its not really worth the money to mod that model...parts might cost more than the spekers set
regular power filter caps oledi rm15 each, you need 4 etc.
unless you really wanna have fun diy, i'll tell you that 5021 cannot go far because the original speakers for the sub and sats not as good sounding in the first place (plastic cone) un natural sounding

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Added on August 12, 2010, 4:27 pm
its not as easy as you think just join wire
on the other hand i too need a kind soul to open the atp5 and 4100 volume controller because i only have the subs

mod all the signal path caps 50v 2.2uf,1uf,10uf etc. first before power filter
try not to change the original value in the signal path

if you are a basshead and don't give a damn about sq, just change the the signal path caps leading to sub amp chip no need for powerfilter cap mod yet until your next months pocket money received =)

heh in that case... you can just change ONLY the caps in the signal path towards teh sub amp chip
stock 4558 good enough. no need to change opamp because you ditched your sats, you will not hear anything?
powerfilter? naw... you don't need it... the original will do.... go look at the price of the signal path caps first
if you want to change the paria 'maxcaps' or caps like that, forget it... duneed to mod lah =)

headphones?? roflt you gonna use the sub just for vibrator? hahahaha ok still your choise hahah hahaaa =DDDd

actually, if you are super noobs like me.
i will, open sub count how many caps of what value write on a paper....
then... i go check the price online first befoe i go thinking about modding
befcause if you m'sian, you will spend more than 50% of the modding time looking for parts than modding it