i have a sammy juo machine, and I did the L-pad mod as was suggested with the 15watt ones from the parts express link.

I hooked up a mono one to the bottom speaker, and it worked great.

moved up to the top two speakers to do the same with a stereo l-pad.. wired it up, and nothing. no sound from the speakers. i checked with a multimeter to make sure the connections were right.

so i undid the wiring and rewired the two speakers back to the original wiring.... nothing :-( not even in BB mode when the music always plays

so the verdit - are my speakers fried? or is there some any alternative? i found out later these are piezo speakers, but will an l-pad really fry them?