jlsemrad
Responses from jlsemrad
| Technics SP-10 mkII speed adjustment question To clarify the design evolution on the Porterhouse plinths, I will start from the beginning. In August of 2007 I built the first plinth to Albert's specifications from Baltic birch covered in wenge. It can be seen here:http://farm9.staticflickr.co... | |
| Albert Porters after market panzerholz plinths One of the problems with measuring turntables today is that the tools for doing standard DIN tests are no longer available. Sure you can measure noise with an unmodulated groove on a test record, but then you'd only have a number and no meaningful... | |
| Albert Porters after market panzerholz plinths On the MkIII, the Cu-180 mat isn't a problem. It's a bit iffy on the MkII, however. It's not about the total mass of the platter but rather its moment of inertia. The amount of correction the MkII servo system makes in case of speed variance is re... | |
| Albert Porters after market panzerholz plinths Also my understanding of the panzerholz material used in Albert's plinths is that it is very rigid but lower mass than comparable standard wood materials, so I'm not sure that adds up either.The Panzerholz used in Albert's plinth is very dense. It... | |
| Albert Porters after market panzerholz plinths Aren't the two tables best optimized with different tonearm, and cartridge plus also set up and calibrated differently? Any combo of these could account for a difference. Not to mention dirt accumulated on the stylus, etc.It's not as though we wer... | |
| Albert Porters after market panzerholz plinths As an example, we played a Bill Evans Lp that always sounded fabulous with the Walker. But when played on the Technics, a particularly complex and dynamic passage from the piano was suddenly controlled and articulate rather than muddy and garbled.... | |
| Albert Porters after market panzerholz plinths The Panzerholz plinths sold by Albert are designed strictly to damp vibration from the cogging action of the powerful DC mother which by necessity is in communion with the platter and the rest of the chassis. In no way is there a claim that it wil... | |
| Albert Porters after market panzerholz plinths Perhaps trounced was too harsh a word, but in fact the Technics won out. The judgement and final conclusion were made after many weeks of care listening, discussion, and evaluation by a diverse group of individuals, not a weak one in the bunch who... | |
| Albert Porters after market panzerholz plinths I don't even think it would be correct to deduce that the drive systems (DD vs belt) made the most difference in the test.It would be reasonable, however. There is a great deal to be said for tight control of the platter's rotational velocity dur... | |
| Albert Porters after market panzerholz plinths In our case, the power of the direct drive motor made a big difference in keeping up with dynamic passages on certain records. The superiority in that regard was very evident. The background was blacker with the Technics even though most consider ... | |
| Albert Porters after market panzerholz plinths that test IMHO was invalid because there were at least 2-3 different parameters that had influence in the quality performance that preclude a precise answers: different tonearm, different arm board and different tonearm wire.Be that as is may, the... | |
| Albert Porters after market panzerholz plinths Nandric, I understand that. I am a person of less than modest means myself. My point is that the creation of an effective plinth is more than just the application of idle woo. There is a lot of work involved and for Raul to casually dismiss it as ... | |
| Albert Porters after market panzerholz plinths There is no cheap way out for an effective plinth. It took many hours to develop Albert's plinths and so far many, many months of listening. The first plinth made from Baltic birch was very good and in it the SP-10 MkII trounced the Walker, using ... |