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

And Now For Something REALLY BIG
And Now For Something REALLY BIG
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 October 2012, 10:18 PM   #481
buzzforb is offline buzzforb  United States
diyAudio Member
 
buzzforb's Avatar
 
Join Date: Oct 2010
Location: Burlington, NC
Thank you for the correction. They are indeed sectoral.
__________________
...Shape the sound , Man!
  Reply With Quote
Old 27th October 2012, 10:57 PM   #482
JRKO is offline JRKO
diyAudio Member
 
JRKO's Avatar
 
Join Date: Dec 2003
Location: U.K.
Send a message via AIM to JRKO
Quote:
Originally Posted by buzzforb View Post
Consider though, a light cone and a strong magnet
From reading that Adire paper thread I linked to earlier "Transient response is NOT acceleration; rather, it is the rate of change of acceleration (defined at the jerk force, measured in units of Stapps). Acceleration is SPL - the higher your acceleration, the louder you are.................Anyway, in a driver what limits how fast you can change your acceleration (rate of change of acceleration is the jerk force) is the inductance. That's what limits your transient response. Mass really has nothing to do with transient response. Only efficiency...................Efficiency is affected via mass changes, but transient response is not"


Quote:
Originally Posted by Pano View Post
More cells = more better, in my book. At least for typical domestic listening.
Given the choice between multi-cell and "One Hole" horns, I've made my choice.
so 15 would be better than 8?

Pano, please san I ask for your reasoning (in detail if pos.) why you feel/think that way and made that choice. I very much respect your opinion & knowledge
__________________
If I'm not making noise, I'm making something to make noise
  Reply With Quote
Old 27th October 2012, 11:05 PM   #483
buzzforb is offline buzzforb  United States
diyAudio Member
 
buzzforb's Avatar
 
Join Date: Oct 2010
Location: Burlington, NC
Quote:
Originally Posted by JRKO View Post
From reading that Adire paper thread I linked to earlier "Transient response is NOT acceleration; rather, it is the rate of change of acceleration (defined at the jerk force, measured in units of Stapps). Acceleration is SPL - the higher your acceleration, the louder you are.................Anyway, in a driver what limits how fast you can change your acceleration (rate of change of acceleration is the jerk force) is the inductance. That's what limits your transient response. Mass really has nothing to do with transient response. Only efficiency...................Efficiency is affected via mass changes, but transient response is not"
Then you should get the TD15m. It has light cone, high efficiecny, and Le better than any others @.2mH. That is 25% of most others you have looked at or talked about. It also has light cone.
__________________
...Shape the sound , Man!
  Reply With Quote
Old 27th October 2012, 11:11 PM   #484
JRKO is offline JRKO
diyAudio Member
 
JRKO's Avatar
 
Join Date: Dec 2003
Location: U.K.
Send a message via AIM to JRKO
holy cow 0.2mH? It'd kill you if you just thought about music, let alone play it!!
__________________
If I'm not making noise, I'm making something to make noise
  Reply With Quote
Old 28th October 2012, 01:51 AM   #485
Pano is offline Pano  United States
diyAudio Moderator
 
Pano's Avatar
 
Join Date: Oct 2004
Location: SW Florida
And Now For Something REALLY BIG
I think more cells = better because that's what I've heard. Not what someone told me, what I've really heard. I've heard the multis from 2 to 18 cells. More always seemed better to me. Bigger, more open, more real. That said, the 1005 and 1505 may be the practical limits for home use.
__________________
Take the Speaker Voltage Test!
  Reply With Quote
Old 28th October 2012, 01:33 PM   #486
JRKO is offline JRKO
diyAudio Member
 
JRKO's Avatar
 
Join Date: Dec 2003
Location: U.K.
Send a message via AIM to JRKO
As for placement/aim of the multicellular horn - do you fire them straight forwards, down the room? Or toe the in so the centre is aimed at the listener?
__________________
If I'm not making noise, I'm making something to make noise
  Reply With Quote
Old 28th October 2012, 04:09 PM   #487
Pano is offline Pano  United States
diyAudio Moderator
 
Pano's Avatar
 
Join Date: Oct 2004
Location: SW Florida
And Now For Something REALLY BIG
Both work - it may be room dependent. Currently mine are pointed straight at me. That could change in a different room.
  Reply With Quote
Old 29th October 2012, 06:47 PM   #488
JRKO is offline JRKO
diyAudio Member
 
JRKO's Avatar
 
Join Date: Dec 2003
Location: U.K.
Send a message via AIM to JRKO
Thanks Pano. I've asked the ebay guy about the cell terminations and I'l let you know what he says. Here's a pic the maker sent me of an 18 cell version.
Attached Images
File Type: jpg Multicell_Fundamental_5 (2).JPG (616.0 KB, 352 views)
__________________
If I'm not making noise, I'm making something to make noise
  Reply With Quote
Old 29th October 2012, 07:17 PM   #489
JRKO is offline JRKO
diyAudio Member
 
JRKO's Avatar
 
Join Date: Dec 2003
Location: U.K.
Send a message via AIM to JRKO
Wow he was quick!!

"Because of the widening of the of the entrance it keeps all the 15 appertures the same area never thought about it before. they could be tapered if you prefer that would give the outside 6 cell slightly more area"

I guess he means widening at the external cells. I think its because his cells start from a flat plane rather than radiating out, as if from a central point.

What thinks you?
__________________
If I'm not making noise, I'm making something to make noise
  Reply With Quote
Old 29th October 2012, 08:12 PM   #490
JRKO is offline JRKO
diyAudio Member
 
JRKO's Avatar
 
Join Date: Dec 2003
Location: U.K.
Send a message via AIM to JRKO
Just thinking on the above, doesn't that mean the outside are a different length to the rest?
__________________
If I'm not making noise, I'm making something to make noise
  Reply With Quote

Reply


And Now For Something REALLY BIGHide 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
Transformers: How big is TO big?? dfdye Power Supplies 39 4th September 2010 03:30 PM
Big Toroids & Big Caps K-amps Swap Meet 10 25th June 2009 08:43 PM
Having problems with port size... how big is far too big? fjhuerta Multi-Way 10 30th August 2005 07:20 PM
Big Big hum ??? vlljpior Tubes / Valves 4 26th August 2005 04:53 AM


New To Site? Need Help?

All times are GMT. The time now is 05:45 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio
Wiki