Question for WiiM Ultra owners: What is the Maximum Subwoofer Output Latency value (ms)?

Barr

Member
Joined
Dec 20, 2025
Messages
5
Hi everyone,

I am planning a setup where I need to apply a significant delay to the wired Sub Out to sync it with a high-latency external output (Bluetooth/USB). I currently do not own a WiiM Ultra, so I cannot check the app myself.

Could someone with a WiiM Ultra please check the "Sync Subwoofer & Speakers" menu for me?
  1. Terminology: I understand I can adjust the "Subwoofer Output Latency" Is that the correct name of the delay setting? Is this slider in milliseconds (ms)?
  2. The Limit: What is the maximum value this slider accepts? (e.g. does it stop at 50ms, or can it go up to 500ms?)

My Use Case: I need to delay the wired Subwoofer by approximately 150ms - 250ms to sync it with the latency of an LDAC Bluetooth connection (FiiO BT11). Standard "Distance" alignment is usually just a few ms. I need to know if the WiiM software allows for these "lip-sync like" high values on the RCA Sub Out.

(Optional) A screenshot of this specific settings screen would be incredibly helpful!

Thanks in advance!

Barr
 
Hi everyone,

I am planning a setup where I need to apply a significant delay to the wired Sub Out to sync it with a high-latency external output (Bluetooth/USB). I currently do not own a WiiM Ultra, so I cannot check the app myself.

Could someone with a WiiM Ultra please check the "Sync Subwoofer & Speakers" menu for me?
  1. Terminology: I understand I can adjust the "Subwoofer Output Latency" Is that the correct name of the delay setting? Is this slider in milliseconds (ms)?
  2. The Limit: What is the maximum value this slider accepts? (e.g. does it stop at 50ms, or can it go up to 500ms?)

My Use Case: I need to delay the wired Subwoofer by approximately 150ms - 250ms to sync it with the latency of an LDAC Bluetooth connection (FiiO BT11). Standard "Distance" alignment is usually just a few ms. I need to know if the WiiM software allows for these "lip-sync like" high values on the RCA Sub Out.

(Optional) A screenshot of this specific settings screen would be incredibly helpful!

Thanks in advance!

Barr
Please have a look at the WiiM documentation.

 
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