I found myself dismissing the front LED lights altogether and instead trusted my ears to tell me what was going on. Even in a fully darkened room, the purple LED was difficult to see because it’s dimmer than the white LED and only blinks on for a fraction of a second before turning off again. The purple light, for example, is far too dim to be seen easily in daylight conditions. These indicators aren’t as good as they could be.
There are four LED lights on the front of the soundbar indicating different functions. A single green light means the soundbar is receiving an audio signal encoded with Dolby Digital, and a single purple light let’s you know one of the soundbar’s four audio modes is active (movie, music, night effect, or voice adjust). Two white lights indicate the input is set to the auxiliary analog input. A single white LED glows to let you know the soundbar is set to its optical connection. Speaking of the Polk’s LEDs, the series of four lets you know what’s happening. Activating a Bluetooth connection with the Polk Signa S1 soundbar displays a solid blue LED light on the front of the cabinet. Most soundbars at this price point come with Bluetooth streaming only. The Signa S1 has a digital Toslink optical input and a 3.5mm analog AUX input. Therefore, you’ll need to connect all your audio sources to your TV and then use your TV’s input button to switch between them.
There’s no HDMI port with audio return channel (ARC) or other HDMI inputs on the soundbar. Double-check your TV’s user manual or you might get sound from both the soundbar and the TV’s internal speakers. In this configuration, be sure that your TV is set for external audio or the internal speakers speakers are turned off.
You run either a Toslink optical cable (included) from your TV to the soundbar or an analog 3.5mm-to-RCA stereo cable (not included). Setting up the Signa S1 is simple and straightforward.
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