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Model 642e SB Powered Subwoofer
CAUTION: To reduce the risk of electric shock, do not remove the
cover (or back). No user serviceable parts inside. Refer to qualified per-
sonnel.
WARNING: To reduce the risk of fire or electric shock, do not expose
this appliance to rain or moisture. This device generates a fair amount of
heat. Make sure nothing blocks the ventilation openings on the top and
bottom of the unit.
The lightning flash with arrowhead, within an equilateral
triangle, is intended to alert the user to the presence of
uninsulated “dangerous voltage” within the product’s
enclosure that may be of sufficient magnitude to con-
stitute a risk of electrical shock to persons.
The exclamation point within an equilateral triangle is
intended to alert the user to the presence of important
operating maintenance (servicing) instructions in the
literature accompanying the appliance.
For Future Reference
Record your speaker and amplifier serial numbers and date of
purchase here:
Model Number
Serial Number
Date of Purchase
The serial number is found on the back panel.
Table of Contents
Safety Precautions
Safety Precautions
3 Model 642e SB
3 What's THX?
4 Subwoofer Rear Panel
5 Features
6 Connecting Your Subwoofer
6 Subwoofer Line Out to Low Level In
6
Using the Low Level Output
6
Power Connection
7 Low Level Connections with One Subout/LFE Output
8 Low Level Connections with Two Subout/LFE Outputs
9 Placement and Operation
9 System Setup
9 Subwoofer Tuning Without an SPL Meter or Test Tones
9 How Much is Enough?
10 Dual Subwoofer Placement
10 Using the Subwoofer LowPass Control
10 The Phase Invert Control
10 A Word About Bass, Center Channel Modes
and System Set Up
10 Care of Your Subwoofer
11 Subwoofer Troubleshooting Guide
11 Model 642e SB Specifications
Copyright © 2004 Atlantic Technology International.
Specifications are those in effect at the time of printing. Atlantic Technology reserves the
right to change specifications or designs at any time without notice. THX and THX Ultra 2
are registered trademarks of Lucasfilm, Ltd. Dolby Digital, AC-3, Dolby Stereo and Dolby
Pro Logic are trademarks of Dolby Laboratories Licensing Corporation.