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Questions and Answers
Q. Should I leave the KAV-1500 amplifier on at all times?
A. No. The amplifier does not have a stand-by mode. Leaving it on at all times would
result in considerable heat output and power consumption. For best results, turn the
amplifier off when not in use, and allow a five minute warm-up after it is switched to the
operational mode. See Amplifier Operation, on page 19.
Q. When I turn the amplifier on there is a loud hum through the loudspeakers. What
should I do?
A. When a new component is introduced, a low frequency hum may occur in one or
both loudspeakers. Check that all input and output connections and cables are of sound
construction. See Troubleshooting System Noise, on page 19. If the connections and
cables are sound, you may be experiencing a ground loop. This can often be easily
eliminated. Please contact your authorized Krell dealer, distributor, or Krell for
suggestions.
Q. When I connect the amplifier to my system using the single-ended inputs, a loud
buzz comes from my loudspeakers. What is it?
A. Check that the shorting pins for the KAV-1500 are inserted into the XLR inputs (the
unit is shipped with the pins in place). When using the single-ended inputs, these
shorting pins must be inserted between pins 1 and 3 to keep external noise from
corrupting the signal. For more information, see Connecting the KAV-1500 Amplifier
to Your System, on page 10.
Q. Can I bridge all the channels on my KAV-1500?
A. The KAV-1500 has five channels. You can bridge four of those channels to operate
as two channels. One channel must remain unbridged. See Bridged Operation, on
page 16.
Q. I want to bridge the channels on my KAV-1500 but when I open the amplifier, there
are ribbon connection cables already in place. Should I remove them?
A. No. Your amplifier is shipped with ribbon connection cables in place and polarized to
ensure the correct phase (see Figure 3, on page 13). Do not remove or change these
ribbon connection cables. The KAV-1500 is not reconfigured for bridged or Multi Amp
Throughput (MAT) operation when it is shipped to you. Use the additional ribbon
connection cables shipped with the amplifier and instructions on pages 12 and 16 to
reconfigure the KAV-1500 for bridged or MAT operation.
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Krell KAV-1500 Amplifier