How to Convert 2.1 speakers to 5.1?

Answer 1

Your best bet is to run through an A/V receiver. They generally have methods to turn 2 channels into 5, but if that is not possible, connect the 2 channels and listen through whatever of the speakers you choose, but it will not be all of them :(

Answer 2

Dvd players are rarely 2.1. They are quad stereo at best. I used 2 pairs of 1/8 jack y's coming off a a y that went from the red and white RCA type to a male 1/8 head phone jack. So

From DVD 6' red/white to 1/8 headphone

from 6' y I used a single female to dual male 1/8 y

from the dual 1/8 I used two more of the same to get the 4 connections.

Answer 3

You can't.

5.1 means 5 speakers and a sub woofer;

2.1 means only 2 speakers and a sub woofer.