Review on 🔊 Polk Signature Elite ES20 Bookshelf Speaker - Hi-Res Audio, Dolby Atmos & DTS:X Compatible, 1" Tweeter & 6.5" Woofer, Power Port Technology for Effortless Bass (Pair, Contemporary Walnut) by Adam Alvarez

I originally thought I would buy an S20 for the front left and right speakers combined with an S35 center channel (which is significantly better than mine previous center channel speaker ), and then complete the setup with S10 speakers for surround back left and right. I checked the sizes and read the reviews - but the sizes never registered until I pulled one out of the box. Those are HUGE speakers. Calling them bookshelf speakers would be an exaggeration as they don't fit (depth) on most bookshelves. The sound quality of these speakers is good - clean, clear highs, warm mids and slightly punchy bass. I didn't really test the bass because I paired an M&K V12 subwoofer with these speakers and it covers all frequencies below 180Hz. the space I have for them. If they are too big I will buy another pair of S10 speakers. I may update this review to show the size difference once the S15s become available. The picture shows the size difference between S-10 and S-20. This is a key difference. I tested both the S-10 and S-20 as front left and right channels and couldn't tell any real difference in sound quality (probably due to the subwoofer being at the bottom of the sound range).