21-May-2015, 08:32
(21-May-2015, 00:13)Saint0 Wrote:I made a test : I converted the lossless flac file into MP3 (Gavotte in D by Jacques Loussier). Even with MP3 file, SAM can be seen without problem.(20-May-2015, 09:01)Sylvain27 Wrote:Thanks, I'll try that one out. I used Massive Attack's "Angel" to check SAM On/Off before, which is the reference track on the Scala V1 SAM webpage.(20-May-2015, 05:58)Saint0 Wrote:Well, I am quite surprised. On the video, the tune played is track 4 of this album http://www.qobuz.com/fr-fr/album/jacques...qref=dac_7 (Gavotte in D major). I just tried at -20 dB the beginning of the track, SAM ON/OFF is obvious, the woofers move much more with SAM ON (100%) and if I reduce SAM %, movements of the woofer are smaller (subsonic filter OFF, I did no try with ON). I know that there is a big woofer on the Scala and 2 smaller woofers on the Diva, but B&W 802D has a big woofer too. I remember that someone who have a pair of Focal Diablo (one of the first speaker SAMed by Devialet) noticed these big movements too. What source are you using?(19-May-2015, 16:23)Sylvain27 Wrote:(19-May-2015, 09:51)Saint0 Wrote: I'd like to add that V8.0 is running OK under "nominal conditions" playing music at -33dB to -20dB. The operating temperature is 4 to 5'C lower than V7.1.1.Hello, I have older Focal Utopia speakers, a pair of Diva. Devialet borrowed my own pair to be SAMed, so I hope the correction is the right one! I have a similar experience, SAM does not change completely the bass, and I think it's because we have speakers with already a good bass response without SAM. However if you look at the boomers while playing double bass for instance, SAM correction can be seen immediately at times, movements of the speakers' membrane have a much larger amplitude with SAM.
However, SAM has minimal effect on my Focal Scala V1. Sound stage opens up a bit with SAM, but not much changes in the bass. SAM 2.0 is even more subtle than 1.0, not sure if it's worth the trouble. I don't noticed much difference changing the SAM % either. I'm wondering if other Scala V1 users have the same experience?
Best regards,
Sylvain
Thanks for the feedback Sylvian.
I've seen video's of other SAM'd speakers, like the B&W 802D, on YouTube. It looks like some kind of subsonic vibrations with SAM. Deviate's site claims 10mm excursion for the Scala V1 with SAM, (I thought it used to be 17mm with SAM 1.0 ??). I was hoping to see some visible evidence of SAM in action, but my Scala's woofers don't seem to move in & out with SAM like the others. I've tried it with Subsonic Filter On & Off, but I've not noticed any major visible difference in the woofer's behavior with or without SAM. I usually set the volume at -33dB to -20dB max, may be I'm not playing them loud enough?
Devialet 800, Focal Utopia Diva (SAM), Roon 1.3 (build 242, Devialet Air in Roon) + Audio PC (customized Windows 10) + Android app
France
France