QSC Audio CXD4.2, CXD4.5, CXD4.3 manual AC Power On, Power Distribution Charts

Connect the Loudspeakers

WARNING!: When the AC Power is on, there is a potential of having dangerous voltage at the output terminals on the rear of the amplifier. Use caution to not touch these contacts. Turn off the AC Mains disconnect switch prior to making any connections.

1. Turn the AC Mains power switch, on the back of the amplifier, to OFF.

2. Connect the loudspeaker wiring to the 8-pin Euro-style connector. Refer to Figure 15 thru Figure 23. When combining channels, QSC recommends that you connect jumpers between the electrically same output terminals. Refer to Figure 15 and the WARNING above the figure.

3. Install the Euro-style connector onto the rear of the amplifier as shown in Figure 24.

4. Use a Phillips screwdriver to secure the connector.

AC Power On — Figure 24 —

After connecting the outputs to the loudspeakers, you may turn the amplifier on.

1.	Make sure the output gain settings for all audio-source devices (CD Players, Mixers, Instruments, etc.) at the lowest output (max attenuation).
2.	Turn on all audio sources.
3.	Turn the AC Mains power switch on the back of the amplifier to ON. The amplifier starts in the state it was in when power was removed.
		EN
4.	You can now bring up the outputs of your audio sources.

Power Distribution Charts

The following charts show the maximum power output for each channel in each configuration, and under different loads.

				CXD 4.3 — Total Power:: 2500W
			8Ω Load					4Ω Load				2Ω Load
Configuration		A	B	C	D		A	B	C	D	A	B	C		D
4	CH (A B C D)	625	625	625	625		650	650	650	650	600	600	600		600
3	CH (AB C D)	1000		625	625		1200		650	650	1200		600		600
3	CH (A+B C D)	1250		625	625		1150		650	650	625		600		600
2	CH (AB CD)	1000		1000			1200		1200		1200			1200
2	CH (AB C+D)	1000		1250			1200		1150		1200			625
2	CH (A+B C+D)	1250		1250			1150		1150		625			625
2	CH Alt (ABC D)		1100		625			2000		650	2500				600
1	CH (ABCD)		1100					2100				2500
1	CH (AB+CD)		2500					2370				2230
						— Table 1 —
				CXD 4.5 — Total Power:: 5000W
			8Ω Load					4Ω Load				2Ω Load
Configuration		A	B	C	D		A	B	C	D	A	B	C		D
4	CH (A B C D)	1150	1150	1150	1150		1250	1250	1250	1250	625	625	625		625
3	CH (AB C D)	1200		1150	1150		2250		1250	1250	2100		625		625
3	CH (A+B C D)	2250		1150	1150		1150		1250	1250	625		625		625
2	CH (AB CD)	1200		1200			2250		2250		2100			2100
2	CH (AB C+D)	1200		2250			2250		1150		2100			625
2	CH (A+B C+D)	2250		2250			1150		1150		625			625
2	CH Alt (ABC D)		1150		1150			2400		1250	4100				625
1	CH (ABCD)		1150					2300				4200
1	CH (AB+CD)		4200					4250				2250
						— Table 2 —
						15										TD-000367-00-A