JBL CONTROL328C 8" Ceiling Speaker

Manufacturer: JBL ProSku: CONTROL328C
Special order only. Please contact us for shipping times.
Price: NZ$1,170.00

Freight $10 per order to main centres.
+ extra $5 if Rural Delivery.

JBL CONTROL328C 8" Ceiling Speaker.
Control 328C and Control 328CT have been engineered from the ground up to deliver exceptional next-generation performance in a coaxial point source design ceiling loudspeaker. The combination of the low frequency cone and the shaped mounting baffle performs as a true 12 inch (300 mm) diameter waveguide for the high frequencies. A unique metal throat transitions seemlessly to the horn to eliminate high frequency beaming which is common among this category of speaker. The result is a coaxial speaker with wide, extremely consistent 120° coverage on a broadband basis.

Component features include a Kevlar reinforced low frequency cone for reliability, well-damped surround for smooth frequency response, high temperature voicecoil and a reduced distortion design through saturated-gap magnet geometry. The high frequency driver features a pure titanium diaphragm for high sensitivity and long life, with diamond surround for resonance control and FerroFluid™ for increased power handling.

The Control 328C and Control 328CT are easy to install. The removable multi-pin locking connector, with secure screw-down terminals, allows for pre-wiring the input wires for easy clip-on convenience during installation.

The clean, contemporary look of the optional MTC-300RG8 round grille is designed to suit high-end venues, offering a simple, elegant appearance that fits into a wide variety of décors.

The optional MTC-300BB8 one cubic foot backcan is made of extra-thick 16 gauge steel and the top is lined with ½” medium density fiberboard.

The transformer version Control 328CT comes with a pre-attached top quality, low saturation 60 Watt multi-tap transformer for 70V/100V distributed speaker lines.

To ensure long life and reliability, Control 328C/CT passes JBL’s 100-hour torture power test, the toughest standard in the industry.


  • Consistent 120° broadband pattern control covers an extremely large area.
  • Shaped mounting baffle provides the pattern control of a 300 mm (12 in) horn from a 200 mm (8 in) driver.
  • Components:
    200 mm (8 in) woofer with Kevlarreinforced cone and 50 mm (2 in) voice-coil.
    25 mm (1" exit) compression driver.
  • Extraordinary clarity for speech and vocals with extended frequency response for music.
  • 250 Watt power handling with very high sensitivity provides high SPL capability.
  • Advanced high-slope crossover network for constant coverage and smooth, natural midrange.
  • Clean, contemporary grille and optional backbox available.
  • System:
  • Frequency Range (-10 dB): 45 Hz – 18 kHz
  • Frequency Response (±3 dB): 60 Hz – 16 kHz
  • Coverage Pattern: 120° conical, broadband
  • Directivity Factor (Q): 7.0 (Avg 1k - 16kHz)
  • Directivity Index (DI): 8.5dB (Avg 1k - 16kHz)
  • Long-Term System Power Rating, IEC:
    250 W (1000 W peak), 2 hrs
    150 W (600 W peak), 100 hrs
  • Sensitivity (2.83V@ 1m):
    93 dB measured half-space
    98 dB computed for competitive comparison
  • Maximum SPL: 118 dB cont ave (124 dB peak)
  • Crossover Network: 1.9 kHz, 3rd order (18 dB/oct) high-pass plus conjugate to HF, 2nd order low-pass to LF.
  • Nominal Impedance (328C): 8 ohms
  • Transformer Taps(328CT):
    70V: 60W, 30W, 15W, & 7.5W
    100V: 60W, 30W & 15W
  • Transducers:
  • Low Frequency Driver: Kevlar reinforced cone, 50 mm (2 in) voice coil.
  • High Frequency Driver: JBL 2412H-1 compression driver, 25 mm (1 in) voice coil.
  • Physical:
  • Input Connector (328C): Removable locking connector with screw-down terminals. Max wire 12 AWG (2.5 mm2)
  • 328C: 1) + in, 2) + loop out, 3) – loop out, 4) – in
  • Tap Connection (328CT): 328CT:
    A) Common
    B) 7.5W@70V, 15W@100V
    C) 15W@70V, 30W@100V
    D) 30W@70V, 60W@100V
    E) 60W@70V, n/c@100V
  • Safety Agency Rating:
    In accordance with IEC60849 / EN60849.
    Transformer in CT model UL Listed per UL1876.
  • Baffle: Metal, round, 305 mm (12.0 in) diamter, driver premounted to baffle, ported.
  • Baffle Attachment to MTC-300BB8 Backbox: Attach via 4 #10 x .75 in (19 mm) sheet metal screws.
  • Grille Attachment to Baffle: 4 pcs 4 mm machine screws.
  • Dimensions (H x W x D): 305 mm (12.0 in) diameter round baffle x depth from back of baffle of 160 mm (6.3in) on 328C & 218 mm (8.6 in) on 328CT.
  • Net Weight: 328C: 4.5 kg (10.0 lbs) 328CT: 5.4 kg (12.0 lbs)
  • Shipping Weight: 328C: 5.8 kg (12.7 lbs) 328CT: 6.7 kg (14.7 lbs)
  • Included Accessories: Ported baffle pre-attached, plus transformer on 328CT.
  • Optional Accessories:
    MTC-300RG8 Grille, round contoured, white.
    MTC-300BB8 Backbox, 25 liters (1 cubic feet)
    MTC-300T150 Transformer, 150 W for use with 328C.

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