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Atlantic Technology
®
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 find the
solution. If the problem persists, please contact your local authorized Atlantic Technology dealer.
Problem
Possible Cause
Possible Solution
No bass output
AC power cord unplugged or plugged into a non-working outlet.
Plug into a working outlet.
Input cables not securely connected or defective.
Check all connections, then try another input cable.
Audible buzz
Input cable not securely connected or defective.
Check all connections, then try another input cable.
or hum
Single HI LEVEL input connected to the RIGHT channel only.
Connect to the LEFT input channel.
Ground loop through antenna or cable TV system input.
Test by disconnecting antenna and/or cable system input leads.
If hum goes away, install isolation balun(s) at that point.
Weak bass
Subwoofer too far from the wall.
Move the subwoofer closer to a wall or corner.
VARIABLE INPUT LEVEL set too low.
Turn control up somewhat.
Weak bass: vague stereo image
Input source connected to HI LEVEL inputs is wired out of phase.
Check speaker wire connections and reconnect in proper phase.
Model T70 PBM Specifications
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. Dolby Digital, AC-3,
Dolby Stereo and Dolby Pro Logic are trademarks of Dolby Laboratories Licensing Corporation. DTS is a registered trademark of DTS Technology.
Type/Features
Powered Subwoofer with Sealed Acoustic-Suspension Enclosure
24 dB/Octave variable crossover
Line-level stereo inputs and thruputs
High-level stereo inputs and high-level, high-pass bass filtered outputs
Absolute phase invert switch
Auto signal sensing on/off
Driver
(1) 10" long-throw woofer, 2", 4-layer vented voice coil, vented
motor system
Amplifier Power
125 Watts RMS discrete linear Class A/B power amplifier
Amplifier Distortion
<0.025%
Frequency Response
25-150 Hz␣
±
3dB (in room)
Peak output
(SPL)
103dB
Dimensions
11.375in x 16.5in x 14.9in; 290mm x 420mm x 380mm
Weight
37.5lbs.; 17kg.
