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Appendix A: Preliminary Performance Specications
Performance VMA160 VMA1120 VMA1240 VMA260 VMA2120
Max Output Power per Channel
into 4 Ω or 8 Ω; 1kHz, ≤ 0.5% THD
60W 120W 240W 60W 120W
Insertion Loss
(70V & 100V outputs)
1 dB maximum
Number of Input Channels
5 5 5 8 8
Number of Output Channels
1 1 1 2 2
Tone Controls
(Bass and Treble non-detented
potentiometers on each channel)
Bass +/-14dB @ 50Hz
Treble +/-14dB @ 10kHz
Input Sensitivity
(to obtain full rated power into 8
Ω load)
Mic Input: 5.5mV
RMS
Line Input: 1.3V
RMS
RCA Input (stereo in): 130mV
RMS
Frequency Response
(measured at 2.83V
RMS
into rated
load impedance at any output)
4/8 Ω Output: 20Hz - 20kHz, +/-2dB
70V/100V Outputs: 80Hz - 15kHz +/-3dB
Total Harmonic Distortion (THD)
(measured at 2.83V
RMS
into rated
load impedance at any output)
Power Amp Output: <0.5%, 20Hz - 20kHz
Signal-to-Noise Ratio
(Ref. Rated Power, mixer levels
@ min., master volume @ max.
A-weighted)
>76dB
Input Impedance
(nominal)
Mic: 400 Ω
Line: 20 kΩ (balanced)
RCA: 50 kΩ
Phantom Power
27VDC
Crosstalk
(reference rated power, volume at
mid position, 1kHz)
-70 dB
Nominal AC Line Voltages
100V, 120V, 220V, 220-240V, 50/60 Hz
Minimum Load Impedance
Low Impedance Output
70V Output
100V Output
4 Ω
80 Ω
160 Ω
4 Ω
40 Ω
80 Ω
4 Ω
20 Ω
40 Ω
4 Ω
80 Ω
160 Ω
4 Ω
40 Ω
80 Ω
Operating Temperature/
Humidity
0°C to 35°C @ 95% R.H. (non-condensing)
Storage Temperature
-20°C to 85°C
Dimensions & Weight
Net Weight
19.4 lb
(8.8 kg)
20.2 lb
(9.2 kg)
25.5 lb
(11.6 kg)
25.5 lb
(11.6 kg)
29.3 lb
(13.3 kg)
Dimensions
Width: 17.0 in. (432 mm)
Depth: 16.3 in. (415 mm)
Height: 3.5 in. (88 mm)
Shipping Weight
24.6 lb
(11.2 kg)
25.5 lb
(11.6 kg)
30.8 lb
(14 kg)
30.8 lb
(14 kg)
34.5 lb
(15.7 kg)
Note: For AC power draw and thermal dissipation information, please visit our
website. www.jblcommercialproducts.com
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