The 642e SB is capable of delivering very high output levels and wide dynamic range. When properly placed, it will provide smooth in-room bass response down to approximately 25Hz, with a peak SPL of over 105dB (2000 cubic foot space).
Subwoofer Rear Panel Subwoofer Rear Panel Figure 1 DESIGNED BY ATLANTIC TECHNOLOGY IN USA, LowPass Switch When in the NORMAL position, adjustment of the crossover can be made by the LowPass Control. If being fed a pre-filtered or THX signal, place the switch at the BYPASS position. (pages 5 and 9) Standby Switch When in ON position, the amplifier will always be on.
Be sure to try the Phase switch in both positions when you set up the 642e SB. Even if you’ve simply changed the built-in crossover settings it’s a good idea to try the Phase switch in both positions, since the crossover control and the Phase switch acoustically interact with each other.
110-120V 220-240V If desired, you can run a low level signal through the 642e SB and out to another unit. This way you can add an additional subwoofer with mini- mal additional wiring. The signal that comes out of the output jacks is identical to the input signal.
Low Level Connections Low Level Connections with Two Subout/LFE Outputs Figure 4 Sub Out/LFE Sub Out/LFE INPUT OUTPUT L/MONO Model 642e SB Powered Subwoofer...
Should you have difficulty achieving the correct subwoofer volume this way or should your Proces- sor/Receiver not have a subwoofer level control, you can use the 642e SB’s front mounted level control to make this adjustment. If you decide not to use an SPL meter try to set all the speaker levels the same using the Test Tones.
L/MONO Care of Your Subwoofer The 642e SB is constructed from 3/4” Medium Density Fiberboard. MDF is a non-resonant material ideal for speaker system enclosures. To clean the cabinet you may use a soft cloth either dry or slightly dampened with clean water.
Instruction Manual Subwoofer Troubleshooting Guide Once your subwoofer is set up, you should have many years of maintenance free enjoyment from your system. However, if you should encounter a problem, refer to the following guide to help you find the solution. If a problem persists, you should contact your local authorized Atlantic Technol- ogy dealer.
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