The Lotus Grand Tourers

Hi everybody... now that my car is running again I have turned my attention to the audio. My car has a Sparkomatic radio cassette fitted and the radio at least works... it scared me out of my skin when I first connected a battery! However id really like a manual for it and of coyrse i dongj have any such thing. Sparkomatic sounded like a wide boy replacement but having checked it seems they were/are? a respectable US manfctr... so does anyone have the manual and couls send me a scan or pics of the pages please?
If you wsnt to trust me I will be happy to copy and return.
Cheers
Mike

Sparkomatic is now Altec Lansing.

SR-309F is the model number and was also used on the Esprit.

Don't know if either of those will help, but it may widen the search a little.