General

• Manufacturer: JBL
• Model: 4311
• Year of manufacture: 1972
• Made in: USA
• Color: Walnut veneer
• Dimensions (W/H/D): 362 x 597 x 298 mm
• Weight: 22 kg
• Original price approx.: 1'400 DM per piece

Technical data

• Type: 3-way, 3 speakers, bass reflex
• Chassis: Bass: 300 mm, Type 2213, Midrange: 125 mm, Type LE-25, Tweeter: 35 mm, Type LE 5-2
• Frequency range: 45 Hz - 15 kHz
• Minimum recommended amplifier power: 75 watts per channel
• Impedance: 8 Ohm
• Crossover frequencies: 1'500 Hz, 6'000 Hz
• System sensitivity: 91 dB SPL, 1 W, 1 m (3.3 m)

Special Features

• Level control for mid and high frequencies
• Detachable front

4311b_manual.pdf