Calculate your electrical system's capacity to support your amplifiers
Use your alternator's rated output, not max output
Enter your amplifier's RMS power to see if your electrical can support it
For systems over 1000W, upgrade these cables to 1/0 or 4 AWG:
Continuous reflects steady-state output from your alternator(s)—the ceiling for sustained RMS draw.
Burst factors in battery discharge during transient peaks. Lithium chemistries dump current far faster than lead-acid, so burst numbers climb.
Headroom (20%) keeps voltage stable when the bass drops. Without it, lights dim and amps clip.