JL Audio Fathom SA-600W, Руководство пользователя

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| Fathom SA -600W Page 36
TROUBLESHOOTING
No sound from subwoofer.
1. Verify that the SA-600W is plugged in, turned “ON”, with the Home
Screen menu options displayed on the LCD Display. If the SA-600W
will not power up, check the circuit breaker that feeds its outlet.
2. Verify that your receiver’s subwoofer settings have not changed.
3. If your other speakers play, but the connected subwoofer does not, try changing
the signal cables that feed the SA-600W or the speaker cables connecting the
subwoofer to the SA-600W.
4. If using the High Level Inputs, verify the correct electrical polarity of each
channel’s input signal.
5. A Protection Mode message appears on the LCD display if the SA-600W’s internal
temperature exceeds maximum levels. This built-in safeguard disables the output
signal to prevent damage to internal circuitry. Typical causes for this condition
are poor air circulation, likely due to confined mounting locations, and should be
corrected. Once the temperature decreases to normal levels, the Protection Mode
will deactivate and the SA-600W will automatically resume normal operation.
6. If the problem persists, contact your dealer or JL Audio Technical Support
for assistance.
Weak sound or poor performance when using the High Level Inputs.
1. Verify the correct electrical polarity of each channel’s input signal.
The bass level has changed.
1. Make sure your GAIN settings on the SA-600W and the level settings on your
receiver/preamp/processor have not changed.
2. Verify that the ELF TRIM setting has not changed.
Hums or other unusual noises from your subwoofer.
1. See Input Mode discussion on page 16 of this manual, especially if any upstream
components, cables, etc., have recently changed.
2. Turn off the SA-600W, disconnect all its input and output signal cables, turn the
SA-600W back on. If the noise disappears, the noise is being caused elsewhere in
your system - reconnect cables one at a time to help locate the problem.
Bass sounds “muddy” or “too heavy”.
1. Try decreasing the 25 Hertz level using the ELF Trim control. Muddy bass can
sometimes be caused by too much low frequency output in a moderately sized
room.
2. Decrease the overall subwoofer level.
3. Verify your receiver’s subwoofer settings.
4. Try a different main listening seat location. Changing your seating location can
have a HUGE effect on how your system sounds. See the placement discussion on
pages 6-9 of this manual.