PreSonus Eris Sub 8BT Bluetooth Studio Subwoofer Adding a subwoofer to full-range speakers enables you to hear the low-frequency foundation of your mix more accurately so you can make better-informed decisions and create more translatable mixes. The surprisingly loud, 100 watt Eris® Sub 8BT drops down to a molar-rattling 30 Hz, so you'll hear the full sonic spectrum and produce better mixes. For EDM and hip-hop producers, in particular, a subwoofer is a must-have. 5 to the Eris Studio 5. Add a PreSonus Eris Sub 8BT subwoofer to your compact full-range system and hear, with precision accuracy, the powerful low-frequency sound you've been missing. For your Room and Studio Thanks to flexible configuration and I/O options, you can configure the Eris® Sub 8BT exactly to your mixing and listening needs. Connect existing monitors via ¼-inch TRS or RCA cables, set the input level to your liking, and even invert the polarity. Pair a mobile device via Bluetooth® 5.0 wireless technology to quickly listen to a reference mix. 5.0 Wireless Connectivity The first PreSonus® studio subwoofer to offer Bluetooth® 5.0 wireless connectivity, the Eris Sub 8BT provides flexible wired connection options, as well, making it easy to add it to just about any monitoring setup. Onboard controls let you effortlessly create a 2.1 monitoring system and tune it to your room. Highpass filter and lowpass filter (crossover) controls ensure the Eris Sub 8BT starts working at the precise frequency where your main monitors stop, avoiding the flabby, smudged, low-end mess that occurs without a crossover. Features: 8-inch composite low-frequency driver Bluetooth® 5.0 wireless audio stereo input 50W RMS, Class AB power amplifier 30 Hz to 200 Hz frequency response 100 dB SPL (Peak, @ 1 meter) Input gain control (-30 dB to +6 dB, continuously variable) Continuously variable lowpass filter (50 Hz to 130 Hz) Defeatable highpass filter removes frequency content below 80 Hz from the full-range signal sent from the Eris® Sub 8BT outputs to the main speakers Left and right, balanced ¼-inch TRS and unbalanced RCA main inputs Left and right, balanced ¼-inch TRS and unbalanced RCA pass-through outputs for connecting satellite speakers Polarity invert switch Protection: RF interference, output-current limiting, over-temperature, turn-on/off transient, subsonic filter Power Saver mode (engages after 40 minutes)