You own a store, you sell 2 brands, which?

RCA would be one. They were the Microsoft in days past.

Donald Trump has been known to command $1.5 million on the speaker circuit. He could hang around in the shop in the used section. And that’s all I have to say about that brand.

Can someone explain to me which speakers are not electronic?  Are they things that make sound without the use of any electric input, wires, crossovers, magnets etc?

I've seen pictures of vintage horn like things which somehow physically attach to the source of vibration.

@erik_squires Thankyou, however I think that’s just geography.

I’m not sure Wiki clarifies my pedantic point but only serves to deflect - it is talking about two types of electronics - active (powered?) and passive. Non-active speakers use passive electronics, by definition. I’m not convinced that makes them non-electronic.