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In Reply to: RE: About that Counter-intuitive.... posted by amioutaline? on September 21, 2013 at 15:34:45
I use the VPI azimuth ears at the base of the wand also - exactly as you do. I do not use the Soundsmith device but I have attended up to 4 audio shows a year including RMAF and Peter's Counterintuitive CW is often present. It looks much more complicated than it really is. If you do not care about repeatibilty of settings, you just clip it onto the VPI CW and twist left or right to zero in azimuth...of course, you do this after you have dialed in VTF with the Soundsmith weight attached. Since azimuth is going to vary from LP to LP, all those electronic devices are rather silly...IMO. I use the VPI metal rod & a mirror. More often than not just the mirror.
Christopher
Qui tacet consentit.
Edits: 09/21/13 09/21/13Follow Ups:
Hi Seadog,
If I were you, I'd simply tilt my cartridge one degree each way and listen. If you hear a significant difference then buy a Fozgometer. It does the job correctly, but I've never heard a significant difference from adjusting azimuth away from level. Of course, that doesn't mean much these days because everyone hears differences that I don't hear. Therefore, I would recommend conducting some simple tests of your own before spending a bunch of money. Even better, perhaps SgreenP@MSN.com would lend you his Fozgometer to try out before buying one.
Good luck,
John Elison
Hello John, I assure you that I have no intention of buying or using the Fozgometer. If I was going that route I would simply use the oscilloscope we have in the shop.It is my understanding that a certain USA turntable manufacture who you from time to time engage in spirited back-&-forth with uses the mirror/rod/ears setup procedure. As you know, I have seen many TT dealers at the shows set up TT's just as I do. No doubt the electronic meters provide an important service. Notwithstanding, Bob & I have probably set up close to 100 TT's (most VPI's) using the "old school" technique.
Besides, azimuth will vary with each LP.
After the Classic 4 returns from duty at RMAF we will work on the Effectice Mass project regarding both the 10.5" & 12" 3-D arms we have been discussing. I did not take a photo of the 10.5" 3-D because it was still packed from the Washington DC show. We have already re-packed the Classic 4 in its traveling Pelican Case as it will leave for Denver a week from Monday.
Hope you are well my friend. Oh, Heard from Ken Willis the protractor manufacturer a week ago. He has a new job which brings him to the Beaches of NC & he plans to come by. You & Ken had some great conversations at the Chicago show...wasn't it Chicago?
Christopher
Qui tacet consentit.
Edits: 09/22/13 09/23/13 09/23/13 09/23/13 09/25/13
Absolutely
Hi Seadog.....I can't tell you enough of the importance of the Fozgometer. Though you think you have your arm precisely set for azimuth with the rod..even a little off makes a very large difference in the sound. If you don't want to buy one, then borrow one from someone.
Can Azimuth be adjusted with a oscilloscope?
Yes. It works on the same principle as the dedicated meters just not quite as compact. You can adjust to null or least crosstalk. John Elison has covered this in several of his writings.I have seen some very compact 'scopes on EBay that may prove more convenient to use. If you already have an oscilloscope that is the way to go. However, it is not worth buying one just this one purpose.
mini 'scope: http://www.ebay.com/itm/SainSmart-ARM-DSO201-Nano-Mini-Portable-Pocket-Sized-Digital-Oscilloscope-Kit-/280801651529?pt=BI_Oscilloscopes&hash=item4161152b49
Christopher
Qui tacet consentit.
Edits: 09/26/13 09/26/13
An oscilloscope doesn't have the sensitivity to measure directly from the phono leads. You must measure at the output of your phono stage. You can then measure crosstalk and adjust azimuth to minimize crosstalk. You can also measure the phase of the crosstalk. Here are some examples.
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