Now that I think about it, I asked a dumb question. Of course a single set up protractor can have any 2 nulls drawn or etched on it. I was thinking from the standpoint of protractor with a single standard alignment, hence the question. Is that Audio Beat a review or a marketing business? Probably both. Gregory did a nice sales job with only a deception or two, but the only thing that really interests me is the UNI-P2S, and he only mentioned it. Follow the link and you have to download. It's probably a fancy Dennesen tonearm locator, just as all these alignment grid/pivot pointer protractors are based on the SoundTractor, only they're better. Thanks for the link Folkfreak. Those Dertonearms look interesting. A little pricey maybe. Regards, |
Pryso, Dennesen made another device to accurately locate the arm mounting hole. It was like a 2 sided ruler with a long slot in the middle. One end tightened over the spindle while staying at zero. The other end had a clamp where you could insert a pencil or stylus to subscribe an arc on the armboard. The clamp could be tightened anywhere along the slot to accurately locate mounting hole. I believe the SoundTractor was the first device of its kind, and the prototype for the ones like it - pivot pointers. A GeoDisk works on the same principle but with a different kind of pointer. With some of these newer ones you have more options for alignments and they might be easier to see. There is an inexpensive magnifier you can pick up. It's called a linen magnifier. They come in various powers and stand at an angle - could be helpful. Get low power though, like 5X ? Stronger lens is hairier, has a shorter focal length and is more liable to optical/user error. I use reading glasses of various strengths. Magnifiers and uneven lighting can mess up a careful alignment and I always double check with a conventional protractor. Depending on your arm sometimes the pointer goes off center pivot, you misalign, and the pointer goes back and looks okay when you put it back in the arm rest. 30 years ago a metal SoundTractor was $100 and the tonearm hole locator was $200.To answer your question, no reason to upgrade with your situation. An arc protractor is predicated on the proposition that your arm is perfectly mounted - factory. Otherwise it's not only useless, you'll wind up misaligned. Not recommended for DIY tonearm mounts. Regards, |
The Mint is an arc, custom made for each arm? If you want an arc check this out: http://conradhoffman.com/chsw.htm I can only reiterate my caveat about arcs. If you're swapping arms and using an arc your alignment is most likely off. It should be obvious as to why. I must say Harry was right. We're on page 7 now and precious little about different arms, but lots on care and feeding the Kraken. **Actually, the full name is Crazy Bill The Eel Killer. Interesting story, if anyone cares.** I'd be interested. Regards,
|
Thanks Crazy Bill, Eel Killer. nice story |
Pryso, Dennesen sold a separate device for dealers. I couldn't remember the name. I searched for a photo, but couldn't find one. It was called the Pivotram and used for locating arm mount holes. I do the same thing as you - reverse the SoundTractor bar and use a ruler to measure distance. It's easy for me to correct for the offset of the bar and get a pretty accurate mount hole. There is usually a little play in the fit of the arm pillar into the hole, especially with DIY drilling. When using a pivot pointer device like this to align, it doesn't matter if your mounting distance is off a hair or two, as long as you can align to the grid with the pointer in correct position, your alignment is good. A SoundTractor or Feikert works where the pivot is actually located, not where it theoretically should be. If your arm mounting distance is off a bit , and you get a good alignment, then your offset angle will also be off a hair. Here's an old discussion about it. My user name was lfleib. http://www.vinylengine.com/turntable_forum/viewtopic.php?t=10827 With most pivoting arms the cantilever is not pointing to a pivot, due to offset. The discussion of maintaining mfg. offset is arm specific, and should be limited to that IMO. RE: the quote - I tend to think the Brits should be blamed for most things, but I don't know about the Japanese use of the Stevenson alignment. That seems a bit of a stretch. The use of Stevenson was a very sensible thing at the time, but became a sort of default standard along with 15mm overhang. If you have an arm designed for Stevenson, there are some options. Part of the quote was linking Dynavector to Stevenson. It is not. Regards,
|
Chakster, If dreams were wishes, beggars would ride. Go back a few pages and look for Griffithds on 801, 7045. The rest is all gobbledygook and purloined poser poison. Regards, |
Dover, Stevenson - 60.325, 117.42mm Baerwald - 66.0, 117.42mm Loefgren(B) - 70.3, 116.6mm Dynavector - 60.1, 116.5 Notice anything unusual? Alignment is defined by a standard, not a test record. Inner null is standard lead-out groove. Even if you use IEC (or whatever it is) the numbers are very close and the relationship between inner and outer null is the same, only moved slightly, just as UNI nulls are Loefgren B moved in 5mm, with a variance of 0.1mm.between the nulls. It seems to me, the suggestion to align to Stevenson is ill conceived. Further demands to change to one of the Loefgren alignments by changing mounting distance, is bizarre. I've already posted this information and I have to agree with Lewm, life is too short. Regards, |
What are the factory nulls for Dynavector? Anyone ?? |
Dover, I meant to say, Stevenson inner null is standard lead-out groove. That might help understand a particular alignment's relationship with the various parts of a record. I'm sure you know the design goals of each alignment, but any 2 null points are a "good" alignment. If you ask why Loefgren B is lowest total error, and why A is lowest average, then you can figure what is traded off. Maybe a graph helps see it. Raul, you made some basic assumptions that are not necessarily true. I didn't discuss it with you because it seems fruitless and I'm under no obligation to do so. It's good you gave opinions on some arms. |
Raul, You must be kidding. I'm beginning to wonder if in fact, you have a brain cell. You go back to '13 to quote Dover? dover: """ do you have right now on hand the 505?
If yes just try Baerwald or Löfgren alignment changing the P2S distance from Stevenson. Then listen and listen in between ( B, L and S alignments. ) and return here to share your experiences there.
If not, your post is useless and futile this time. """
There's only one reason you'd write something so stupid. I agree with Soundsmith. You're an undeclared manufacturer using this forum to promote your private sales. I wonder how many of your preamp sales and used cartridges exchanges paid a fee to AudioGon. I suspect you dine in luxury and fail to leave a tip. I was going to explain where I think you went wrong in your basic assumptions, but upon further reflection, I think not.
|
If yes just try Baerwald or Löfgren alignment changing the P2S distance from Stevenson. Then listen and listen in between ( B, L and S alignments. ) and return here to share your experiences there.""
You left out the stupid part (above). Your ignorance is only exceeded by your arrogance. DV is none of those alignments. I posted that at least twice. Remember when you came on VE years ago and we had a running battle? You're just as ignorant now, as then. Every MC was hopelessly distorted and you heard them all. You're ridiculous. Using a forum for private sales and not paying a fee is a separate issue. I wonder what the new owners of this site will think of such behavior? fleib, neobop, lfleib
|
Lew, What are you a champion for the mongoloids? I don't expect Raul to be anything other than what he is, not anymore. My intent is to get him booted from this forum for unethical behavior. I think he should pack up his stories of scientists and electron microscopes and sell them elsewhere. For a number of years I wouldn't post on this forum because of Kraken. When I asked Dlaloum why he came here when a horrible kraken is afoot, he said because you were talking about the carts interesting to him. I relented and joined the legion of the kowtow, the kraken kowtow club, if you will. I see by your comical alignment solution you desire his retention here. I have done nothing as of yet regarding this matter, other than give some perspective. It's early and the cat is settling in and I need some coffee, a much more important matter. I have misgivings. fleib |
All right Ladies, calm down. Lew, I had no idea you drank tea out of Waterford china with your pinky in the air. Aceman, I assume you're familiar with the fallacy of quoting out of context, in order to let me preach. Smart move, but I'm not a preacher. For those unfamiliar, read the rest of my post and see how much I've done and the importance I give this matter. Interesting post Kirkus. I used to have a Miles record on Columbia that came within about 5mm of the label. I say used to, because I lost it in a storage place flood in '95 which I refer to as the Great Flood - 1400 records approx. Shit happens. I have/had a few more which went beyond the lead out groove, but nothing like that one. Like I said, I'll be moving on, but I might be reading. Titanium or Boron? |
Lewm, Point missed. That's an affirmative anyway. ghost writer out. |
Dear Raul, I found an email, quite old, in an address used for other matters and one I almost never check. I was wrong and should have taken your touching greeting at face value. Enjoy the music,
|