JBL Professional JBL JRX212 Passive 12-inch two-way stage monitor
The JRX212 is a passive twelve-inch wedge. The M112-8 woofer uses a 64 mm edgewound ribbon voice coil, which puts more copper in the gap than round wire and buys efficiency and power handling, and it meets a 2414H-C compression driver on a Progressive Transition waveguide at 2.1 kHz. Sensitivity is 98 dB and the box is rated 250 W continuous into 8 ohms.
Coverage is 90 by 50 degrees nominal with 128 dB maximum output. Connection is a Neutrik Speakon NL-4 and a parallel quarter-inch jack. The enclosure is MDF covered in black carpet. JBL recommends 250 W to 500 W of amplifier into 8 ohms; an external amplifier is required.
| Type | Passive 12-inch two-way stage monitor |
|---|---|
| Nominal impedance | 8 ohms |
| Power rating (continuous / peak) | 250 W / 1000 W |
| Recommended amplifier power | 250 W to 500 W into 8 ohms |
| Maximum SPL (1 m) | 128 dB |
| Sensitivity | 98 dB SPL (1 W / 1 m) |
| Frequency range (-10 dB) | 60 Hz - 20 kHz |
| Frequency response (+/-3 dB) | 80 Hz - 18 kHz |
| Nominal dispersion | 90 x 50 degrees |
| Transducers | JBL M112-8 woofer; JBL 2414H-C 1-inch exit compression driver |
| Crossover frequency | 2.1 kHz |
| Inputs | Neutrik Speakon NL-4 and parallel quarter-inch TS jack |
| Enclosure | MDF covered in black carpet |
| Dimensions (H x W x D) | 584 x 399 x 325 mm (23 x 15.7 x 12.8 in) |
| Net weight | 19.5 kg (43 lb) |









