Spectrum
™
Specifications
`
20
Spectrum™ (IMA-840)
Amplifier Output Power
100 W RMS, 4 x 25 W channels
Receiver Input
Infrared FM, 2 wireless mic channels
Modulation
Wide-band FM
Reception Frequencies
Ch. A: 2.08 MHz | Ch. B: 2.54 MHz
Deviation
10 kHz Nominal, 25 kHz Maximum
De-emphasis
50 µs
Tone Key
32.768 kHz
Infrared Wavelength
850 nm
External Sensor Input
2, RCA, powered ports
Connectivity Coverage
1,600 sq ft per sensor, up to 2 sensors supported
Total Harmonic Distortion
<1% @ 1 kHz
Frequency Response
20 Hz - 20 kHz, ± 3 dB
Line Level Inputs
4: 1 x dual RCA, 3 x 3.5 mm
Anti-Hum Balun
Present on 1 Aux input for computer
Wired Mic Input
1 aux input switchable to mic input
Line Outputs
Conferencing: 3.5 mm with gain control - front panel
Assistive Listening System: 3.5 mm with gain control - rear panel
Page Input
2-pin Phoenix; 4 V, 25 V or 70 V normal
Page Input Sensitivity
51 mV min
Security Alert
Contact Closure (COM, N/O, N/C)
Fire Alarm
Contact Closure by fire panel mutes audio
Output Impedance
Rated Load: 4
Ω
minimum impedance
Equalization
5-band, ±10 dB
S/N Ratio
65 dB
Speaker Connection
4-pin Phoenix Connectors
Charger Output
5 VDC, USB
Power Supply
19 VDC / 6.3 A CE, CSA and UL Listed
Dimensions
8 1/2” W x 1 3/4” H x 7 1/2” D
Weight
2 lb 6 oz
Power Supply (AC-36)
Type
Regulated Switching Power Supply,
CE, CSA and UL listed
Input Voltage
100-240 volts AV, 47-63 Hz
Output Voltage
19 VDC, 3.43 A
Power Output
65 watts max
