1998 LS400, Nakamichi

I'm adding 2 12's powered by a 500w monoblock.

First attempt: I tapped into the pre-amp signals for the FR speaker at the amplifier and plugged those into my monoblock... WORKED! The subs "popped" when they were turned on, so I decided against this route.

Second attempt: I tapped into the RL speaker and used a line output converter (LOC, Hi-Lo converter), then plugged those signals into my amp. Worked, except the volume was way too low, even with gain turned all the way up.

Third and final attempt: I tapped into the subwoofer signals (at the sub) and hooked up the LOC to that. Was loud enough and worked fine. I went for a drive and listened to a couple songs. When I openend the trunk the LOC was fried.

What's at fault here? The subwoofer signals or the LOC?

Thanks

 

i think the loc might of been faulty. i ran a loc on my subwoofer signal and that never happened to me. do you have pictures of how you wired it up. i used a stinger one if that helps you out.