Infinity Primus 503F 5.25" 2-Way Car Speakers 4-Channel Amplifiers The GBR600-2D uses digital amplification

The GBR600-2D uses digital amplification and is designed for efficient operation in compact mobile installations

which is useful when reusing factory grilles but should be considered for exposed custom installations

adjustable bass capability

signal wiring

The woofer's high-current fast-on terminals use double contacts on both positive and negative poles for connection flexibility

Infinity Primus 503F 5.25" 2-Way Car Speakers 4-Channel Amplifiers The GBR600-2D uses digital amplificationThe Infinity Primus 503F is a pair of 5. 25 inch, 2 way coaxial car speakers designed to replace worn or basic factory speakers. Their compact format is intended for vehicles with limited mounting space, helping make an audio refresh possible without adding a separate tweeter assembly. Each speaker combines a polypropylene woofer and a centrally mounted silk dome tweeter. With 40 watts RMS power handling per speaker and a 3 ohm nominal impedance, the