2.1 to 4.1 surround sound ?

[TOXICAUDIO]

hi all of u i am new member to diyaudio, and new to electronics,
and sorry for bad English
i don't like loud and screechy noises from speakers
i have 2.1 home theater for cheap $30, and i surprised when the seller play the demo
its really good sound i ever hear, deep and smooth bass and tone like a honey,
music like a heaven, when i take it my home my and play a movie family and my friends also wonder its sounds like a DTS from 2 small speakers and 1 small sub-woofer,
from 3 years i don't have any complaint from this, and recently i get sub-woofer of and left and right working, i noticed the woofer get shorted,
i just replace the new woofer and i get remarkable marvelous sound again, and i urge to see whats inside the sub, and i open it i surprised again,
i seen inside 6x3ich pcb inside they use 3 TDA2030A HI-FI ic's
i searched on net abt tda2030a lots of good comments on this ic,
cheap and the the the best IC,
i love this TDA series IC's TDA2030a,TDA2040,TDA2050, they all are Hi-Fi.

some guys say if u properly build PCB with them and good power supply
u forget big monster hi power sound systems.,

now i come to thread, i want convert my 2.1 to 4.1 surround with using TDA series ICs for more pleasure of marvelous sound
can any body healp me plzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz

[planet10]

thread moved to a more appropriate forum