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5. CROSSOVER SETTINGS
5.1 SELECTING THE OPERATION MODE
The RODEK amplifiers feature an active crossover section with
full versatility and thus, offer different amplification modes, which
can be set by the operation mode slide switch(es). The operation
mode switch enables you to configure each stereo channel pair
to work in either in full range, high pass or even band pass mode.
Therefore – before you get started with the settings of crossover
frequencies and input gain adjustments – you must select the
appropriate operation mode for each channel pair, depending on
the speaker system that is connected and driven by the amplifier.
This will make sure that every speaker system is only working
in its proper frequency operation range, for which the speaker
was designed. For example select HIGHPASS, if the speaker is a
component- or coaxial type, or BANDPASS in case of a kickbass
or subwoofer system – and finally FULL(range) if the pass band
frequency of the stereo channel is already controlled by a head
unit with an integrated DSP based active crossover.
5.2 HIGHPASS FOR COMPONENT AND
COAXIAL SPEAKERS
Before you start your adjustments, all tone controls (i.e.
Bass, Treble), fader/balance and loudness featured on
the head unit, must be set to their respective neutral
or center position.
Please take a look at the chart below, featuring the recommended
highpass cross-over frequency settings for coaxial- and compo-
nent speaker systems – and adjust the high pass control of each
channel pair that drives satellites speaker systems accordingly.
The most important factor for the individual adjustment of the
high pass crossover frequency is the reproduction of mid-bass
frequencies and the resulting power-handling of the speaker
system. This setting is always a compromise. Try to find a high
pass crossover point, that will suit your personal listening pre-
ferences and – at the same time – also considers the physical
(cone excursion) capabilities of your speakers best.
Satellite speaker system, front door mounted, recommended
high pass frequency:
10 cm Coaxial- or Component System
90 – 120 Hz
13 cm Coaxial- or Component System
80 – 100 Hz
16 cm Coaxial- or Component System
60 – 90 Hz
Satellite speaker system, rear mounted, recommended
high pass frequency:
10 cm Coaxial- or Component System
100 – 150 Hz
13 cm Coaxial- or Component System
120 – 150 Hz
16 cm Coaxial- or Component System
130 – 150 Hz
NC-Amp 1-2-4-5-CH ME_pfade.indd 27
09.05.2009 11:25:33 Uhr
