Amazon.com: 50 Ft 16 AWG Ga Bulk 4-Conductor in Wall Speaker Cable White Pro Grade Audio Digital Speaker Stranded Copper High Strand Count PVC Jacket UL Listed in-Wall Flexible Signal Transfer :
ALLiSHOP 16# AWG 16 Gauge AWG Silicone Rubber Wire Cable Temperature Resistant Red Black Flexible Electrical Wires Cable|cable signal splitter amplifier|cable for submersible pumpwire phone cable - AliExpress
10/12/14/16 AWG Gauge Wire Flexible Silicone Copper Cables RC Black Red 1M+1M | eBay
HP Reverb G2 Cable (19.69') 22J68AA B&H Photo Video
MONSTER CABLE XP SPEAKER WIRE 16 AWG OFC CLEAR 50 FT | eBay
BrassCraft 5/16 in. x 50 ft. Slotted-End Replacement Cable BC96106 - The Home Depot
Choosing the right cable gauge wire for your audio speakers
16 AWG 16 Conductor SOOW Portable Cord CPE Black | By the Foot