I just recently bought infinity kappa reference components and i was wondering if some one knew how to amplify those speakers to the stock headunit track 350z's come with. If anyone knows of any links with people who have done it previously, can you please inform me, or any ideas are appreciated, thank youl.

 

to AMPLIFY the sound, you need an AMPLIFIER. You can use the speaker leads out of the stock radio, just a Line-Level conerter to change those to RCA's, the run those into an amp (some amps have line level inputs) Then'll you'll have high CLEAN power to your kappa's.