Power And Acoustic Pressure; Mentor Sub - Dali mentor Anleitung

8 . 0 P O W E R A N D A C O U S T I C P R E S S U R E
How loud a speaker is able to play and still sound good is completely dependent on the signal
it has to reproduce. So, in practice, you cannot define an unequivocal level for use in comparing
different speakers.
Obviously, lots of pure, undistorted output from a large amplifier is better than a distorted signal
from a small amplifier stretched beyond its capacity. the signal from a distorting (clipping) amplifier
contains much more high-frequency information than an undistorted signal, and therefore puts
a heavy strain on the tweeter. consequently, speakers are often damaged by small amplifiers,
having to work too hard - and very rarely by large amplifiers, which are practically running idle.
It is worth noting that when the tone controls are turned above the neutral setting this significantly
burdens both speakers and amplifier. On a good sound system tone controls should only be used
to compensate for poor recordings and not to permanently compensate for weaknesses elsewhere
in the system. So, DALI recommends that the tone controls generally be set to the neutral position,
and you achieve your desired sound image through correct positioning of the speakers. Ensuring
that you keep the volume low enough so the sound remains clear and undistorted will minimise
the strain on both speakers and amplifier.
All DALI loudspeakers are designed with linear impedance to be an optimal amplifier load. the
result is significantly more open and detailed sonic image.
9 . 0 M E N T O R S U B
DALI MENtOR SuB has a built-in power amplifier and an active crossover. Both the amount
and quality of the deep bass depend on the size and shape of the room, and the position of
the subwoofer(s) and main speakers. If positioned near a side or back wall, the bass will be
accentuated. A corner location will accentuate it even more. Experiment with different positions to
find which provides the ideal sound for you. the airflow from the DALI MENtOR SuB is radiated
from the bottom of the cabinet. to ensure, that this airflow is not blocked, thus negatively affecting
the bass performance, we recommend placing the subwoofer with minimum 5 cm (2") of
clearance on all sides.
MENtOR SuB comes with a handy remote control (see figure 12).
On the rear side of the subwoofer you will find the amplifier (see figure 11), which has the following
features:
Amplifier back plate (figure 11)
1,2) Phase, frequency and volume adjustment
Press the relevant button and adjust to the desired value using the '+' and '-' buttons.
FREQuENcY RANGE: 40 - 120 Hz
VOLuME RANGE: 0 - 30 dB
PHASE SELEctIONS: 0°, 90°, 180° or 270°
12