Quick questions for wiring mono mini speaker

Say I wanted to build a mini speaker with two drivers... and I wanted to use this: TPA3110 BTL Mono 30W Digital Audio Power Amplifier Board DC 12V 24V Amp Module | eBay little amplifier... and I'd be using a stereo source. Is it the case that 1) I can just gang the left and right channels together into the single input and 2) I can run both drivers from the one output and 3) I can use two 4 ohm drivers and they will be in parallel resulting in a 2 ohm load and 4) this amp will work with a 2 ohm load?

Is this how the wiring is generally done in a "halfinator?" Just checking... thanks...
 
Thanks! So if I wanted to add a volume control would it be like this?

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