Celsus Noise Filter – 5A (NF100)

Description

Genuine Celsus · Part no. NF100

A Celsus 5A noise filter for the power feed to a radio, small amplifier, reversing camera or other in-car electronics. It sits in the supply wire and takes out the whine and buzz that alternators and ignition put on the line. Three wires: red is the input, black the earth and blue the filtered output.

Good to know

• What noise does it fix? Whine or buzz through the speakers that rises and falls with engine revs, or interference lines on a camera screen, when the cause is carried on the power supply.
• Is 5A enough for my amplifier? It suits a head unit, a camera or a small powered speaker; a larger amplifier draws far more than 5A, so check the device's fuse rating before you fit it.
• What should I check before fitting? A poor earth causes most engine whine, so first make sure every audio earth goes to clean bare metal; if the noise is still there, the filter is the next step.

Which one?

If you are running a second battery for a camper, the Celsus Split Charge Relay – 100A (RL100) is the part for the charge side.

Key features

• 5A noise filter
• Red input
• Black earth
• Blue output
• Cuts alternator whine

Specification