J. P. Leisure Ltd. Unit 1, Hillside Road, Hele, Ilfracombe, Devon, EX34 9QS, United Kingdom.

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JBL 3678-LF Screen Channel System

JBL 3678-LF Screen Channel System

JBL 3678-LF Screen Channel System

Price Each 754.27 Exc VAT or (905.12 Inc VAT at 20%)


Ref: JP3247


JBL 3678

The JBL 3678 is a THX approved design and can be used in either the passive mode or in a bi-amplified system

JBL's patented Vented Gap Cooling keeps the 2226H low frequency working optimally while the JBL 2342 Bi-Radial horm and 2426 pure titanium compression driver ensures a smooth even coverage with natural sound and unsurpassed reliability.


  • Low Frequency Transducer: One 380 mm (15 in) low frequency driver
  • Flat power response 100 x 100 Bi-Radial horn.
  • Operable in bi-amp or passive mode. Includes adjustable bracket for horn aiming.
  • Shallow profile cabinet minimizes behind-screen space requirements.
  • THX - approved for THX system installations (biamplified only).


  • Frequency Range 30 Hz to 20 kHz (-10 dB)
  • Frequency Response 45 Hz to 12 kHz (+/- 3 dB)
  • Power Capacity (Continuous Pink Noise) 300 W Passive HF: 50 W Bi-Amp LF:600 W Bi-Amp
  • Sensitivity 98 dB (1W, 1m)
  • Nominal Impedance 8 Ohms
  • Crossover Frequency 1 kHz
  • Nominal Coverage 90 Horizontal, 90 Vertical
  • Half-Space Reference Efficiency 3.3%
  • Maximum Acoustic Power Output 8 Acoustic W (Sine Wave Input)
  • System Polarity Positive Voltage to RED produces forward cone motion
  • Input Connectors Barrier Strip Screw Terminals
  • Dimensions W/Horn (H x W x D) 1019mm x 651mm x 292 mm (40.125" x 25.625" x 11.5")
  • Net Weight 41 kg (90 lb)

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