08-Nov-2017, 20:31
Let's not focus too much on the vinyl side as the thumping problem is present via digital playback as well.
Some further observations:
SAM1 is completely different from SAM2.
SAM1 has a subsonic filter always engaged. With firmware 7.1.3 and SAM1 on, the woofers barely move, no matter how loud the sound is. With SAM1 off, the woofers move freely (no subsonic filer) and can get violent if the volume is raised, however the excursion limiter never engages.
With firmware 8.X thru current, SAM2 off the woofers move freely (no subsonic filer), limiters never engage no matter the volume. With SAM2 on, woofers move freely (no subsonic filter), but limiters engage making a "thud" sound if the volume is raised to moderate loud.
Some further observations:
SAM1 is completely different from SAM2.
SAM1 has a subsonic filter always engaged. With firmware 7.1.3 and SAM1 on, the woofers barely move, no matter how loud the sound is. With SAM1 off, the woofers move freely (no subsonic filer) and can get violent if the volume is raised, however the excursion limiter never engages.
With firmware 8.X thru current, SAM2 off the woofers move freely (no subsonic filer), limiters never engage no matter the volume. With SAM2 on, woofers move freely (no subsonic filter), but limiters engage making a "thud" sound if the volume is raised to moderate loud.
