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

To Heil AMT or not to Heil at 0, that is the question?
To Heil AMT or not to Heil at 0, that is the question?
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 28th December 2018, 01:55 PM   #11
ICG is offline ICG  Germany
diyAudio Member
 
ICG's Avatar
 
Join Date: Jul 2007
Location: I had a Dj Moo - I've seen that BS before!
Quote:
Originally Posted by Cask05 View Post
You talk as if you wanted more information, but curiously, you ask in such a way that appears pretentious--and frankly--offensive. Why is that? Have I inadvertently insulted in some way?
I said that your measurements are without significance. And I said why. You seem upset someone noticed that. Why is that?

Quote:
Originally Posted by Cask05 View Post
It is this kind of behavior, i.e., of the type quoted just above by "ICG", that most leaves me wondering why anyone would try to post in this forum.
It's fine if you don't want to learn something. But to post a few measurements without measuring enviroment and hardware used or on which spl the measurements are done doesn't say anything and doesn't help anyone.
__________________
I had a Dj Moo - I've seen that BS before!
  Reply With Quote
Old 28th December 2018, 02:08 PM   #12
wallacefl is offline wallacefl  United States
diyAudio Member
 
Join Date: Apr 2010
There is a post over at the Lansing Forum concerning the Heil with a 12 inch JBl driver. The crossover shown appears to be at about 1200 hz. I am interested as I have some old JBL 123a woofers and may try the woofer high pass out of the JBL S 70 AlphaIII. The FS of the Heil is about 500...so I think an 800 crossover is “pushing it” a bit but somewhere on the net there is a schematic for the Ess Heil Special Edition speaker dated 2013...I do not have any measuring equipment or design experience so I will just follow along.
  Reply With Quote
Old 28th December 2018, 03:11 PM   #13
uraberg is offline uraberg  United States
diyAudio Member
 
Join Date: Apr 2017
Tempting. I think my pa310's can be crossed at ~1.2k ish....
  Reply With Quote
Old 28th December 2018, 03:34 PM   #14
sumotan is offline sumotan  Indonesia
diyAudio Member
 
Join Date: Oct 2013
Hi Guys
Noticed that ESS has a AMT lll which is about half height , does anyone
have experience with this & how does it sound compared to original AMT ?

Thks
  Reply With Quote
Old 28th December 2018, 03:39 PM   #15
Bill poster is offline Bill poster  Thailand
diyAudio Member
 
Bill poster's Avatar
 
Join Date: Jun 2008
Location: Bangkok/London
Yeah I'm curious about that half height one too

Seriously I'd be wondering why the manufacturer is selling off everything at one 3rd price.. pay with bank card etc to protect yourself
  Reply With Quote
Old 29th December 2018, 02:53 PM   #16
sumotan is offline sumotan  Indonesia
diyAudio Member
 
Join Date: Oct 2013
Thks Bill for the advice. I would expect the half size version to be cheaper
though. Lol
  Reply With Quote
Old 29th December 2018, 10:45 PM   #17
plasnu is offline plasnu  United States
diyAudio Member
 
Join Date: Jan 2011
Location: NY USA
I'm also interested.
How about the consistency of the unit?
I mean the quality control of ESS.
  Reply With Quote
Old 30th December 2018, 11:18 PM   #18
Robh3606 is online now Robh3606  United States
diyAudio Member
 
Robh3606's Avatar
 
Join Date: Nov 2002
Location: Destiny
"There is a post over at the Lansing Forum concerning the Heil with a 12 inch JBl driver."

Hello

I am the op on that thread and ESS used an 18db network with the original driver with an 800Hz crossover point. To build your speaker you are going to need driver measurements from your designed listening point with the drivers in the actual enclosure you plan on using so basically you bass driver in it's box with the Heil on top as an example. If you go passive you are going to need a notch filter to help smooth out the 5K peak and pay particular attention to the impedance. As an example here is an 18db network with a notch and an active 24db network with a notch.

Rob
Attached Images
File Type: jpg Active Schematic 24dB.JPG (178.5 KB, 241 views)
File Type: jpg 24dB L-R with Comp.JPG (159.5 KB, 242 views)
File Type: jpg Heil Frequency Response.JPG (163.0 KB, 244 views)
File Type: jpg Heil Imp.JPG (133.6 KB, 242 views)
File Type: jpg Active 24.JPG (125.2 KB, 235 views)
File Type: jpg Heil Voltage Drive.JPG (152.4 KB, 47 views)
__________________
"I could be arguing in my spare time"

Last edited by Robh3606; 30th December 2018 at 11:22 PM.
  Reply With Quote
Old 30th December 2018, 11:24 PM   #19
sumotan is offline sumotan  Indonesia
diyAudio Member
 
Join Date: Oct 2013
Thank Rob,
May I ask in ESS web you see an original AMT & AMT ll. What’s the difference between them ?

Thks
  Reply With Quote
Old 31st December 2018, 08:42 AM   #20
xrk971 is offline xrk971  United States
Got Foam?
diyAudio Member
 
xrk971's Avatar
 
Join Date: Oct 2012
Location: Metro DC area
To Heil AMT or not to Heil at 0, that is the question?
Quote:
Originally Posted by chrisb View Post
dtaylo3, that certainly represents a pretty steep discount over their normal prices - hopefully not a portent. As Patrick noted, with all the competition in this class of driver, maybe ESS was stuck with an abundance of stale inventory that the bean counters/ bankers advised to write down?
Ive used original production AMT1s on a couple of projects, and they are still among my favorite tweeters, but Id certainly need ICGs cautions.
One of my favorite sounding tweeters too. Very natural. So natural that a neat effect is that it sounds like the singer has been shrunken and is living in your tweeter if you just hold the tweeter and listen to it close up.
__________________
XRKaudio https://www.etsy.com/shop/XRKAudio
  Reply With Quote

Reply


To Heil AMT or not to Heil at 0, that is the question?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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
ESS Heil AMT Question maLx Planars & Exotics 16 25th June 2018 05:20 AM
ESS AMT Heil Monitors with Heil Tweeter erik777 Planars & Exotics 3 4th November 2014 09:37 PM
HEIL amt & audax midrange (open baffle question) bytelight Multi-Way 3 9th February 2012 09:43 AM
Heil XO Ang Planars & Exotics 2 9th April 2007 09:47 PM
Heil help whatsnext Planars & Exotics 6 22nd September 2006 07:22 PM


New To Site? Need Help?

All times are GMT. The time now is 04:00 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 14.29%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Copyright ©1999-2019 diyAudio
Wiki