System Planning - Excalibur X275.2 Manuel Du Propriétaire

System planning

Proper system planning is the best way to maximize your amplifier performance. By
planning your installation carefully you can avoid situations where the performance of
the reliability of your system is compromised.Your authorized dealer has been trained to
maximize your system's sonic potential. Your dealer is a valuable resource in helping
you with your system design and installation
Speaker requirements
Each channel of your amplifier can easily
drive 4Ω speaker loads when used in the
stereo mode.When a channel-pair is bridged,
the recommended minimum load impedance is
3Ω for subwoofer use, and 4Ω for full range
operation. Although operation with lower
impedance is not likely to cause immediate
damage to the internal circuitry, the unit will
most likely overheat, causing the thermal
protection circuitry to shutdown the amplifier.
When the chassis cools down, normal
operation will resume. Continuing to operate
the amplifier under these conditions is not
recommended and will reduce its life
expectancy.
Most speakers designed for car audio
operation are 4Ω impedance. Connecting
two such speakers in parallel will result in a
2Ω impedance load as seen by the amplifier.
Some subwoofer models feature a
dual 4Ω voice coil design. Connecting
these voice coils in parallel will result in a
2Ω nominal impedance, which is not
recommended for use with bridged channels
of your amplifier.