer | Netflix

    Tried watching this last night. Went through 20 minutes of lameness before giving up. Jerry minus Larry never worked for me. It still does not.
  5. analogsa

    The necessity for absolute tt speed control

    Sounds like an excellent solution.
  6. analogsa

    The necessity for absolute tt speed control

    What did you use for a pulley? The shaft itself?
  7. analogsa

    The necessity for absolute tt speed control

    Fair enough. We cannot all like the same things. My comment was directed towards Spirit. Btw, apart from an amazingly extended range of brushed DC motors Maxon also manufacture high quality BLDC motors. Some tt manufacturers use the latter which only adds to the confusion.
  8. analogsa

    The necessity for absolute tt speed control

    If i read between the lines your designer seems to have chosen an unregulated PS. Hmmm, never tried this, but it is an interesting suggestion. It clearly makes the average speed even more prone to fluctuations. Do you know what motor is being used?
  9. analogsa

    The necessity for absolute tt speed control

    Not necessarily. Some of the BLDC motors in turntables are used exactly as proper synchronous AC motors which never use any feedback and rely on the motor locking onto the driving frequency. Yet others have a tacho coil and do use a feedback control. Long term speed stability is really not an...
  10. analogsa

    The necessity for absolute tt speed control

    Something i am willing to bet you won't like much. There is a wide spread misconception that it is a kind of a DC motor. It is not. In the majority of tt applications it is controlled by pure sinewaves as if it were a normal synchronous AC motor . The original design brief assumed a...
  11. analogsa

    Has anybody else tried this or am I alone?

    The success of a passive pre depends on a myriad of factors, some known and understood such as input impedance and others being a lot more obscure. I find it next to impossible to make general statements about this, it is too equipment specific. The one thing I am certain about is that at...
  12. analogsa

    Crossover Designs without Capacitors

    Apart from the fact that they all sound different I agree, no issues :) The automatic protection against DC granted by capacitors is indeed gone, but if it were a decisive factor it would also discourage the use of active sytems and dc coupling in general. And there is always the option of...
  13. analogsa

    Crossover Designs without Capacitors

    Not sure if it qualifies, but the ancient Rogers Studio Monitor only used a single resistor for padding the supertweeter. The rest of the crossover contains chokes and caps and importantly, an autotransformer (the biggest piece of iron in the pic) instead of resistors.
  14. analogsa

    Best phono stage?

    This is just silly. Clearly the current of the cartridge will be flowing according to Kirchhoff's law: the better ground will get the most current. If the ratio is 100mohm : 0.1mohm, then the virtual ground will be getting 0.1% of the current. What would be much more reasonable is to play a...
  15. analogsa

    Best phono stage?

    Still waiting for Atmasphere to prove that a cartridge may be seeing a 1k load cause there is a "common confusion". Numbers please, not general Wikipedia articles. This is basic 101 electronics, not rocket science.
  16. analogsa

    Best phono stage?

    Sorry but this does not make sense to me, neither does your numerical example give any indication of this. How do you come up with the 1000ohms? Nor does the presence or absence of fets make any difference. Provided there is a sufficient OLG the positive and negative inputs are always...
  17. analogsa

    Best phono stage?

    All current input stages work on the same principle: the input is a virtual ground. So, yes, the cartridge is effectively loaded with a dead short. Unless 100mohm is not a dead short in your view. To me these phonos sound very dynamic, but perhaps unsurprisingly, a bit overdamped.
  18. analogsa

    I am sick of failing amplifiers

    You make it look like an issue with the triodes, while they would happily amplify from zero to many MHz. The 10k and 20k transformers otoh...not everyone can wind.
  19. analogsa

    Is there a streamer front end that doesn't cost mountains!?

    Cannot think of a technical reason for that. It looks like an ugly attempt for market segmentation. Who in their right mind would buy anything with a hdd today?
  20. analogsa

    Is there a streamer front end that doesn't cost mountains!?

    Why do you think that it cannot be installed?
  21. analogsa

    Is there a streamer front end that doesn't cost mountains!?

    There is quite a gap between that stage and getting an even remotely pleasing sound. Why do you think so many insist on keeping their old optical players?
  22. analogsa

    Is there a streamer front end that doesn't cost mountains!?

    I have a vague recollection of seeing a JLSOUNDS board in some Lampi.
  23. analogsa

    Is there a streamer front end that doesn't cost mountains!?

    Cannot think of a more sensible advice. Just add linear power supplies for all rails, make sure cooling is all passive, stop all non essential services and processes if using windows and you are 90% up there with the best. None of this is rocket science.
  24. analogsa

    Panzerholz - its application in audio systems

    And they should. For the customers who insist on bullet proof instruments. ;)
  25. analogsa

    I am sick of failing amplifiers

    For anyone who has spent time in this hobby it is clear that a good tech within a driving distance is essential to have on a speed dial. And by good i mean someone with the specific high end experience. Surely this is not so hard to arrange in most urban locations.
  26. analogsa

    Network Improvements and their Impact on Sound Quality

    May I suggest a simple experiment which can illustrate how much a particular type of connection or interface is contributing. My server is a windows box running jriver but other setups with memory playback can also be used. It is actually very simple. Load a track or album in ram and...
  27. analogsa

    Linear Power supply for turntable motor

    Interesting. Ironically, i did not test the Phoenix box with a linear supply and promptly let it go after the briefest attempt to use it. Perhaps what i was hearing was the result of the switcher.
  28. analogsa

    Linear Power supply for turntable motor

    The degree of relevance depends upon the type of motor. A brushed DC motor is as sensitive to the raw dc supply as any other audio component. Brushless DC (BLDC) or AC motors may use class D amps and dc:dc converters in their control circuits. A great linear power supply cannot be of much help...
  29. analogsa

    Linear Power supply for turntable motor

    Oversized, good sounding transformers, chokes, low noise rectification, good sounding capacitors and resistors, good sounding connectors and very importantly - wire is what makes a great sounding audio supply. Lab equipment understandably pays no attention to any of these and instead offers...
  30. analogsa

    dartzeel converter??

    Those used horrible materials. The coax will always remain a compromise because of the need to use the braid as a signal carrying conductor. And because of geometry. My point was that newer, well regarded digital cables are pretty close to what a really good analogue BNC cable could sound...

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