Question about SpeakerCraft BB2125 2-Channel Amplifier
I just recieved the amp from a friend who indicated it wasn't working. When I power up, the red led indicator light, indicating "protected" lights up but I do not get the green led "active" to light up.
On this pwr up, I didn't have an active input source connected to it, will it only switch to active when it senses an input source connected?
It is a signal sensing turn on unit, so will not turn on until you have supplied signal to it. Plug it into a signal source and see what it does. But unfortunately, in my experience the protection light coming on means there is a fault in the amp.
You can download the user manual for the amp from here. Click downloads in the middle of the page:)
Posted on Aug 19, 2008
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Posted on Mar 10, 2011
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Mar 01, 2014 | Harman Kardon Harman HK 990 Amplifier
CLIP: red, to the left of each Gain control.
Normal indication: illuminates whenever the amplifier is driven beyond full power. The LED's brightness indicates the amount of distortion. Distortion that causes only brief flashing may not be audible.
During muting, the indicator fully illuminates. This occurs during normal "On-Off" muting.
•Bright red illumination while the amp is being used indicates either thermal muting or a shorted output.
•If the amplifier overheats, the fan will run at full speed, and operation should resume within one minute. Allow the fan to run, and make sure the amplifier ventilation is adequate.
•A shorted or overloaded output circuit will cause excessive Clip flashing and possible overheating.
•If distortion is audible without a Clip indication, the problem is either before or after the amplifier. Check for damaged speakers or overloaded signal source. The amplifier Gain control should be in the upper half of its range to prevent input overload.
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