More information required.
How ''bad'' is the echo ? Is it echo or repeated ''beats'' ? What computer- lap top or desktop ?
Do the origional speakers have the same echo ? What sound/audio card ?
''Speakers Settings'' can be made at Control Panel>Sounds and Audio Devices- e.g. monitor mounted, taptop, desktop stereo speakers, surround sound speakers.... Your sound card audio device, e.g. Realtek AC'97, may have a sound adjustment for sound effects for different environments. There may be adjustments on the speaker system itself. If it is ''beat frequency'' echo, then try reversing the +ve and -ve terminals at the speakers or even the left/right speaker cables.
Ok so i just bought this new HP computer and I put some new speakers on, Altec Lansing. Pretty basic, two speakers and a woofer. For some reason i get this echo sound and I don't know why, has anybody ever had this problem? Is there a way to fix it? It's really quite annoying and i'd like to find out what it is. Any advice?