Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Testing box configurations with Pioneer B20
Testing box configurations with Pioneer B20
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
Reply
 
Thread Tools Search this Thread
Old 27th June 2008, 07:18 PM   #1
davidallancole is offline davidallancole  Canada
diyAudio Member
 
Join Date: Nov 2005
Default Testing box configurations with Pioneer B20

Hi All,

I plan to build a test box for use with the Pioneer B20 when I move to Victoria, BC.

What I intended was to build a 3 cubic foot box with a slotted port on the bottom like the one from Godzillas site. I can then also stuff the port to seal it off, so I then have a sealed box to play with. I would then be able to play with putting a series resistor in line with the amplifier and playing with constant current amplifiers to increase the low frequencies as well as the high frequencies with the sealed box like Nelson Pass did.

So I have a few questions about this setup then:

1. Godzilla suggests a box size of 58" x 9.25" x 9.75". Is there a more optimum dimension set than this (other than golden ratio)? I would like to keep the speaker up around ear level (when sitting).

2. What would you suggest for stuffing the box that would work well with both the ported and sealed setup?

3. Is there anything else I may be missing?
  Reply With Quote
Old 27th June 2008, 07:53 PM   #2
Godzilla is offline Godzilla  United States
diyAudio Member
 
Godzilla's Avatar
 
Join Date: Nov 2005
Location: New York
>>> Is there anything else I may be missing?

A tweeter.

I chose those dimensions because of standard sizes of lumber. Choose dims that fit your space best. When you do, if you need a reworking of the port/slot let me know and i will figure it out for you.

Enjoy!
Godzilla
  Reply With Quote
Old 27th June 2008, 07:59 PM   #3
davidallancole is offline davidallancole  Canada
diyAudio Member
 
Join Date: Nov 2005
Good suggestion. The recommended tweeters are cheap so I might as well get some.

Would there be any problems with resonances with the dimensions you suggested? The 9.25 and 9.75 are aweful close together.
  Reply With Quote
Old 27th June 2008, 09:50 PM   #4
Scottmoose is offline Scottmoose  United Kingdom
diyAudio Member
 
Scottmoose's Avatar
 
Join Date: Mar 2005
Location: UK
Actually, that box is more of an MLTL with those dimensions than a BR. If you line the top, back & one sidewall with damping material (about an inch thick) you should be fine. BTW, I'd mount the driver-centre 20.5in down from the internal top to supress some of the line harmonic modes & give the smoothest response.
__________________
"'That'll do", comes the cry of the perfectionist down the ages.' James May -The Reassembler
www.wodendesign.com Community sites www.frugal-horn.com http://frugal-phile.com/
  Reply With Quote
Old 27th June 2008, 10:02 PM   #5
davidallancole is offline davidallancole  Canada
diyAudio Member
 
Join Date: Nov 2005
Thanks Scottmoose. I will try Godzillas dimensions for the test box.
  Reply With Quote
Old 1st January 2013, 02:08 AM   #6
gychang is offline gychang  United States
diyAudio Member
 
Join Date: Feb 2005
Location: Davis, California
Quote:
Originally Posted by davidallancole View Post
Thanks Scottmoose. I will try Godzillas dimensions for the test box.
do u by any chance have sketchup or dimensions?

gychang
__________________
--
Good sound from Davis, CA
  Reply With Quote

Reply


Testing box configurations with Pioneer B20Hide 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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Some other Source Follower Configurations EUVL Pass Labs 510 28th August 2017 12:41 PM
How to braid Cables (Configurations) Rarkov Everything Else 12 8th February 2013 07:14 AM
sensitivities of amplifier configurations metebalci Tubes / Valves 8 24th December 2004 01:36 PM
BL configurations? TRANSDUCEReng Multi-Way 3 27th October 2004 04:59 AM


New To Site? Need Help?

All times are GMT. The time now is 05:51 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 16.67%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio
Wiki