JBL Professional CSMA 180/1120 - 4-Input Commercial Mixer/Amplifier with 80/120 W, 70/100 V and 4/8 Ω (1U Fanless)
The JBL Professional CSMA 180/1120 series packs everything you need for reliable and easy-to-use sound reinforcement in a 1U form factor. Featuring four balanced mic/line inputs (Euroblock) and stereo RCA inputs , plus mono inputs on the line channels, these mixer-amps deliver 80W (CSMA 180) or 120W (CSMA 1120) into 4/8 Ω or 70/100V mains power without external transformers, thanks to Hi-Z switching with an automatic 70Hz high-pass filter . They include 27V phantom power for microphones, VOX ducking and contact priority on channel 1, an auxiliary line output for zone expansion, and an RJ-45 port for CSR-V wall-mounted volume control. Crown DriveCore™ technology maximizes efficiency and enables a quiet and durable fanless design .
Main features
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Power and formats : 1 power output with 80 W (CSMA 180) or 120 W (CSMA 1120) at 4/8 Ω; operation at 70/100 V with insertion loss ≤ 1 dB.
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4 inputs with balanced Euroblock connectors and RCA (mono summing) for music and microphone sources.
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Priority Channel 1 : Adjustable VOX ducking and touch mute for clear announcements over music.
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Hi-Z switch : activates the internal transformer for 70/100 V and automatically applies a 70 Hz HPF .
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Phantom power : 27V switchable on microphone inputs.
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Front controls : volume per channel, master and Bass/Treble (independent equalization of the output channel), with illuminated rings.
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Remote control : RJ-45 port for CSR-V wall panel (Cat 5).
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AUX line output for recording, reinforcement or additional zone.
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Format : Compact 1U fanless for maximum reliability and low noise in the cabinet.
Audio features
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Response : 20 Hz–20 kHz (±2 dB) at 4/8 Ω; 80 Hz–15 kHz (±2 dB) at 70/100 V; AUX output 20 Hz–20 kHz (±1 dB).
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THD : < 0.5% (power stage, 20 Hz–20 kHz); line output 0.05% typical.
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Signal-to-noise ratio : > 90 dB (A-weighted, ref. nominal power).
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Input sensitivities : Mic 3 mVrms ; Line 0.775 Vrms ; RCA 0.300 Vrms . Impedances: Mic 400 Ω ; Line 20 kΩ (bal.); RCA 50 kΩ .
Product benefits
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Real versatility : a single unit covers low impedance and 70/100 V lines, with warning prioritization and zone control.
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Intuitive operation : clear front panel and illuminated rings, ideal for non-technical personnel.
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Efficiency and reliability : DriveCore™ platform and fanless design for continuous use with low power consumption.
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Scalability : AUX output for adding stages/zones and CSR-V for local volume control.
Use cases
- Retail, hospitality and catering: background music with priority voice announcements.
- Education and corporate: classrooms, meeting rooms, hallways and reception areas.
- Fitness centers, museums and public spaces: local control by staff with CSR-V panel.
Frequently Asked Questions
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How do I activate 70/100 V? Switch the Hi-Z selector and connect to the 70 V/100 V and COM terminals; the system will automatically apply a 70 Hz HPF .
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Can I use condenser microphones? Yes, by enabling 27V phantom power for the microphone inputs.
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Does channel 1 attenuate the music when speaking? Yes, it features VOX ducking with adjustable threshold and contact priority .
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Can I adjust the volume from the wall? Yes, with the JBL CSR-V controller connected via RJ-45 (Cat 5).
Project description
JBL CSMA 180/1120 Mixer/Amplifier: 4 inputs (balanced Euroblock + RCA on line channels), 1 power output; CSMA 180 80 W and CSMA 1120 120 W at 4/8 Ω; 70/100 V operation ( Hi-Z switching, HPF 70 Hz , ≤ 1 dB insertion loss); frequency response 20 Hz–20 kHz (±2 dB) at 4/8 Ω / 80 Hz–15 kHz (±2 dB) at 70/100 V; THD < 0.5%; SNR > 90 dB (A); sensitivity Mic 3 mVrms / Line 0.775 Vrms / RCA 0.300 Vrms; Mic 400 Ω / Line 20 kΩ (balanced) / RCA 50 kΩ impedances; VOX on CH1, contact priority on CH1, phantom 27 V, line AUX output; power supply 100–240 V~ 50/60 Hz ; dimensions 43.3 × 218.5 × 303.4 mm (H × W × D); net weight 3.1 kg (CSMA 180) / 3.2 kg (CSMA 1120); 1U fanless design with DriveCore™ technology.
