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Video: easy setup on JBL EZ car amplifiers

Properly set the gain every time

Heads up!

Welcome to this article from the Crutchfield archives. Have fun reading it, but be aware that the information may be outdated and links may be broken.

One of the biggest problems with installing an amplifier is setting the gain properly. JBL has come up with a fool-proof method for getting it right in their EZ line of car amplifiers, ensuring full-power performance and distortion-free play. Using test tones on the included setup CD, you first set your receiver's volume to 75%, then adjust the gain knob until the yellow light or the red light goes off, and the green "Gain OK" light comes on — it's that simple.

Please share your thoughts below.

  • Buck Pomerantz from Crutchfield

    Posted on 9/5/2017

    Kevin, You can go online and download test tones from any number of sources, and store them on a thumb drive for your receiver to play. Start with a web search for 0 dB test tones.

  • Kevin

    Posted on 8/28/2017

    Receiver has no cd, how can I is the test tones?

  • Buck Pomerantz from Crutchfield

    Posted on 7/30/2015

    Tom, Try increasing your receiver's volume a bit to get a higher signal level to the amp.

  • Tom from Locarno

    Posted on 7/30/2015

    Ok, I recently bought a dayton ultimax 12" and put in a sealed custom wheel well box, I bought a jbl 1001ez amp for it and wired the sub @4ohm. So ipopped in the jbl cd and put my volume at 75% slowly started rasing the gain and it never left orange :( any tips or ideas what im doing wrong?