Variovents can be used on the baffle of the speaker. To use a variovent though, the cabinet MUST be completely airtight except for the variovent itself. If there are ANY air leaks at all, the variovent is compromised and your results will be strictly hit or miss.
Keep in mind that a variovent is kind of a "cross" between a sealed speaker and a ported speaker. As such, it sounds like neither of them and DOES have a sound of its' own. While it is FAR tighter than a port and does offer the benefits of lower excursion as compared to a sealed design, it isn't as tight as a sealed box nor quite as efficient as a port. Benefits and drawbacks, like anything else. Sean
>
