Special System Configurations - Hafler JF2000 Owner's Manual

Speaker
Polarity Note

SPECIAL SYSTEM CONFIGURATIONS

Biamplification
Dual Monaural
(Mona)
What
Be sure to observe speaker polarity (+ and - leads) through-
out your system. Getting them wrong can result in missing
bass, massive distortion, or blown speakers!
'PLEASE NOTE:
each channel of the amplifier is
each channel of the amplifier uses half of the nominal load
impedance. Therefore, in bridged/mono mode the minimum
equired load impedance is 8 ohms.
If the speaker system in use is capable of having separate
inputs for the woofer and midrange or tweeters, or if the
system has a woofer in a separate box and satellite midrange
and tweeters, then the final sound from the system could be
improved by biamplifying. This means using two amplifers in
normal stereo mode, each being driven by a dedicated signal
high or low frequency - and loaded by a dedicated driver -
high or low frequency. This allows different power levels to
be applied to the high and low frequency drivers of a speaker
system. (Refer to Figure 2 for proper hook-up.)
Both channels are driven by the same signal. (In the JF-
! 2 000 , the common signal input is the Left channel input.) In
his mode, both amplifiers are controlled by the left input gain
control and put out exactly the same kind of signal and
power.
The minimum nominal load impedance for
4
Figure 2
4
ohms. In bridged mode,