5.6 ADJUSTMENT OF PHASE SWITCH
The phase switch function of your RODEK amplifier can be
activated with the corresponding switch. The phase-shift con-
trol enables you to match the acoustical phase relations of
subwoofer and the speaker system playing in the front doors,
either a component or a coaxial system. The target is that both
speaker systems, normally separated by aprox. 3m of distance
are intended to play acoustically "in-phase" at the driver's
seat location. A good match of the acoustical phase between
subwoofer and the system in the front doors will give you the
impression of bass sounds coming from a place in front of you.
Or the other way round, the subwoofer playing in the trunk of
your car can not be localized that easily.
The second advantage is, that the upper bass region - i.e. where
the sound waves radiated by the subwoofer and the kickbass
or front door mounted component system is crossing over - will
sound considerably more precise and tight. This phase adjust-
ment can only be determined by ear, there is no rule of thumb
to find a good match, and you will definitely need somebody
to help you. To judge the effect of the phase-shift adjustment,
you must sit in the driver's seat, and somebody must adjust
the phase shift control switch until the sound reproduction in
the bass region is best. Furthermore, it might be necessary to
invert the (connection) polarity of your subwoofer - and re-adjust
the phase, if you can not find a proper match with the correct
in-phase polarity subwoofer connection.
CROSSOVER SETTINGS
