Experience the full sonic spectrum with the Eris® Sub 8BT, a compact studio subwoofer that reaches down to a molar-rattling 30 Hz whilst maintaining the precision and clarity demanded by professional monitoring applications. This 8-inch front-firing subwoofer features a glass-composite woofer driven by a robust 100W amplifier, delivering smooth low-frequency transients that seamlessly integrate with your existing compact studio monitors without overwhelming them.
The Sub 8BT stands out as PreSonus®' first studio subwoofer to incorporate Bluetooth® 5.0 wireless connectivity, providing exceptional flexibility alongside traditional wired connection options including stereo 1/4" TRS and RCA inputs and outputs. Built-in tuning controls allow you to create an optimised 2.1 monitoring system tailored to your room acoustics, with a variable lowpass filter ensuring seamless crossover transition and a switchable 80 Hz highpass filter for enhanced satellite speaker performance.
Specifically voiced to complement the entire range of compact Eris studio monitors from the ultra-affordable Eris 3.5 through to the Eris Studio 5, this subwoofer features comprehensive protection circuitry, power-saving functionality, and intuitive onboard controls. With its 30 Hz to 200 Hz frequency response and 100 dB SPL peak output capability, the Eris Sub 8BT delivers the low-end extension essential for accurate mix translation and professional monitoring applications.
- 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 1/4" TRS and unbalanced RCA main inputs
- Left and right, balanced 1/4" 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)



