I bought a pair of Gladen M 165 V2 speakers, with tweeters. I got the reduction also, for the OEM connector. But my question is,  whats that little circuit board that comes with it? What to do with it? Thanks 

40 minutes ago, bootup said:

whats that little circuit board

 

It's a 2-way crossover unit and its job is to split out low frequencies to the bass speaker (the larger one) and high frequencies to the tweeter, sharing mid-range signals between the two speakers to produce the best balanced output.

 

Normally the pair of signal wires from the audio amplifier go into the crossover and two pairs go out, one to the bass unit (woofer) and one to the treble unit (tweeter).

 

I haven't looked into the Octy speaker wiring so you'll need more specific information on that before starting to cut wires!