Thoughts on wireless subwoofer.


Just looking for thoughts on whether this idea might actually work!

I have an Ayre ax7e integrated amp which does not have a sub out so best connection to a sub would be from speaker terminals taking care on connections as this is a fully balanced design.
This has been discussed previously in other threads and with Almarg.
However in my system hooking up a sub like this AND alternatively using the tape out RCA resulted in a very audible ground hum especially on phono.
This I could not get rid of so abandoned the idea.

Now here are my thoughts anew.

What if there was no actual physical connection between amp and sub? Surely then I should not suffer a ground loop hum?
Started looking at wireless subs and there are a few hifi orientated brands than run of the mill HT units.
One in particular I have been studying is the Martin Logan Dynamo 700w. This has a built in receiver and uses a transmitter that accepts RCA inputs and transmits on Bluetooth to the sub.

Sounds like it should work but.....

Anybody see any downside or has actually used a wireless sub?

Thank you.
128x128Ag insider logo xs@2xuberwaltz
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.


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