QSC Audio manual Amplifier Current Draw-120 VAC, Idle Power

Amplifier Current Draw—120 VAC

Current draw is the amount of AC current an amplifier demands while it is operating. Measurements are provided for various loads at idle, 1/8 of average full power, 1/3 of average full power, and full power, with all channels driven simultaneously. The figures shown on this sheet are for 120 VAC usage; for 230- and 100-volt operation, see the companion sheets. For typical usage, use the idle and 1/8 power figures. Where an asterisk (*) appears, the data was not available at press time. The designations "na" and "nr" respectively mean "not applicable" to the particular amplifier model and "not rated" for the particular load impedance.

	Idle		1/8 Power
	Current draw at	Current draw at 1/8 of full power is measured with pink
		noise as a signal. It approximates operating with music or
	idle or with
		voice with light clipping and repesents the amplifier's
	very low signal
		typical "clean" maximum level, without audible clipping.
	level.
		Use these figures for typical maximum level operation.
		8Ω	4Ω	2Ω	25V-70V-100V
Model	Amperes	Amperes	Amperes	Amperes	Amperes
PL 218	0.8	4.9	7.7	11.9
PL 224	0.8	5	7.7	11.5
PL 230	0.9	5.9	9.2	13.2
PL 236	1	7.8	12.1	16.8
PL 3.4	0.9	6.4	10.8	16.5
PL 3.8X	*	*	*	*
PL 4.0	1	11	15.2	21.2
PL 6.0 II	2.5	10.3	15.5	23.8
PLX 1202	0.9	3.5	5.4	8.6
PLX 1602	0.9	5.1	8	11.9
PLX 2402	0.8	5	7.7	11.5
PLX 3002	0.9	5.9	9.2	13.2
PLX 3402	0.9	7.6	11.6	16.6
CX 302	0.9	3.5	5.4	8.6
CX 502	0.9	5.1	8	11.9
CX 702	0.8	5	7.7	11.5
CX 902	0.9	5.9	9.2	13.2
CX 1102	0.9	7.6	11.6	16.6
CX 302V	1				5.6
CX 602V	0.9	8.7			8.7
CX 1202V	1	7.7	11.9		11.9
CX 254	0.7	5.8	9.2	14.3
CX 404	0.7	8.1	12.4	nr
CX 204V	0.8	na	na	na	8.3
CX 168	0.6	6.4	10	nr
CX 108V	0.6	na	na	na	6.4
ISA 280	0.3	2.6	4.1	6.2
ISA 450	0.4	3.5	5.9	9.1
ISA 750	0.5	4.5	7	10.3
ISA 1350	1.2	6.4	10.1	14.5
ISA 300T	0.3	2.6	4.1	6.2	5.5
ISA 500T	0.4	3.5	5.9	9.1	6.9
ISA 800T	0.5	4.5	7	10.3	8.5
DCA 1222	0.9	3.5	5.4	8.6
DCA 1622	0.9	5.1	8	11.9
DCA 2422	0.8	5	7.7	11.5
DCA 3022	0.9	5.9	9.2	13.2
DCA 3422	0.9	7.6	11.6	16.6
DCA 1824	0.7	5.8	9.2	14.3
DCA 1644	0.7	8.1	12.4	nr
RMX 850	0.4	2.8	4.4	6.3
RMX 1450	0.4	3.7	6	9.3
RMX 1850HD	1.1	3.9	6.1	8.7

1/3 Power

Current draw at 1/3 of full power is measured with pink noise as a signal. It approximates operating with music or voice with very heavy clipping and a very compressed dynamic range.

8Ω	4Ω	2Ω	25V-70V-100V
Amperes	Amperes	Amperes	Amperes
7.3	11.6	18.4
8.3	13.2	19.8
10.5	16.8	24.6
13.7	21.4	30.2
11.5	20.5	32
*	*	*
18.8	30.3	40
19.3	35.1	47.4
5.1	8.7	12.9
7.6	12.1	18.2
8.3	13.2	19.8
10.5	16.8	24.6
13.1	20.3	30.4
5.1	8.7	12.9
7.6	12.1	18.2
8.3	13.2	19.8
10.5	16.8	24.6
13.1	20.3	30.4	8
13			13
12.5	19.2		19.2
8.8	14.2	21.7
12.2	19.3	nr
na	na	na	12.7
9.9	15.1	nr
na	na	na	10.2
3.8	6.2	9.7
5.4	9	14
8.3	13.3	20.5
12.5	20.1	30.6
3.8	6.2	9.7	8.4
5.4	9	14	12.7
8.3	13.3	20.5	16.5
5.1	8.7	12.9
7.6	12.1	18.2
8.3	13.2	19.8
10.5	16.8	24.6
13.1	20.3	30.4
8.8	14.2	21.7
12.2	19.3	nr
4.1	6.6	9.2
5.4	9.6	14.7
6.9	11.2	16.6

Full Power

Current draw at full power is measured with a 1 kHz sine wave. However, it does not represent any real-world operating condition.

8Ω	4Ω	2Ω	25V-70V-100V
Amperes	Amperes	Amperes	Amperes
12.1	20.5	33
15.9	26.7	41.1
20.4	34.3	52.3
25.8	42.4	60
24.9	42	69.1
*	*	*
35.8	57.6	83.2
39.3	67.5	104.7
8.4	13.9	22.2
12.6	21.2	32.2
15.9	26.7	41.1
20.4	34.3	52.3
25.1	40.6	58.6
8.4	13.9	22.2
12.6	21.2	32.2
15.9	26.7	41.05
20.4	34.3	52.3
25.1	40.6	58.6	12
20.5			20.5
25.2	38.7		38.7
14.8	24	38.2
21.7	33.4	nr
na	na	na	20.1
16.6	26	nr
na	na	na	15.6
6.7	11	16.5
9.7	16.2	25.4
16.1	26.5	40.7
25.5	42.2	65.7
6.7	11	16.5	12.9
9.7	16.2	25.4	19.1
16.1	26.5	40.7	31.7
8.4	13.9	22.2
12.6	21.2	32.2
15.9	26.7	41.1
20.4	34.3	52.3
25.1	40.6	58.6
14.8	24	38.2
21.7	33.4	nr
7.1	11.3	16.5
9.7	16	24.9
12.6	20.7	32