MBL Radialstrahler 116F, Owner'S Manual

Page: 6 / 48

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1. Speaker setup
1.1 Checking up your listening room
A simple ”clapping test” will give you important information on the acoustic conditions in your room. Walk up and
down in the area where you want to set up the speakers and clap your hands loudly. Pay attention to the echoes
reflected. If they are either extremely loud or extremely long (flutter effect), the room´s reverberation is high and
it is recommended to work with dampers.
To damp the room use sound absorbing elements like carpets and curtains. Diffusors like plants or bookshelves
between the corner of the room and the speakers help to improve the acoustic pattern.
1.2 General setup tips
For best performance the speakers should be set up in front of a hard part of the room (e.g. a solid wall or in front
of no vibrating windows).
If possible, set up the speakers on the longer wall.
Shelves or hi-fi racks located between the speakers (also at the wall) should not be higher than the midrange
driver of the speaker, approx. 1 meter (40 “).
1.3 Speaker positioning
Transfer your room dimensions (longer and shorter side of the room) on a handmade drawing (note the example
given on page 6).
Set the speakers on the drawing.
To find out the optimal position proceed as follows:
Stereo base (a)
At first define the stereo base, that is the distance between the speakers (a). The stereo base should be at least 2
meter (80“) up to 3.5 meter (140“).
Back wall (b) and side wall (d) distance
The distance between the back wall and the speakers (b) and the distance between the side wall and the speak-
ers (d) should both be at least 0,8 meter (32’’).
However these two distances should not be the same. A ratio of 1:1,3 is recommanded, the speakers always be-
ing closer to the longest wall.