Focal BUS 20 User Manual

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RETURNED TO US WITHIN 16 DAYS OF PURCHASE.
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Focal® is a trademark of Focal-JMlab® - BP 374 - 108, rue de l'Avenir - 42353 La Talaudière
cedex - France - Tel. (+33) 04 77 43 57 00 - Fax (+33) 04 77 43 57 04 - www.focal-fr.com
BUS 20 & BUS 25
User Manual
Thank you for choosing Focal. To get the best results from your speaker, please
ensure you follow these recommendations, and keep carefully this user manual
so that you can consult it later. If not followed correctly any fault observed may
not be covered by the guarantee.
notice_Bus20_Bus25.indd 1notice_Bus20_Bus25.indd 1 20/12/07 14:59:4720/12/07 14:59:47

Focal BUS 20 Specifications

General

RCA Input	Yes
High Level Input	Yes
Crossover Frequency	50Hz - 150Hz
Phase Switch	0° / 180°
Type	Active Subwoofer
Speaker Size	8 inches
Frequency Response	150Hz

Summary

Precautions and Warnings

General Precautions

Recommendations for optimal performance, environment, and safe operation.

Hearing Safety Warning

Critical alert regarding potential permanent hearing damage from sustained high volume listening.

Supplied Elements and Cable Routing

Supplied Elements

List of items included with the subwoofer package, such as cables, remote control, and fixings.

Cable Routing

Guidelines for safely passing power and signal cables through the vehicle's interior.

Installation Guide

Installation in the Trunk

Step-by-step guide for securely mounting the subwoofer enclosure in the vehicle's trunk.

Installation Under a Seat

Instructions for safely fixing the subwoofer enclosure under a vehicle seat without impeding mobility.

Connections and Settings

Power Supply

Details on connecting the 12V power supply from the vehicle's battery.

Audio Inputs

Explanation of low-level (RCA) and high-level inputs for connecting to the car radio.

Sound Level Adjustment

Guidance on matching the subwoofer's volume level with the front system using remote or direct adjustment.

Phase Inverter

How to set the subwoofer phase for optimal bass response.

Adjustable Cut-off Frequency

Information on setting the crossover frequency to integrate with the front system.

Troubleshooting and Specifications

Repair Guide

Common issues with their causes and solutions for the subwoofer.

Technical Specifications

Detailed specifications for both Bus 20 and Bus 25 models, including dimensions and power.

Guarantee Information

Overview of the Focal guarantee coverage and terms.