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+--- Thread: SAM Measurements (/Thread-SAM-Measurements)
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RE: SAM Measurements - thumb5 - 24-Jan-2024
Daniel, I'm sure you already tried this, but perhaps the high-pass filter only works with SAM disabled?
RE: SAM Measurements - Waiski - 24-Jan-2024
(24-Jan-2024, 17:59)daniel.avasilichioaei Wrote: Today I wanted to measure the effect of the "Subsonic filter", as well as that of several "High-pass" filters.Do you use SAM or Sweet Room? At least sweet room disables high/lowpass filters.
Subsonic filter seems to do its job as intended.
However, with the high-pass filter, I had a very unpleasant surprise: it seems not to work at all. I tried several amplifier configurations and several filter settings and none of them have any effect: no difference is heard, and the measurements come out identical. I even tried extreme settings (cut-off frequency = 5,000 Hz) and there is still no difference. It seems that the high-pass filter does not work at all, which surprises me: I know that many users have subwoofers and use the high-pass filter.
Strange situation...
RE: SAM Measurements - daniel.avasilichioaei - 24-Jan-2024
I don't use SAM, Sweet Room, DPM, tone adjustments, balance, etc. Practically everything is deactivated. In the idea that maybe the high-pass filter depends on other settings that should be activated, I also tried with the ones above activated (eg the tone settings). I did not manage to make the high-pass filter work in any way.
It's a mystery...
RE: SAM Measurements - thumb5 - 24-Jan-2024
How strange. Do you think Devialet support might shed any light on it?
RE: SAM Measurements - daniel.avasilichioaei - 25-Jan-2024
(24-Jan-2024, 23:05)thumb5 Wrote: How strange. Do you think Devialet support might shed any light on it?
So far I have only tried dual-mono configurations. I want to try to configure a single amplifier separately, not as part of a chain, but still as a mono amplifier. After that, I will contact Devialet technical support.
RE: SAM Measurements - Vivialet - 25-Jan-2024
I'm using the highpass on a dual mono configuration and it works. The sub is connected to the stereo out on the slave.
No SAM, no Sweet Room. And the result is clearly visible in measurements.
RE: SAM Measurements - daniel.avasilichioaei - 25-Jan-2024
I think I found the problem. It's an older one from the configurator, I knew about its existence, but I didn't know that it also affects the high-pass filter. In fact, I didn't know everything it affects and I still don't know now.
The resulting configuration files are different (at least for the master) if you start the configurator directly with a dual-mono configuration versus when you start the configurator with an amplifier and only then add the second one.
In all my previous tests, I had started the configurator directly with a dual-mono configuration.
I'm not sure that was the cause, but that seems to be the case...