Troubleshooting
We welcome your input. If you should have any problems with your KRK monitors, we want
to hear about it. You can either email us (please provide your phone number with your
email) or contact our technical support department directly at 954-949-9600. We're
constantly striving to better our already high quality. Your comments are appreciated.
E-mail: service@krksys.com
There is no power.
• Check to see if the power cord is plugged into both the IEC socket on the rear panel of
the active speaker and into the AC mains. Verify that the AC mains are active by using an
approved AC tester or simply connect a lamp with working light bulb. In some cases, the
AC mains may be controlled by a light switch or power strip suppressor that may not be
in the ‘on’ position.
• Verify that the power switch on the active speaker is in the ‘on’ position.
• Check to see if the AC mains voltage is matched to the correct operating voltage
requirements. If the AC mains voltage is higher than the selected voltage it is possible that
the fuse needs to be replaced. For example, if the AC mains voltage is 240VAC and the
selected voltage on the active speaker is set incorrectly to ‘110-120VAC’, than the fuse
will break to protect the active speaker electronics.
• Check to see if the power light is illuminated. The power light can often to be found on the
front panel of the monitors and the rear panel of the subwoofers. The power light is part
of the triangle contained in the ‘KRK’ logo. If the power light is not illuminated, turn the
power switch OFF and check the A/C mains fuse(s). The fuse is located directly below the
power receptacle. Please see the user guide that came with your monitor for more infor-
mation.
NEVER USE A LARGER AMPERAGE FUSE THAN IS SPECIFIED!
After the fuse has been checked and replaced, turn the power switch back on. The power
light should illuminate.
• Check to see if a fuse change was needed and upon powering the monitor back up the
fuse(s) blow again, the monitor needs to be returned to the dealer where you purchased
it or to KRK for servicing.
There is no sound.
• Repeat steps in the previous troubleshooting section above before continuing to the next
steps.
• Check to see if all other audio devices using the same AC outlet are still operating.
• Check to see if the audio source cable is plugged into both the source output and the
monitor input.
• Check to see if the System Gain pot is turned up fully clockwise. The System Gain pot on
monitor models E8B, VXT and ROKIT2 series should be set to + 6 dB. For all other mod-
els not mentioned please consult the user manual that came with the product.
• Check to see if the signal source (E.g. mixing console, work station, CD player, etc.) is
turned up to a level that can properly send a signal to the monitors.
• Check to see if one of the monitors is working. Exchange the audio input cable from the
non-working monitor to the working unit. This will determine whether it's really the
monitor, a faulty cable, or some other glitch in the audio chain.
• If the monitor is still not responding, it should be returned to the dealer where you
purchased it or to KRK for servicing.
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