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How do I wire my Mesa Boogie Bass Cabinet?

I have a 70s Mesa Boogie bass cabinet with 4 10 inch speakers, plus a horn and a crossover. It is 300 Watts at 8 OHMs.

I bought 4 replacement MB speakers which are 150 watts ech and 8 OHMs. When I opened the back of the cabinet to switch them out the existing speakers are 100 watts each and 32 OHMs.

How do I wire it so its It is 300 Watts at 8 OHMs? Thank you. Schematic diagrams would be most appreciated but any advice will be welcome too.
wplummer16e61

Showing 1 response by herman

herman
2,215 posts
 
Four 32 ohms speakes in Parallel = 8 ohms. All the + terminals of the speakers are connected together and all of the - terminals are connected together.

To get four 8 ohms together to equal 8 ohms you need to put 2 in series to make 16 ohms. Then the two 16's in parallel = 8 ohms. Connect one - terminal to another speakers + terminal, make two of these. Now connect the two unused + terminals together and the unused - terminals together.

I sent a schematic.
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