need FR suggestions for an old enclosure. - diyAudio
Go Back   Home > Forums > Loudspeakers > Full Range
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Thread Tools Search this Thread
Old 28th April 2009, 02:30 AM   #1
brookbh is offline brookbh  United States
diyAudio Member
Join Date: Jan 2008
Default need FR suggestions for an old enclosure.

My buddy's got an old 1977 Bose 601 pair of speakers, the problem is the 8" woofers (a pair in each speaker) have rotted surrounds.

Instead of trying to replace the four 8" woofers, I figured i could just seal the enclosure and put some full range speakers in there. There is a front mounted 8" woofer, and an angled top mounted 8" woofer. Then I would add bracing and blocks to get to the desired volume in the cab.

What is was thinking:

Option 1 -- B20 + cheap dayton dome tweet
Option 2 -- mini array with dayton 5" PA 130-8s or pioneer 4" A11s
Option 3 -- Goldwood 8" with whizzer

I know that baffle width and height is not ideal, nor are a lot of other aspects. This is just a low budget project for a buddy who isn't into speakers, he just wants some sound for a dorm room in college.

I'm just looking for ideas, suggestions, comments, alternatives. Anything yall got on this subject. Budget is minimal, he's kind of cheap. Thanks for looking...
  Reply With Quote
Old 28th April 2009, 02:52 AM   #2
diyAudio Member
Join Date: Sep 2006
I highly recommend going with the B20s and cheap dome tweeters. That was my previous setup and it was very nice for all kinds of music. Very unfatiguing, smooth and a joy to listen to.

Also I seem to remember there being a comparison between the B20 and the Goldwoods and the Pioneers were superior.

If this is for a dorm setup, I would also advise against doing the mini array simply because for it to work, the listening distance should be far to reduce the path length differences between the drivers and reduce cancellation effects. Unless you do a focus array, but they have tiny sweet spots.
  Reply With Quote
Old 28th April 2009, 02:53 AM   #3
This speaker DIY thing, it's pretty addicting!
diyAudio Member
mikejennens's Avatar
Join Date: Feb 2008
Location: Bismarck, ND
Have you thought about re-foaming the woofers? It wouldn't be too expensive and it might be less work than reworking the cabinet. Plus, they'd probably sound pretty good.
Jolida SJ502A, Squeezebox Touch, Paul Carmody's Sunflowers, Jeff Bagby's Continuums; Planet 10 HiFi's MarkAudio A 7.3 Frugalhorns and MarkAudio CHP-70s, Bjorn's PS95 TABAQs
  Reply With Quote
Old 28th April 2009, 04:19 AM   #4
brookbh is offline brookbh  United States
diyAudio Member
Join Date: Jan 2008
I haven't looked into re-foaming the woofer. While the design of the speaker is very interesting, I just assumed that a more conventional setup requiring a full replacement of the drivers used in these speakers would lead to better results. They are 30 year old paper drivers and look to be in rough shape.

I have only removed one woofer, and that was to try and see if a model number or any information was available via the back of the speaker. The position I was taking, was that i could use a B20 and tweeter and later redo the enclosure into a BVR or BIB if an upgrade was called for.
  Reply With Quote
Old 28th April 2009, 05:25 AM   #5
diyAudio Moderator
planet10's Avatar
Join Date: Oct 2001
Location: Victoria, BC, NA, Sol III
Blog Entries: 5
I'd close up the hole on the front and mount a B20 on the sloped baffle with a forward firing tweeter. The box volume should work OK, you'll probably need a fair amount of damping.

community sites,, ........ commercial site planet10-HiFi
p10-hifi forum here at diyA
  Reply With Quote


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Enclosure for breadboard suggestions espressogeek Everything Else 1 21st September 2008 03:12 PM
enclosure suggestions deki Multi-Way 3 12th November 2006 09:06 AM
Tangband W4-657s Enclosure Suggestions jdbon Multi-Way 1 4th March 2003 07:18 AM
Are you looking for suggestions for enclosure shapes? kneadle Multi-Way 4 2nd March 2003 02:42 PM

New To Site? Need Help?

All times are GMT. The time now is 06:30 PM.

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999-2017 diyAudio

Content Relevant URLs by vBSEO 3.3.2