Thoughts on wireless subwoofer.

Hi Uberwaltz,

I’ve just noticed this thread. Thank you kindly for the mentions.

I’m uncertain as to whether or not the wireless connection to the sub you’ve ordered will work ok or not. I see that the wireless transmitter is powered by an AC adapter, which I assume is a wallwart type of device. So depending on its design, and perhaps on whether it has a three-prong AC plug or a two-prong plug, there may or may not be a ground loop issue or some other ground-related issue arising between it and the Ayre. If there is, and as a result the transmitter sees a hum component on its RCA inputs, presumably it would faithfully transmit the hum to the wireless receiver.

Should that occur, though, I’m thinking that a line-level audio isolation transformer connected between the Ayre and the wireless transmitter, or perhaps even between the Ayre and the RCA inputs on the sub itself, could very well be a solution.

At a low price point ($60) this may be a solution:

https://www.bhphotovideo.com/c/product/381596-REG/ART_DTI_DTI_Transformer_Isolator.html

Its datasheet:

http://www.artproaudio.com/framework/uploads/2018/06/ss_dti.pdf

A Jensen transformer may also be a solution, albeit at a higher price point (~ $250):

https://www.cs1.net/products/jensen_transformers.htm

Hopefully neither of those things will prove to be necessary, though. Looking forward to your findings.

Best regards,
-- Al

Thanks Al!

Should be here next week and then we will see what occurs.

I am sincerely hoping it is not that efficient that it faithfully passes on the ground loop hum...lol.

The ac transmitter will be plugged into the back of my Equicore 1800 whether that will help or not remains to be seen!

Will update later!

Well for once my thoughts and a plan actually panned out perfectly in real life practice!

Sub online via a Bluetooth transmitter and absolutely no ground loop hum at all on any input.

And with it being a 10 inch sub it is fairly tight and musical and able to use as a variable input and tailor its frequency response so it is dialed in and for once I would say it is near impossible for me to detect actual sounds coming from the sub itself.

But it has done its job exactly as I wanted and nicely just filled in the very low end that my 2 way Devores could not.

Even a blind squirrel finds a nut once in a while!

Great news, Uberwaltz, and congratulations!  And a great quote about the squirrel.  I'll have to remember that one for my own purposes :-)

Best regards,
-- Al 

Thx Al.

It used to be a favorite saying of a work colleague whilst troubleshooting electrical maintenance issues in factories.

A very skilled technician but always modest, a rare commodity nowadays.