1.hi, just as a new DIYer, I want my new porta pro to be improved in sound quality by adding series of 75 Ohm high quality resistors but facing several questions :
_ how many resistors should i add in ( using ipod touch and ipod video to play ) ?
_ how should i solder those resistors to both drivers ?
_ what method used to stop leaking sound from headphone as i feel so uncomfortable when playing at maximum volume during travelling ? ( am i right that adding a pair of big pads, Ex: HD414 pads, would does so )
2.otherwise, i hav another set of porta pro but left driver is not working, cant be certain about fault cable either left driver itself....how do i check that the driver is still working ,by not having a try like soldering new cable and test ?