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Samples from USB Turntables: Audio-Technica AT-LP2D-USB
Knowzy
post Feb 18 2009, 08:22
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Turntable Details
Audio-Technica AT-LP2D-USB
Street Price: $100 (US)
AT3600L Moving Magnet Cartridge
Belt Drive
Fully Automatic
Wow and Flutter: <0.25% (WRMS)
S/N: 50dB unweighted
Platter: Aluminum
Tracking force: 4.54g (Measured personally)
More in turntable guide


Photos











The Sample Clips
For background on the clips, see the "Preparation" thread.

All samples are FLAC and under 30 seconds.
Music
  • CD LP Peg, Steely Dan, Aja
  • CD LP On the Run, Pink Floyd, Dark Side of the Moon
  • CD LP Dare, Gorillaz, Demon Days
  • CD LP Dum Diddly, The Black Eyed Peas, Monkey Business
  • CD LP Rhiannon, Fleetwood Mac, Self-titled Album (Dusty, scratched and skipping album)

Test Tracks


I eagerly await your opinions and analysis on the samples.


This post has been edited by Knowzy: Apr 23 2009, 22:09
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Knowzy
post Feb 20 2009, 05:27
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QUOTE (Axon @ Feb 18 2009, 10:34) *
Magic Eraser is a sponge, not a marker - it's going to be in the cleaning aisle.

Got ya.

You can tell how much cleaning I do around the house. When I brought a couple boxes home, the wife tells me we already have a bunch of boxes in the garage! laugh.gif


QUOTE (krabapple @ Feb 19 2009, 07:59) *
Vinylphiles IME commonly recommend a thorough vacuum/clean of even brand-new LPs.

I seem to have misplaced the LP attachment to my vacuum cleaner. smile.gif

Seriously, though, I looked around at acquiring vacuum system. I'm not a handy person, so the DIY route is not a viable option. Buying an assembled system means forgoing another USB turntable or two.

I did pick up the old, reliable Discwasher system, though. I'll clean the test LP, ME the stylus and then post another sample of the silent groove.





QUOTE (Axon @ Feb 19 2009, 08:49) *
New pics up for Pink Floyd and Steely Dan samples, check the upload thread for the images and details....

The graphs look great. Thanks for that.


QUOTE (Axon @ Feb 19 2009, 08:49) *
It's hard to derive any more from these plots without probably equivalent masters and/or the test record sweeps.

I'm working on test record samples after this post.

That brings up a good question: Which specific tracks make for the best samples? You can read the track list and details for Ultimate and Hi-Fi News are online.

Here's what I'm considering:
Ultimate
  • Side A, Track 1: 1kHz tone (Done)
  • Side A, Track 10: Wow & Flutter test Signal
  • Side B, Track 1: Anti-skating Test, 315Hz sweep to +12dB
  • Side B, Track 4: 1kHz vertical, out-of-phase signal
  • Side B, Track 5: 1kHz to 10Hz sweep at -20dB, vertical
  • Side B, Track 6: Silent groove (will re-do after cleaning)

Hi-Fi News

  • Side B, Track 7: 20Hz to 20,000Hz sweep

Will that do it or are there any other important tracks? Are there any I shouldn't bother with?
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Axon
post Feb 20 2009, 05:53
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QUOTE (Knowzy @ Feb 19 2009, 22:27) *
I did pick up the old, reliable Discwasher system, though. I'll clean the test LP, ME the stylus and then post another sample of the silent groove.
Take that sh*t back smile.gif and surreptitiously suggest to your wife that y'all really, really need a $30 pressurized steam cleaner from Walgreens. Look on several other vinyl forums (Audiogon, Audio Circles, Vinyl Asylum etc) on suggestions on how to use it. Combine that with some decent quality microfiber cloths and you'll probably have RCM-quality cleaning right there, just with some more legwork. Without spending any money on vinyl-specific equipment, too! Use a $10 carbon fiber brush to clean off superficial dust.

QUOTE
That brings up a good question: Which specific tracks make for the best samples? You can read the track list and details for Ultimate and Hi-Fi News are online. Here's what I'm considering:
Ultimate
  • Side A, Track 1: 1kHz tone (Done)
  • Side A, Track 10: Wow & Flutter test Signal
  • Side B, Track 1: Anti-skating Test, 315Hz sweep to +12dB
  • Side B, Track 4: 1kHz vertical, out-of-phase signal
  • Side B, Track 5: 1kHz to 10Hz sweep at -20dB, vertical
  • Side B, Track 6: Silent groove (will re-do after cleaning)
Hi-Fi News
  • Side B, Track 7: 20Hz to 20,000Hz sweep
Will that do it or are there any other important tracks? Are there any I shouldn't bother with?


First of all, IMHO, don't clean the test records unless you can see specific issues with them that require cleaning. You're putting a lot of trust into the cleaner to not negatively affect the test record results, and there are several (admittedly theoretical and unobserved) ways that can happen. Brush scratches record, dirt embedded in brush scratches record, dirt in brush is left on record, cleaning agent leaves residue on record, cleaning agent + brush moves the dirt around without picking it up, etc. For most other records, there is a good enough potential benefit of reduced noise that cleaning makes sense, but most test records are very well manufactured and maintained, and are also more expensive. That said, it's not the end of the world if you clean the records - no results are compromised - but if we hear a hiss in one of the channels on the silent bands and varies based on the position of the record, I'm going to wonder. smile.gif

Second, just post the entire needledrops of Ultimate and HFNRR. I can use almost all of the former and most of the latter. And when you're done with all the tables, please re-record each test record with the first turntable you played it on, to establish how much the results changed as a result of all the plays.

This post has been edited by Axon: Feb 20 2009, 05:54
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Posts in this topic
- Knowzy   Samples from USB Turntables: Audio-Technica AT-LP2D-USB   Feb 18 2009, 08:22
- - donnie   The 1 kHz test sample and Dum Diddly (LP) don...   Feb 18 2009, 10:32
- - Axon   Also the links for the Gorillaz and Black Eyed Pea...   Feb 18 2009, 16:34
- - Axon   Hey: I looked at one of your close-up pics and tha...   Feb 18 2009, 16:47
|- - krabapple   QUOTE (Axon @ Feb 18 2009, 10:47) Hey: I ...   Feb 18 2009, 18:29
|- - tiptoe   QUOTE (Axon @ Feb 18 2009, 11:47) Hey: I ...   May 15 2009, 16:54
- - Axon   Bad news, krab... they're already level-matche...   Feb 18 2009, 19:12
|- - krabapple   QUOTE (Axon @ Feb 18 2009, 13:12) Bad new...   Feb 19 2009, 16:49
|- - Axon   QUOTE (krabapple @ Feb 19 2009, 09:49) ED...   Feb 19 2009, 20:37
- - Knowzy   QUOTE (donnie @ Feb 18 2009, 01:32) The 1...   Feb 18 2009, 19:28
|- - krabapple   QUOTE (Knowzy @ Feb 18 2009, 13:28) That ...   Feb 19 2009, 16:59
|- - Axon   QUOTE (krabapple @ Feb 19 2009, 09:59) QU...   Feb 19 2009, 17:54
- - Axon   I only own Aja on LP, not CD. On The Run is a bett...   Feb 18 2009, 19:34
- - Axon   New pics up for Pink Floyd and Steely Dan samples,...   Feb 19 2009, 17:49
- - Axon   I'd also like to point out that even though an...   Feb 19 2009, 20:36
- - Knowzy   QUOTE (Axon @ Feb 18 2009, 10:34) Magic E...   Feb 20 2009, 05:27
|- - Axon   QUOTE (Knowzy @ Feb 19 2009, 22:27) I did...   Feb 20 2009, 05:53
- - Knowzy   QUOTE (Axon @ Feb 19 2009, 20:53) QUOTE (...   Feb 20 2009, 06:28
- - Axon   Don't deal with the server - put up a tracker ...   Feb 20 2009, 08:36
- - Knowzy   The Ultimate Test LP FLACs are up. See the origina...   Feb 20 2009, 21:34
- - Axon   Yeah that was a sucky mastering decision with HFNR...   Feb 20 2009, 21:57
- - Knowzy   I ran the Wow & Flutter test tone through Spec...   Feb 21 2009, 02:14
- - Axon   Those are pretty, but they're not remotely res...   Feb 21 2009, 23:58
- - Knowzy   The Hi-Fi News FLACs are up. QUOTE (Axon @ F...   Feb 22 2009, 04:30
- - Knowzy   The last sample is up: Fleetwood Mac's Rhianno...   Feb 23 2009, 00:34
- - Knowzy   I told you the LP was dusty... After Playing E...   Feb 23 2009, 01:06
- - Axon   Fun times. I told you to get a carbon brush That...   Feb 23 2009, 01:10
- - Knowzy   QUOTE (Axon @ Feb 22 2009, 16:10) That...   Feb 23 2009, 07:29
- - Axon   Just a status update - I got most of the demodulat...   Feb 26 2009, 01:22
|- - Arnold B. Krueger   QUOTE (Axon @ Feb 25 2009, 19:22) Just a ...   Feb 26 2009, 14:18
- - Axon   Thanks for the cheerleading. Demodulating AM is tr...   Feb 26 2009, 21:29
|- - Knowzy   QUOTE (Axon @ Feb 26 2009, 12:29) Thanks ...   Feb 27 2009, 06:54
|- - Arnold B. Krueger   QUOTE (Axon @ Feb 26 2009, 15:29) Thanks ...   Feb 27 2009, 14:15
- - Axon   Post is up: http://www.hydrogenaudio.org/forums/i...   Feb 28 2009, 14:29
- - Knowzy   Strange- I didn't get a reply notification whe...   Jun 9 2009, 23:07


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