Question about Infinity BASSLINK Car Subwoofer
You have an internal problem in the amplifier of the sub woofer box. You need to take it in to be checked at a service center, there are no quick fixes for them. Sorry,
Posted on Jul 01, 2008
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Posted on Jan 02, 2017
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Feb 16, 2012 | Audio Players & Recorders
The following conditions will cause the Protection LED to go on:
• Initial power-up: For approximately five seconds after initial power-up, the relay
speaker connection circuitry is deactivated and the speaker output is muted. If everything is operating normally, you will hear an audible click at the conclusion of this brief period, as the circuitry is activated and the Servo 120a begins delivering signal to connected speakers (at which point the Speaker LED will light if the Speaker on/off switch is in its "in" position). It is normal for the Protection LED to fade gradually after the amplifier is powered off.
•Overheating: A temperature sensing device in the Servo 120a will cause the relay speaker connection circuitry to be activated (and the Protection LED to go on) whenever the operating temperature of the unit rises above a safe level. To guard against this problem, make sure the Servo 120a receives adequate ventilation on all sides ; in extreme environmental conditions, you may also
want to consider the use of cooling fans.
•Severe overcurrent conditions: This occurs whenever the signal being output
from the Servo 120a rises to a level above 20% THD (Total Harmonic Distortion).
•Shorted speaker cables: This will occur if, due to faulty wiring, the hot and ground signals being output by the Servo 120a short to one another.
•Output impedance drops below 2 ohms: This can occur if the Servo 120a is connected to inappropriate speaker systems (see the "Setting Up and Using the Servo 120a" section in this manual for more information).
•DC voltage detected at speaker output: The most likely cause of this is an internal failure. In general, any time the Protection LED lights up (other than during the approximately five seconds following initial power-up), there is reason to be concerned. If this occurs, turn the Servo 120a off immediately and carefully check all wiring and external devices in order to locate and correct the condition that caused the LED to light up in the first place.
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