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Port bungs
WARNING: Care must be taken not to insert the port bungs too far into the
port, as this may result in the foam bung being lost inside the cabinet.
If the loudspeaker is to be installed in a small room, typically 9 sqM ( 80 sqFT), or
a room known to reproduce accentuated bass response, it may be desirable to
fit port bungs. However, experimentation is recommended with positioning of the
loudspeaker in the room prior to fitting. To optimise a loudspeakers performance,
ensure it is not positioned too close to a wall or near the corners of a room (refer to
the suggestions on pages 4 and 7).
If room aesthetics or layout predetermine speaker positioning, or experiencing the
presence of accentuated bass, please move on and read point 1 for the Silver 1 and
2 and point 2 for the Silver 6, 8 and 10.
1. Where bookshelf/ stand-mount speakers (Silver 1 & 2) are to be sited in close
proximity of less than 8 inches/ 20cm to a rear wall (such as on a bookshelf,
positioned in a cabinet or on a stand close to a wall), we recommend fitting port
bungs to the ports. This will reduce the bass ‘boom’ and assist the loudspeakers
to reproduce their best performance under these environmental conditions.
2. Where floor-standing loudspeakers (Silver 6, 8 & 10) are to be sited in close
proximity of less than 18 inches/ 45cm to a rear wall, we recommend fitting the
port bungs. This will reduce the bass ‘boom’ and assist the loudspeakers to
reproduce their best performance under these environmental conditions.
What is Bass Boom?
Bass ‘Boom’ (sometimes termed as overhang) is generally caused when bass energy
from the loudspeaker ‘excites’ room modes and causes an accentuation at a particular
frequency, or number of frequencies
When fitting port bungs the overall bass extension will not be reduced, however bass
energy/ output around the port tuning frequency will be reduced. This has the effect
of reducing bass ‘boom’ while increasing bass clarity and apparent agility.
Experimentation is highly recommended.
Running In
The speakers will require a level of “running in” before they have reached the
optimum. The running in process for the Silver Series will be approximately 60 - 70
hours of playback. During the running in process, it is recommended not to push the
loudspeakers to high levels as this can cause damage to them. During this time, you
will notice the sound open up and become clearer, tighter and a lot more controlled.
ENGLISH