Hall Research AMP-4840 40W Audio Amplifier with RS-232 and IR Control

The AMP-4840 is a compact, economical and energy efficient (Class D) mono / stereo audio amplifier with 3 inputs (2 line in and 1 balanced mic). Versatile design is compatible with dynamic, condenser or wireless microphones with fully adjustable control options including RS-232, IR and front panel buttons. Functions include bridge connection, dual-mono, EQ control and microphone mixer. It is designed to drive one or two speakers, but is capable of driving 4 speakers in parallel mode as shown below. In the below configuration each 8 ohm speaker will be able to deliver up to 10 watts of power for a total of 40 watts. The AMP-4840 is a perfect for classrooms, meeting rooms, boardrooms, sports bars and more.

Hall Research AMP-4840 Specifications

Rated Output
2x 20W at 4 Ohms or 2x 10W at 8 Ohms or 1x 40W at 8 Ohms in bridge mode
Gain
32dB
Frequency Range
20 Hz to 20KHz
Signal/Noise Ratio
80 dB (at max output)
Total Harmonic Distortion
1% (1 KHz), 0.3% (20 KHz) – at nominal levels
Input Impedance
> 10 K Ohms
Output Impedance
3.5mm Loop Out: 50 Ohms
Speaker out: 4 Ohms – 8 Ohms – Amplified
Stereo Channel Separation
>75 dB from 20 Hz to 20 KHz
CMRR
>70 dB from 20 Hz to 20 KHz
Operating Temperature
0 to 40 deg. C (32 to 104 deg. F)
Operating Humidity
20 to 90% non-condensing
Power
Max Consumption: 40W
Idle Consumption: 4W
Power Supply
Input: 100 VAC to 240 VAC, 47-63 Hz
Output 24 VDC / 5A
Certifications
Unit: CE, FCC, RoHS
Power Supply: cULus
Dimensions (HxWxD)
1.5 x 3.78 x 3.43″ (3.81 x 9.60 x 8.71cm)
Weight
0.3kg (0.66 lbs)