You can view details of the back pannel with above pictures. SPL series are Light Weight Sound is Surprising for the size.
There is 2 channel input for each speaker. XLR male output to send the sound signal into another powered speaker, to connect many speaker serial. The item "POWERED SPEAKER (Free Shipped in USA)" is in sale since Sunday, April 19, 2020. This item is in the category "Musical Instruments & Gear\Pro Audio Equipment\Speakers". The seller is "kanamusicwholesale" and is located in SAINT-JEAN-SUR-RICHELIEU.This item can be shipped worldwide.