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User Guide
Installer and Users please note:
These instructions should be read carefully and left
with the user of the product for future reference.
The MA200 must be installed by a competent electrician
in accordance with the current IEE wiring regulations.
Connect the MA200 to the mains supply (nominally 230V
AC). If using a British 13 Amp mains plug (to BS1363A), fit a 13
Amp fuse in the plug. (If a 5A fuse is fitted in the plug it may fail
due to the surge when the amplifier is switched on)
Connect the wires to the plug as follows:
• Brown = live
• Blue = neutral
• Green/Yellow = earth
• The MA200 must be earthed. NEVER disconnect the
earth, even in an attempt to prevent 'hum'. If the earth were
disconnected, it could result in equipment connected to the input
(even indirectly through a mixer), such as microphones, becoming
live in the event of a fault (such as a liquid spillage into the
amplifier). The MA200 circuitry is only "loosely coupled" to earth
so it is extremely unlikely to be the cause of a "hum loop".
Install the MA200 away from sources of moisture; avoid
areas where drinks can be spilled onto the amplifier as this may
cause serious damage.
The MA200 requires a "line level" signal. This is the signal
level from a mixer, a CD or tape player, or the audio output from a
video player or satellite TV receiver. This signal level is generally
referred to as 0dBm or 775mV. A signal from a microphone,
electric guitar or turntable is not suitable; neither is the speaker
output from another power amplifier, which may cause damage to
the MA200 if connected to an input. A signal of 775mV RMS
(0dBm) is required to achieve full power output with the volume
controls set on maximum.
© N.J.D. Electronics 1997
IMPORTANT
Installation
MA200
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