JBL 308P MkII｜8-inch Active Studio Monitor Speaker
The JBL 308P MkII is a 3 Series MkII 8-inch active nearfield monitor that combines the Image Control Waveguide with dual Class‑D amplification to deliver precise imaging, a wide sweet spot, and deep low end—meeting the professional reference needs for arranging, mixing, and content creation.
Key Product Features
- JBL Image Control Waveguide provides precise stereo imaging and a wide sweet spot
- 8-inch woofer and 1-inch soft-dome tweeter, dual Class‑D amplifiers with a total power of 112 W
- Front-mounted Slip Stream bass port for deep extension, fast response, and low distortion in the low end
- Wide frequency response with clear detail reproduction, suitable for arranging, mixing, and post-production reference
- HF Trim (-2/0/+2 dB) and Boundary EQ (0/-1.5/-3 dB) for quick room compensation
- Balanced XLR and 1/4" TRS dual inputs reduce interference and are compatible with various audio interfaces
- -10 dBV / +4 dBu input level switch to match consumer and professional gear
- Auto-standby power-saving design and reliable protection circuitry for safer long-term operation
- Rigid MDF cabinet and vibration-damping construction maintain clean mid-bass and accurate dynamics
Specifications
| Brand | JBL Professional |
| Model | 308P MkII |
| Type | Active dual‑amplifier nearfield monitor |
| Amplifier Type | Class‑D (LF 56 W + HF 56 W, total 112 W) |
| Woofer | 8 in (203 mm) |
| Tweeter | 1 in (25 mm) soft-dome tweeter (neodymium magnet) |
| Waveguide | JBL Image Control Waveguide |
| Frequency Response (±3 dB) | 45 Hz – 20 kHz |
| Frequency Range (-10 dB) | 37 Hz – 24 kHz |
| Maximum SPL | 112 dB SPL (peak) |
| Crossover Frequency | Approx. 1.8 kHz |
| Inputs | Balanced XLR ×1, Balanced 1/4" TRS ×1 |
| Input Level | -10 dBV / +4 dBu switchable |
| Panel Controls | Volume, HF Trim (-2/0/+2 dB), Boundary EQ (0/-1.5/-3 dB) |
| Cabinet/Port | Front-mounted Slip Stream bass port, vibration-damping MDF cabinet |
| Power | 100–240 V AC, 50/60 Hz, auto standby |
| Dimensions (H × W × D) | Approx. 419 × 254 × 308 mm |
| Weight | Approx. 8.1 kg |
| Package Contents | Monitor speaker ×1, Power cord ×1, Quick start guide |
