\rHi Eric:
You would be surprised how good the LS-2 and LS3 small garden pendant speakers sound when they add a complementary 100-Watt 8-inch sub-woofer. The RX550 Rock speaker, AP520 and AP525 Patio Speaker, and the PS520 Patio Speakers also work well with the BOM4.1.2. Note The two internal Stereo 60 watts per channel digital Amplifiers will drive a 4-ohm load, so you drive two pair of any of the speakers listed above or 4 pairs total off the two internal Amps. You could even pick different types of speakers to run off each respective AMP. They would have to be the same two pair of a single amp but one amp could do two pair of RX-550 Rocks and the second internal amp could do a two pair of AP525. Another advantage to the Sub enclosure because it is a sealed sub-woofer system you can experiment with different locations before burying it two to six inches in the ground.
TL/5-29-2020