Jerram, Alan "Choices - Winning Combination" Car Audio & Electronics March 1991: 61-63.
https://live.staticflickr.com/65535/...c97da39b_h.jpg
https://live.staticflickr.com/65535/...e1a6f6cc_h.jpg
https://live.staticflickr.com/65535/...f6331247_h.jpg