The JBL 4311 is a three-way, 4-driver loudspeaker designed for studio and home use, first introduced in the early 1970s. It features a solid, enclosed cabinet design that is both sturdy and acoustically efficient. The speakers are typically housed in a wooden finish that adds a classic aesthetic touch to any setup. The 4311 employs a 12-inch woofers for rich bass response, a 5-inch midrange driver that provides excellent vocal clarity, and a pair of 1-inch dome tweeters responsible for delivering high-frequency details. This configuration allows the speaker to cover a wide frequency range, producing sound that is balanced and dynamic.
The specifications for the JBL 4311 generally include a frequency response from approximately 40 Hz to 20 kHz, a nominal impedance of 8 ohms, and a sensitivity of around 90 dB. The speakers are capable of handling power levels of up to 75 watts RMS, making them suitable for various amplification sources. The design includes magnetic shielding to minimize interference with other electronic devices, making them versatile for both studio environments and home audio systems. With their ability to reproduce audio faithfully and accurately, they are popular among audio enthusiasts who appreciate vintage speaker designs.