Beyond the Ariel - Page 907 - diyAudio
Go Back   Home > Forums > Loudspeakers > Multi-Way

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
Reply
 
Thread Tools Search this Thread
Old 9th July 2013, 08:50 PM   #9061
ra7 is offline ra7  United States
diyAudio Member
 
Join Date: Feb 2009
Blog Entries: 1
I did a comparison of four 1" drivers, B&C DE250, BMS 4554, Radian 475PB, and DNA350 on a SEOS-18 horn over at avs:
1 inch CD Comparison (SEOS18)

The BMS 4550 and B&C DE250 were pretty good. I measured Erich's DNA350 thinking it was the DNA360 (hey, they don't have a label and look the same ). I have since bought a pair of the DNA360s and they are identical to the DE250s. Measurements of the DNA360 should be up soon.

Anyway, the point is the Radian was pretty ragged. The graphs on Radian's website are super-smoothed and don't give an idea of what the real response looks like. The raggedness might well have been a mismatch between exit angles, but for the SEOS-18 at least, it was not the right driver.

Last edited by ra7; 9th July 2013 at 08:53 PM.
  Reply With Quote
Old 9th July 2013, 09:02 PM   #9062
limono is offline limono  United States
diyAudio Member
 
Join Date: Mar 2007
[QUOTE=Kindhornman;3555148]marco_gea,
I'm in agreement that a TAD ET-703 is a great driver but at the same time the price has gotten crazy. I bought a pair at one time from TAD for less than $500.00 so the profit margin is astronomical now. This is my target device with the beryllium dome tweeter I am working on building.

well ,when was it, 30 years ago ? I don't recall times when diaphragms for jbl drivers were cheaper than $150 each and you got a pair of cobalt magnet berylium drivers for less than $500
Et 703 makes sense only in tandem with other tad driver like 4001 , 2001 .
tad 2001 high frequency is not very interesting , some say 4001 is breaking in more elegant fashion than 2001 but 4001 upper mid is unbearable thats why it's a better idea to cross 2001 over 4001 and than ad et 703 to keep the sound uniform. Fostex t500mkIII will be a better choice in different configurations. It does have distinct warm coloration which is extremely pleasant but not quite neutral. Lowther in 200hz Azura gives instant gratifications , kills 90% of high end available in stores at any price and its easy to implement . Of course you need competent low end which is a subject on it's own
  Reply With Quote
Old 9th July 2013, 09:38 PM   #9063
diyAudio Member
 
buzzforb's Avatar
 
Join Date: Oct 2010
Location: Burlington, NC
I have had my eye on this as possibility.
Faital Pro FD371 - Faital Pro FD371 ferrite high frequency supertweeter. Faital Pro FD371 supertweeter available here at US Speaker.
__________________
...Shape the sound , Man!
  Reply With Quote
Old 9th July 2013, 09:42 PM   #9064
diyAudio Member
 
Kindhornman's Avatar
 
Join Date: Aug 2012
Location: Los Angeles, California
Limono,
I happened to know the TAD sales rep at the time and I am sure I didn't even pay $500.00 for the pair, that was the wholesale price at the time and this was for brand new drivers. There is a huge profit margin on their devices, they actually tried at one time to discontinue the entire line. A threat of a lawsuit ensued due to the installed professional studio base that was pissed they wouldn't have any replacement diaphragms. This is when they decided to keep the line going and massively increase the prices. That is why they cost what they do today, real story.

ps. Sold a system back then about 1993? with a 10" down firing driver, 8" front firing driver, 6 1/2" horn loaded mid, Tad 2001 and TAD ET-703 in Rosewood cabinets for $5,000 and made money! Times have changed haven't they!

Last edited by Kindhornman; 9th July 2013 at 09:46 PM.
  Reply With Quote
Old 9th July 2013, 09:48 PM   #9065
Pano is offline Pano  United States
diyAudio Moderator
 
Pano's Avatar
 
Join Date: Oct 2004
Location: Milliways
Blog Entries: 4
Quote:
Originally Posted by Capt Grogg View Post
which "old Radian" drivers do you have?
Seems I have a pair of model 4735. I suspect they are early, as only one has the model number and they are serial numbers 1006 & 1009. They look a lot like the current models.
__________________
Take the Speaker Voltage Test!
  Reply With Quote
Old 9th July 2013, 09:53 PM   #9066
Pano is offline Pano  United States
diyAudio Moderator
 
Pano's Avatar
 
Join Date: Oct 2004
Location: Milliways
Blog Entries: 4
Quote:
Originally Posted by Kindhornman View Post
....in Rosewood cabinets for $5,000 and made money!
About $8000 in today's currency.
  Reply With Quote
Old 9th July 2013, 09:58 PM   #9067
diyAudio Member
 
Kindhornman's Avatar
 
Join Date: Aug 2012
Location: Los Angeles, California
Pano,
Couldn't even consider it today with the cost of TAD drivers alone....... And just try and get the rosewood these days.......... Still have at least a pair of the cabinets with no drivers inside in Rosewood. They sounded awesome! 20hz to 24khz.
  Reply With Quote
Old 9th July 2013, 10:09 PM   #9068
diyAudio Member
 
Join Date: Aug 2009
I would guess the Radian 4735 are 1.4in and the 4750 2in throat, otherwise similar 3in VC drivers
  Reply With Quote
Old 9th July 2013, 10:36 PM   #9069
g3dahl is offline g3dahl  United States
diyAudio Member
 
g3dahl's Avatar
 
Join Date: Jun 2004
Location: Silverdale, WA
Below is what I got with a Radian 745pb on the Azurahorn AH-425, which I posted three years ago (!) in this thread. Still using the same combo. I would love to try the 745neo with Truextent beryllium diaphragms when they become available, but I'm afraid I'd have to pick the correct Lotto numbers.

Pictures of the project were posted on p. 707 (post 7067 and surrounding neighborhood).

Click the image to open in full size.
__________________
"So many tubes, so little time..."
  Reply With Quote
Old 9th July 2013, 10:49 PM   #9070
ra7 is offline ra7  United States
diyAudio Member
 
Join Date: Feb 2009
Blog Entries: 1
Thanks for that, Gary! Can you show that on a 50db scale? There are some ripples beginning near 4 kHz, but quite smooth overall.

Also, do you have measurements of the finished system? It may have been posted earlier, but I don't recall ever seeing measurements of the finished system.

Last edited by ra7; 9th July 2013 at 10:51 PM.
  Reply With Quote

Reply


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



New To Site? Need Help?

All times are GMT. The time now is 11:33 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2