Question Building a full Marty sub ?


Active Member
Im thinking of building a Marty sub using a Dayton Ultimax driver 18".

I would prefer the size to be 1100mm x 500mm and to get 17 cubic feet of volume (is this correct ?) it would have to be 880mm high? Does that sound ok ? It will be ported. What are the specs for the ports?

I was going to put it behind my screen but don't want it shaking my screen, so i thought of having it under my screen and the bass output would come through some speaker cloth under my screen?

Is there any reason i could not put the driver lower down in the box? Instead of having it central on the box? Again this would help it not output through my screen ? thanks


Distinguished Member
martysub build plans are in the thread on avs

you can move the driver down the baffle for sure


Active Member
It's not so bad but at really high volume when it's plays really low everything shakes, sofa, walls and screen :)


Active Member
Depends on room size.
Behind screen it will shake screen much more then under the screen.
Check YouTube there was some videos.

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