Before doing that at a party, try it when you are nearby the rock speakers and can actually *listen* to them while you slowly turn up the volume. Normally this is not an issue, but outdoors you are more likely to be in a situation where you think, “that’s just too quiet” and crank it. So one additional caveat: Even though the Rockville amps are specified in “Peak” power and not RMS (3000 watts my *ss), it’s still possible for you to burn out your speakers. Sorry to follow up on my own post but it seemed like you might be a novice. (Sorry if it sounds confusing in words, but the basic idea is simple: split the left output and split the right output of the Sonos Connect so you’re sending the same signal to 2 amps.) Don’t forget to set the dials on the front of the Rockville amp you’re using with the subwoofer, as described in their manual. And finally, two sets of male-to-male RCA-plug stereo cables (like the single one you are already using with your Connect, except:), each between one jack on the two splitters and the input terminals (red/white) on each Rockville amp. Sonos Connect Line out RCA jacks Left & Right each go to an RCA Y-splitter, e.g. Subwoofer + and - to red & black output screw-terminals of Rockville amp #2. Using speaker wire, both rocks + to red output screw-terminal of Rockville amp #1 & both rocks - to black output screw-terminal of Rockville amp #1. I don’t draw pictures, so here it is in words: See the diagram in your OSD subwoofer manual, which shows 2 amps. Yes, another Rockville amp, just for the subwoofer. In that case, better to buy a new Amp with lots of features than to buy a new Port just to replace your “now-missing” Connect. But then what are you going to do with your extra zone player? The only reason to try the new Amp is if method (2) would be “using up” your old Connect, which was normally slated for use elsewhere. Yes, you could buy a new Sonos Amp instead and *maybe* 125 watts/channel (plus the Rockville to drive the sub) will be enough. The Connect Amp’s 55 watts/channel is not going to do much with moderately low-efficiency outdoor speakers, and unless it’s a walled garden, you’ll find that you need to radiate a *lot* of power, just to be heard over street noise and ambient party sounds. Personal opinion: Unless your garden is small, go straight to method (2). Besides, even OSD shows a separate amp to drive their subwoofer, and since they make their own landscape speakers, they *could* have added a switch to change the impedance with the combo. (The reason not to try to do 4 rock speakers and 1 sub with just one Rockville amp is that, even if you can drive 4 rock speakers off 2 channels because you get 4-ohm impedance with 2x8 ohms in parallel, when you parallel the subwoofer with that, you’re likely to be below the impedance that amp can handle, it’ll overheat and poof. Use the crossover setting on your second Rockville amp to restrict the output to low-frequency. Two methods: (1) Use the Connect Amp to drive the 4 main rock speakers, 2 each in parallel to its speaker terminals, and take its subwoofer RCA-connector output to the Rockville amp, solely to drive that buried subwoofer.īut if that isn’t enough volume from the main rocks, or the Connect Amp starts to distort or overheat when you turn it up enough to be heard, then: (2) Use the Connect instead, plus 2 pair of RCA Y-splitters to drive *two* Rockville amps, one for the main rock speakers and the other for the buried subwoofer.
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