B W 800 series user manual

About this manual

This manual provides safety instructions, unpacking guidance, and detailed setup steps for the B&W ASW825/ASW855 active subwoofer. It explains how to position the unit, connect line‑level inputs and outputs, and configure controls such as volume, low‑pass filter, phase and EQ for both home‑theatre and 2‑channel audio installations.

Additional sections cover warranty information, environmental compliance, and troubleshooting tips, including how to calibrate the subwoofer with a THX® controller or other decoders. The document also includes wiring diagrams and recommended settings for optimal bass performance.

What's inside

• Important Safety Instructions
• Unpacking
• Positioning the Subwoofer
• Electrical Connections
• Control Settings
• Home Theatre Setup
• 2‑Channel Audio Setup
• Fine‑Tuning
• Warranty and Compliance

Specifications

Frequently asked questions

What safety precautions should be taken before installing the subwoofer?

Read all safety and operating instructions, do not open the back panel, keep the unit unplugged while cleaning, and ensure proper ventilation and grounding as described in the manual.

What are the recommended control settings for a 2‑channel audio setup?

Set Volume to the halfway position, Low‑Pass Frequency to 80 Hz, Low‑Pass Filter to IN, EQ to position A, and Phase to 0°.