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JBL Professional JBL 306P MkII Powered two-way studio monitor, bi-amplified

The 306P MkII is the middle monitor in the 3 Series MkII line: a 6.5-inch woofer and a 1-inch soft-dome tweeter on 56 W of Class D power each, crossed at 1,425 Hz. Response is 47 Hz to 20 kHz within 3 dB with 110 dB peak output. The Image Control Waveguide is the reason these monitors sound the way they do off-axis: it is the same geometry JBL developed for the M2 master reference monitor, and it keeps the stereo image stable when you move out of the exact sweet spot. Coverage is 120 degrees horizontal by 90 degrees vertical.

Rear-panel controls include an HF trim of -2, 0 or +2 dB and a boundary EQ shelf at 50 Hz for -3, -1.5 or 0 dB, which is what you use when the monitor has to sit close to a wall. Inputs are balanced XLR and TRS. The cabinet is 15 mm MDF in matte black PVC with an injection-moulded ABS baffle. The extra half-inch of cone over the 305P shows up as a little more low end and headroom for the same desk footprint.

TypePowered two-way studio monitor, bi-amplified
Transducers165 mm (6.5-inch) woofer; 25 mm (1-inch) soft-dome tweeter
Amplifier power56 W LF + 56 W HF, Class D
Frequency response (+/-3 dB)47 Hz - 20 kHz
Frequency range (-10 dB)39 Hz - 24 kHz
Maximum peak SPL110 dB
Maximum continuous SPL92 dB
Crossover1425 Hz, 4th-order acoustic Linkwitz-Riley
Coverage angle120 x 90 degrees
Input connectors1 x XLR female, 1 x TRS female, balanced
ControlsHF trim -2 / 0 / +2 dB; boundary EQ shelf at 50 Hz -3 / -1.5 / 0 dB
Enclosure15 mm MDF, ported, matte black PVC
Dimensions (H x W x D)361 x 224 x 282 mm (14.2 x 8.8 x 11.1 in)
Net weight (each)6.1 kg (13.42 lb)
JBL 3 Series MkII Live Presentation at Winter NAMM 2018
Experience The JBL Professional 3 Series