JBL 4861

The JBL 4861 is a screen channel loudspeaker system from JBL's Cinema Series. It's built for behind-the-screen mounting in smaller to medium-size theatres. It's a full-range, three-way design in a tuned ported enclosure. A single 380 mm (15 in) 2226H low-frequency driver is paired with two 25 mm (1 in) exit 2417H compression drivers on the 2342 Bi-Radial horn.

The crossover is external. The 4861 ships with a three-way external network that sets the crossover points at 300 Hz (LF) and 3.6 kHz (HF). Rated sensitivity is 95 dB (1 W @ 1 m) with a nominal impedance of 8 ohms. Continuous power handling is 150 W, with 300 W program. Frequency response is specified at 35 Hz - 20 kHz (± 3 dB), extending to 30 Hz - 25 kHz at ±10 dB.

Documentation on this model is thin. No production years, original price, dimensions, or weight have surfaced in the available record. The 4861 was aimed at the commercial cinema market rather than home hi-fi. It's a smaller-format alternative within JBL's screen channel lineup.

Type: Full-range, 3-way screen channel loudspeaker, ported enclosure
LF: JBL 2226H 380 mm (15 in) woofer
HF: Two JBL 2417H 25 mm (1 in) compression drivers on 2342 Bi-Radial horn
Crossover: External, 300 Hz / 3.6 kHz
Frequency response: 35 Hz – 20 kHz (± 3 dB)
Sensitivity: 95 dB (1 W @ 1 m)
Impedance: 8 ohms
Power: 150 W continuous / 300 W program