Standard system
2 mid range speakers in the front doors, 2 mid range speakers in the shelf behind the back seat and one base speaker behind each front seat.
In total 6 speakers.
Amplifier: Main unit only, has 4 x 15 W (@4ohm), 98db from 63Hz, Freq range 50-14000Hz +/-3db

HiFi (676)
As above, but also 2 tweeters in the area at the side mirrors and 2 tweeters together with the mid range speakers in the shelf.
In total 10 speakers.
Amplifier: Main unit with the same wiring as above. Additional unit 2x40w (@2ohm) for the base speakers under the front seats. The unit is found behind the right side panel in the trunk compartment. 104db from 50Hz. Freq range 40-20000Hz +/-3db

HiFi Prologic 7 (677)
as HiFi, but also one centre mid range speaker in the center of the dashboard and one mid range speaker in each back door (to create a surround sound)
In total 13 speakers
Amplifier: One unit for the whole system; 7x40w for tweeters and mid range speakers (@2ohm) and 2x70W (@4ohm) to the base speakers under the front seats. 110db from 40Hz. Freq range 30-20000Hz +/-1,5db

Individual Audio “Dirac” (752)
as above, but now with a tweeter to the mid range speaker in the dashboard, and tweeters in the back doors, but mounted coaxially (separated)
In total 16 speakers
Amplifier: Amplifier with 9 channels with more power (825W) and the “dirac”-technology (active time compensation). 112 db. Freq 18-24000Hz +/- 3db