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NOW YOU ARE READY TO PLAY SOME MUSIC;
1. Put on a record, slide in a CD etc and start it playing
2. If you use a mixer, use it to set up optimum input and output signal levels – the level
meter should be peaking at around zero dB
3. Slowly turn up the volume controls on your KXR amplifier – if you have used the right
cables and made all of your connections correctly you should clearly hear music.
4. If you do not hear any music or it sounds all wrong, even at low volumes, check all your
connections and cables.
5. When the music reaches the desired listening level, stop turning up the amplifiers volume controls.
6. KXR amplifiers are designed to deliver professional quality sound reproduction and plenty
of power but it is possible to overload them. All KXR amplifiers feature 'Signal Clip Indicator' LEDs on
the front panel just above the volume controls. These LEDs illuminate when the incoming signal level
exceeds the safe operating level. It is acceptable for these LEDs to illuminate occasionally during
normal usage, however the gain structure of all KXR amplifiers has been carefully set so that these
LEDs serve as a genuine indication of overload... so if they come on frequently you are in danger of
damaging your amplifier and probably your speakers too.
•
Sending excessive signals from your external equipment to your KXR amplifier will cause a
distorted sound and can damage your amplifier and/or speakers. Kam products which have been
damaged in this way are not covered by your guarantee.
•
Your KXR amplifier is guaranteed against manufacturing defects but it is not guaranteed
against accidental user damage or normal wear and tear.
Ground Lift Switch
When using Unbalanced audio input connections you may, in some circumstances experience problems
with persistent hum. This can be caused by an 'earth/ground loop'. To help combat this all KXR amplifiers
have a 'ground lift' switch on the rear panel. This switch disengages the ground (aka earth) connection
from the mains power to the amplifier. The problem is rare with correctly configured Balanced audio
connections.
Thermal Protection Relay
All KXR amplifiers feature a thermally efficient central heat sink design and forced fan cooling. They are
designed to operate in the kind of relatively high environmental temperatures found in some venues and
we feel that they perform extremely well in such hostile conditions. However, because extremely high
environmental temperatures are always a hazard to high power amplifiers, all KXR amplifiers also feature
a Thermal Protection Relay. If the amplifier becomes too hot, it will temporarily go into a 'standby' mode
where the audio circuitry (but not the fans!) is switched off. This gives the circuitry time to cool down. If
this happens the amber LEDs marked 'Protect' (found on the front panel above the volume controls) will
illuminate. If this happens you should turn the volume controls to zero immediately and wait. When the
Protect LEDs stop being illuminated you can gradually return the volume controls to the desired listening
level. Under such circumstances it is advisable to return the volume controls to a slightly lower listening
level than that set prior to the engagement of the Thermal Protection Relay. The more power output you
demand from your amplifier, the higher the internal operating temperature is liable to be... so a lower
listening level will decrease the chances of the Relay engaging once more.
You will find loads more advice and information about setting up Kam audio equipment within the Tuition
area at www.kam.co.uk.
Thank you for reading these guidelines and enjoy your Kam KXR amplifier!
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