Speaker SIM Impedance Simulator

This impedance simulator compensates for the disconnection of the original speakers when replacing them with Focal Inside speakers. Thanks to it, the installation of your new audio system is optimal and guaranteed error-free. It can be used with the IMPULSE 4.320 four-channel digital amplifier and, thanks to its ISO connectors, is easy to install.

Focal's Inside system upgrades include new aftermarket vehicle-specific speakers and subs, along with their Impulse 4.320 4-channel amp. Focal also offers a variety of cables and connectors that you'll need, including

• speaker wire harnesses for tweeters, subs, and center channel;
• T-harnesses that connect the vehicle and factory radio to the upgrade system;
• and extension cables to connect the T-harness to the amplifier.

In some installations, the factory radio shuts down if you remove the factory speakers. Focal's Inside SPK Sim impedance simulator connects to the input of a Focal Impulse 4.320 and makes sure the factory radio doesn't sense a lack of speakers then shut down displaying "Error."

What's in the box

• 4-Channel speaker impedance simulator