Superlux BES8S Studio Subwoofer

Superlux BES8S — 8" Powered Studio Subwoofer for Personal Studios

The Superlux BES8S is an 8-inch active studio subwoofer built to extend the low end of personal monitoring setups with controlled, accurate bass. Designed as part of the BES-S series for studio monitoring and music production, this model pairs a precision-tuned woofer with a built-in 100 W amplifier to deliver deep, accurate low-frequency performance. The rear panel integrates 6.3 mm TRS and RCA inputs alongside a continuously adjustable crossover, making it a drop-in extension for any nearfield monitor rig. The BES8S is purpose-built to pair with the BES3.5 and BES5 monitors, completing a matched full-range BES studio system.

Built-In Amplifier and Adjustable Crossover for Flexible Integration

Unlike passive subwoofers that require an external amp, the BES8S ships with an integrated power amplifier and a continuously variable crossover from 40 to 180 Hz, so the low-end hand-off to the main monitors can be tuned to the room and the program material. Dual 6.3 mm TRS (L/R) and RCA (L/R) inputs and outputs are provided on the rear panel, allowing the unit to slot between an audio interface and a pair of active monitors without extra cabling. Available in 6-inch (BES6S) and 8-inch versions, the series covers smaller desktop setups and larger project studios alike.

Driver and Power — Deep, Controlled Low End

The 8-inch precision-tuned woofer is paired with a built-in 100 W amplifier, giving the BES8S enough headroom to reproduce kick drums, bass guitars and sub-bass content cleanly in small to medium rooms. A maximum SPL of 112 dB keeps the subwoofer out of compression during demanding mixing or tracking sessions.

• Driver Size: 8" — extends low-frequency reach below the range of typical nearfield monitors
• Output Power: 100 W — built-in amplification removes the need for an external power amp
• Max SPL: 112 dB — sufficient headroom for typical studio playback levels

Frequency Response and Crossover — Tunable Low-End Hand-Off

The frequency response spans 30 Hz to 400 Hz at the -10 dB reference, covering the entire sub-bass and low-bass region that small nearfield monitors struggle to reproduce. A continuously adjustable crossover between 40 and 180 Hz lets the user dial in the exact point where the sub hands off to the main monitors, which is critical for phase-coherent monitoring in untreated rooms.

• Frequency Range: 30 Hz - 400 Hz — covers sub-bass and low-bass content
• Crossover: 40 - 180 Hz, continuously adjustable — matches hand-off to any nearfield monitor

Connectivity and Physical Specs — Drop-In Studio Integration

The rear panel provides balanced 6.3 mm TRS (L/R) and unbalanced RCA (L/R) inputs and outputs, allowing the BES8S to sit between an audio interface and a pair of active monitors with standard cables. AC power is universal at 100-240 V, 50-60 Hz, so the unit can be used in any region without a step-down transformer. The compact enclosure footprint fits under most desks, and the 10 kg mass stays manageable during room-tuning repositioning.

• Inputs/Outputs: 6.3 mm TRS (L/R), RCA (L/R) — balanced and unbalanced options for any studio source
• AC Power: 100-240 V, 50-60 Hz, 150 W — universal mains input for international use
• Dimensions: 360 × 320 × 370 mm — compact footprint that fits under most desks
• Net Weight: 10 kg — manageable mass for repositioning during room tuning