JBL Professional CSA-1120Z - Commercial Amplifier 1 x 120 W with Integrated 70/100 V, 1U Fanless
The JBL Professional CSA-1120Z is a 120W, single-channel installation amplifier designed for commercial sound systems requiring reliability, efficiency, and direct compatibility with 70/100V distributed lines or low impedance (4/8 Ω) . Based on Crown DriveCore™ technology, it delivers high performance with low power consumption in a 1U half-width chassis ( 218.5 × 303.4 × 43.3 mm ) and fanless operation. It includes an integrated 70/100V output (with automatic 70Hz high-pass filter when Hi-Z is activated), Bass/Treble tone control , balanced Euroblock and RCA inputs with L+R→mono summing, and an RJ-45 port for CSR-V wall-mount volume control . Its universal 100–240 V~ power supply , disableable sleep mode and Energy Star® certification make it a robust and efficient solution for background music, announcements and paging.
Main features
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Power : 1 × 120 W into 4/8 Ω (1 kHz, ≤ 0.5% THD); 70/100 V integrated with insertion loss ≤ 1 dB.
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Hi-Z switching with automatic HPF 70 Hz when using 70/100 V.
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Inputs per channel: Balanced Euroblock (20 kΩ) and stereo RCA (50 kΩ) with L+R→mono summation .
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Controls : Bass ±10 dB @100 Hz and Treble ±10 dB @10 kHz ; volume potentiometer with illuminated ring (presence/clip).
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Remote : RJ-45 port for CSR-V panel (Cat 5).
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Design : 1U fanless (half width), DriveCore™ , Energy Star® , sleep mode can be disabled; rack kit included.
Product benefits
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One unit for everything : works at 4/8 Ω or 70/100 V without external transformers.
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Flexible installation : 1U half width with rack kit; professional and consumer inputs on the same channel.
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Intuitive operation : tone control and illuminated rings for quick status reading.
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Efficiency and reliability : DriveCore™ electronics, fanless and Energy Star® for continuous use with low consumption.
Use cases
- Retail, hospitality and catering: background music and announcements on 70/100 V networks.
- Education and corporate: classrooms, multipurpose rooms, corridors and receptions.
- Sports centers, museums and public buildings: reinforcement by zones with CSR-V wall control.
Frequently Asked Questions
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How do I select 70/100 V? Activate the Hi-Z switch and wire to the 70/100 V and COM terminals; the system automatically applies a 70 Hz HPF .
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Can I combine low impedance and 70/100 V on the same output? No. Each output must operate either at low impedance or high impedance.
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Does it support wall control? Yes, via CSR-V connected to the RJ-45 port with Cat 5 cable.
Project description
JBL CSA-1120Z Amplifier (1 channel): 120 W @ 4/8 Ω (1 kHz, ≤ 0.5% THD); built-in 70/100 V outputs ( Hi-Z , HPF 70 Hz , loss ≤ 1 dB); SNR > 100 dB (A, 22 kHz BW); THD < 0.5% (20 Hz–20 kHz at rated power); frequency response 20 Hz–20 kHz (±0.5 dB, 8 Ω); sensitivity 1.4 Vrms (8 Ω); Euroblock input impedance 20 kΩ (balanced) / RCA 50 kΩ; max. input level +22 dBu; crosstalk > 70 dB (1 kHz, Aw); Minimum loads 4 Ω (low Z) / 40 Ω (70 V) / 80 Ω (100 V); remote RJ-45 for CSR-V ; AC 100–240 V~ 50/60 Hz; dimensions 218.5 × 303.4 × 43.3 mm; net weight 3.1 kg (shipping 4.5 kg); 1U fanless , DriveCore™ , Energy Star® ; includes rack kit .
