Infinite baffle idea

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Simon Hickie
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Re: Infinite baffle idea

Unread post by Simon Hickie » Thu Oct 17, 2019 2:39 pm

For a bass driver, the Monacor SP-382PA is an excellent 15 inch driver - decent QTS & low Fs. It's what I use in my OBs.

valvesRus
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Re: Infinite baffle idea

Unread post by valvesRus » Thu Oct 17, 2019 2:50 pm

Simon Hickie wrote:
Thu Oct 17, 2019 2:39 pm
For a bass driver, the Monacor SP-382PA is an excellent 15 inch driver - decent QTS & low Fs. It's what I use in my OBs.
The Eminence Beta 15" is good for OB use. :)

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karatestu
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Re: Infinite baffle idea

Unread post by karatestu » Thu Oct 17, 2019 2:54 pm

Thanks. Do you know of any 12" ? - i can't get 15" between the floor joists.
DIY inspired by Richard "The Doc" Dunn RIP

Simon Hickie
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Re: Infinite baffle idea

Unread post by Simon Hickie » Thu Oct 17, 2019 5:07 pm

karatestu wrote:
Thu Oct 17, 2019 2:54 pm
Thanks. Do you know of any 12" ? - i can't get 15" between the floor joists.
When I was working on my OB design, I had to weigh up 1 x 15 inch vs 2 x 12 inch per side. In the end, I found a real paucity of highish QTS 12 inch drivers. The pro driver market seems one to look at. I'll see what I can remember.

Simon Hickie
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Re: Infinite baffle idea

Unread post by Simon Hickie » Thu Oct 17, 2019 5:09 pm

This one, although Fs is a little high https://www.monacor.co.uk/categories/12-3/vnr/103310/

Simon Hickie
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Re: Infinite baffle idea

Unread post by Simon Hickie » Thu Oct 17, 2019 5:12 pm


Daniel Quinn
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Re: Infinite baffle idea

Unread post by Daniel Quinn » Thu Oct 17, 2019 5:19 pm

Paul messanger built some drivers in to his wall according to the doc. He didn't discover nirvana

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karatestu
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Re: Infinite baffle idea

Unread post by karatestu » Thu Oct 17, 2019 8:00 pm

I am not sure what i would find.

The bass sound that can be produced from a box less speaker would be a start.
And increased amounts of low bass
No baffle step loss
No big speaker cabinets would be nice

To me the idea of having all the drivers in the floor and tweeter sunk into the plastered brick walls really appeals. I can just see my kids pouring juice through the grilles though :lol:

Mid range is said to sound flat and uninteresting when done in infinite baffle. Who knows ?
DIY inspired by Richard "The Doc" Dunn RIP

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Docfoster
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Re: Infinite baffle idea

Unread post by Docfoster » Fri Oct 18, 2019 8:26 am

Simon Hickie wrote:
Thu Oct 17, 2019 10:37 am
Soundstage implications are interesting. I have to say that my DIY OB speakers provide an extraordinarily big 3D soundstage that's high wide and deep - distinctly better than my semi-omnis. However, they need room to breathe with a meter or more behind them. Therefore, this would mean more rather than less speaker in the room.
My DIY sealed boxes (the ones with the 18 inch drivers) need about that distance behind them too. Maybe it’s partly to do with driver size as well as with the open baffle...?
I mean, how much bass energy can my sealed boxes’ 18mm of braced MDF absorb and internally reflect anyway...? (Similarly for wooden floorboards or plasterboard walls and ceilings.)
Maybe a lot of sealed / IB speakers are effectively semi-OB below a certain frequency! :-D
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karatestu
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Re: Infinite baffle idea

Unread post by karatestu » Fri Oct 18, 2019 8:37 am

Thanks for the driver recommendations.

The 12 inchers do have a higher Fs than i would like. The 15" looks perfect but not sure i could shoe horn it in. Might need to get the chain saw out :lol:
DIY inspired by Richard "The Doc" Dunn RIP

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