Recent content by karthiksitian

Guys i have build a 5.1 channel amplifier using 2 stereo TDA2030 ICS AND 2 MONO TDA2030IC using a 12-0-12 3AMP transformer......thing is that does sub-woofer require a pre-amp circuit....i have connected this amp to creative x-fi sound blaster usb sound card.....the subwoofer is ok..but require...