Noromance, your question is correct.
To clarify my point further, I do have volume control on my powered Sub. And I need more bass when I'm playing music at lower volume, which is the case most of the time. And as I increase volume from preamp the bass from the sub is too much for my taste. And I hate to standup every time to reduce bass level on the sub. So I want to bypass the preamp volume control for subwoofer. I would like to try this arrangement, but just want to make sure it's technically correct and will not damage preamp or the Sub.
To clarify my point further, I do have volume control on my powered Sub. And I need more bass when I'm playing music at lower volume, which is the case most of the time. And as I increase volume from preamp the bass from the sub is too much for my taste. And I hate to standup every time to reduce bass level on the sub. So I want to bypass the preamp volume control for subwoofer. I would like to try this arrangement, but just want to make sure it's technically correct and will not damage preamp or the Sub.