Help - Sine Wave Controllers, which one ?

Hello crew,

My new rocket, sorry, my new bike is up and running. Everything is fine and beautiful, except...the motor/controller noise. Its noisy...really noisy.
I start to look, to sine wave controllers. The sabvoton is an example. Maybe too big ? And I do not pay a little fortune.
What kind of offer there is in the market ? To put around 5000watts, not less ?
Opinions ?

Thanks,~
Luís.

I personally use Kelly a lot.
72V 5.7KW Continuous Controller:
http://kellycontroller.com/kls7218s24v-72v200asinusoidal-brushless-motor-controller-p-1401.html

You could look into sinewave controllers sold by es member Powervelocity:

https://endless-sphere.com/forums/viewtopic.php?f=31&t=75888&hilit=powervelocity

and a review thread: https://endless-sphere.com/forums/viewtopic.php?f=4&t=90536&hilit=powervelocity

I've used the 12-Fet version which he upgraded for me with beefy traces; it wsa reasonably priced and it has worked flawlessly.

I also have a Powervelocity controller on my A2B. Very quiet and has field weakening ability. These are likely the least expensive option.

If you don't mind building your own, the Lebowski controller is nice; there's various powerstage designs by different members, all the way up to one big enough to power a car (used for drag races, IIRC) by Arlo1.

There are some kits in development to make it easier, but it is still a DIY thing.