What size speakers does the GTi have?
The front speakers, located behind the door panels are 165mm (6in) in diameter and have a depth of approx 55mm. They are made by the Goodmans Loudspeaker Company (made in UK or Hungary) and are rated at 20W. The rear speakers, located behind the side panels next to the rear seats, are 130mm (5in) in diameter and have a depth of 45mm. They are also made by the Goodmans Loudspeaker Company and have a rating of 20W. The tweeters, located behind small panels in the A pillar of the doors, are driven by wires from the front speakers, and have a simple resistor on them to filter out the low/mid frequencies.