The Ahuja SRX-120DXM two-way public address speaker system is engineered for direct electrical and acoustic interfacing with standard low-impedance public address amplifiers, commercial mixer amplifiers, and industrial sound reinforcement equipment. Understanding the electrical loading, connection types, and acoustic bandwidth ensures optimal system integration in commercial and outdoor installations.
Amplifier Matching and Electrical Loading
The SRX-120DXM features a nominal electrical impedance of 8 ohms (8Ω) and an input power handling rating of 100W RMS continuous power. For optimal performance without thermal overload or signal clipping, system designers should pair the unit with commercial PA amplifiers or booster amplifiers rated to deliver continuous output into an 8-ohm load.
When deploying multi-speaker networks, standard low-impedance connection topologies apply:
- Single Speaker Operation: Connects directly to an 8-ohm amplifier output terminal delivering 100W RMS continuous power.
- Parallel Pair Configuration: Two 8-ohm SRX-120DXM units wired in parallel present a combined 4-ohm nominal impedance load to the power amplifier, requiring an amplifier capable of handling a 4-ohm load with 200W RMS total power delivery (100W RMS per speaker).
- Series Pair Configuration: Two units connected in series yield a total nominal load of 16 ohms, suitable for specific high-impedance amplifier channels or distributed low-voltage lines without line matching transformers.
Input Connectivity and Cabling Interfacing
The speaker provides flexible dual-format input terminations to accommodate various field cabling standards:
- 1/4-Inch (6.35 mm) Phone Jack: Compatible with pre-terminated audio speaker patch cables and quick-disconnect connections from portable or rack-mounted PA equipment.
- Terminal Strip (Screw Terminals): Heavy-duty screw terminals designed for secure, permanent termination of standard industrial bare copper speaker wire or spade-lugged speaker conductors in fixed installations.
Acoustic Integration and Source Playback
Operating across a frequency response range of 55 Hz to 20,000 Hz with a sensitivity of 97 dB (1W/1m) and maximum rated SPL of 117 dB, the SRX-120DXM cleanly reproduces speech reinforcement, background music, and general announcements. The integrated acoustic topology—combining a 304.8 mm (12-inch) full-range dual cone low-frequency speaker with a 38.1 mm (1.5-inch) voice coil and a 2-inch by 5-inch piezo horn tweeter—operates as a complete two-way system without requiring external crossover hardware.
System Integration Specifications
| Parameter | Specification / Compatibility Value |
|---|---|
| Nominal Impedance | 8Ω |
| Input Power Rating | 100W RMS Continuous |
| Input Terminals | 1/4-inch Phone Jack + Screw Terminal Strip |
| Amplifier Compatibility | Low-impedance PA power amplifiers & mixer amplifiers (8Ω / 4Ω compatible) |
| Frequency Range | 55 Hz to 20,000 Hz |
| Sensitivity / Max SPL | 97 dB (1W/1m) / 117 dB Max SPL |
| Enclosure Topology | Sealed closed-box design (18mm board, carpet covered) |
