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I have been playing with ACA’s recently, swapping between bridged mono and parallel mono operation… and then I realised that instead of having to do a fair bit to go from one configuration to another, there was a pretty capable rating-wise switch at the back that can do both in no time at all.

So, I took a few photos that explain what I did. The switch contacts should be used in parallel to half the contact resistance;)

I considered the safety as well… and could not see any problem in using the switch for either mode.

Especially useful if you want to try monoblock ACA in both modes at your friends’ place, for example, where each mode may sound different depending on individual tastes, rest of the system, speakers, room size/damping…

Also, why settle for one mode, when you can change the mode to suit your mood… don’t forget to re-wire speaker connections when changing the modes.

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