IPB

Welcome Guest ( Log In | Register )

Samples from USB Turntables: Audio-Technica AT-LP2D-USB
Knowzy
post Feb 18 2009, 08:22
Post #1





Group: Members
Posts: 128
Joined: 15-July 08
Member No.: 55856



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
Go to the top of the page
+Quote Post
 
Start new topic
Replies
Axon
post Feb 19 2009, 17:49
Post #2





Group: Members (Donating)
Posts: 1984
Joined: 4-January 04
From: Austin, TX
Member No.: 10933



New pics up for Pink Floyd and Steely Dan samples, check the upload thread for the images and details. I'd go this far with the plots:
  • Between 1k-9k the response rolls off by 6-9db. This is a huge, huge difference.
  • The response at 20k is about 15-20db below at 1k. Not as bad, but still crummy in the grand scheme of things.
  • The tonearm resonance is now pretty concretely in the 20-30hz range, which is not as bad as it was looking before, but still not good. It should be in the 8-15hz range, and on many home entertainment systems this may cause audible problems, especially during live playback of vinyl (although many people will like it because it provides a bass boost)
  • The Pink Floyd needledrop has a large noise peak at 19khz, but it doesn't exist in the Steely Dan recording. So it might be cut into the record. Probably not audible to begin with.
  • L-R narrow peak around 21k - this is in both recordings and is probably electrical noise in the turntable, but is certainly inaudible
  • Large (5db) response discontinuity in both tracks at 9.5khz, probably a resonance of some kind? Maybe in the cartridge? Probably audible.
  • ~3db bump at 14k, not audible for most people
  • Large-to-huge peak just after 20k followed by a huge rolloff - possibly the stylus tip-vinyl resonance, or else it could be the LCR resonance of the preamp
It's hard to derive any more from these plots without probably equivalent masters and/or the test record sweeps. Plus, I've already spent way too much time on this on a weekday. smile.gif The plots look really ragged overall, but it's hard to gauge how much of this is the turntable and how much of it is the mastering, especially with the raggedness goes in opposite directions for different records.
Go to the top of the page
+Quote Post

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


Reply to this topicStart new topic
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:

 



RSS Lo-Fi Version Time is now: 21st August 2014 - 23:30