A:AnswerHi Edix - the correct Rear Speaker Kit that is compatible with the HW-T40M Soundbar is the SWA-8500S: https://www.bestbuy.com/site/samsung-wireless-rear-loudspeakers-black/5754510.p?skuId=5754510 ^Gina
A:AnswerHello Mike, I have attached a link below to compatible products.
https://www.samsung.com/us/televisions-home-theater/television-home-theater-accessories/home-theater/rear-wireless-speaker-kit-for-sound--soundbars-swa-9000s-za-compatible
^Britt
A:AnswerNot meant to be as loud as the 3 other speakers in the 5.1 set up. They fill and create ambient support to either the right or left channel speakers; when properly used they demostrate depth in sound or indicate rear sound sources.
A:AnswerHi swa9000Shwms5650, we understand your concerns with the Soundbar. Please fill out the form below and one of our social media specialists would be happy to assist you. http://smsn.us/SamsungSupportUSA and we will respond accordingly. ^Britt
A:AnswerI read 16 gauge wire from various folks, bought 16 gauge that came in yesterday, and can assure you it's definitely thinner. I dont know if 18 or thinner. BUT, just to check, I spliced the 16 gauge to the provided wire, about 20 feet extra, and seems to work fine. I'd still go with a higher gauge.