Whilst I'm still modifying/restoring my A7 boxes I thought in the meantime I'd try some 825 boxes that had been pseudo modified into 816's, these boxes were laying around and I thought, what the heck, lets try them. I put my 416-8b's,515/802-8D's & N1201-8A's into them. How could anyone think of using these cabs for anything that resembles music is beyond me, the bass was the typical Boom, Boom you get from a box that is way too small for the woofer (high VAS) and tuned way too high (Fb). I even messed around with the tuning with little success.
I am amazed that when people made mention between A7 (825/828) boxes and the 816 all they said was that the bass on the 816 was reduced. What about the Boom, Boom, Boom. Is it me or is this what other have found with the 816 and it's variants.