RCA WSP155 Main / Stereo Speaker "http wsp" Questions

wsp 150 to a computer? The manual explains it on page 4 of 7, step 3. http://www.retrevo.com/support/RCA-WSP150-Speakers-manual/id/476bh149/t/2/ Your PC's audio capabilities and controls are variables

...WSP 155 i CAN'T FIND MY MANUAL AND i Need to find out how to change my frequency. can you tell me where to find a manual free on line or how to solve this product you can find the manual here ...