Would it be possible to connect the wires from the 5.25's to the 6x9's to get better sound?
I was wondering if i could connect the 5.25 speaker wires to the 6x9 wires to increase sound
No Problemo!! The wirres just carry the m/v for the sound. It does not care what speaker you hook to it.
In addition try to match impedance values on speakers as close as possible.
Your question is kind of confusing me. If you are asking about replacing your stock 5.25 with 6X9s sure it will work, but if you are asking if you can put the wire from your 5.25 PLUS the wire for your 6X9 then NOOOOO that will blow your head unit or amp. im sorry if i looked into the question to far but it was worded a little weird.
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