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  #11  
Old 01-15-2014, 12:34 PM
Pojuojuo Pojuojuo is offline
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I agree, accu drive is needed to get the best sound from this excellent turntable
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  #12  
Old 01-16-2014, 06:28 PM
Marco1 Marco1 is offline
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Quote:
Originally Posted by Pojuojuo View Post
I agree, accu drive is needed to get the best sound from this excellent turntable
Do you have the accu drive? I'm very interested in knowing what improvements can be expected. Thinking about it for my Ovation, but it's a significant investment relative to the cost of the table and I'm wondering if it's worth it.

Regards, Mark
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Conrad Johnson Premier 12-XS, Premier 15 series 2, and Premier 16 series 2; ClearAudio Ovation w/Clarify arm and Audio Note IQIII; Cardas Clear; Merlin TSM MXM; and 2 Velodyne DD 12's.
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  #13  
Old 02-13-2014, 02:33 AM
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Hello,

I have a Champion Level II; I recently found on some slow piano tracks speed seemed a little bit low.

I've replaced the belt and I've oiled the axis.

I've bought a stroboscopic disc and the Dr Feickert's App for my Iphone with the disc playing a 3150 Hz.

I need help to understand the values I've found:

Mean Frequency: 3154.5 Hz

WOW according to DIN IEC 386
using method 2 sigma: +/- 0.30%
using method dynamic: +/- 0.19%

Raw Frequency:
max deviation (relative): -0.71%/+0.76%
max deviation (absolute): -22.4Hz/+23.9 Hz

Lowpass filtered Frequency:
max deviation (relative): -0.06%/+0.03%
max deviation (absolute): -1.8Hz/+0.8Hz


Thanks in advance.
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  #14  
Old 03-02-2014, 04:14 AM
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Hello all,

I made the test with an Audiotecnica which is a replica of the TECHNICS SL1210, with a direct motor drive quartz; here are the results;what do you think?



AUDIOTECNICA/CLEARAUDIO

MEAN FREQUENCY 3149,9Hz 3152.4Hz

WOW DIN IEC 386

METHOD 2 SIGMA +/-0.31% +/-0.32%

METHOD DYNAMIC +/-0.21% +/-0.27%

RAW FREQUENCY

MAX DEVIATION RELATIVE -0.52%/+0.74% -0.80%/+0.75%

MAX DEVIATION ABSOLUTE -16.3Hz/+23.4Hz -25.2Hz/+23.6Hz

LOWPASS FILTERED FREQUENCY

MAX DEVIATION RELATIVE -0.03%/+0.02% -0.05%/+0.03%

MAX DEVIATION ABSOLUTE -1.0Hz/+0.6Hz -1.4Hz/+1.1Hz
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  #15  
Old 03-17-2014, 05:28 PM
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And here are the values with Jérôme's turntables:


Rega P9 Verdier

3163.9 Hz 3159.9Hz


Method 2 Sigma : +/- 0.22 % +/- 0.16%
Dynamic : +/- 0.19 % +/- 0.11%

Raw Freq :

Max Deviation relative : -0.5% /+0.7% -0.54% /+0.46%
absolute : -16Hz / +22.4Hz -17.1Hz / +14.6 Hz

Low Pass Filtered Freq :

Max Deviation Relative : -0.02 % / +0.05% -0.04 % / +0.05%
absolute: -0.8 Hz / +1.7 Hz -1.2Hz / +1.7Hz
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  #16  
Old 03-18-2014, 05:00 PM
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Jean-Marc,

Here are my results. Avid Volvere :


Attached Images
File Type: jpg IMG_1347.jpg (35.6 KB, 61 views)
File Type: jpg IMG_1348.jpg (49.7 KB, 9 views)
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  #17  
Old 03-18-2014, 05:08 PM
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Georges,

Your average speed is a little bit too high at 3183.4 Hz for 3150 Hz you should find;but for raw frequency it's like the Rega P9 and Audiotecnica, quite good or tolerable imho.

No reply from Avid?
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  #18  
Old 03-18-2014, 05:40 PM
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Quote:
Originally Posted by Jean-Marc jmajma View Post
Georges,

Your average speed is a little bit too high at 3183.4 Hz for 3150 Hz you should find;but for raw frequency it's like the Rega P9 and Audiotecnica, quite good or tolerable imho.

No reply from Avid?
Still no reply but I've been too busy at work to follow-up on the issue.

I've just made a new test after listening to an album. I did it without stopping the table so to avoid the variation from when the table starts.

The results are even better than the Verdier but don't tell that to Jerome

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  #19  
Old 03-18-2014, 05:50 PM
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That's what I told you, let the platter turn for a while before measuring...

You can buy an option for the App which will give you the WOW IEC DIN 386, if you want.
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  #20  
Old 03-18-2014, 06:35 PM
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I need to do that and you need to pay as well to save the graphs.
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