Batboard

I tried doing a search, but too many key words were ignored, so idk if this has been discussed before or not, but it sounds familiar- that or it was one radio and two speakers, idk....

Either way, I have an Astro Spectra W9 and Astro Spectra Plus W7 and I want to put them both in the car, connected to the same speaker, which is a standard spectra mobile 10 watt speaker. Any advice on how to make it work without blowing 'em up or, or making the audio weak, or having two speakers?

-Josh