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

Multi-Way Conventional loudspeakers with crossovers

Direct/Reflecting loudspeakers
Direct/Reflecting loudspeakers
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 1st July 2001, 03:06 AM   #1
Rory is offline Rory
diyAudio Member
Join Date: Jun 2001
Send a message via AIM to Rory
Does anybody know how Bose does that Direct/Reflecting thing on the 802 and 901 speakers? Wouldn't they have to be placed a specific distance from walls to have the right effect? Or does it matter?
  Reply With Quote
Old 1st July 2001, 03:35 AM   #2
Rory is offline Rory
diyAudio Member
Join Date: Jun 2001
Send a message via AIM to Rory
Default Here's how it's done

I guess I spoke too soon. I went to the Bose web site and leard the secret to effective Direct/Reflecting speakers. The sound comes from these irregular-pentagonal enclosures which which have 8 or 9 drivers in the back, and 1 or 2 in the front. This is because Bose research has found that concert hall music is only 11% directly at you, and 89% away from you. So if you can build speakers that produce sound at an 8:1 or 9:1 ratio (9 reflected:1 direct), theoretically, you can produce the sound as it would come from an instrumentalistint he concert hall. That's the inspiration for the Bose speakers.
  Reply With Quote
Old 1st July 2001, 04:37 AM   #3
GRollins is offline GRollins  United States
diyAudio Member
Join Date: Feb 2001
Location: Columbia, SC
The problem with the Bose direct/reflecting concept is that it's a solution in search of a problem. The result is not unlike adding a (short period) reverb unit to your system--sure, you can do it--but who'd want to?
Note that not one other company has made any effort to copy any of the ideas that Bose has come up with. It's not because of patents, as there's always a way around patents if you try hard enough, it's because there's no point in doing so. Amar (I think that's his first name--it's been a while) Bose's genuis lies not in audio innovation, but in marketing...

  Reply With Quote
Old 1st July 2001, 11:20 AM   #4
Sawzall is offline Sawzall
diyAudio Member
Join Date: Jun 2001
Location: Alexandria, VA USA
Default Or to put it another way...

The direct/reflecting issue is this. While it may be true that reflection makes up a large percentage of the actual noise we hear, several other issues make that actual percentage moot.

First, if mikeing a show, the microphone "hear" both. Accuratly reproducing both is the goal, not adding even more reflections. Your stereo pair try to mimic the mics.

Secondly, and even more difficult to deal with, is your brain. It does not process everything that comes to it. Some is rjected by your ears themselves, other bits by the brain. The whole science of perception is a study of this.

So to me, if Bose could know what your brain does with a set of pressure levels, he might have a shot. As it is, he just seems to be adding noise. It may be pleasent noise to some, but not me.
  Reply With Quote
Old 1st July 2001, 02:07 PM   #5
grataku is offline grataku  United States
diyAudio Member
Join Date: Dec 2000
Location: -
Bose is low-fi crap and should not be discussed in any way shape or form. End of thread.
  Reply With Quote
Old 14th July 2001, 02:16 PM   #6
Matthew is offline Matthew
diyAudio Member
Join Date: Mar 2001
Location: Louth, Ireland
Send a message via ICQ to Matthew
bose are the biggest rip off out there, dont let them influence you by marketing techniques. think about it, theyre little cube speaker things, are about $150 each right, the drivers in them are worth about $3 because theyre only cheap cone tweeters!
  Reply With Quote
Old 14th July 2001, 02:37 PM   #7
jam is offline jam  United States
diyAudio Member
jam's Avatar
Join Date: May 2001
Location: Auburn, CA, USA
Thumbs down No Highs, No Lows It must be Bose!


You said it. Take a look inside a Bose speaker and all will be revealed.

I am with Grataku, let us end this thread.

  Reply With Quote


Direct/Reflecting loudspeakersHide 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
Direct (or almost direct) replacement for Morel MW144? mr_push_pull Multi-Way 1 19th April 2009 04:43 PM
40% Tap direct to plate GlidingDutchman Tubes / Valves 9 12th July 2008 09:15 PM
Direct/reflecting jmar Full Range 3 15th December 2007 07:16 PM
Direct to PCB printing.. cuibono Parts 0 24th July 2007 01:33 AM

New To Site? Need Help?

All times are GMT. The time now is 04:20 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