Try moving the sub away from rear and side walls if that's the position. If the sub is vented it could be a little more trial and error.
Also seems like the sub is xover a little high. Try 60 hz as an xover point
I'm not really sure the vandi sub with the sonus is a good match
I would lean more towards a rel for your sonus
Also seems like the sub is xover a little high. Try 60 hz as an xover point
I'm not really sure the vandi sub with the sonus is a good match
I would lean more towards a rel for your sonus