a subwoofer dongle anyone tried it ? moderator NOT selling this !

Your punctuation (?) is fascinating.

I thought it looked interesting so I went to Parts Express to check it out, but they don't have it at all. No listing under that part number. Very strange.

Dayton DSP-LF at Parts Express

https://www.parts-express.com/Dayton-Audio-DSP-LF-Low-Frequency-DSP-Controller-230-520?quantity=1

@roxy54 

Your punctuation (?) is fascinating.

A creative way to get left-right justification without access to variable kern fonts…

@theophile 

Thanks for the link. It worked, but it is no longer available. Being able to read all about it from the link, I am no longer interested in it. Thanks again.

I don’t have any experience with this one, but personally I think I’d go with the REL wireless product.  
https://rel.net/shop/accessories/ht-air-mkii-wireless/

Cheers

The Dayton Audio product OP linked to is an inline DSP adapter, probably derived from one of their ADAU1701-based modules. While it is unclear what OP is trying to achieve, adding DSP capabilities to his sub did not appear to be one of his goals.