Filter
Top Products
| Fathom IWSPage 30
TROUBLESHOOTING
No sound from subwoofer.
1. Verify that Fathom IWS amp is plugged in, turned “ON” & that
front panel lights are “ON”. If the Fathom IWS amp will not
power up, check the circuit breaker that feeds its outlet.
2. Test subwoofer using DEMO button on front panel of amp– if sub emits demo
tones the subwoofer’s internal circuitry is ne and an input problem is likely. Check
the input cable connections at the Fathom IWS amp and at the receiver/preamp/
processor.
3. Verify that your receiver’s subwoofer settings have not changed.
4. If your other speakers play, but the Fathom IWS does not, try changing the cable
that connects the Fathom IWS to the system.
5. If the problem persists, call your dealer or JL Audio Technical Support
for assistance.
e bass level has changed.
1. Make sure your level settings (on the Fathom IWS amp and in your receiver/
preamp/processor) have not changed.
2. If you are using the Fathom IWS’s “Master Level” knob to set the subwoofer level,
conrm that the “Level Mode” switch is set to “Variable”.
3. Verify the position of the ELF Trim knob.
Hums or other unusual noises from your Fathom IWS
1. See Input Mode discussion on page 20 of this manual, especially if any upstream
components, cables, etc., have recently changed.
2. Turn o the Fathom IWS, disconnect all its input and output signal cables, turn the
Fathom IWS 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 23 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 dierent main listening seat location. Changing your seating location can
have a HUGE eect on how your system sounds. See the placement discussion on
pages 6-10 of this manual.
A.R.O. Calibration attempt gives fast blinking Calibrate light
1. Be sure that the included JL Audio Microphone is properly plugged into the
front panel jack. Calibration will ONLY proceed with the JL Audio microphone
connected. Connecting any other mic will cause the calibration to fail.
2. If calibration fails with the JL Audio microphone properly connected, try running
calibration again with the microphone placed ~ 6 feet away from the Fathom IWS
speaker enclosure. If calibration fails again, the microphone or microphone cable
is bad and will need to be replaced. Contact JL Audio Customer Service.