JBL Professional JBL SRX812 Passive 12-inch two-way bass-reflex loudspeaker
The SRX812 is the passive 12-inch box in the SRX800 line - main PA, monitor, side or rear fill, depending on which way you set it down. A JBL 2272H woofer and 2432H compression driver cross at 1.9 kHz for 90 by 50 degree coverage, rated 800 W continuous into 8 ohms with 129 dB peak output. Twelve M10 points and moulded feet cover both flown and floor use.
Connection is NL4 in and NL4 loop-through with selectable +/-1 or +/-2 pins, so the cabinet can run passive or bi-amped. The enclosure is 18 mm DuraFlex-coated plywood in Obsidian with a 14-gauge powder-coated steel grille. It needs an external amplifier. Dual 36 mm pole sockets and a 50-degree monitor angle are built into the cabinet, which weighs 55 lb.
| Type | Passive 12-inch two-way bass-reflex loudspeaker |
|---|---|
| Nominal impedance | 8 ohms |
| System power rating | 800 W continuous / 1600 W program / 3200 W peak |
| Maximum SPL | 123 dB continuous, 129 dB peak |
| Sensitivity | 94 dB |
| Frequency range (-10 dB) | 41 Hz - 20 kHz |
| Frequency response (-3 dB) | 57 Hz - 20 kHz |
| Coverage pattern | 90 x 50 degrees |
| Transducers | JBL 2272H woofer; JBL 2432H compression driver |
| Crossover frequency | 1.9 kHz |
| Inputs | NL4 input and NL4 loop-through, +/-1 or +/-2 selectable; passive or bi-amp |
| Mounting | Dual 36 mm pole socket, 12 x M10 suspension points; 50-degree monitor angle |
| Dimensions (H x W x D) | 429 x 415 x 638 mm (16.87 x 16.31 x 25.11 in) |
| Net weight | 24.9 kg (55 lb) |









