i have inherited a pair of Kirksaeter Monitor 120 speakers. I had them refoamed and i ready for hookup and now have a question. The terminals, unlike ordinary tap screws or connectors consist of 5 screws 3 phillips head screws and then 2 regular screws alternately inside the 3 phillips heads, plus they are not visibly marked plus or minus except for what appears to be minus symbols cut directly above each of the 3 phillips head screws which has totally confused me. BEFORE i hook them up wrongly and possibly damage them, can anyone tell me what the proper hookup is?...the person i got them from does not know anything about audio equipment. the speakers belonged to her late husband. I really would appreciate any help on the hookup...