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Bose 1800-VI User Manual

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5.0  Operation
5.4  Rear panel 
(see Figures 10 & 11)
5.4.1  Stereo/mono switch
Located on the motherboard of the input module, this switch selects between NORMAL
STEREO, DUAL MONO, or BRIDGED MONO operation.
For NORMAL STEREO operation, use CH 1 and CH 2 inputs. For DUAL MONO or BRIDGED
MONO operation, use CH 2 input only. See the section on bridged operation for more information.
5.4.2  Clipping eliminator switch
You can bypass the clipping eliminator circuit with this switch (located just to the right of
the input panel). Turning the switch OFF deactivates the clipping eliminator and allows the
amplifier to clip when driven beyond its maximum output capability. The clipping eliminator
is operational at the point of manufacture (switch in the up position). For more information
on how the clipping eliminator circuitry works, see Section 4.9.
5.4.3  Input connectors
There are two input connectors per channel which enable three different types of input
connectors to be used. A combination 1/4" TRS (Tip-Ring-Sleeve)/XLR input connector on
the input module allows for either a 1/4" TRS input or a XLR input. A quick connect terminal
block input is also on the input module and is wired in parallel with the TRS/XLR input
connector. This allows for easy connection of stripped wires to a connector which is
provided. Two parallel input connectors allow for simple connection of parallel amplifiers.
Note
When in mono mode, use CH 2 input only.
Figure 10
Rear panel of the 1800-VI
amplifier with the standard input
module installed.
Figure 11
Rear panel of the 1800-VI
amplifier with the ACM-1 module
installed.
FOR BRIDGED
OPERATIONS
CONSULT
MANUAL
LEVEL DEFEAT
ON
OFF
BOSE CORPORATION, FRAMINGHAM, MA 01701-9168 MADE IN U.S.A.
D.O.M.
1800 SERIES VI PROFESSIONAL AMPLIFIER
LICENSED UNDER U.S. PAT. NO. 4,484,150
SER.
NO.
RISK OF HAZARDOUS ENERGY! MAKE PROPER
SPEAKER CONNECTIONS. SEE OPERATING
MANUAL BEFORE USING.
WARNING
ENERGIE ELECTRIQUE DANGEREUSE.
ADVERTISEMENT
ON
OFF
CLIPPING
ELIMINATOR
TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK
DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE.
WARNING
AVIS
RISK OF ELECTRIC SHOCK
DO NOT OPEN
CAUTION
RISQUE DE CHOC ELECTRIQUE
NE PAS OUVRIR
BRIDGED
1400 W 8 
Ω
700 W 4 
Ω
700 W 4 
Ω
CH 2
CH 1
SPEAKER OUTPUTS
CLASS 1 WIRING SHALL BE USED
200-240 V     AC
50-60 Hz
1800 W
INPUT CH 2
INPUT CH 2
ACM-1
12 V DC
1.6 A
STATUS
LED
02
10
3
CH2
EQ. OUT
SERVICE
PIN
EQUALIZATION
ON
CH 1
CH 2
CH1
INPUT CH 1
A –NETWORK– B
INPUT CH 1
USE CHANNEL 1 FOR DUAL MONO
OR BRIDGED MONO OPERATION
3 4
1
2
1. 1/4" or TRS input
2. Quick connect input
3. EQ OUT connectors
INPUT IMPEDANCE 25K OHMS EACH LEG TO GROUND (TOTAL 50K OHMS BALANCED)
CH2
2
3
1
GND
CH1
CH2
CH1
SEND
RECEIVE
EQUALIZATION ON
EQ. OUT
SEQUENCE
INPUT CH2
INPUT CH1
1
2
PUSH
3
1
2
PUSH
3
FOR BRIDGED
OPERATIONS
CONSULT
MANUAL
LEVEL DEFEAT
ON
OFF
BOSE CORPORATION, FRAMINGHAM, MA 01701-9168 MADE IN U.S.A.
D.O.M.
1800 SERIES VI PROFESSIONAL AMPLIFIER
LICENSED UNDER U.S. PAT. NO. 4,484,150
SER.
NO.
RISK OF HAZARDOUS ENERGY! MAKE PROPER
SPEAKER CONNECTIONS. SEE OPERATING
MANUAL BEFORE USING.
WARNING
ENERGIE ELECTRIQUE DANGEREUSE.
ADVERTISEMENT
ON
OFF
CLIPPING
ELIMINATOR
TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK
DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE.
WARNING
AVIS
RISK OF ELECTRIC SHOCK
DO NOT OPEN
CAUTION
RISQUE DE CHOC ELECTRIQUE
NE PAS OUVRIR
BRIDGED
1400 W 8 
Ω
700 W 4 
Ω
700 W 4 
Ω
CH 2
CH 1
SPEAKER OUTPUTS
CLASS 1 WIRING SHALL BE USED
200-240 V     AC
50-60 Hz
1800 W
5
6
7
4. Equalizer LEDs
5. Level defeat switch
6. Sequencer connector
8
9
5
5 6 7
1. 1/4" or TRS input
2. Quick connect input
3. EQ OUT connector
4. Equalizer LEDs
5. Power pack coaxial plug
6. Module status LED
7. Service pin
 8. Network cable connectors
(in parallel)
 9. Speaker outputs
10. Power cord
9
10
3 4
1
2
7. Clipping eliminator switch
8. Speaker outputs
9. Power cord
8