You probably already know this, but many manufacturers of mass-produced bass cabs publish the cab's "thermal" power rating and not the cab's "mechanical" power rating. It's not uncommon for a cab's mechanical power rating (where the speaker blows) to be around half of its thermal rating (where the voice coil melts). So it is possible for a so-called 800 watt cab to actually only handle around 400 watts RMS before blowing the speakers. Many bass cab manufacturers like to publish the thermal rating rather than the mechanical rating because the thermal number is so much higher (it sounds more impressive which translates to higher sales). So if you plan to push more than 400 watts RMS into that cab, my recommendation is, be careful.I recently acquired a mark Bass for 104 cab will support 800 W @ 8 ohms.
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