Harman JBL Commercial VMA Series User Manual (English)

Questions and Answers:

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Richard DayAug 11, 2025
What to do if there is no sound from my Harman JBL Commercial VMA?
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  Robert TorresAug 11, 2025
  If you're experiencing no sound or low sound with your Harman Amplifier, several factors could be the cause. First, ensure that the input signal is present and at an adequate level. Check if the Master Volume control is turned down and increase it. If a CSR-V is connected, verify its connection and volume level. Also, make sure the mixer channel inputs are properly adjusted. Another potential issue is a closed Priority switch, which mutes all except the priority input; open it if necessary. Finally, when using 70V or 100V outputs, confirm that the 70V/100V switch is turned ON.
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Jon MendozaAug 21, 2025
Why is the sound distorted on my Harman JBL Commercial VMA Amplifier?
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  Ethan RodriguezAug 21, 2025
  If you are experiencing distorted sound with your Harman Amplifier, it could be due to a few reasons. The input signal level might be too high, so try turning down the input level controls. Also, check if the Master Volume is set too high and reduce it. If you're using a line level source, ensure that the MIC/LINE switch is in the LINE position.
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Heather Thomas MDAug 31, 2025
How to fix a Harman Amplifier that has no power?
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  Bridget KnappSep 1, 2025
  If your Harman Amplifier mixer has no power and the power LED is not illuminated, the most likely cause is that the mixer-amplifier is not plugged into the power outlet. Ensure that the mixer-amplifier is properly plugged into the power outlet.

Harman JBL Commercial VMA Series Specifications

General

Amplifier Class	Class D
Protection	Short Circuit, Overload, Thermal
EQ	Bass and Treble Controls
Weight	8.4 lbs (3.8 kg)
Rack Spaces	1U
Output Power (VMA260)	60W @ 4/8 Ohms
Output Power (VMA2120)	120W @ 4/8 Ohms
Output Power (VMA160)	60W @ 4/8 Ohms
Output Power (VMA1120)	120W @ 4/8 Ohms
Frequency Response	20Hz - 20kHz
THD	<0.5%
Signal to Noise Ratio	>76dB
Signal-to-Noise Ratio	>76dB
Total Harmonic Distortion	<0.5%
Input Sensitivity	Mic: -32dBu, Line: +14dBu, RCA: 2dBu
Input Impedance	Mic: >20k Ohms Balanced Line: >10k Ohms Balanced RCA: >10k Ohms Unbalanced
Cooling	Convection
Operating Voltage	100-240V AC, 50/60Hz