Memphis Audio PRX602 Power Reference 6.5" 2 Way Coaxial Speakers (PRX602) W12S4 The driver achieves this extreme Color:Black & White The driver achieves this extreme level of shallow depth by compressing the architecture of the TW1 using a “concentric tube” structure that supports the oversized voice coil and the suspension attachments The GM DX971 comes with a variable Low Pass Filter (LPF) that allows you to adjust the audio frequency according to your subwoofer's characteristics and your personal listening preferences Powerful sound and Memphis Audio's Power Reference Series PRX602 6 1 2" 2 way car speakers are your allies in the quest to bring some fun back to your drive