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Post by rocky on Aug 8, 2007 14:53:40 GMT -5
When I take the reproducer that's in the C-250 and put it in the C-450, the limit pin will hit the limit loop with great frequency. However, there is no problem when the reproducer remains in the C-250 and there is no problem with the reproducer that's in the C-450. Not a major issue, but I'm curious as to why the reproducer presents a problem in one machine and not the other. Rocky
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Post by neophone on Aug 8, 2007 16:29:41 GMT -5
Rocky,
Where does it hit the limit loop? Top and/or bottom or the sides? If it's top or bottom maybe the reproducer is taller than the other one?
Regards, J.
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ultona
Full Member
It's Not Easy Bein' Green
Posts: 164
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Post by ultona on Aug 8, 2007 19:58:41 GMT -5
Might also be the horn height - that *can* be adjusted...
Sean
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Post by maroongem on Aug 9, 2007 1:01:45 GMT -5
It has to be adjusted on the horn support. Not a simple task to undertake if you've never done it before. Not to mention, that's a good way to chew up your records if the reproducer weight/stylus can't go any higher.
Bill
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Post by neophone on Aug 9, 2007 2:46:41 GMT -5
Gents, That what I was thinking..... if it's hitting the top and not the sides. I just put together a couple of photos for someone on the Phonoland site regarding this. Checkout the London Upright LU-37... thread. Fellows let me know if I screwed anything up. Regards, J.
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Post by gramophoneshane on Aug 9, 2007 5:41:37 GMT -5
I also noticed on the reproducer that came with my A100- which has a serial no. starting with A, that the retaining ring is deeper than in my other two. I then discovered that the thread that takes the retaining ring is actually deeper into the top of the reproducer. In other words, the diaphram sits higher in the reproducer by a mm or 2. The silk link is also equally longer to compensate for the higher diaphram. Maybe one of Rocky's reproducers has had a shorter replacement silk link put on the deeper sitting diaphram, and the horn has been adjusted to suit, but then is throwen out of wack when put on another machine. Really, two identical reproducers should be able to be swapped without adjusting the height of the horn. What are the prefixes of the serial numbers on the two reproducers Rocky? And are they both manufactured the same- like same weight design, the size and shape limit loop, thickness of gaskets etc. Do you have any trouble when you use the C450 reproducer in the C250?
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Post by rocky on Aug 9, 2007 7:14:23 GMT -5
Shane, I'll check the serial numbers on the reproducers when I get home tonight. Actually, I don't know where the serial numbers are inscribed, but I will look for them.
And I will leave the reproducers in the machines with which they are compatible.
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Post by gramophoneshane on Aug 9, 2007 7:24:25 GMT -5
You can see the numbers if you look between the weight and main body of the reproducer on the tail of the body.
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Post by neophone on Aug 9, 2007 14:39:37 GMT -5
Shane, I'll check the serial numbers on the reproducers when I get home tonight. Actually, I don't know where the serial numbers are inscribed, but I will look for them. And I will leave the reproducers in the machines with which they are compatible. Rocky, Right here. Hope this helps. ;D Regards, J.
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Post by maroongem on Aug 10, 2007 1:29:05 GMT -5
People. The standard thickness of an Edison DD was .250. Sure, there are some that are thinner and perhaps a couple of thou thicker, but .250 is standard. Now you may notice that your limit pins and/or limit loops are bent. This was to allow the limit pin to stay basically centered in the limit loop. AS John showed you, the horn support can be raised or lowered to adjust the reproducer/record compatibility. These machines were all adjusted for each horn/reproducer when they left the factory. Can you slap another reproducer on a machine? Most times you can, not a problem. There should be enough tolerance allowance to allow this. But on rare occasions, you may have to adjust the horn height or bend the limit pin/loop. The length of the silk link has no bearing on the positioning of the reproducer on the record.
Bill
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Post by gramophoneshane on Aug 10, 2007 15:41:17 GMT -5
So are you saying if you put a thread that was 10mm longer than it should be, into a reproducer, it wouldn't alter the position of the pin in the loop??
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Post by maroongem on Aug 17, 2007 12:05:43 GMT -5
So are you saying if you put a thread that was 10mm longer than it should be, into a reproducer, it wouldn't alter the position of the pin in the loop?? In hanging down as if in play, no. The limit pin will only go as far as the bottom of the loop. In the other direction, the rear of the stylus bar at the head will be stopped by the underside of the weight. What you will get by having a link too long is diminished sound. I found this out recently when the silk link in my Ultona broke during a move and I had to replace it with an Edison silk link, which is considerably longer than the Brunswick link. I tried it with the link as found and the sound was really low, so I removed it and shortened it up to the original length and it now plays fine. Bill
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