How do I bridge an amp?

[L2L 10+ year member]

I have an amp that is 75w x 4 at 4 ohm and 300w x 2 when bridged. I want to run 2 10" subs that are single voice coils that can be run at 2 or 4 ohm.

So how do I wire this set-up and does it matter if it is at 4 or 2 ohm if the amp is bridged?

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[L2L 10+ year member]

Maybe I figured this out.

Take + from channel one to + of sub 1, then - from sub 1 to - of channel 2

Take + from channel 3 to + of sub 2, then - from sub 2 to - of channel 4

Let me know if this is correct.

I believe that this would mean that they would be at 4 ohms.