[quote name='6v6' timestamp='1412420493' post='2568766']
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Assuming thats a 100w 5153 I'd classify that and a twin running with master at 6 as well towards the pretty-damn-loud end of the spectrum.
The 250w starting point is probably sensible, but I guess the question to ask yourself is what you'll do if the 250w combo isn't loud enough - the TC combos won't take an extension cab so you're at your maximum the day you buy it, whereas one of the amps or combos which do 250w+ into 8ohms (e.g the 500w+ amps, as all manufacturers brand things for their absolute-maximum-into-4ohms ratings) future-proof you to a point, as you can add another speaker for more cone area and more power if you need it.
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Good advice - thanks, just confirms it that although a dinky bh250 would be nice I should get something more future proof. If I see a cab I'll probably jump on the tonehammer 350 or LM2.