It is possible to use more powerful amplifiers than those suggested:
in this case, however it is necessary to be careful when regulating the
volume in order to avoid the speakers damage by sending them a too
powerful signal.
It is also advisable, if using a low powered amplifier, not to keep the
volume switch at the maximum level (especially if the tone controls
are changed) on order to avoid serious damage to the tweeters.
Generally, the recommended power amplifier has to be directly
proportional to the size of the listening room. It should have a
minimum electrical power of 1W each cubic meter. The power amplifier
is suitable for an impedance of 4 ohm.
For connections between source and amplifier, refer to the manuals
supplied with the devices.
Amplifiers/
N.B.
Inversion of the polarities will NOT damage the
speakers in any way. The quality of the sound will,
however, be impaired (with a considerable loss of the
power), and therefore the stereo image will be altered
with a difficult location of the sources.