A customer came in asking for a full system upgrade on his truck speakers. We gave him the works installing a Kenwood car stereo model KDC-X598 due to the high voltage preouts, frequency control, and of course the bluetooth. We then installed 2 amplifiers that belonged to the customer along with his own JL Audio subwoofer 10W0V3-4. Last but not least a set of REF-6500CX 6.5 speakers to compliment the bass. We also added a CA1053 car alarm for good measure. It was a great addition to his car. Professional installation of these truck speakers done by the tech crew at Audio Express 5004 N. Oracle Road, Tucson, AZ 85704 (520) 888-7066 your car audio installation experts. We can recommend and install speakers that fits your needs and budget.