MTX ThunderLink Hi-Low 4 Channel Speaker Level to RCA Converter - TL-4.5L

The MTX ThunderLink TL-4.5L is a 4-Channel In / 5-Channel Out Line Output Converter designed to bridge modern factory audio systems with aftermarket amplifiers. With high-voltage speaker-level input handling, intelligent load options, and multiple turn-on modes, it delivers a strong, clean preamp signal while keeping factory systems happy and fully functional.

COMPACT, INSTALL-FRIENDLY DESIGN

Designed to fit where space is limited, the TL-4.5L features a compact chassis that makes mounting easy under seats, behind panels, or near factory amplifiers. Its small footprint gives installers more flexibility without sacrificing performance or control.

HIGH-VOLTAGE FACTORY SIGNAL HANDLING

Designed to accept various OEM speaker level outputs, The TL-4.5L can handle input signal up to 40V. Whether you have a base model or premium audio system, it will accept most signals to deliver a strong, distortion-free Preamp output to your aftermarket amplifiers.

SELECTABLE LOAD RESISTANCE

Selectable input impedance settings allow the TL-4.5L to properly interface with a wide range of factory radios and amplifiers. This helps ensure factory systems continue to operate normally when speakers are removed, preventing muting or shutdown issues. 

FLEXIBLE TURN-ON AND OUTPUT CONTROL

Multiple remote output and turn-on modes, including DC offset sensing, audio signal detection, and +12V remote turn-on, ensure reliable operation across different factory system designs. Individual gain controls, clip indicators, a dedicated bass channel output, and a remote level control provide precise system tuning.