(A+) (A-) (B+) (B-)
( + ) ( - )
BRIDGE
SPEAKER
1.4 Installation- Self-Bridging, 2+1 Mode
BRIDGED MONO-
Connect a 4Ω ohm speaker to the
terminals marked “(+), BRIDGE, (-)”,
making sure they match the polarity of
the connections at the speakers.
Caution!
⇒ Speaker or multiple speaker loads
totaling less than 4 ohms are not
recommended for “Bridged” or
“2+1 Mode”, and may damage the
amplifier.
T
3 4600, T3 4320-
Set the “MODE” switch to “2CH, 3CH”, or “4CH” and connect the
speakers accordingly. For “3CH” operation, bridge the “C” and “D”
channels.
2+1 MODE- (TRI-MODE)
Simultaneous stereo and mono operation, “2+1 Mode”, requires a passive
crossover to send low frequencies to the mono speaker and higher
frequencies to the stereo speakers. The following table lists the component
values for a 6 dB/Octave crossover at common frequencies using 4 ohm
speakers for stereo and an 8Ω speaker for mono(subwoofer):
FREQUENCY INDUCTOR CAPACITOR
80 Hz 16 mH 470 uF
100 Hz 7.5 mH 330 uF
120 Hz 7.5mH 330 uF
150 Hz 7.5 mH 220 uF
2+1 MODE WIRING DIAGRAM-
Use 100 Volt, non-polar capacitors, and connect them in series with the
stereo speakers as shown in the diagram. Connect the inductor in series with
(+)
(
-
)
+
-
(+)
(
-
)
TION USING 4 OHM SPEAKERS
A
M
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