This is a 1993 Toyota Corolla with a Pioneer system installed by Tony Powell.This is an on going project.The system has two amps a four channel GM-X924 driving Clarion 6.5" components in the front doors with 1" tweeters on the front windshield pillar.And 6.5" Pioneer components in the rear deck. Then there is a two channel GM-X622 bridged to mono driving the single 12" free air subwoofer mounted behind the rear seat.The head unit is a Pioneer KEH-P7850 cassette player that control's a CDX-P630 6-disc changer under the seat. Signal processing is done by a DEQ-6500 equalizer that control's the sub.Other components include a Tsunami 1 farad digital capacitor. A Guardian alarm system protects the Corolla.