Krell S-300i User Manual download pdf (Page 30)

AC grounding becomes critical when connecting high performance

audio components. When you mix and match audio components,

each with its own ground potential, a low frequency hum may

occur in one or both loudspeakers. This sometimes occurs when

introducing a new component into a system.

If a low frequency hum emanates from the loudspeakers when you

place the S - 3 0 0 i amplifier into the system, follow these simple

troubleshooting steps:

1 . Check all cable terminations, making sure they have solid sol-

der joints and are of sound construction.

2 . With the amplifier off, remove the interconnect cables, then

turn the amplifier on. If the hum disappears, turn the amplifier

o f f and reinsert one of the interconnect cables. Turn the

amplifier back on. If the hum reappears with one or both

cables reinserted, there may be a defective cable. Have the

interconnect cables checked before proceeding.

3 . If the interconnect cables are sound, you may be experiencing

a ground loop. Please contact your authorized Krell dealer,

d i s t r i b u t o r, or Krell for suggestions on how to solve this

p r o b l e m .

How to Troubleshoot System Noise

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Krell S-300i User Manual Page 30