PreSonus Eris Sub 8BT | 8in Active Studio Subwoofer | Bluetooth Input with 50W Class AB Power

PreSonus ERIS SUB 8 BT  (PreSonus ERIS-SUB-8-BT)

Active Studio Subwoofer

PreSonus Eris Sub 8BT is an active studio subwoofer built to add accurate low-frequency extension to compact monitor systems in home studios, content creation setups, and multimedia workstations. With a front-firing 8-inch woofer, adjustable crossover controls, and multiple analog input and output options, it helps users hear the low-end foundation of their mixes more clearly and build more balanced, translatable productions.

PreSonus Eris Sub 8BT Competitive Differences

• Combines an 8-inch front-firing woofer, 50W RMS Class AB amplification, and Bluetooth audio input in a compact studio-friendly subwoofer format
• Variable low-pass filtering, switchable 80 Hz high-pass output filter, input gain control, and polarity inversion make integration with full-range monitors simple

PreSonus Eris Sub 8BT Description

The PreSonus Eris Sub 8BT is designed for musicians, producers, and creators who want to extend the bass response of their monitoring system without taking up excessive space. Its 8-inch composite woofer and ported enclosure provide solid low-frequency performance, helping reveal kick drum weight, bass detail, synth energy, and other low-end information that smaller full-range monitors can miss.

Powered by a 50W RMS Class AB amplifier, the subwoofer delivers controlled bass response from 30 Hz to 200 Hz with a maximum SPL of 103 dB. A continuously variable low-pass filter from 50 to 130 Hz allows users to dial in a smooth crossover point with their main speakers, while the switchable 80 Hz high-pass filter can remove low-frequency content from the signal being sent to connected monitors for cleaner system integration.

The PreSonus Eris Sub 8BT also offers flexible connectivity for modern studio and playback setups. Balanced 1/4-inch TRS and unbalanced RCA inputs and outputs make it easy to connect to a wide range of interfaces, controllers, and speakers. Bluetooth 5.0 stereo input adds convenient wireless playback, making it useful not only for music production but also for casual listening and reference checks from mobile devices.

Additional controls such as variable input gain and a 0 or 180 degree polarity switch help users fine-tune the subwoofer for room placement and system alignment. This makes the Eris Sub 8BT a practical low-end upgrade for desktop production rigs, editing suites, compact music workstations, and other small monitoring environments.

Eris Sub 8BT Features

• Active studio subwoofer for compact monitor systems
• 8-inch front-firing composite woofer
• 50W RMS Class AB amplification
• Bluetooth 5.0 wireless stereo audio input
• 30 Hz to 200 Hz frequency response
• 103 dB maximum peak SPL
• Continuously variable low-pass filter from 50 to 130 Hz
• Switchable 80 Hz high-pass filter on outputs
• Input gain control with continuously variable adjustment
• Polarity switch with 0 or 180 degree selection
• Balanced 1/4-inch TRS and unbalanced RCA inputs
• Balanced 1/4-inch TRS and unbalanced RCA outputs
• Compact bass-reflex ported enclosure

Eris Sub 8BT Specifications

• Product Type: Active Subwoofer
• Woofer: 1 x 8 in (20.3 cm) composite cone
• Amplifier Power: 50W RMS Class-AB
• Frequency Response: 30 Hz to 200 Hz
• Maximum SPL: 103 dB
• Low-Pass Filter: Variable 50 Hz to 130 Hz
• High-Pass Filter: 80 Hz switchable on outputs
• Phase Adjustment: 0 / 180 degree polarity inversion
• Audio Inputs: 2 x 1/4 in TRS balanced line input, 1 x stereo RCA unbalanced line input
• Audio Outputs: 2 x 1/4 in TRS balanced line output, 1 x stereo RCA unbalanced line output
• Wireless Audio: Bluetooth 5.0 stereo input
• Enclosure: Bass-reflex / ported, shielded
• AC Input Power: 100 to 120 VAC, 50/60 Hz or 220 to 240 VAC, 50/60 Hz
• Power Consumption: 100 W
• Dimensions: 9.8 x 11.7 x 12.7 in (24.9 x 29.7 x 32.3 cm)
• Weight: 16.3 lb (7.4 kg)

What's In The Box

• PreSonus Eris Sub 8BT active subwoofer
• Power cable