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CRB350 · CRB250
POWER RATING
The CRUNCH CRB Subwoofer Enclosures are designed for high bass levels. Anyhow it is possible, that unsatisfying soundcharacteristics could
be caused by too low or too high amplifier power. In certain circumstances this even can cause a damage to the loudspeakers.
It is recommended to choose rather a more powerful amplifier (ca. 10-25% more Watts RMS than the max. RMS Power Rating of the Woofer) and
to use the amplifier not at the maximum output level (low distortion factor, good sound characteristics). A weaker amplifier at the maximum level
causes worse sound characteristics due to the higher distortion factor.
Never crank up the output volume of your amplifier to the maximum level or run the amplifier into the clipping range. If the sound is
distorted and not clean, turn back the level until the distortions disappear.
Attend thereto the following recommended power ratings:
CRB250
• One amplifier with an output power of ca. 200 up to 300 Watts RMS (Sinus) into 4 Ohms
CRB350
• One amplifier with an output power of ca. 280 up to 400 Watts RMS (Sinus) into 4 Ohms
Please attend, that a lower impedance operation causes a higher output power of your amplifier. This increasing could causes that the amplifier
run into the clipping range. This events when more loudspeakers are connected in a parallel-operation-circuit to the amplifier.
Please attend the minimum impedance of the installed amplifier. In case of doubt ask your
IMPORTANT NOTE: The Subwoofer Enclosures have no integrated limiter or clipper, which is limiting the level upwards. Overamplified
bass peaks leads inevitably to a burn out of the voice coil of the woofer. A burn out of the voice coil, caused by clipping/overamping is
not covered by the usual warranty.
IMPORTANT NOTES
• Choose a suitable location for your Soundsystem, that neither the driver's field of vision nor the security of the inmates will be
affected. This stands also for Airbag-Zones and Safety Belts. The permanent temperature of the location should not be lower than
5°C and not higher than 50°C. Protect the device from moisture and humidity.
• Ensure that your subwoofer enclosure will not get loose during the drive and hurt someone in the passenger cabin. It is
recommended, that you mount the subwoofer enclosure with suitable belts or any other mounting solutions in the trunk area.
• Please observe that you don't damage any serial components of your vehicle (Airbags, Wires, Gastank etc.) during the installation of
your Soundsystem by drilling or any other operations.
• Never screw or mount any other devices (amps, caps etc.) onto the subwoofer enclosure, this may cause damage to the electricity.
• For your personal concerns you should choose a appropriate sound level for the subwoofer enclosure, that neither the roadworthy
of the driver nor his concentration will be disturbed, that he is able to notice possible traffic noises and acoustical warning signals.
• Modern Car Audio Soundsystems provide very high acoustic pressure beyond the 100 dB mark. Please observe in this case, that
permanent use of high sound levels may cause damage to your ability of hearing.
• Please ensure by any means the correct polarity of all connections. Faulty installed and connected devices may get damage the
vehicle and the device permanently.
• Never connect the speaker terminals with the 12 Volt power supply, otherwise the speakers may get damaged.
Distribution: Audio Design GmbH
Am Breilingsweg 3 · 76709 D-Kronau/Germany
Tel. +49 (0)7253/9465-0, Fax +49 (0)7253/9465-10
www.audiodesign.de
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