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In Reply to: RE: Null points for 7" discs? posted by John Elison on July 08, 2017 at 15:31:58
I appreciate your contributions guys but no need to fight!
Follow Ups:
We're good! Or at least I think we are ;)
This is just "creative dissent" (mental sparring) and John and I do this from time to time...
In all seriousness, the take home point for you is to choose the modulated envelope that you find most common in your collection.
Use John's formulae to calculate your null points. In the absence of any measurements, by all means go for John's recommendation.
My collection has a significant proportion cut further in and LOUD so my optimisation takes that into account and it is worth pointing out that the RIAA standard is not the only standard (there are country specific standards) and the minimum radius specified in John's optimisation is not an absolute hard limit based on an actual engineering constraint for functionality. In a standard, the wording is critical in determining a specific requirement vs a guideline. In some cases, the clauses are open to interpretation - the minimum radius being an example.
Regards Anthony
"Beauty is Truth, Truth Beauty.." Keats
We just have a difference of opinion regarding tonearm alignment. ;-)
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