FOCAL

Sub12 ST6

13" W-cone subwoofer, 600W RMS, 1000W peak, 28Hz–400Hz response, 125dB SPL, auto-standby, front laminar port, phase, polarity, LPF/HPF controls, XLR I/O.


$3,899.00 CAD
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Description

The Focal Sub12 ST6 is a professional-grade active subwoofer engineered for exceptional bass accuracy, depth, and impact in studio monitoring environments. Designed to complement Focal’s ST6 series monitors such as the Solo6, Twin6, and Trio6, the Sub12 ST6 features a powerful 13" “W”-cone woofer and delivers clean, distortion-free low-end reproduction down to 28 Hz, with maximum SPL reaching 125 dB.

Driven by a 600W RMS Class G amplifier (1000W peak), the Sub12 ST6 ensures high headroom and dynamic precision, making it ideal for critical mixing, mastering, and sound design. It also features internal signal processing with selectable low-pass and high-pass filters, phase and polarity controls, and a variable sub level, allowing you to tailor the subwoofer’s performance to your room and monitoring setup. The addition of a disengageable auto-standby mode, footswitch bypass control, and LFE input/output provides flexibility for both stereo and multi-channel configurations.

Built with reinforced cabinetry and laminar front porting to reduce distortion and port noise, the Sub12 ST6 combines robust construction, refined acoustic design, and user-friendly controls, making it a powerful, transparent, and versatile low-frequency extension for high-resolution studio environments.

Features

Powerful Low-End Performance

Delivers deep, tight bass with a 13" 'W'-cone woofer and 600W RMS / 1000W peak amplification.

Wide Frequency Range

Covers 28 Hz to 400 Hz with high accuracy, ideal for mixing full-range audio.

Clean and Controlled Bass

Front-facing laminar port and internal bracing minimize port noise and distortion.

Studio-Ready Connectivity

Balanced XLR inputs and outputs for Left, Right, and LFE channels with flexible routing options.

Advanced Signal Control

Features user-adjustable low-pass filter, high-pass filter, phase, polarity, and sensitivity.

Bypass and Footswitch Control

Includes 2.1 bypass function, controllable via footswitch, for quick A/B comparisons.

Automatic Standby Mode

Disengageable auto-sleep conserves energy when not in use.

Rugged, Functional Design

Reinforced cabinet with large side handles for easy transport and positioning.

Perfect Match for Focal Monitors

Optimized to pair with Solo6, Twin6, and Trio6 for precise low-end extension.

Specifications

General Specifications

Product Name: Sub12 ST6

Type: Professional Active Subwoofer

Woofer: 1 x 13" (33 cm) Composite ‘W’-cone

Port Type: Large laminar front port

Construction: Dark red natural veneering side panels, black body

Handles: Integrated carry handles

Shielding: None

Dimensions (H x W x D): 60 x 48.7 x 56.8 cm / 23.6 x 19.1 x 22.4 in

Weight: 58 kg / 127.8 lbs

Temperature Range (Use): 5–35°C

Temperature Range (Storage): 0–50°C

Acoustic Specifications

Frequency Response (-3 dB): 28 Hz – 400 Hz

Maximum SPL (Peak @ 1 m, CEA2010B 30–200 Hz): 124.5 dB

Electronic Specifications

Amplifier Power: 600 W RMS (Class G)

Peak Power: 1000 W

Inputs: Balanced XLR – LFE (10 kΩ), Left & Right (10 kΩ)

Outputs: Balanced XLR – LFE (parallel), Left & Right (50 Ω)

Satellite Outputs: Right and Left, electronically balanced, 3-pin male XLR

Nominal Power Supply: ~100–120 VAC / 220–240 VAC, 50/60 Hz

Fuses:

– ~100–120 V: T10AL / 250 V

– ~220–240 V: T5AL / 250 V

User Controls

Sub Level (Sensitivity)

Low-Pass Filter (LPF) Adjustment

High-Pass Filter (HPF) with Cutoff Frequency Selection

High-Pass Defeat

Phase Adjustment

Polarity Switch

Mute

2.1 Bypass (Controlled by External Footswitch)

Auto Stand-by Mode (Disengageable)

Internal Signal Processing – Subwoofer Section

Left/Right Mono Summation

LFE + Mono Low-Pass Filter (24 dB/octave)

Switchable High-Pass Crossover (24 dB/octave)

Phase and Polarity Controls

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