Mono stereo cabinets the diagram below shows the wiring of a marshall 2x12 speaker cab having a monostereo selection switch and two specialized input jacks. Connect the terminal on the amp to the terminal on each speaker.

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Diy bluetooth speaker wiring diagram. All the diy bt speakers ive read about are stereo yet both speakers are in the same box which in real world is undesirable. Since both the amp and bt unit need power but we dont want to use two separate power wires we will share one. A home stereo for example may often list 6 16 ohms as being ok for use. An example of this is shown below. This would allow the 2 speakers to be placed apart without a wire inbetween them. When the monostereo switch is set to mono the two 8ω speakers are wired either in series making a 16ω cab or in parallel making a 4ω cab.
Image of the rear of a home stereo receiveramplifier. Then do the same for the terminals. Wiring speakers in parallel is simple. The recommended speaker impedance ratings are usually listed above the speaker wire posts. Diy stereo bluetooth speaker 2x30w. I wonder if there is any bt amplifier module which has the 2 channels separated into 2 circuit boards and yet works with a single bt pairing.
To make a four speaker 8ω cabinet put four 8ω speakers in series parallel. Also attempting to wire two 8 ohm speakers in parallel to an 8 ohm stereo would have the same effect. This is a pretty thorough walk through of everything youll need to know to construct a simple bluetooth speaker with a first order crossover more on that laterthis is my full version of the instructable linked below from which i used the. Basics of your speaker power bluetooth amp and ground loop isolator.