Neumann.Berlin KH 420, Руководство по эксплуатации

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| KH 420
Installing and connecting the KH 420
CAUTION
Danger of injury and material damage due to tipping/dropping of the product!
If improperly mounted, the product and/or the mounting hardware (e.g. rack) can tip over
or drop down.
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Always have the product mounted by a qualified specialist according to local, national
and international regulations and standards.
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Use the mounting systems recommended by Neumann and always provide sufficient
additional protection against tipping or dropping!
CAUTION
Damage to the product due to overheating!
If air cannot circulate properly around the cooling fins on the rear of the product, the
amplifier(s) may overheat leading to premature activation of the thermal protection system
which limits the maximum output level of the loudspeaker. In rare cases, damage to the
product may also occur.
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Never cover the entrance and exit slots for the Accelerate Heat Tunneling™ cooling fins.
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Regularly clean the Accelerate Heat Tunneling™ cooling fins.
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When installing the product into tight spaces such as wall recesses, maintain an air gap
of at least 5 cm (2") around the rear of the product and provide sufficient air circulation.
If necessary, use forced-air cooling (e.g. when flush mounted in a wall), or use a REK 4
(remote electronics kit).
It is possible to remove the electronics panel and locate it remotely, using the REK 4
accessory and Cable Packs, CP nn.
For information on installation, please refer to the supplied “Getting Started Quickly”
supplement. This will help you set up the loudspeakers in a way that will give you the
best acoustic performance from the system.
For further information on setting up loudspeakers, please refer to the “Questions &
Answers” section on the product page at www.neumann.com.
For more information on building systems using Neumann loudspeaker products, please
refer to the “Product Selection Guide” at www.neumann.com
Preparing the loudspeakers
CAUTION
Risk of staining surfaces!
Some surfaces treated with varnish, polish or synthetics may suffer from stains when they
come into contact with other synthetics. Despite a thorough testing of the synthetics used
by us, we cannot rule out the possibility of staining.
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Do not place the KH 420 on delicate surfaces.
The MMD™ waveguide of the KH 420 is rotatable. Rotating the MMD™ waveguide allows you
to place the bass driver either side of it. If the cabinet is positioned upside down, the MMD™
should also be upside down to maintain an optimum response in the bass-midrange crossover
region. In all cabinet orientations, the acoustical axis should point towards the engineer’s
listening position, or the center of the listening area, in both the horizontal and vertical planes
– see the definition of the acoustical axis. Rotating the
MMD™ waveguide
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