Hi-vi B3s mounting - 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 14th October 2005, 01:42 PM   #1
kenp3 is offline kenp3  Canada
diyAudio Member
Join Date: Oct 2005
Default Hi-vi B3s mounting

I'm thinking of building a line array using these drivers. My question is would it be ok to mount them on the back of the front baffle and round over the front edge or would it be best to flush mount them on the front of the baffle.
  Reply With Quote
Old 15th October 2005, 02:11 PM   #2
diyAudio Member
Join Date: Apr 2004
Location: U.S.A.
it seens like it would be much better to flush mount them on the baffle...

doing a roundover seems as though it would horn load the speaker slightly...
  Reply With Quote
Old 17th October 2005, 02:34 AM   #3
tade is offline tade  United States
diyAudio Member
Join Date: Feb 2005
Location: Ralieigh nc
Send a message via AIM to tade
what is with the elipses...

Horn loading would serve to increase the efficiency in a certain area? This would manifest itself as a hump in the response?

A good compromise might be to sink them into the baffle. Sounds like you have a router already. i flushmount because i use a jigsaw to make holes. Ugly holes. : )

by the way, i like these drivers. I have a pair of B4Ns and i abuse the hell out of them. Be careful with the coan though, i dropped a screwdriver on mine and sratched it a little bit.
  Reply With Quote
Old 17th October 2005, 11:09 AM   #4
diyAudio Member
bobhayes's Avatar
Join Date: Sep 2004
Location: Bungawalbyn, NSW
The difference in response due to mounting the drivers on the back of the panel as opposed to the front would be negligible.
The peaks and troughs in the actual driver response (measured in an anechoic environment) would be far greater than any artifacts caused by the hole, especially if it's rounded over. Room acoustics make it even worse so I shouldn't worry about it.
Mount them flush if you think you can make a tidy job, if not then it won't make much difference to the sound if you mount them from the back.
  Reply With Quote
Old 17th October 2005, 12:24 PM   #5
kenp3 is offline kenp3  Canada
diyAudio Member
Join Date: Oct 2005
Default Something else I thought of

Thanks for the responses. Another question would be how much will the efficiency of the drivers increase? These are rated at 81 db spl would this increase if say 10 drivers were run in series/parallel?
  Reply With Quote
Old 18th October 2005, 02:02 AM   #6
diyAudio Member
bobhayes's Avatar
Join Date: Sep 2004
Location: Bungawalbyn, NSW
As far as I know, the sensitivity should be the same as for a single driver, however, line arrays will sound louder when further away compared to a single driver.

The reason is that a single point source SPL drops off at a rate of distance from the speaker to the power 3 because it fires in all directions.

A tall line array's SPL (floor to ceiling) will fall off at around distance to power 2. If you think about the sound eminating from the array, the row of speakers have to cover less volume per unit. Another benefit of this arrangement is an increased 'sweet spot'. I.e. the stereo image will be audible over a wider area than a point source, and you'll find them used in movie theatres.

A 'wall' array falls off even less (hence the popularity of four square guitar speakers). But these won't give a clear stereo image, so you don't see 'em used for hi fi.

Because of the 'projecting' nature of line arrays, you see them a lot in churches and conference halls etc.

Good luck with the project.
  Reply With Quote
Old 18th October 2005, 03:33 AM   #7
diyAudio Member
Join Date: Jun 2003
Location: Tennessee
Default Line Array Stuff Explained

Try my white paper for details on line arrays. With N drivers arrayed you'll get 10 log (N) array gain or 10 dB for 10 drivers. The overall sensitivity would be 81 + 10 = 91 dB SPL. See the white paper for caveats and additional details.

Near Field Line Array White Paper
  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
pcb mounting space-cake Everything Else 3 18th September 2006 01:36 AM
what is the mounting depth and mounting diameter of this? lemans23 Multi-Way 2 26th October 2005 10:52 PM
PCB mounting pjanda1 Chip Amps 1 3rd May 2005 09:31 PM
Mounting TO-3s Devil_H@ck Parts 7 30th March 2004 08:19 PM

New To Site? Need Help?

All times are GMT. The time now is 11:27 AM.

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