LBB1938/20 Power amplifier, 1x480W

Technical Specifications
Electrical	Mains power supply
	Voltage	230 VAC, ±10%, 50/60 Hz
	Inrush current	19A
	Max power consumption	2200 VA
	Battery power supply
	Voltage	24 VDC +15% / -15%
	Current max	30A
	Performance
	Output power (rms/maximum)	480 W / 720 W
	Power reduction on backup power	-1 Db
	Frequency response	50 Hz to 20 kHz (+1/‑3 dB @ ‑10 dB ref. rated output)
	Distortion	<1% @ rated output power, 1 kHz
	S/N (flat at max volume)	>90 dB
	Line inputs	2 x
	Connector	3‑pin XLR, balanced
	Sensitivity	1 V
	Impedance	20 kohm
	CMRR	>25 dB (50 Hz to 20 kHz)
	Gain	40 dB
	100 V input
	Connector	Screw, unbalanced
	Sensitivity	100 V
	Impedance	330 kohm
	Line loop-through output	2 x
	Connector	3‑pin XLR
	Nominal level	1 V
	Impedance	Direct connection to line input
	Loudspeaker outputs	3 x
	Connector	Screw, floating
	Direct output	100 V, 70 V, 8 ohm
	Priority only (from input 1)	100 V or 70 V internally selectable
	Music (non-priority) only	100 V or 70 V internally selectable
Power consumption	Mains operation
	Max power	990 W
	-3dB	715 W
	-6dB	510 W
	Pilot tone*	110 W
	Idle	25 W
	24 VDC operation
	Max power	32 A (770 W)
	-3 dB	26 A (625 W)
	-6 dB	18 A (430 W)
	Pilot tone*	3.8 A (91 W)
	Idle	0.7 A (17 W)
Mechanical	Dimensions (H x W x D)	145 x 430 x 370 mm (19" wide, 3U high, with feet)
	Weight	Approx. 25 kg
	Mounting	Standalone, 19”rack
	Color	Charcoal
Environmental	Operating temperature	-10 ºC to +55 ºC (14 ºF to +131 ºF)
	Storage temperature	-40 ºC to +70 ºC (-40 ºF to +158 ºF)
	Relative humidity	<95%
	Acoustic noise level of fan	<48 dB SPL at 1 m (max output)

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