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JBL 3678-LF Low Frequency Section for 3678 Cinema System
JBL 3678-LF Low Frequency Section for 3678 Cinema System
JBL 3678-LF Low Frequency Section for 3678 Cinema System

JBL 3678-LF Low Frequency Section for 3678 Cinema System

Stock available, 5-7 day lead time
The JBL 3678 cinema loudspeaker system provides natural sound quality for music and dialog in small cinema applications. It can be used in either a passive mode, using its built-in network, or in a bi-amplified system. Enclosure design is extremely shallow in depth (292 mm; 11.5 inches), to minimize the space required behind the screen.
The high-frequency section consists of the JBL 2426 pure titanium compression driver and 2342 Bi-Radial horn. The titanium diaphragm of the 2426 ensures the natural sound and reliability mandatory in today’s motion picture theatres. The 2342 horn provides smooth, even coverage throughout the auditorium.
The low frequency section uses a single JBL 2226H driver. This 600 watt driver features JBL-patented Symmetrical Field Geometry (SFG) and Vented Gap Cooling™ technology for high power handling with minimal power compression.
The newly-designed passive crossover network is optimized to provide seamless transition between driver components, for clear, articulate dialog, and high fidelity music reproduction. Operation in a bi-amplified system is easily achieved by simple re-configuration of the jumper connectors at the network/connector panel.
  • Low Frequency Transducer: One 380 mm (15 in) low frequency driver
  • High Frequency Transducer: 25 mm (1 in) horn throat diameter, 44 mm (1.75 in) pure titanium diaphragm compression 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)

Information about us and your order

Norwich Cameras is a division of Neat Commerce Limited.

We are an online sales business based 5 miles south of Norwich in the UK and we have been established since 2017. As a family run business we have been operating photographic retail sales, photo processing and photography studios since 1995, however since moving to our online business you will need to make an appointment to collect your order directly from us.

Please note for UK shipments we ship with DPD and the lead time is 3-5 Working days from payment processing, or 5-7 days for Ireland and Europe.

Unfortunately due to cases of fraud we do not allow changes to your shipping address post payment unless you have paid via bank transfer.

If you have any further questions please feel free to get in touch and we will be happy to help you.