JBL 4851

Commentary

A modular high-output speaker system for the concert series.

The 4851 is a 4850 speaker family system, which is based on the 4850 with an additional tweeter.
There were four variations of the 4850 speaker family, 4850, 4851, 4852 and 4853, each with a different unit configuration.

Two 30 cm cone type woofer 2204H are installed in the low range.
A horn type unit using a horn 2380A and a driver 2445J is mounted in the middle range, and two horn type tweeters 2404H are mounted in the high range.

The enclosure uses high-density birch-laminated plywood with excellent strength. Surface treatment of glass-fiber-reinforced plastic ensures excellent durability. In addition, the side of the enclosure is cut into a 22.5 ° tapered shape, and by arranging multiple tubes in a fan-like shape, an extremely wide service area can be obtained.

Equipped with 8 embedded metal fittings for flying.

The Concert Series included a wide range of specialized options, including a carrying load case and various speaker mounting brackets.

Model Rating

Method	3-Way, 5-Speaker, Bass Reflex System, Floor Type
Units Used	For low band : 30 cm cone type (2204H) x2 For Middle Range : Horn Type (2445J + 2380A) For High Range : Horn Type (2404H) x2
Frequency characteristic	40 Hz to 21.5 kHz -10dB 50 Hz to 19 kHz ± 3 dB
Impedance	LF : 4 Ω HF : 16 Ω VHF : 16 Ω
Allowed Inputs (continuous)	LF:600W HF:150W VHF:80W
Maximum output sound pressure level (continuous)	130dB/m
Horizontal directivity	90 °
External dimensions	Width 620x Height 990x Depth 440 mm
Weight	65kg