Mordaunt-Short 500 Series THX - Manual (Page 9)

9
9. Should more than 6dB of cut be required (i.e. one measurement is more
than 12dB above the average of the others) the notch filter can be set
to the –12dB setting and the process repeated.
Driver Precautions
By far the most common cause of loudspeaker failure, and one that is
understandably not covered by guarantee, is damage to the voice coils
caused by amplifier overload. This is generally due to the common belief
that if a speaker is rated at more than the amplifier’s output rating, there is
no chance of blowing that speaker.............
This is not the case!
A relatively small amplifier (i.e. 20 watts) can damage speakers like these
by “clipping” the signal, a symptom identified by lack of detail in music
and distortion. If this occurs TURN IT DOWN! If you don’t want to
blow up your speakers but want louder sound, please purchase a more
powerful amplifier.
Grilles
Mordaunt-Short loudspeakers have been designed for optimum listening
with grilles in place. The best overall performance will be had with the
tweeter protection grilles removed (if fitted, they are held in place
magnetically) and with the main grilles in place. Take care when removing
the tweeter grilles as the tweeter domes are very sensitive.
Cabinet Care
Cabinets should be dusted and lightly polished as required. Do not use
solvent based cleaners as they may damage the cabinet surface. Do not
expose the cabinets to strong, direct sunlight, high temperatures, high
humidity or allow them to become wet.
TAKING CARE OF YOUR LOUDSPEAKERS