
The Fonestar PROX-120S is a versatile Public Address (PA) amplifier engineered to provide reliable, distributed audio for single-zone installations over long periods. It is ideal for commercial establishments, educational centers, and hospitality venues that require robust sound coverage with a low-impedance or 100 V line speaker system.
Key Features:
Output Power: 120 W RMS.
Single-Zone Output: Designed for single-area sound coverage, supporting both 100 V line (83 Ω) and 4 Ω low-impedance loudspeakers.
Microphone Inputs: Features 3 balanced mic/line inputs (CH 1 with Combo/Euroblock connector; CH 2 and 3 with Euroblock), all with selectable 48 V Phantom power. Inputs include mix, gain, and priority level control.
Priority System: Includes a robust input priority system for announcements:
Emergency Input 100V (highest priority).
Mute activated by general purpose NO/NC contacts.
Microphone Channel 1 (followed by Channels 2 & 3), with selectable VOX priority over Auxiliary Inputs.
Inputs/Outputs: Includes 2 AUX inputs (RCA/Euroblock) for music sources and a Line output (RCA).
Design & Cooling: Can be used on a desk or permanently installed in a 2 U 19” rack (rack mounts included). Cooling is managed by temperature-controlled forced ventilation.
| Feature | Specification |
| Power | 120 W RMS |
| Speaker Outputs | 100 V or 4 Ω (Single Zone) |
| Response | 40 - 20,000 Hz (-10 dB) |
| Distortion | THD+N: < 1% @ 1 kHz |
| Cooling | Temperature-controlled Forced Ventilation |
| Dimensions (W x H x D) | 433 x 89 x 360 mm depth (2 U 19” rack) |
| Weight | 9.5 kg |