[TenTec] O II Filters

[Grant Youngman]

> I'm also wondering whether it is really necessary to center the narrow
> roofing filters.  I really don't hear anything obvious to suggest that
> adjustment might be needed.  They came from the factory with no center
> adjustment.

The process is so simple, there's no reason not to try it.  It will affect
the falloff rate on either side of center, although you're entirely correct
that it may end up not being necessary for any given filter.

Grant/NQ5T