Monitor Audio Platinum PLIC II

Meet the finest in-ceiling speaker in our arsenal; the PLIC II in-ceiling speaker. This exquisite piece of audio engineering meets the demands put on speaker manufacturers by providing a winning combination of high quality sound, ease of installation and discreet design.


The Monitor Audio PLIC II in-ceiling speaker features an 8" long throw bass driver with Rigid Diaphragm Technology (RDT II) cone technology to provide immensely powerful bass lines. This is achieved by the RDT cone reacting to an audio signal with lightning fast precision without deformation.  To provide the listener with a uniform frequency spectrum when the speaker is played at higher frequencies, additional dual mid-range drivers that feature C-CAM cone technology and Monitor Audio’s new Micro Pleated Diaphragm (MPD) transducer are mounted on a rigid aluminium baffle and directed towards the listening zone provide uniform mid and high frequency dispersion. 


All PLIC II drivers employ a heavy duty motor system, which deploys an under-hung motor assembly to ensure the coil always remains in the gap, even when driven hard. The addition of copper ‘shorting’ rings greatly improves magnetic linearity and lowers intermodulation distortion, resulting in crisp and clear audio delivery. A world first for an in-ceiling speaker!


Designed for installation in both new build and retrofit projects, the PLIC II in-ceiling speaker features Monitor Audio’s unique Tri-Grip fixing system. This 3-position 'dog leg' style fixing provides a greater contact surface area than other types. This system, combined with the magnetic grille, saves the installer both time and money by speeding up the speaker fitting process.

Monitor Audio Platinum PLIC II

  • System Format

    3 Way – 4 Driver

    Frequency Response (-6 dB)

    45 Hz – 60 kHz

    Sensitivity (1W@1M)

    90 dB

    Maximum SPL

    112 dBA

    Nominal Impedance

    4 ohms (3.1 ohms minimum @ 1.1 KHz)

    Power Handling (RMS)

    150 W

    Recommended Amplifier Requirements

    50-150 W

    Recommended Enclosure

    PLIC-BOX II or a bespoke sealed enclosure of 24 litres

    Mid / H.F Crossover Frequency

    5.3 KHz 3rd order (18 dB / Octave)

    Bass / Midrange Crossover Frequency (Hz)

    380 Hz 4th Order (24 dB / Octave)

    Drive Unit Complement

    1 x 8 inch long-throw RDT II bass driver
    2 x 2 inch C-CAM mid-range drivers
    1 x MPD high frequency transducer

    Adjustment Controls

    HF level switch (+1 dB / 0 dB / -1 dB)
    MF level switch (+1 dB / 0 dB / -1 dB)


    High-end ‘Push’ type terminals

    Fixing Type

    3 position Tri-Grip dog fixings

    Overall Diameter - Grille On/Off

    309 mm (12 3/16inches)
    296.25 mm (11 11/16inches)

    Overall Depth – Grille On/Off

    191.5 mm (7 1/2inches)
    188 mm (7 3/8inches)

    Construction Material

    Main chassis - Mineral Filled ABS (RoHS2 compliant)
    Baffle – Die cast Aluminium

    Grille Type

    Low profile trimless grille with magnetic fixings

    Cut-Out Hole Diameter

    273 mm (10 3/4")

    Mounting Depth

    185 mm (7 5/16")

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