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

CBT24 line array speakers
CBT24 line array speakers
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 24th August 2017, 02:03 AM   #81
Rick Craig is offline Rick Craig  United States
diyAudio Member
 
Join Date: Sep 2014
Location: Garner,NC
Quote:
Originally Posted by jarvissound View Post
I've not heard the JBL Eon, but I am well versed in the Bose and have owned the K-Array($$$$$) KR systems. They are small and portable, but ignore the elephant in the room, just like all of these systems: **low frequency and mid-bass pattern control**. All I want is a speaker that illuminates a room roughly similar to how a real instrument does. In theatrical sound that is the goal.

Despite Keele's, and other's, claims of broadband pattern control, none of them actually achieve any semblance of pattern control in the lower octaves, vertical or horizontal. In the horizontal, 180 degrees from 600hz up and 360 degrees 600hz down is NOT constant directivity in my book, while the upper octaves are 120 degrees or less. Can you imagine what a sonogram for those looks like? Klingon "Bird of Prey" comes to mind.

Last time I checked there are five octaves between 20hz and 640 hz. That is half of the audible spectrum.

Obviously those of us in PA/Theatrical audio benefit from mid-bass pattern control. Could it be that the holy grail of home audio is an Econowave design with a dipole bass section??? For theatre sound that seems to be the case.

Brett
Yes, the CBT does have horizontal pattern control. Just not the way that it happens with a conventional design.
  Reply With Quote
Old 24th August 2017, 08:39 PM   #82
Andersonix is offline Andersonix  Sweden
diyAudio Member
 
Andersonix's Avatar
 
Join Date: Jan 2004
Location: Marin County, California
CBT24 line array speakers
Quote:
Originally Posted by Omholt View Post
Be aware that the measurements in that review are flawed. They didn't measure correctly.

There were also several wrong facts in the review and they guy who listened didn't even use measurements with integrating a subwoofer. It confirmed all my negative bias towards hifi reviewers.

Anyway, here are proper measurements of the CBT24. Both raw without EQ and one with EQ. Take notice that the resolution of the Y axis is high with 3 dB increments. Measurements were conducted over a reflective floor in a normal room, meaning room modes are included.

Click the image to open in full size.


Pink is with EQ:
Click the image to open in full size.
That Dayton ND64-16 driver is all cone breakup past 6kHz. (Or is it merely internal cavity resonances?) And then it's EQ'd to BOOST the top end? That sure smells like a recipe for sizzling highs to me, or is that what they call "character"?
Attached Images
File Type: png Screen Shot 2017-08-24 at 13.34.28 .png (203.4 KB, 56 views)
  Reply With Quote

Reply


CBT24 line array speakersHide 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
Line Array with Bookshelf Speakers Possible? vokus Multi-Way 16 25th September 2015 06:38 PM
Line array with different FR speakers Calamaro Full Range 0 26th November 2011 02:24 PM
Information Line array speakers for under $40K??? DaveBn Multi-Way 25 25th October 2011 03:36 PM
Speakers for a guitar line array? screamersusa Full Range 5 30th September 2010 02:14 PM
Line Array with these speakers? AudioIsFun Multi-Way 1 11th March 2004 05:24 AM


New To Site? Need Help?

All times are GMT. The time now is 03:31 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