Looking for recommendations for outdoor speakers

@davetheoilguy 

Sorry, I guess I need to be more specific. Where are the poles going? Out in the yard facing the listening area? Flanking the Patio? How close to your listening area? How much area are you wanting to cover?

Consider the on wall from Ambisonic. They can be pole mounted, made into a line array and they use a planar tweeter so they can cover quite an area with good sound. They sell a complete system so it's pretty simple plug n play. I've heard and sold their products and I think it'll fit the ticket for your install. 

https://ambisonicsystems.com/hd6-5-loudspeaker-modules/

@sunshdw 

The patio is slightly over 1000sf total long rectangle, residential, more or less equally divided between (1) a large in-ground hot tub (about 10X20), (2) a seating area in front of a large fireplace, and (3) a table for 10, with a grilling area along the wall.  Ceiling is approximately 20 feet or so high, with mounting around ~17-18 feet off the ground.  Three walls with hot tub on left and kitchen on right if you were standing facing the fireplace (with back to the open area).  Fireplace/seating in the middle.

The mounting pillars are to either side of the fireplace (so the speakers face the open area), roughly 15 feet apart, and facing the seating area, which would be the primary listening area.

My turn to be unclear.

The pillars are not "going" anywhere.  They exist now and hold up the roof. 

About six by six square metal poles, filed with concrete.

 I posted the below reply on another forum. I didn't buy a vineyard but I visited a tasting room for a release yesterday and they had the Model 6.5 installed outside as well as a subwoofer. They have been out in extreme elements for many years and sounded very good.

I had looked at Ambisonic Systems at one point but determined we didn't spend enough time playing music outside and these are much higher priced than most outdoor speakers. More in the commercial class. They look very nice though. I considered the landscape posts with speakers and a subwoofer hidden in the garden and pointing towards the house so the sound didn't carry over the lake and down the valley as much. Maybe when I buy a vineyard and have a release party. 

https://ambisonicsystems.com/loudspeakers-2/

https://ambisonicsystems.com/

@davetheoilguy 

That sounds like a really nice patio area! I think the Ambisonic speakers will do a really good job to cover that big of a space. Hopefully there's a dealer near you so they can come out to take a closer look and make their recommendation.