I'm a novice trying to muddle my way thru the process of getting more sound outside around the new pool. I have a Denon AVR-1910 running the 5.1 inside plus 2 speakers over the pool table. I have another pair of eave speakers mounted outside and 4 newly installed TIC GS3 garden speakers spreading sound around the yard. They are 8 ohm and 200W max. My main issues are that I would like to have the ability to turn the bass down on the GS3 garden speakers and I'd also like to have them all playing a mono signal around the pool. So far the only thing people can agree on is that i don't have enough power. Some say i need an external amp, some say i need TWO! Some say i need an impedance matching speaker selector and again others say i need TWO (one for each amp). Some say I could just buy a newer receiver and that will cover all 6 outdoors speakers, but that sounds fishy. Some even say that i could stick with my current receiver and it would be fine to run all 13 SPEAKERS! Then somebody thru a major wrench in when they tossed out doing a 70v system like they use in commercial settings. The main point of me adding speakers outdoors was to bring a mellow level of music to that area without having dead spots when walking from point A to B, or hearing cymbals on one side of the pool and vocals on the other. Can anybody give me some clarity (please)?