Polk Audio DB521 5.25-Inch Coaxial Speakers USER MANUAL
The Polk Audio DB521 5.25-Inch Coaxial Speakers user manual provides detailed information on installation, safe limits of operation, and technical assistance for the DB401, DB501, DB5251, DB651, DB651S, and DB6501 models. With a 3-position tweeter attenuation switch and wire loop, you can adjust the tonal balance to suit your car and system. Contact an authorized dealer or Polk Audio Customer Service for further assistance.