Nelson Pass: The Slot Loaded Open Baffle Project - Page 2

c2cthomas · 1st September 2011, 06:13 PM

Sorta reminds me of this array that P10 uploaded around the end of 2010. I wuz gonna use just the lower portion for a bass unit. Still don't have the time or $$$$

otto88 · 1st September 2011, 06:25 PM

Does the slot loading effectively make these cardiods?

vdi_nenna · 06:38 PM

Each driver set have their own slot, the exit of the slots should be rounded to reduce turbulence.
If you think about it, it matters, because the driver need to built pressure to force out the sound wave. The high pressure in the front and low pressure out the back reduce cancellation.

BTW-
Is noSmoking from a Dean Koonz noval?

noSmoking · 1st September 2011, 07:13 PM

Hi,
Thanks for the info ,I have 12 speakers and some dayton foil caps on the way they are all on sale,speakers were $7 and the caps about $2 each,PE,,,,I will layout some plans to build them,,,,The NoSmoking thing is a joke,I used to taunt the new tek's about letting out the blue smoke so they nicked named me NoSmoking,lol.
I want to run 4 mids per cabinet and 4 or more ribbion tweeters with maybe a couple of soft domes to smooth out the top end,I have a decware home wrecker with 2 peavey 18" in them,lol.
So a little at a time,
Cheers!

hm4nine · 1st September 2011, 07:15 PM

I suggest to have a look at this website; unfortunatly not all sides are written in English....

DIY Audio Projects

Rudolf · 1st September 2011, 07:54 PM

Quote:

Originally Posted by otto88

Does the slot loading effectively make these cardiods?

Not really. These polar diagram simulations show (from left to right) a closed box, an open baffle and a Ripole.

Rudolf

Elias · 1st September 2011, 08:10 PM

I have seen this in Visaton page, and I like the design very much ! Especially the placement of the midrange line array idea.

- Elias

Quote:

Originally Posted by Rudolf

It has already been done:

The Visaton Grand Orgue is simply a stack of Ripoles with a short line array of FR speakers in front of it.

Rudolf

Michael Rothacher · 1st September 2011, 08:11 PM

Very cool. To call the guy prolific would be an understatement.

I don't think he sleeps.

vdi_nenna · 08:28 PM

Quote:

I have 12 speakers and some dayton foil caps on the way they are all on sale,speakers were $7

Which driver?

vdi_nenna · 1st September 2011, 08:48 PM

I guess those are the Ultra-Symmetry amps in the second to last pic?
Driving the woofers maybe?

1st September 2011, 06:31 PM	#13
vdi_nenna diyAudio Member Join Date: Oct 2000 Location: PA, USA Blog Entries: 1	Each driver set have their own slot, the exit of the slots should be rounded to reduce turbulence. If you think about it, it matters, because the driver need to built pressure to force out the sound wave. The high pressure in the front and low pressure out the back reduce cancellation. BTW- Is noSmoking from a Dean Koonz noval? __________________ I build, therefore I am. Last edited by vdi_nenna; 1st September 2011 at 06:38 PM.

1st September 2011, 08:48 PM	#20
vdi_nenna diyAudio Member Join Date: Oct 2000 Location: PA, USA Blog Entries: 1	I guess those are the Ultra-Symmetry amps in the second to last pic? Driving the woofers maybe? __________________ I build, therefore I am.

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1st September 2011, 06:25 PM	#12
otto88 diyAudio Member Join Date: Dec 2007	Does the slot loading effectively make these cardiods?

1st September 2011, 07:13 PM	#14
noSmoking diyAudio Member Join Date: May 2010 Location: Texas	Hi, Thanks for the info ,I have 12 speakers and some dayton foil caps on the way they are all on sale,speakers were $7 and the caps about $2 each,PE,,,,I will layout some plans to build them,,,,The NoSmoking thing is a joke,I used to taunt the new tek's about letting out the blue smoke so they nicked named me NoSmoking,lol. I want to run 4 mids per cabinet and 4 or more ribbion tweeters with maybe a couple of soft domes to smooth out the top end,I have a decware home wrecker with 2 peavey 18" in them,lol. So a little at a time, Cheers!

1st September 2011, 07:15 PM	#15
hm4nine diyAudio Member Join Date: Mar 2005	I suggest to have a look at this website; unfortunatly not all sides are written in English.... DIY Audio Projects

1st September 2011, 08:11 PM	#18
Michael Rothacher www.audiohobby.com diyAudio Member Join Date: May 2001 Blog Entries: 3	Very cool. To call the guy prolific would be an understatement. I don't think he sleeps.