Idiot proof 2 way open baffle

NSX · 13th November 2011, 02:04 PM

I would like to put togeather a simple 2 way open baffle to put on top of two built in book shelf units. The room is about 25x25 so something with some oomph would be needed. Also a larger cone would get down to the 35-40 Hz I would like. A 325 watt sub will take it from there. Top end 20 Khz. I just dont have the skills or equipment to build a box plus the opens that I have heard are pretty good.
A Yamaha RSA1000 receiver 100 Watt x7 will drive them in a 5.1 surround system. The speakers should be of ample quality to serve as mains for audio listening only.

Any recomendations of kits or plans ?
Is this the right direction in your opinion ?
Thanks.

Pano · 13th November 2011, 02:52 PM

How big a baffle? What's your budget?
Fast, fun, Inexpensive OB project

jerome69 · 03:16 PM

Yes good direction...

What is your budget ?

Some kits at different prices. There are not a lot of kits in the world. These kits are very hard to design.
Acapella NEXTSEAS W22NY001 +
Dionysus
Sunflower [Redux] - undefinition
...

Some kits, full open baffle passive :
OBL11
Big passive OB project (my project)
http://www.adamhall.com/index.php?se...rnativdownload
...

NSX · 13th November 2011, 03:55 PM

I was just doing some research on open baffles 2 ways and came across an article on building a 2 way that goes down to 40 hz.
The down side is that its a floor stander using a 15" emminance driver and small cone upper/tweeter. The build was actually pretty reasonable at around $400.
For some reason I cant paste the link.
I may have to go higher in Hz to 60-70 range to make it work.
A 15" mounted abouve my book case on a half a sheet of plwood will not get high marks in the WAF.
I think it would trap the back of the speaker any how.
Pehaps an 8" with a real tweeter.
PS I was considering a Klipshorn mid range horn and tweeter combo and putting them up there. Dont know how low the midrange horn goes and if the sub could fill in the gap.
http://www.quarter-wave.com/OBs/OB_Design.pdf

http://www.quarter-wave.com/OBs/OB_Design.pdf
http://www.quarter-wave.com/OBs/OB_Design.pdf http://www.quarter-wave.com/OBs/OB_Design.pdf

jerome69 · 13th November 2011, 04:13 PM

To go low in bass, open baffle needs drivers with area.
A 8" + 1" why not ? till 100Hz.
look at this : Dipole protos
If you want the baffle small, go to active.

natehansen66 · 13th November 2011, 04:53 PM

You need big cones and power to get "oomph". How close to the back wall will these be? Dipoles need space..........mine are about 5 feet from the back wall and only about 2 from the side walls, and I'd still like to get them out farther!

NSX · 13th November 2011, 08:01 PM

Quote:

Originally Posted by natehansen66

You need big cones and power to get "oomph". How close to the back wall will these be? Dipoles need space..........mine are about 5 feet from the back wall and only about 2 from the side walls, and I'd still like to get them out farther!

I have 16" from the front of the bookshelf to the back wall. Height of each space is 24" and the width is 40". Past that is open space and the distance between shelves is about 6'.

kevinkr · 13th November 2011, 08:05 PM

I fixed the typo in the thread title...

rvsixer · 13th November 2011, 08:56 PM

Quote:

Originally Posted by NSX

I have 16" from the front of the bookshelf to the back wall. Height of each space is 24" and the width is 40". Past that is open space and the distance between shelves is about 6'.

I'd suggest looking at other solutions, that ain't no place for OB.

NSX · 13th November 2011, 10:05 PM

Quote:

Originally Posted by kevinkr

I fixed the typo in the thread title...

Like I said; Idiot proof

13th November 2011, 02:04 PM	#1
NSX diyAudio Member Join Date: Nov 2011 Location: DFW	Idiot proof 2 way open baffle I would like to put togeather a simple 2 way open baffle to put on top of two built in book shelf units. The room is about 25x25 so something with some oomph would be needed. Also a larger cone would get down to the 35-40 Hz I would like. A 325 watt sub will take it from there. Top end 20 Khz. I just dont have the skills or equipment to build a box plus the opens that I have heard are pretty good. A Yamaha RSA1000 receiver 100 Watt x7 will drive them in a 5.1 surround system. The speakers should be of ample quality to serve as mains for audio listening only. Any recomendations of kits or plans ? Is this the right direction in your opinion ? Thanks.

13th November 2011, 03:13 PM	#3
jerome69 diyAudio Member Join Date: Feb 2008 Location: Lyon	Yes good direction... What is your budget ? Some kits at different prices. There are not a lot of kits in the world. These kits are very hard to design. Acapella NEXTSEAS W22NY001 + Dionysus Sunflower [Redux] - undefinition ... Some kits, full open baffle passive : OBL11 Big passive OB project (my project) http://www.adamhall.com/index.php?se...rnativdownload ... Last edited by jerome69; 13th November 2011 at 03:16 PM.

13th November 2011, 08:05 PM	#8
kevinkr diyAudio Moderator Join Date: Sep 2004 Location: Boston, Massachusetts Blog Entries: 6	I fixed the typo in the thread title... __________________ www.kta-hifi.net

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13th November 2011, 02:52 PM	#2
Pano diyAudio Moderator Join Date: Oct 2004 Location: North Carolina Blog Entries: 4	How big a baffle? What's your budget? Fast, fun, Inexpensive OB project

13th November 2011, 03:55 PM	#4
NSX diyAudio Member Join Date: Nov 2011 Location: DFW	I was just doing some research on open baffles 2 ways and came across an article on building a 2 way that goes down to 40 hz. The down side is that its a floor stander using a 15" emminance driver and small cone upper/tweeter. The build was actually pretty reasonable at around $400. For some reason I cant paste the link. I may have to go higher in Hz to 60-70 range to make it work. A 15" mounted abouve my book case on a half a sheet of plwood will not get high marks in the WAF. I think it would trap the back of the speaker any how. Pehaps an 8" with a real tweeter. PS I was considering a Klipshorn mid range horn and tweeter combo and putting them up there. Dont know how low the midrange horn goes and if the sub could fill in the gap. http://www.quarter-wave.com/OBs/OB_Design.pdf http://www.quarter-wave.com/OBs/OB_Design.pdf http://www.quarter-wave.com/OBs/OB_Design.pdf http://www.quarter-wave.com/OBs/OB_Design.pdf

13th November 2011, 04:13 PM	#5
jerome69 diyAudio Member Join Date: Feb 2008 Location: Lyon	To go low in bass, open baffle needs drivers with area. A 8" + 1" why not ? till 100Hz. look at this : Dipole protos If you want the baffle small, go to active.

13th November 2011, 04:53 PM	#6
natehansen66 diyAudio Member Join Date: Mar 2011 Location: Rochester, MN	You need big cones and power to get "oomph". How close to the back wall will these be? Dipoles need space..........mine are about 5 feet from the back wall and only about 2 from the side walls, and I'd still like to get them out farther!

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