The JBL TLX 4 is a bookshelf speaker that was released in 1999, featuring a compact design suitable for both music and home theater applications. It incorporates a 4-inch polycellulose woofer which contributes to its ability to deliver clear and accurate bass response. The speaker is paired with a 1-inch titanium dome tweeter that ensures crisp high frequencies. The TLX 4 cabinet is constructed from MDF to minimize resonance and is designed with a rear-firing port to enhance bass performance by allowing for improved airflow. The overall frequency response of the TLX 4 ranges from approximately 60 Hz to 20 kHz. It is rated at 8 ohms impedance and has a sensitivity of around 86 dB, allowing it to be easily driven by a variety of amplifiers and receivers. The speaker typically features a removable grille for an aesthetically pleasing look, fitting seamlessly into various room decors. Its size makes it versatile for use in smaller spaces or as part of a larger sound system, providing a balanced audio experience for listeners.