We have 3indoor/outdoor speakers for deck-they are static

I would suggest moving them close to the base unit (if you havent already) to see if that improves the sound quality. If so, then you know you have some kind of interference in the area. Also, what output are you using from the BOSE? If you are using a headphone output or other variable output, you may be overloading the input circuit of the wireless base unit. Try turning down the volume on the BOSE or connecting to a different output.