Description
Product Overview: VMA 1120
The VMA Series from JBL offers a budget-friendly range of mixer/amplifiers designed for both low (4Ω, 8Ω) and high impedance (70V, 100V) applications. Created for versatility and ease of use, these amplifiers are well-suited for commercial installations around the world, particularly in developing markets.
Key Features
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5 input channels with a single output, available in 60W, 120W, or 240W models
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Adjustable bass and treble for each output channel
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Supports 4Ω/8Ω, 70V, and 100V speaker systems
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Includes chime function and priority muting
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Compatible with JBL CSR-V remote volume controllers
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Balanced mic/line inputs and RCA stereo inputs (0.775V)
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Rack-mount kit provided
Technical Specifications
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Power Output (per channel):
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VMA160: 60W
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VMA1120: 120W
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VMA1240: 240W
(Measured into 4Ω/8Ω at 1kHz, ≤ 0.5% THD)
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Insertion Loss (70V/100V): Max 1dB
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Inputs/Outputs: 5 inputs, 1 output
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Tone Control:
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Bass: ±14dB @ 50Hz
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Treble: ±14dB @ 10kHz
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Input Sensitivity:
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Mic: 5.5mV RMS
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Line: 1.3V RMS
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RCA: 130mV RMS
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Frequency Response:
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4Ω/8Ω: 20Hz – 20kHz (±2dB)
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70V/100V: 80Hz – 15kHz (±3dB)
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Total Harmonic Distortion: <0.5% (20Hz–20kHz)
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Signal-to-Noise Ratio: >76dB (A-weighted)
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Input Impedance:
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Mic: 400Ω
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Line: 20kΩ (balanced)
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RCA: 50kΩ
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Phantom Power Supply: 27V DC
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Channel Isolation (Crosstalk): -70dB at 1kHz
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Power Supply Compatibility: 100V, 120V, 220V, 220–240V AC @ 50/60Hz
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Minimum Impedance Load:
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VMA160: 4Ω (low-Z), 80Ω (70V), 160Ω (100V)
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VMA1120: 4Ω, 40Ω, 80Ω
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VMA1240: 4Ω, 20Ω, 40Ω
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Environmental Conditions:
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Operating: 0°C to 35°C, ≤95% RH (non-condensing)
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Storage: -20°C to 85°C
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Weight:
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VMA160: 19.4 lb (8.8 kg)
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VMA1120: 20.2 lb (9.2 kg)
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VMA1240: 25.5 lb (11.6 kg)
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Dimensions:
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Width: 17.0 in (432 mm)
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Depth: 16.3 in (415 mm)
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Height: 3.5 in (88 mm)
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