We all know that cowon can put out some amazing players, but they all suffer from the same problem(at least the newer models), bass roll off.
this mod removes the small 220uf caps and replaces them with 470uf caps. my version adds some 25ohm resistors as well, feel free to experiment with your own combinations.
sorry for the blur pic but this was the only one i could find. credits anythingbutipod.com
the 220uf caps are the ones circled in white.
there is no place for the larger caps, so after removing them, we soldered thin wire extensions for the cap mod. thin wires will fit better because the caps are located under the screen. thicker wires will not allow the screen to snap close to the pcb board.
modifying the casing for the new caps
and finally the end product
FR curve generated from RMAA
Original before mod(credit dfkt) After mod. Typo on the entry, the purple curve should be the control unloaded one.
Edited by davtse - 11/25/12 at 11:40pm