Sonos Sub Gen 3

The Sonos Sub Gen 3 and the newer Gen 4 share key acoustic characteristics, both featuring two woofer drivers and an operational frequency floor starting at 25Hz, confirming their focus on deep bass reproduction. A significant practical distinction lies in the physical design, as the Gen 4 has inverted its width and depth measurements compared to the Gen 3, potentially affecting placement options. Furthermore, the Gen 4 introduces an automatic calibration feature utilizing a measurement microphone, which the Gen 3 lacks, suggesting the newer model offers potentially easier and more optimized setup. While both units utilize Class D amplification and are wireless, the Gen 4 opts for an integrated power cable, contrasting with the Gen 3's separate inlet connector, a minor but noticeable difference in connectivity and portability. Overall, the Gen 4 offers enhanced setup convenience through automatic tuning.