Mark IV Series 400BH bass amp head

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Joined: Sat May 26, 2012 9:42 am

Mark IV Series 400BH bass amp head

Post by BrownAle » Sat May 26, 2012 9:44 am

Can somebody tell me the correct fuse for this head? On the schematics it is written as a 4 amp, but on the back of the head, above the fuse input itself, is written 8 amp.

Oren Hudson
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Re: Mark IV Series 400BH bass amp head

Post by Oren Hudson » Sat May 26, 2012 8:43 pm

My fully functioning and great sounding Mark IV shows 8 like yours - and that's exactly what it has in it.

I'm using that head with the matching 2-15 Black Widow cab and my '65 P-bass for a Temptations tribute this Friday in a 900 seat auditorium. :D
you can't have too much bass

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Re: Mark IV Series 400BH bass amp head

Post by Enzo » Mon May 28, 2012 5:13 pm

Always use what it says ON THE AMP.

The schematic? Look again. It says 4A in the lower left in the box for the wiring for 220v operation, and it says "export transformer" there. Towards the center is the drawing for 120v operation, which is what we have in the USA, and it says there 8A.

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