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The B40 was a cool cab. I used one back in the day (75 and 76ish) with my V4B. I eventually moved up to an SVT810. Fliptops makes a 410 that, according to JimmyM, is modeled after the old B40.A little rarer to come by but Ampeg made the B40 cab in the 70s as well. Same width as the V4 but a sealed 4x10. Basically half of the 70s 8X10 but not quite the same internally.
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I haven't seen one since 1976. coreyfyfe may have the only one left in existence! LOL!I have yet to see a B40 anywhere. They must be really rare.
I have yet to see a B40 anywhere. They must be really rare.