Legacy 1723 Subwoofers – LED status
Article summary
- Learn about the LED indicator statuses: red means standby, green means power on.
- If your subwoofer stays red, check for signal issues or play volume.
- Adjust your source’s gain or use a y-split to turn on the subwoofer sooner.
- Flashing green means no audio signal is detected—check your connections.
- Enhance your audio-visual setup with the 1723 Tower THX for an immersive experience.
LED mode indicator – Indicates what status the amplifier is in, whether it is in standby, power on, mute or protect. It will also blink during boot up and shutdown (unless shutdown from standby). Standby is indicated by a RED light. Power on is indicated with a GREEN light.
Auto ON/OFF
The LED will be solid RED until it senses a signal, then will turn solid GREEN.
“My subwoofer doesn’t go to solid green mode, whats wrong?” – In this scenario there is either a problem with the signal from your source or the cable, or you simply don’t play loud enough to make the amplifier turn on.
“I have to play loud before the subwoofer starts” – In this scenario you could try to increase the gain from your source, and at the same time decrease the subwoofer gain to keep the same output. If you don’t have the option of increasing gain from your source you can try to use a y-split if you are using a single RCA cable to the subwoofer, as it will increase the gain from the source and thus cause the subwoofer to turn on sooner.
Always on
After the amp boots up it will attempt to detect a signal at one of the inputs. LED flashes green. The signal threshold follows the chart above for required voltage to sense. Once turned on, the LED will be solid GREEN and the other input will be ignored.
“LED is flashing green, not getting any sound” – The subwoofer is not receiving a signal. Check your source and cable.
“LED is solid green, but I am not getting any sound” – If you are using XLR cables on the input and this happens, then contact customer support for further assistance. It most likely means the amplifier is somehow connecting on RCA input instead of XLR input.
Frequently asked questions
What does the LED mode indicator on my amplifier mean?
The LED mode indicator shows the amplifier's status: solid RED for standby, solid GREEN for power on, and it blinks during boot up and shutdown.
Why is my LED indicator stuck on solid RED?
If the LED is solid RED, it means the amplifier is in standby mode and not detecting a signal. Check the signal from your source or cables.
Why won't my subwoofer turn solid GREEN?
If your subwoofer doesn't turn solid GREEN, there may be a problem with the source signal or cable, or the volume might be too low for the amplifier to activate.
How can I get my subwoofer to turn on without playing loud?
Try increasing the gain from your source while reducing the subwoofer gain, or use a Y-split cable to enhance the signal reaching the subwoofer.
What does it mean if the LED flashes green but I hear no sound?
A flashing green LED indicates the subwoofer is not receiving a signal. Check your source and cables to ensure proper connection.
What should I do if the LED is solid GREEN but there's no sound?
If the LED is solid GREEN and you're using XLR inputs, contact customer support. This may indicate the amplifier is connecting via RCA instead of XLR inputs.
