Our 1961 and 1723 Subwoofers can be easily daisy-chained.
This is often done if you have multiple subwoofers stacked or placed close to each other.
The RCA (or XLR) output is a direct pass-through of the signal on the corresponding input.
This means the RCA 1 input is connected to the RCA 1 output. The same goes for the XLR Ins and Outs on our 1723 Subwoofers.