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
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
In bi-amplified mode, the 3678 is THX-approved for THX certified theatres
no larger than 1,274 m3 (45,000 ft3) and screen-to-last row distances no
greater than 12.2 m (40 ft.).
Frequency Range: 30 Hz to 20 kHz (–10 dB)
Sensitivity, 98 dB
Power Capacity: 300 watts passive,50 (HF)/600 (LF) watts bi-amp
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
Frequency range (-10 dB): 30 Hz to 20 kHz
Frequency response (± 3 dB): 45 Hz to 12 kHz
Power capacity1 (passive): 300 W
Power capacity (bi-amp): HF: 50 W
LF: 600 W
Sensitivity: 98 dB
Nominal impedance: 8 ohms
Crossover Frequency: 1 kHz
Nominal coverage: 90° horizontal, 90° vertical
Half-space reference efficiency: 3.3%
Maximum acoustic power output
(sine wave input) 8 acoustic watts
System Polarity: Positive voltage to RED produces forward cone motion
Input connectors: Barrier strip screw terminals
Net system weight: 41 kg (90 lbs)
Shipping weight: 44 kg (98 lbs)
Dimensions (H x W x D): 406 (w/horn) x 651 x 292 mm
|Unità di misura
||In 5gg lav. data ord.
Consegna in In 5gg lav. data ord. significa che: dalla data dell’ordine, la merce arriverà a casa tua entro i giorni lavorativi indicati, queste tempistiche comprendono anche i giorni necessari per ricevere l’articolo dai nostri fornitori e i tempi di spedizione. Ricordiamo che le disponibilità sono indicative e sono subordinate all'effettiva disponibilità nei magazzini degli stessi.