Peerless 830987 3" full range in dipole

matevana · 17th June 2010, 06:09 PM

Hi Folks,

I am experimenting with a small OB design and would appreciate your feedback. My goals were to develop a room friendly dipole by using a 3" full range driver. A helper woofer is used to address dipole cancellation.

I am very pleased with the Peerless 830987 (inverted surround version of 830986) and have documented my findings below. Even though my project might be considered a 2-way, I thought this might be helpful to those of you who are looking for an inexpensive apt driver for true single driver application.

http://home.comcast.net/~cunundrum

Ed

chris661 · 17th June 2010, 07:55 PM

Nice write-up. Thanks for posting that.

matevana · 17th June 2010, 08:09 PM

hey chris. thanks for taking the time to check it out!

aptquark · 17th June 2010, 08:32 PM

It really is a nice read matevana. I wan't one now!

Godzilla · 17th June 2010, 09:12 PM

Love the simple baffle design. I was thinking about something similar using the 'full range' PE buyout for $10 but my sims were somewhat disappointing with similar baffle dimensions. It may sound better in real life tho... Your project is inspiring!

matevana · 17th June 2010, 10:25 PM

Quote:

Originally Posted by Godzilla

Love the simple baffle design. I was thinking about something similar using the 'full range' PE buyout for $10 but my sims were somewhat disappointing with similar baffle dimensions. It may sound better in real life tho... Your project is inspiring!

My experience with software simulation in dipoles has been somewhat hit-or-miss, much more so than with conventional designs. I built a simple test baffle with panels that slide on both axis allowing for multiple height/width combos. Of course this is only helpful when you have the driver in hand, but it seems to be a good way to model a baffle in the particular environment your working in. I wouldn't be surprised if PE buyout sounds better than it actually modeled.

boris81 · 22nd June 2010, 09:18 PM

great project, matevana! these look like the perfect ob desktop computer speakers.

human.bin · 23rd June 2010, 07:50 AM

very nice, and very well written. thanks

bjorno · 23rd June 2010, 03:49 PM

Quote:

Originally Posted by matevana

My experience with software simulation in dipoles has been somewhat hit-or-miss,..but it seems to be a good way to model a baffle in the particular environment your working in..

Hi matevana,

I checked your design using MJK:s program... Seems you made a good design

(compare with my simulations). Noticed the low FR corner that can be extended with a good monopole sub..See the T-TQWT using an additional Alpine woofer.

b

brookbh · 24th June 2010, 03:19 AM

I just recently (this week) bought some of the Lagan beech counter top from Ikea, and can say that it seems well constructed, solid and fairly heavy in its sheet form. Its going to be used for a flexy table/rack build coming soon. It seems like it would be great for dipoles, or any front baffle...

The write up looks great, and is filled with useful information. Did you consider any other 10" woofers?

17th June 2010, 06:09 PM	#1
matevana diyAudio Member Join Date: Feb 2010	Peerless 830987 3" full range in dipole Hi Folks, I am experimenting with a small OB design and would appreciate your feedback. My goals were to develop a room friendly dipole by using a 3" full range driver. A helper woofer is used to address dipole cancellation. I am very pleased with the Peerless 830987 (inverted surround version of 830986) and have documented my findings below. Even though my project might be considered a 2-way, I thought this might be helpful to those of you who are looking for an inexpensive apt driver for true single driver application. http://home.comcast.net/~cunundrum Ed

17th June 2010, 07:55 PM	#2
chris661 diyAudio Member Join Date: Feb 2008 Location: Lancashire Blog Entries: 7	Nice write-up. Thanks for posting that. __________________ "Throwing parts at a failure is like throwing sponges at a rainstorm." - Enzo My setup: http://www.diyaudio.com/forums/multi...tang-band.html

17th June 2010, 09:12 PM	#5
Godzilla diyAudio Member Join Date: Nov 2005 Location: New York	Love the simple baffle design. I was thinking about something similar using the 'full range' PE buyout for $10 but my sims were somewhat disappointing with similar baffle dimensions. It may sound better in real life tho... Your project is inspiring! __________________ www.zillaaudio.com/bib/bib.asp www.ZillaAudio.com

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17th June 2010, 08:09 PM	#3
matevana diyAudio Member Join Date: Feb 2010	hey chris. thanks for taking the time to check it out!

17th June 2010, 08:32 PM	#4
aptquark diyAudio Member Join Date: Jun 2010 Location: MS Blog Entries: 1	It really is a nice read matevana. I wan't one now!

22nd June 2010, 09:18 PM	#7
boris81 diyAudio Member Join Date: Oct 2009 Location: white plains, ny	great project, matevana! these look like the perfect ob desktop computer speakers.

23rd June 2010, 07:50 AM	#8
human.bin diyAudio Member Join Date: May 2008	very nice, and very well written. thanks

24th June 2010, 03:19 AM	#10
brookbh diyAudio Member Join Date: Jan 2008	I just recently (this week) bought some of the Lagan beech counter top from Ikea, and can say that it seems well constructed, solid and fairly heavy in its sheet form. Its going to be used for a flexy table/rack build coming soon. It seems like it would be great for dipoles, or any front baffle... The write up looks great, and is filled with useful information. Did you consider any other 10" woofers?

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