W frame OB sub

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tremrej65

  • Jr. Member
  • Posts: 16
W frame OB sub
« on: 12 Mar 2025, 03:55 pm »
I'm looking to build a Double Trouble OB subwoofer.
I see lots of H frame build. None of the W Frame.
I like that the W frame is smaller than the H frame (23.5 inches vs 26).
Question: any difference in sound quality between the two?

Early B.

Re: W frame OB sub
« Reply #1 on: 12 Mar 2025, 04:12 pm »
The W-frame hasn't been recommended for nearly 20 years. I started my OB servo sub journey with a W-frame and replaced it with an H-frame. The H-frame is definitely better, both sonically and structurally. 

tremrej65

  • Jr. Member
  • Posts: 16
Re: W frame OB sub
« Reply #2 on: 12 Mar 2025, 11:57 pm »
H frame it is then.
Thanks for sharing your knowledge.
Rejean

Danny Richie

Re: W frame OB sub
« Reply #3 on: 17 Mar 2025, 03:41 am »
The only advantage of the W frame is that it makes it a little shorter.

The W frame also leaves a larger unbraced area in the front. So side panels need to be thicker to compensate for that.