Melon Head's State of the "DUMB" Open Baffle Design

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Dumber Is Better (DIB), LMAO it worked

I am not telling you what dumb idea I tried out on the 5.6 cabinet until I also try it with a port, but it seems to have worked.
The response between 80Hz and 120Hz seems better

EDIT: It is only subtle really, but I am hoping once I add the port it will be more significant
 

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Summary:

I like Open baffles.
I like the Slot Load.
I don't like the side wings.
I don't like sealed boxes.
I used the slot as seen on the pics (Eminence Beta 15) + bass boost as on NP's SLOB. I like that bass boost 🙂

I would like to try two Eminence Beta 15's slot loaded, like in Nelson Pass's SLOB's, but smaller and narrower baffles, like mine (50x120cm). Or two Betas one on top of the other, slot loaded...
 

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I was just wandering what the wings do to the sound and performance of the OB bass. Cuibono did a nice little OB unit with small wings and I couldnt help but think this had to add something to the sound. What exactly happens when adding symmetrical wings on the front and back. Also, it the SLOB a form of ripole or is the fact that the cones are separated by a divider change this?
 
I was just wandering what the wings do to the sound and performance of the OB bass. Cuibono did a nice little OB unit with small wings and I couldnt help but think this had to add something to the sound. What exactly happens when adding symmetrical wings on the front and back. Also, it the SLOB a form of ripole or is the fact that the cones are separated by a divider change this?

Just a few observations
The wings at 45 degrees (aka PHY baffle) give you a very nice smooth response.
Do not place the FR driver to close to the top of the baffle. Extend the baffle up higher.
Don't build the baffle too large if you have a small room
 
Last edited:
Summary:

I like Open baffles.
I like the Slot Load.
I don't like the side wings.
I don't like sealed boxes.
I used the slot as seen on the pics (Eminence Beta 15) + bass boost as on NP's SLOB. I like that bass boost 🙂

I would like to try two Eminence Beta 15's slot loaded, like in Nelson Pass's SLOB's, but smaller and narrower baffles, like mine (50x120cm). Or two Betas one on top of the other, slot loaded...

Yes, Nelsons Bass boost is very nice.
Multiple woofers kick butt when it comes to dynamics. This is very important to produce realistic bass and drum sounds
After this experience with Open baffle I will probably never build another cabinet again.

I still need to build the Onken cabinet but I suspect that will be my last.
 
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