I would greatly prefer to keep the sensitive electronics out of the weather. The OWA3 does not have an amp so it has to be in close proximity to the amplifier which drives the speakers. Without some enclosure against the elements the amp would be exposed. Running a weatherproof speaker wire to a set of outdoor speakers is all I had to do to make my outdoor system pretty protected from the elements. With a set of powered outdoor speakers and a 100 meter transmit range, the OWA3 gives you plenty of flexibility to use it for whatever you want.
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Music system
Model 990/7500/Magnepan 1.6 QRs/Technics SL1200 MK2/Aperion S-12 Subwoofer/OWA3/Sony NS75H DVD
APC H15 Power Conditioner
TV System
Large Advent Loudspeakers/ Polk center/Monoprice surrounds/Panasonic Viera 42 inch/Onkyo HT-RC260/Sony BDP S590/Directv
Home Theater System
Onkyo PR-SC886/Outlaw 7125 Klipsch RF-82 L/R,RC-62 center, RB-35 SR/SL, BENQ HT1075, Outlaw LFM1-EX/OPPO BDP-83/Directv
Harmony ONE
Blue Jeans and Monoprice interconnects
APC H15 Power Conditioner