Don't bother, just play the cab!
pbrane, it goes without saying that alex is right (it's his cabs, after all) but this has been my experience:
When I unpacked the box, I was stunned by the sheer design of the cab (I have a silver cloth SuperTwin). I quickly hooked my cheap-ass Behringer amp to it and played a few notes, including a low B. Straight out of the box (quite literally) this cab sounded better than any cab I'd previously used - and since I often used "whatever's available" at gigs or rehearsal spaces, I'd seen a few cabs come and go.
First time I took it to rehearsal, I noticed that from start to finish (about 3 hours) the sound had become substantially deeper, clearer and more defined. As if the cab was opening up, so to speak. Since I only use it at rehearsals it took me a few weeks (1 rehearsal per week, max) to "break her in" but a good 9 to 10 hours of solid playing at decent levels will really do the trick. At least it did for me. Really, the more you play it, the better it will sound - up to a point, obviously, where you'll get used to this sound. It's clear as day, dark as night and sounds 100% right.
Hmmm, in fact ... Alex, can you replace my quotes on your site with the above two paragraphs? And I'm from Belgium, not Holland
