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JX400/4D 9
ENGLISH
“LP (Low-Pass): Configures the filter to
attenuate frequencies above the selected filter
frequency at a rate of 12dB per octave. This is
useful for connection of subwoofer(s) to one
or both of the JX400/4Ds channel pairs in a
bi-amplified system.
2) “Filter Freq. (Hz) A simple rotary control
in each channel section adjusts the filter
cutoff frequency of the filter type you have
selected with the Filter Mode switch. This
control will have no effect if you have selected
the “Off position for the “Filter Mode”).
Each filter in the JX400/4D is fully variable
between 50 Hz and 200 Hz. The "80"
Hz position is a good starting point for
tuning systems utilizing typical subwoofers
and component or coaxial speakers.
PREOUTS
The JX400/4D incorporates a pass-through
preamp output (Preouts) section, so that
additional amplifiers can be easily added to
the system. This pass-through pre-amp output
delivers a summed stereo signal, combining the
Ch 1 and 3 signals into a Left Preamp Output
Signal and the Ch. 2 and 4 signals into a Right
Channel Preamp Output signal. Only signals
applied to the Low-Level inputs are passed
through the Preouts. Input signals applied to
the High-Level inputs will not pass through the
Preouts.
The preamp output signal is not affected by
any crossover filter selected (if the input signal is
full-range, the preamp output will be full-range).
Note: The signal level of the “Preouts is always
line-level (low voltage).
9


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