Rear Panel; Stereo/Mono Switch; Clipping Eliminator Switch; Input Connectors - Bose 1800-VI Owner's Manual

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.
5 6
1800 SERIES VI PROFESSIONAL AMPLIFIER
FOR BRIDGED
OPERATIONS
SER.
CONSULT
NO.
MANUAL ON OFF
BOSE CORPORATION, FRAMINGHAM, MA 01701-9168 MADE IN U.S.A.
LEVEL DEFEAT
INPUT IMPEDANCE 25K OHMS EACH LEG TO GROUND (TOTAL 50K OHMS BALANCED)
SEND RECEIVE
PUSH
INPUT CH2 INPUT CH1
SEQUENCE
2 1
EQUALIZATION ON
CH1
3
2 1
3 CH2 CH2 CH1
EQ. OUT
3 4
2
1
1. 1/4" or TRS input
2. Quick connect input
3. EQ OUT connectors
5 6 7
8
1800 SERIES VI PROFESSIONAL AMPLIFIER
FOR BRIDGED
OPERATIONS
SER.
CONSULT
NO.
MANUAL ON OFF
BOSE CORPORATION, FRAMINGHAM, MA 01701-9168 MADE IN U.S.A.
LEVEL DEFEAT
A –NETWORK– B
USE CHANNEL 1 FOR DUAL MONO
ACM-1
OR BRIDGED MONO OPERATION
12 V DC STATUS
INPUT CH 2 1.6 A LED
SERVICE
PIN
EQUALIZATION
ON
INPUT CH 2 INPUT CH 1
CH 1
02 10
CH 2
3
CH2 EQ. OUT CH1
3 4
2
1
1. 1/4" or TRS input
2. Quick connect input
3. EQ OUT connector
16
7
WARNING ADVERTISEMENT
RISK OF HAZARDOUS ENERGY! MAKE PROPER ENERGIE ELECTRIQUE DANGEREUSE.
SPEAKER CONNECTIONS. SEE OPERATING
D.O.M.
MANUAL BEFORE USING.
LICENSED UNDER U.S. PAT. NO. 4,484,150
ON
CLIPPING
PUSH ELIMINATOR
CAUTION AVIS
OFF
RISK OF ELECTRIC SHOCK RISQUE DE CHOC ELECTRIQUE
DO NOT OPEN NE PAS OUVRIR
2 1
WARNING
TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK
3
DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE.
GND
4. Equalizer LEDs
5. Level defeat switch
6. Sequencer connector
5
WARNING ADVERTISEMENT
RISK OF HAZARDOUS ENERGY! MAKE PROPER ENERGIE ELECTRIQUE DANGEREUSE.
SPEAKER CONNECTIONS. SEE OPERATING
D.O.M.
MANUAL BEFORE USING.
LICENSED UNDER U.S. PAT. NO. 4,484,150
ON
INPUT CH 1 CLIPPING
ELIMINATOR
CAUTION AVIS
OFF
RISK OF ELECTRIC SHOCK RISQUE DE CHOC ELECTRIQUE
NE PAS OUVRIR
DO NOT OPEN
WARNING
TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK
DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE.
4. Equalizer LEDs
5. Power pack coaxial plug
6. Module status LED
7. Service pin
BRIDGED
1400 W 8
700 W 4 700 W 4
200-240 V AC
50-60 Hz
1800 W
CH 2 CH 1
SPEAKER OUTPUTS
CLASS 1 WIRING SHALL BE USED
9
8
7. Clipping eliminator switch
8. Speaker outputs
9. Power cord
BRIDGED
1400 W 8
700 W 4 700 W 4
200-240 V AC
50-60 Hz
1800 W
CH 2 CH 1
SPEAKER OUTPUTS
CLASS 1 WIRING SHALL BE USED
9 10
8. Network cable connectors
(in parallel)
9. Speaker outputs
10. Power cord
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.