I've a nomal speaker with one wire which has 2 inner thin wire, I want to conect it with my laptop. I have 3.5 jack in my laptop which is combo. How to supply power to that speaker it doesn't has separate power input, I'll need to supply power through same input wire. Secondly how can I connect that with my laptop through 3.5 mm combo jack. I know that I'll need to make my custom connector but how.