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Numark TTUSB tonearm adjustment
rocket_pc
post Dec 11 2009, 22:03
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I have first browsed the wiki for this, though only a few minutes. My question is about adjusting the tone arm on the Numark TTUSB. Can anybody tell me where there are instructions on adjusting the counterweight on the tone arm of the Numark TTUSB and adjusting the anti-skate mechanism?

I got the turntable yesterday. The instructions in the operator's manual is insufficient, with only a few sentences on the subject that seem very ambiguous to me.

The manual says,
QUOTE
...there should be a feeling of weight and resistance when the head shell is raised and lowered. Begin rotating the counterweight clockwise (away from the pivot point) until the weight and resistance feeling is gone. If done properly, the tone arm will pivot with very little resistance back and forth indicating that there is exactly 0 grams of stylus pressure. With the counterweight in its new position further away from tone arm pivot point, grasp the scale ring of the counter weight and rotate it until "0" is in the vertical position. Finally, rotate the counterweight (and scale ring) counter-clockwise (towards the pivot point) until the desired amount of weight is reached. If the scale rotates 360 degrees beyond the zero point, the new scale ring reading should be added to 3.5.

I don't understand these instructions at all. I remember seeing somewhere last month, when shopping for this, mention of some website or other with instructions on adjusting the tonearm and antiskate functions.

Thank you, in advance, for your attention on this subject.

Don

This post has been edited by greynol: Dec 11 2009, 22:04
Reason for edit: Please use the default font. Placed quote in the proper container.
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rocket_pc
post Jan 10 2010, 08:59
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Thank you for your reply, cliveb. I hope you understand my absence - Christmas holidays... Didn't get the xmas LPs converted to digital, either. Was out of time, last week before Christmas, to get the recording system in order.

Anyway, I would like to ask about the "blank record" that was mentioned here, before this thread expires. Is there a place that I can purchase a blank record like this, and stylus/anti-skate instructions?

Thank you for your help on this subject.


Don

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cliveb
post Jan 10 2010, 10:52
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QUOTE (rocket_pc @ Jan 10 2010, 07:59) *
Anyway, I would like to ask about the "blank record" that was mentioned here, before this thread expires. Is there a place that I can purchase a blank record like this, and stylus/anti-skate instructions?

The force that draws the stylus towards the centre of the record is due to the pressure exerted by the groove sidewall. So a record with no grooves doesn't help. If you're serious about setting antiskate correctly, you need to get a test record with high level tones cut at the outer, centre and inner parts.
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rocket_pc
post Jan 10 2010, 12:26
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QUOTE
The force that draws the stylus towards the centre of the record is due to the pressure exerted by the groove sidewall.


cliveb, You said that "The force that draws the stylus towards the centre of the record is due to the pressure exerted by the groove sidewall." Yes, but the turntable has an antiskate function that keeps this from occurring. Could you tell me where I can find the blank record or special record, that you mention, for conducting this test, and a reference for carrying out this test?

Thanks.

Don

This post has been edited by JensRex: Jan 31 2010, 13:36
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cliveb
post Jan 10 2010, 15:08
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QUOTE (rocket_pc @ Jan 10 2010, 11:26) *
cliveb, You said that "The force that draws the stylus towards the centre of the record is due to the pressure exerted by the groove sidewall." Yes, but the turntable has an antiskate function that keeps this from occuring. Could you tell me where I can find the blank record or special record, that you mention, for conducting this test, and a reference for carrrying out this test?

Perhaps I didn't explain things clearly enough. By "blank record" I took you to mean one without any grooves cut in it. This won't work. You need to get a test record with a signal cut into the grooves designed for this purpose. I personally use a test record called "HiFi Sound HFS75". One nice feature of HFS75 is that it has antiskating cuts at the outer, centre and inner portions of the record, allowing you to find the best compromise. (The ideal amount of anti-skating varies across the record). However, I don't believe HFS75 is available any more. HiFi News do a test record, but I'm not sure exactly what cuts it has. http://www.needledoctor.com/Brand-Stores/LP-Test-Records has a few test records listed. One of them, "Ultimate Analogue Test LP" looks to have some useful stuff on it (but only one antiskating test cut, at the outer edge of the LP).
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Posts in this topic
- rocket_pc   Numark TTUSB tonearm adjustment   Dec 11 2009, 22:03
- - DVDdoug   I don't have that turntable, but the instructi...   Dec 11 2009, 22:47
- - rocket_pc   Thank you for the reply, DVDdoug. I didn't se...   Dec 12 2009, 23:12
- - rocket_pc   Thinking about this, once again, adjusting the ton...   Dec 13 2009, 05:30
|- - MichaelW   QUOTE (rocket_pc @ Dec 13 2009, 16:30) Th...   Dec 13 2009, 06:47
- - rocket_pc   Thanks for the reply, Michael. Okay, now I unders...   Dec 13 2009, 21:24
- - MichaelW   I can't give a reasonable explanation of anti-...   Dec 13 2009, 21:28
- - pdq   As the record turns, the needle dragging in the gr...   Dec 14 2009, 00:11
|- - cliveb   QUOTE (pdq @ Dec 13 2009, 23:11) As the r...   Dec 14 2009, 09:49
- - rocket_pc   Thank you for your replies. Michael, the google s...   Dec 14 2009, 01:47
- - Axon   Antiskate is complicated, and different instructio...   Dec 14 2009, 04:19
- - Axon   Adjusting by ear means adjusting both the tracking...   Dec 14 2009, 11:40
- - rocket_pc   I could just "adjust by ear" - listen to...   Dec 14 2009, 19:47
|- - cliveb   QUOTE (rocket_pc @ Dec 14 2009, 18:47) I ...   Dec 15 2009, 09:43
- - rocket_pc   Thank you for your reply, cliveb. I hope you unde...   Jan 10 2010, 08:59
|- - cliveb   QUOTE (rocket_pc @ Jan 10 2010, 07:59) An...   Jan 10 2010, 10:52
|- - rocket_pc   QUOTE The force that draws the stylus towards the ...   Jan 10 2010, 12:26
|- - cliveb   QUOTE (rocket_pc @ Jan 10 2010, 11:26) cl...   Jan 10 2010, 15:08
|- - rocket_pc   QUOTE However, I don't believe HFS75 is availa...   Jan 10 2010, 16:41
- - rocket_pc   Hi cliveb, Thank you for your reply. I've go...   Jan 12 2010, 06:18
|- - cliveb   QUOTE (rocket_pc @ Jan 12 2010, 05:18) I ...   Jan 12 2010, 09:34
|- - Arnold B. Krueger   QUOTE (rocket_pc @ Jan 12 2010, 00:18) I ...   Jan 12 2010, 14:09
- - rocket_pc   There shouldn't be too much wear from testing,...   Jan 13 2010, 00:30
|- - cliveb   QUOTE (rocket_pc @ Jan 12 2010, 23:30) Th...   Jan 13 2010, 10:49
- - Axon   The Ultimate Test LP is also worth looking at, and...   Jan 13 2010, 00:31
- - rocket_pc   Hi audiophiles, Thank you for your replies, Clive...   Jan 21 2010, 06:39
- - Knowzy   QUOTE (cliveb @ Jan 12 2010, 01:34) You...   Jan 21 2010, 21:19
|- - cliveb   QUOTE (Knowzy @ Jan 21 2010, 20:19) A bet...   Jan 22 2010, 13:27
|- - paulhyland   QUOTE (cliveb @ Jan 22 2010, 07:27) QUOTE...   Feb 14 2012, 20:30
|- - Arnold B. Krueger   QUOTE (paulhyland @ Feb 14 2012, 14:30) Q...   Feb 15 2012, 14:41
- - rocket_pc   Hi Knowsy, I believe that you're the guy whom...   Jan 22 2010, 02:16
- - Knowzy   QUOTE (rocket_pc @ Jan 21 2010, 18:16) Hi...   Jan 22 2010, 06:27
- - Knowzy   QUOTE (cliveb @ Jan 22 2010, 05:27) I res...   Jan 22 2010, 19:06
- - rocket_pc   Thank you very much for your replies. What I thin...   Jan 23 2010, 05:23
- - Knowzy   QUOTE (rocket_pc @ Jan 22 2010, 20:23) Wh...   Jan 23 2010, 22:09
- - rocket_pc   Okay, I won't get that. How can they they eve...   Jan 23 2010, 23:14
- - Knowzy   QUOTE (rocket_pc @ Jan 23 2010, 14:14) Ho...   Jan 23 2010, 23:28
|- - arranzio   Hi Rocket I just arrived here googleing, looking ...   Jan 29 2010, 12:59
- - Knowzy   Hi Albert, Welcome to HA. That is a lot to diges...   Jan 30 2010, 02:05
|- - arranzio   Thanks for your comments, Jeff. Yes pretty long, ...   Jan 30 2010, 02:34
- - rocket_pc   Hi all, I aggree that this Numark is a lousy turn...   Jan 30 2010, 18:15
|- - cliveb   QUOTE (rocket_pc @ Jan 30 2010, 17:15) Th...   Jan 31 2010, 10:54
- - rocket_pc   Hi cliveb, I wouldn't conclude that this Num...   Jan 31 2010, 12:05
|- - cliveb   QUOTE (rocket_pc @ Jan 31 2010, 11:05) I ...   Feb 1 2010, 10:39
- - Knowzy   QUOTE (rocket_pc @ Jan 30 2010, 09:15) Th...   Feb 1 2010, 20:40
- - rocket_pc   Thank you for your replies. I've got a couple...   Feb 2 2010, 06:23
- - rocket_pc   My digital camera is malfunctioning. Reading from...   Feb 3 2010, 01:34
- - Knowzy   QUOTE (rocket_pc @ Feb 2 2010, 16:34) Rea...   Feb 3 2010, 06:37
|- - cliveb   QUOTE (Knowzy @ Feb 3 2010, 05:37) I...   Feb 3 2010, 10:01
- - rocket_pc   Thank you for your replies. Jotted down the info ...   Feb 3 2010, 17:29
- - Knowzy   QUOTE (rocket_pc @ Feb 3 2010, 08:29) Hav...   Feb 3 2010, 23:08
- - rocket_pc   Hi all, I'm back, for a moment. Up front, t...   Feb 10 2010, 10:48
|- - rocket_pc   PS: The Shure cartridge that you mentioned in thi...   Feb 10 2010, 10:56
|- - cliveb   QUOTE (rocket_pc @ Feb 10 2010, 09:48) Ca...   Feb 11 2010, 19:21
- - Knowzy   QUOTE (rocket_pc @ Feb 10 2010, 01:48) Th...   Feb 11 2010, 07:50
- - rocket_pc   Thank you for your reply, cliveb and knowsy, It w...   Feb 11 2010, 23:09


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