quiddity
Responses from quiddity
| What size of Surge tank for ET2 Actually I've just gone through the physics of this and the analogy between a rigid walled tank and a capacitor doesn't hold. I think we could derive a term for the effective equivalent capacitance but it will take a bit more work and involve diff... | |
| What size of Surge tank for ET2 Presumably your aim is to filter out the pump noise, in which case the three things we need to know are: the frequency at which the pump operates, the INTERNAL diameter and the length of the air line. The Air line and the surge tank form an RC fi... | |
| Finding Pure Water for Record Cleaning - very long Inpepinnovations said: "Not to worry about BPA in the water, since there is BPA in the vinyl record! Its in the plasticizer."Could you provide a reference for this? I've never heard it before. My understanding was that Biphenol A acted as a polyme... | |
| PS AUDIO P500 as a Turntable speed controller? HevacYou said "do not use the dual f(r)eq option, AC motors do not like it, they can and will fail if used".I have no experience of running the PS Audio units being discussed so this may be true of them but it is certainly not true of frequency co... | |
| ozonated water for rinse cycle in cleaning vinyl Both responses are slightly off. The water has been treated by passing O3 through it from an ozone generator (basically an electrical arc in air). The half life of ozone in water is quite short so no dissolved ozone will remain. The purpose of the... | |
| 10 Commandments of a Vinyl Audiophile Thy vinyl, not thine vinyl. Thy ear, not thou ear. Thy is a possessive adjective, the equivalent of "your" Thine is a possessive pronoun, the equivalent of "yours" Thou is a simple pronoun, the equivalent of "you" | |
| Arm geometry and null points Here's another way of putting it: with a single pivot tonearm, the stylus scribes an arc. This arc will have at most two points where it intersects the straight line which corresponds to zero tracking error The various schemes set these two point... | |
| alternative power supply for Garrard 301 I seem to have hijacked this thread, my apologies to the OP. To prevent further hijacking, I have posted an ad in the Turntables section for Synchrotron Garrard PSU - Group Buy. Mark Kelly | |
| alternative power supply for Garrard 301 Find another nine people who want one, then call me.Mark Kelly | |
| Upgrade from TW Acustic Raven AC-3 to what? Knotless thead drive not difficult if you know what you are doing. Sorry about the pun.I used Japanese embroidery silk which worked quite well by thread drive standards but is so far behind the state of the art that I dropped it as a commercial pr... | |
| Garrard 401 PSU What's your budget? | |
| Anti skate and tonearm damping query PerrewNo that's not what I'm saying. I said I wan't going to try to explain Hertzian contact theory to you and I'm sticking to that. Mark Kelly | |
| Anti skate and tonearm damping query AxelI've just read your post more carefully and my first response was too hasty. I'm not familiar with the term "tangent trace angle" but by your description it is what I described as "true offset angle". Indeed we may have been suffereing from te... | |
| Anti skate and tonearm damping query AxelwahlYou said no groove = no offset. That's not correct. The tangent to the arc of the stylus traces on the vinyl does not pass through the tonearm pivot. Therefore there is a separate vector pasing through the same point (the stylus contact po... | |
| Anti skate and tonearm damping query Ok I can see it now. The coefficient of friction does indeed reduce with pressure but what we haven't established is that the pressure is a linear function of VTA. For that to be the case contact area would have to be constant and it isn't. I'm n... |