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Power Dynamics PDSM Series Gebruiksaanwijzing pagina 4

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Beschikbare talen

Beschikbare talen

Level controls:
• With the volume control it's possible to adjust the input sensitivity, turn left for decreasing the input sensitivity and
turn right for increasing the input sensitivity.
• Use the treble control for high frequency adjustment, turn left for decreasing high frequencies and turn right for
increasing high frequencies.
• Use the bass control for low frequency adjustment, turn left for decreasing low frequencies and turn right for
increasing low frequencies.
Connecting your system:
• Make sure your complete system is turned off and all faders and controls should be set at their minimum before
connecting the speakers.
• Use the correct cables for your speaker system.
• Don't forget to connect the passive speaker to the speaker output of the active speaker.
• After all the connections are made, you are able to turn on the system.
Speaker positioning:
The speakers have to be placed well into the room in order to maximize the delay of reflections and to remove their
effects from the sphere of spatial perception.
The perfect and most effective distance lies between 85 cm (33 inch) and 1.5 m (5 ft) - depending on the listener's
position. However, you can also obtain very good results at a distance of 70 cm (28 inch). An easy way to home in
on the right distance is to sit down in the listening seat and ask a friend to hold up a mirror and move it along the
wall. As soon as you see the speaker in the mirror, you know where the acoustic reflection comes from. Now
measure the distance between the speaker and mirror, and mirror and listening seat, then subtract the distance
between the speaker and listening seat. You will see from the result whether you are above or below the critical
distance of 1.7 m (5.6 ft).
If you are well below this value, you can try to dampen or diffuse critical room resonances in order to reduce their
effects. In the case of dampening critical resonances, part of the energy is destroyed by friction. For instance,
heavy fabrics can be hung a few centimeters from the wall which dampen the reflections. If you want to go a step
further, you can even use special dampening material. In this case we recommend that you use the heavy fabrics.
We can assure you that an area of 1 m (3.3 ft) height and 0.5 m (1.6 ft) width put on the reflection point may
produce astounding results. In the case of diffusing critical resonances, the sound should be reflected in different
ways. A shelf with many books of different sizes can do the trick. However, you can also buy so-called diffusers,
specially designed for the diffusion of sound waves.
If you think an excellent low-frequency performance is important, we recommend you to leave enough space
between the speakers and the back wall. The removement of unnecessary high-frequency killers, e.g. by drawing
the curtains, can result in a more dynamic sound. We recommend that you use dampening material sparingly and
only in the case of real disturbances. Keep the curtains open!
Make sure, while setting up the speakers, that the distance between the speakers can be 1.2 times as much as the
distance between the speakers and the listener. All of this, results in a large sound stage, and every single
instrument is better separated from the others in terms of room space.
Changing fuses:
Under normal operation the fuses should not blow. Usually a blown fuse is caused by overload or faulty conditions.
Do not change the fuse by yourself; this should be done by an authorized technician. If the fuse blows immediately
after turning on the power, then the speaker should be returned to a dealer for repair.
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