Hi-Vi B2S Transmission Line - diyAudio
Go Back   Home > Forums > Loudspeakers > Multi-Way
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Multi-Way Conventional loudspeakers with crossovers

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 12th August 2002, 02:31 PM   #1
BAM is offline BAM
diyAudio Member
Join Date: Sep 2001
Location: Carmel, IN; West Lafayette, IN
Send a message via AIM to BAM
Default Hi-Vi B2S Transmission Line

I just had a wild idea: I have an old boom box lying around that puts out 5 watts per channel and I want to build some mini-speakers. I want to find the speaker enclosure design that results in the least dissipation of both the front wave and the back wave of the driver so I can use it all the way out to where the driver rolls off and still get plenty of bass energy.

The Hi-Vi B2S is a speaker that looks similar to the Harman-Kardon Odyssey drivers except they do not use neodymium magnets, they have square frames, and they have copper-colored diaphragms. The B2S responds up to 15,000 Hz and is flat down to 300 Hz, but from the frequency response graphs, they have output down to about 100 Hz, which is as far as I need for this small application. The Fs of the driver is 150 Hz or so.

purists everywhere gasp at the idea of a 2" driver to try and reproduce any sort of bass but I just want a couple tiny speakers so I can take this to the pool and out in the garage and other places and play music with them. They need to be compact with a small footprint, so I was planning on using a 3-cubic-inch box with the 2" driver and a length of 2" PVC pipe that would serve as the transmission line. The pipe would serve as a sort of stand and the terminus of the line would be in the base which would be supported 2 or 3" off the ground so the output is omnidirectional (with the pipe's opening facing the floor).

Am I really dumb even to propose this?
  Reply With Quote
Old 14th August 2002, 08:59 AM   #2
diyAudio Moderator
pinkmouse's Avatar
Join Date: Apr 2002
Location: Rotherham, England
Hi Bam, go for it!

The line for a typical TL is a quarter wavelength or just slightly less, than the Fs of the speaker, with an increasing density of stuffing towards the end of the line.

For more info, check out Dave's site http://www.t-linespeakers.org/
Rick: Oh Cliff / Sometimes it must be difficult not to feel as if / You really are a cliff / when fascists keep trying to push you over it! / Are they the lemmings / Or are you, Cliff? / Or are you Cliff?
  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
how to combine Line array and transmission line together Jared Multi-Way 7 15th December 2012 01:20 PM
about transmission line bigcatdairy Multi-Way 14 25th November 2011 07:46 AM
line array + transmission line ? zobsky Multi-Way 12 16th August 2006 04:18 PM
Transmission Line for or against? DJ Sense Full Range 5 10th June 2006 08:35 AM
Transmission Line ADD ONS caratje Subwoofers 10 4th January 2006 09:49 AM

New To Site? Need Help?

All times are GMT. The time now is 03:06 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