Question

I have the studio monitor speaker, presonus ceres c3.5bt. And I recently bought a subwoofer,polk audio psw10. 

When I gave a connection from Presonus subwoofer out (1/4 inch stereo) to Subwoofer in (RCA), I see less throw on the subwoofer paperdiaphragm, though there is little bit output with full volume on subwoofer. Instead I gave input from Iphone to subwoofer (3.5mm to RCA), it really rocks. 

Why it so? What is going wrong when I connect from presonus?

Thanks for your reply.

Nat

Answer 1

i have the same sub and the eris 4.5,there my guess is that you have a cutoff filter on your sub plug to only send frequencies below(80 hz is my guess) to the sub, when you plug the sub directly you get all the extra information between 80 and 150hz that the psw10 can render. to check this hypothesis just download a frequency generator on your smartphone and play a 100hz signal and you'll see if it goes through the ceres 3.5bt subwoofer plug.