Stereo Tool :: Marian Seraph MKII sound card driver setting

Marian has recently updated their Seraph sound cards. By default, they now have a slightly flatter frequency response, but that comes at a cost in phase response. When testing the new cards we found that we got up to 10% overshoots in our MPX signal.

We have contacted Marian about this and they have created a new driver that has a setting to get the old/normal behavior back. So, if you have an MKII card, please perform the following steps:

Install the latest driver version, v4.3.4.0
Go to Settings -> DAC, and choose "Linear Phase, Slow Roll-Off"
Make sure to press Apply to confirm your selection, otherwise it will be lost after a reboot.

We will add a setting in Stereo Tool soon to make the response completely flat (with these settings you loose about 0.3 dB at 57 kHz, similar to what the MKI cards had - since we know that the filter is phase linear we can easily compensate for it, so look out for a "Seraph MKII" checkbox in the near future).

Author:	hvz [ Mon Mar 21, 2022 6:02 pm ]
Post subject:	Marian Seraph MKII sound card driver setting
Marian has recently updated their Seraph sound cards. By default, they now have a slightly flatter frequency response, but that comes at a cost in phase response. When testing the new cards we found that we got up to 10% overshoots in our MPX signal. We have contacted Marian about this and they have created a new driver that has a setting to get the old/normal behavior back. So, if you have an MKII card, please perform the following steps: Install the latest driver version, v4.3.4.0 Go to Settings -> DAC, and choose "Linear Phase, Slow Roll-Off" Make sure to press Apply to confirm your selection, otherwise it will be lost after a reboot. We will add a setting in Stereo Tool soon to make the response completely flat (with these settings you loose about 0.3 dB at 57 kHz, similar to what the MKI cards had - since we know that the filter is phase linear we can easily compensate for it, so look out for a "Seraph MKII" checkbox in the near future).

Author:	KDST [ Sat Apr 02, 2022 2:57 am ]
Post subject:	Re: Marian Seraph MKII sound card driver setting
Quote: Marian has recently updated their Seraph sound cards. By default, they now have a slightly flatter frequency response, but that comes at a cost in phase response. When testing the new cards we found that we got up to 10% overshoots in our MPX signal. We have contacted Marian about this and they have created a new driver that has a setting to get the old/normal behavior back. So, if you have an MKII card, please perform the following steps: Install the latest driver version, v4.3.4.0 Go to Settings -> DAC, and choose "Linear Phase, Slow Roll-Off" Make sure to press Apply to confirm your selection, otherwise it will be lost after a reboot. We will add a setting in Stereo Tool soon to make the response completely flat (with these settings you loose about 0.3 dB at 57 kHz, similar to what the MKI cards had - since we know that the filter is phase linear we can easily compensate for it, so look out for a "Seraph MKII" checkbox in the near future). Hans you remember the MPX Passthrough thing? Do you think you can make it pass a complete 192khz signal into the FM Output? The calibration from the FM Output section is outstanding with my realtek soundcard.

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