6
You can operate each pair of channels in both stereo and mono (3 channel
or tri-mode) at the same time by using highpass filters (bass blockers) on
the higher frequency stereo channels, and a lowpass filter (coil) on the
subwoofers. The frequencies of the chosen highpass and lowpass filters
must not overlap (allow the mids and highs to play the same music as the
subs) or the impedance the amplifier sees at those frequencies will be cut in
half possibly causing the protection circuit to activate.
M i x e d M o n o O u t p u t
All multi-channel T UBE DR I V E R S are capable of being bridged into a 4-
Ohm mono output without switches or bridging modules.
You can achieve this mono channel by using the left positive (+) speaker
connection and the right negative (-) speaker connection. You can bridge
the front or rear channels in the same way. (Refer to the end panel drawing
on page 10.)
Note: Total bridged impedance of less than 4-ohms may trigger the
protection circuitry causing reduced output and may eventually
damage your amplifier.
B r i d g i n g
Sub
Sub
Tweeter
Tweeter
Tweeter
MidRange
MidRange
MidRange
Low pass
filter
L- L+
R+ R-
L- L+ R+ R-
Highpass
Filter
Bandpass
Filter
Highpass
Filter
Bandpass
Filter
Highpass
Filter
Bandpass
Filter
FRONT
REAR
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