2007 yaris amp tuning problem

That amp is a 2 channel amp correct? Well if the sub is a dual 4 ohm voice coil, then wiring the coils in parallel would give you a 2 ohm load, but if you bridge the amp the amp will "see" a 1 ohm load. The amp would then go in to protect mode at higher volumes.  Change the wiring at the sub to series and you'll be ok.

When he says there is a 2 amp fuse inline on the remote wire, thats what he means. His remote turn on wire for the amp is fused. Good for you, most people forget to fuse this.

Thanks, it is a mono block though so I don't know about that solution but it might make me put it in parallel anyways...

Also its on an inline converter.... no RCA's

Thanks for the replies!