This pair includes Bluetooth support, and it offers a volume control, a headphone jack, and an auxiliary input jack on the front, plus quarter-inch and RCA analog audio inputs on the back.

Thankfully, today’s speakers come with more connectivity options than ever — Bluetooth, Wi-Fi, HDMI, optical, USB, and classic analog RCA — giving you incredible flexibility. And while all ...

Whether you're using RCA, XLR, speaker wire, or an LFE connection ... and connect the other end to the subwoofer's LFE input.

For users who want to add low-end extension, the HD4 Next Gen allows connection of a subwoofer video the RCA analog outputs. Audioengine recommends pairing it with their S6 or S8 subwoofers, but any ...