TPA3116 2.1 sub out low pass

Hi all,

Not sure if I can find an easy solution here - I have a cheap Ali special, a 2.1 50/50/100w board based on the TPA3116. Actually works fine, only gripe is the sub output low passes around 1khz, accordingly a tonne of HF comes through. I'd read somewhere about this fault but hadn't seen any discussion of a fix.

Any thoughts on where to look to lower the low pass freq? I 've attached a pic- unfortunately that's all I have as the original listing no longer exists.

Matt
 

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