I have not run into a heat problem with mine Michele but I do use the dual fan setup when I am cranking the shit out of something. I think the PL's look like shit in the wood cases anyway
Ok
Got my PL 400 from a band that had it mounted in a home made enclosure with a handle on top.
One channel blown.
Now I brought it up to the 21st century with the WOAL .
Works first time ! I'm really amazed.
Very powerful too.