If you're experiencing issues with your RMA 220, here are some basic troubleshooting steps, adapted from common JBL diagnostic procedures.
Connect the positive (+) speaker terminal to the red binding post. jbl rma 220 user manual
Offers 11 steps of key adjustment, allowing singers to transpose music to their vocal range. 2. Front Panel Layout If you're experiencing issues with your RMA 220,
If using a video source, connect the video output of your karaoke player to the on the amp, and the VIDEO OUTPUT to your TV. 3. Operating the Front Panel The front panel of the JBL RMA-220 Go to product viewer dialog for this item. here are some basic troubleshooting steps
: Supports multiple sources with 4 audio inputs (DVD, Tape, Aux, BGM) and 4 video inputs.