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Important:
The loudspeakers may only be operated with the indicated nominal power and only with the
recommended high-pass and low-pass frequencies and slopes. Any operation with frequencies and
slops other than the recommended may cause damage to the loudspeakers. Do not mix the
frequencies and slopes, always use the same frequency and slope for the tweeters and woofers!
You have to calibrate you amplifiers output power, so that at the highest possible sound level the
tweeters peak power
never exceed 10 Watts
! Make sure of this before connecting the tweeters to
the amplifier. This important information is for active operation only!
Platinum Line Capabilities
Rainbow Platinum Line loudspeakers are high-quality car audio systems that can be used with any commercial
amplifier. For optimal sound reproduction in the vehicle we recommend the use of a linear amplifier with at least
50 Watt (RMS) of power. The excellent efficiency of the loudspeakers makes possible an enormous dynamic
range, which is fully appreciable even at the lowest performance levels.
Auto-specific tuning and the usage of select parts in the crossovers are characteristics that define our Platinum
Line. Thermal protection, level adjustment within the high tone and bass tone range as well as changing filter
slopes are just as standard as the fundamental 24 dB coupling of the individual loudspeakers.
Positioning the Loudspeaker
Rainbow loudspeakers may be installed in your vehicle in a variety of places. In determining the installation
location the following information should be considered:
•
The position of the speakers has a decisive impact on both the sound reproduction and the sound impression.
Moreover, you have to decide whether you want to install a full-range system without subwoofers or if you
prefer a satellite system with a subwoofer as the front main system.
•
The Platinum system may be installed in one of the three ways:
o
the full-range system with defined volumes
o
the satellite system with defined volumes
o
the standard installation for undefined door volumes
•
The Platinum system should not be installed in the rear of the car with the trunk/boot serving as a resonance
body if the required volumes are exceeded.
Full-range system
The full-range system needs a closed minimum volume. The Thiele-Small-Parameter Qts should be around 0.4-
0.55 in this volume. The needed volume equals about 15 to 30 litres.
Operation with high-pass / subsonic filter with a cut-off frequency of 30 Hz @ 12 dB/Oct. (better 24 dB/Oct.) only.
This increases the power handling and lifespan of the amplifiers and the mid basses!
Satellite system
The satellite system requires a closed volume that meets the optimum of the quality coefficient of the Thiele-Small-
Parameter, which is Qts 0.707. The required volume is 6-8 litres.
The corresponding resonance frequency is about 80 Hz. Consequently, this system is defined as a satellite system
and has to be cut off through a high-pass with a cut-off frequency of 80 Hz and at least 12 dB/Octave.
A
subwoofer is essential!