JBL 4638 Low Frequency System. The JBL 4638 low frequency system is designed for cinema use and general reinforcement where smooth power response and accurate reproduction are essential. The 4638 employs the latest in JBL low frequency transducer technology, offering exceptional performance benefits
Rated impedance |
4 ohms |
Minimum impedance |
3.5 ohms |
Axial sensitivity |
100 dB @ lW, 1 m |
AES |
800 watts |
Long Term Average per EIA RS-426A |
1000 watts |
Continuous Program |
1600 watts |
Half-space reference efficiency |
8% |
Maximum acoustical power output |
64 watts |
Power compression |
at -10 dB power (80 W): 0.6 dB |
Net system weight |
62.2 kg (137 lb. |