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After this, the speaker may be played at normal listening levels. The break in process will be complete
after 200 to 300 hours.
6. LOUDSPEAKER PLACEMENT AND SET-UP
NOTE:
DO NOT place the loudspeakers close to cathode ray type
monitors or projectors, as the very powerful magnets used
in the drivers may affect the picture. We recommend a
minimum separation of 2m.
Before the loudspeakers can be set up, the break in procedure in section 5 must be completed.
The German Physiks PQS-402 is an extremely high performance loudspeaker and optimum
performance will only be achieved when set up by a trained technician. For this reason the supplying
audio dealer will carry out the set-up for the customer.
Listening Room Layout
The following points will help you optimise your listening room layout.
1. The left and right sides of the room should be symmetrical. If the room is asymmetrical, this will
degrade the quality of the stereo image. This is because most of the sound energy that you hear is
reflected before it reaches your ears.
2. Place the speakers symmetrically in the room, i.e. the same distance from the centre line of the
room and the same distance from the rear wall.
3. Avoid placing the speakers similar distances from the side and rear walls, as this may lead to an
uneven bass response
4. Avoid having any hard surfaces between your listening position and the loudspeakers. This will
generate additional reflections that may degrade the stereo image. For this reason, where ever
possible equipment should be located at the side of the room. If you have a hardwood floor, it may be
advantageous to place a carpet on the floor covering the area between the loudspeakers and the
listening position, as this will reduce unwanted early reflections.
5. Avoid having the listening position closer than 1.2m from the rear wall as early reflections from this
wall will degrade the stereo image.
Loudspeaker Placement
Distance from rear wall:
We recommend that you start with the speaker positioned 1.5m from the
rear wall. As you move the speaker closer to the wall the level of the bass response will be increased.
The converse will be true as you move the speaker away from the rear wall. The PQS-402 should not
be placed closer that 1m from the rear wall. If the speaker is too close to the rear wall, not only will the
bass response be excessive, but the stereo image will be degraded due to an increase in early
reflections. Aim to find a position that provides an even bass response so that all the bass notes in the
music are reproduced at an equal level. Be sure to choose a recording that itself has an even bass
response.
Distance from side wall:
We recommend that the distance between the centres of the DDD towers
be 2/3 of the distance of the loudspeakers from the listening point. Moving the speakers further apart
will degrade the stereo image.
Summary of Contents for PQS 402
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