Tom C
Major Contributor
I’d like to get a higher degree of precision in my cartridge alignment, and am wondering if anyone has experience using a ‘scope versus software like Analogmajik or Feickert.
What type of measurement software, do you mean something other than Analogmajik?
Thanks. As Scott mentioned, there are many choices. ARTA is a good starting choice (I think they have a free trial but otherwise costs 79 Euros) and easier to learn some of the others. http://www.artalabs.hr/What type of measurement software, do you mean something other than Analogmajik?
Thank you Amir. BTW, this is such an awesome site. There has never been anything else like it.
I’d like to get a higher degree of precision in my cartridge alignment, and am wondering if anyone has experience using a ‘scope versus software like Analogmajik or Feickert.
I have a two-year degree in electronics, worked as a tech for a while repairing guitar amps and PA’s, then in a factory that made machine tools. Later, I studied medicine (I’m now a radiologist), so I had to learn some physics, MRI, ultrasound and about X-ray tubes and power supplies.What is your technical background? As Scott said you could use an open-source math package like Python + Octave or whatever but need a fairly high knowledge base.
I’m not an engineer, so it would be a learning curve, but I like to think I’m teachable.
Makes me wonder how cutting-lathe heads were aligned and to what specs?
Dr Feikert's site is down for maintenance but there is a link to a Youtube that shows the process nothing there that could not be duplicated easily. Mostly high school geometry involved in the stylus/groove wall/motor assembly. Don't know where the little spirit level came from but you could DIY one sacrificing a cheap level.
If all you want to do is get the channel balance and phase correct, I can't see why you couldn't use a scope if you have one. You will need a test record like the Analog Productions Test LP which has tracks with isolated left and right test tones, as well as the mono in phase track. https://store.acousticsounds.com/d/...imate_Analogue_Test_LP-Turntable_Set_Up_Tools
The problem there is that you want to differentiate between the real channel imbalance due to the L/R gain of the motor and the imbalance due to the alignment (crosstalk).
OK, cool. Can you please expand on that a little?
If you can find a description of Dr. Fiekert's technique he claims a better result using measurements that would be hard with a scope. I'm not sure how much a difference if any it makes.
I suspect that with a little care the scope or fozgometer technique is good enough for most people.
Wombat said:
Makes me wonder how cutting-lathe heads were aligned and to what specs?
We all wonder that. Buried in some threads at diyaudio are a lot of test LP measurements that were part of an effort to do a group buy of a new test LP. The bottom line is that there are probably no recording engineers that are going to tinker with or tweek their equipment to our specifications.