Audio Systems: speaker replacement with resulting loss of sound, infinity speakers, monsoon stereo

Question
Hello,
 I hope you can help.  I have a 2002 Pontiac Firebird Trans Am with the 10 speaker Monsoon stereo system.  I am switching out all of the stock AC/Delco speakers with Infinity speakers.  I replaced the front door speakers with Indiniti companents with no problems.  The sail panel speakers and back hatch speakers I replaced tonight. The stock sail panel speaker is a Dual Voice and I replaced that with a 6.5" 2-way speaker and the back hatch which had a stock woofer and tweeter set-up was replaced with the 4x6 Infinity speaker. Since the Dual Voice speaker had two sets of wires coming off it I spliced wires into the woofer and tweeter wires in the back hatch area and connected them to the sail panel speaker.  Now, I don't get any sound at all from any speaker!!!  What did I do and how can I fix it?  Will appreciate any and all help you can give me.  

Thanks,

Answer
I am sorry to tell you but what a disaster
all the stock speakers are 2 ohms and 1.5 ohms  you replace it with 4ohms  if it did work  the sound will be horrible
you can only replace with 1,5 or 2 ohms speakers
there are also crossovers on the moonson amplifier you can not splice the signal from the woofer for a tweeter   

the best thing to do will be to unplug the battery and put all factory speakers back  also look for the radio lock code before you do this
and only use the same specs speakers