Speaker plinth material bottom ported Zu Omen Defs


Currently my Zu Omen Defs sit on hardwood floor ( bamboo) in my basement finished listening room. Even though we are very good at keeping sewer cleared, video checks every year, I’m always paranoid about water overflow. Our basement is bone dry. I would like to raise the zus off the floor about an inch or two with a plinth. IMO, mapleshade’s at $600 + each is pricey. I can make my own. My question is wood vs granite on bottom slot ported speakers like Zu. One would think that granite may be too reflective for bass vs wood. Just curious if anyone has any thoughts. For the trolls: yes we have flood insurance, sump pumps, etc. I’m not moving the gear back upstairs. Just asking about best material. 

Thanks
aberyclark

Showing 3 responses by rar1

Hi Bob - 

Because I am using the smaller 4 inch square tiles as footers and centering them near the corners of the speaker (where you would screw in spikes), I am getting the clearance I need.  Ports are happy.    

It was when I was using the full 12 inch tile that I was in essence adding another floor to the face of the port, which obviously hurt the sound.

Unless I misread the OP's original post, he was thinking of using a granite or wood plinth.  I was just not sure how that would be any different than direct floor placement, unless of course spikes are used.

Thanks for the reply.

Rich 

 
I am a bit confused with the speaker placement as described by the OP.  

I own the Zu Dirty Weekender floor standers.  I always thought that the speakers had to be raised some minute amount off the floor, so as not to block the bottom slot ports.  I do not use the supplied spikes.  I had read somewhere or heard on one of Zu's YouTube videos to use marbles to allow some breathing room for those ports.

I live in a pre-war apartment house on a busy street and had been using 12" x 12" tiles of neoprene and cork under my speakers for vibration control.  Since acquiring the Zu's, I have used the neoprene and cork 4" pads.  

Flush to the floor or on a plinth, the Dirty Weekenders sounded slightly muffled.  With the pads, the speakers sound much better (obviously).  I use 3 pads per speaker (2 front, 1 rear). 

https://www.globalindustrial.com/p/fasteners/vibration-isolators/pads/neoprene-cork-pad-4-x-4-x-1

Rich 
Well if you are open to a $13 solution, this may be a way to go.  These are the 2 inch version of the pads that I was referring to.  Essentially a rubber and cork sandwich.  Should work with the spikes.  

https://www.ebay.com/itm/ANTI-VIBRATION-ISOLATION-PADS-2-X-2-X-7-8-RIBBED-RUBBER-WITH-CORK-CENTER-V/...

Rich