Aurum Cantus or Raven? - Page 3 - 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 21st October 2005, 07:45 PM   #21
frugal-phile(tm)
diyAudio Moderator
 
planet10's Avatar
 
Join Date: Oct 2001
Location: Victoria, BC, NA, Sol III
Blog Entries: 5
Quote:
Originally posted by one1speed
It seems the Heils are not that efficient. How do you deal with the difference of them being 4 ohms and only 93 db? I'd imagine the Corals are much more efficient.
We measured the Heils at over 100 dB (and the padding needed to match them to the push-push pair of 92 dB Fostex confirms that....

Old ones seem fine, but when you can buy a new pair for the same kinda price (AMT had some up on eBay for $300/pr)... it will be interesting to see what one1speed gets in reply.

dave

PS: excuse the Excel charts (Excel is just so clunky)
Attached Images
File Type: gif heilfr.gif (33.3 KB, 692 views)
__________________
community sites t-linespeakers.org, frugal-horn.com, frugal-phile.com ........ commercial site planet10-HiFi
p10-hifi forum here at diyA
  Reply With Quote
Old 21st October 2005, 07:46 PM   #22
frugal-phile(tm)
diyAudio Moderator
 
planet10's Avatar
 
Join Date: Oct 2001
Location: Victoria, BC, NA, Sol III
Blog Entries: 5
and here are pics of the Heil/Fostex i was referring to.
Attached Images
File Type: jpg heil-fostex-incherry.jpg (44.6 KB, 708 views)
  Reply With Quote
Old 21st October 2005, 07:48 PM   #23
frugal-phile(tm)
diyAudio Moderator
 
planet10's Avatar
 
Join Date: Oct 2001
Location: Victoria, BC, NA, Sol III
Blog Entries: 5
and an earlier set of 3-way (eminance mid, and original alnico AMT woof/PR)
Attached Images
File Type: jpg heil_3way.jpg (87.5 KB, 676 views)
  Reply With Quote
Old 21st October 2005, 08:30 PM   #24
diyAudio Member
 
Join Date: Jan 2005
Location: Ohio
Dave

Thanks for the picts. I did hear back from Heil and they are saying $300 plus shipping/taxes for a pair. Not bad. Expecially considering the quality everyone speaks of. My only issue is that if I go in that direction, I need to find a way to mount them on an open baffle. Any thoughts?

Layne
  Reply With Quote
Old 21st October 2005, 08:58 PM   #25
frugal-phile(tm)
diyAudio Moderator
 
planet10's Avatar
 
Join Date: Oct 2001
Location: Victoria, BC, NA, Sol III
Blog Entries: 5
Quote:
Originally posted by one1speed
I need to find a way to mount them on an open baffle. Any thoughts?
A hole with a "shelf"?

dave
__________________
community sites t-linespeakers.org, frugal-horn.com, frugal-phile.com ........ commercial site planet10-HiFi
p10-hifi forum here at diyA
  Reply With Quote
Old 21st October 2005, 09:22 PM   #26
diyAudio Member
 
Join Date: Jan 2005
Location: Ohio
i had thought of that as well. have to admit, i don't love the idea. it seems from most of the mountings i've seen, including your picts, the front of the tweeter box is sitting in line with the driver/baffle. this would actually put the ribbon portion of the tweeter behind the baffle, which i'm guessing is not a good thing. i had wanted to mount the tweeter below the full ranger. i could sit it on the bass box, but it still would sit back too far i'd think.

maybe a small shelf could be built above the full ranger? but then i'd want it to sit close to the full ranger. i'm not sure this can work for this. would be tough to get it to work i'd think...
  Reply With Quote
Old 22nd October 2005, 12:15 AM   #27
BTW is offline BTW
diyAudio Member
 
Join Date: Nov 2002
Location: Singapore
Quote:
Originally posted by one1speed
One more question, if you don't mind. It seems the Heils are not that efficient. How do you deal with the difference of them being 4 ohms and only 93 db? I'd imagine the Corals are much more efficient.

Thanks!
The AMTs by itself is 100 dB so , the Corals are at 95 dB and I actually need to use an L pad on the AMTs as they are more efficient than the Corals.
  Reply With Quote
Old 22nd October 2005, 03:40 AM   #28
frugal-phile(tm)
diyAudio Moderator
 
planet10's Avatar
 
Join Date: Oct 2001
Location: Victoria, BC, NA, Sol III
Blog Entries: 5
Quote:
Originally posted by one1speed
this would actually put the ribbon portion of the tweeter behind the baffle
However it is mounted. i think i'd try getting the central part of the ribbon flush with the baffle.

dave
__________________
community sites t-linespeakers.org, frugal-horn.com, frugal-phile.com ........ commercial site planet10-HiFi
p10-hifi forum here at diyA
  Reply With Quote
Old 22nd October 2005, 12:06 PM   #29
diyAudio Member
 
ralphs99's Avatar
 
Join Date: Jul 2006
You could also consider the Eton ER4 which is a similar technology to the Heils, I believe.
I'm always a bit wary of putting down my hard earned for something that doesn't come well documented. In that respect the AC G2Si has been thoroughly tested. Check out:

http://206.13.113.199/ncdiyaudio/mar...st_results.htm

I'm in the middle of a new design at the moment. As part of the project I am trying out an Eton ER4 and will also be evaluating an AC 2Gsi and Raven R2 when they finally arrive.

My inital impressions of the ER4 are mostly positive. Smooth & detailed. Low efficiency, hard to mount and a rising response that needs some EQ. I'm currently struggling with it's dipole nature and the effect that has on the power response. More work is needed here.

I can send some FR plots of the ER4 if you're keen.

Cheers,
Ralph
  Reply With Quote
Old 22nd October 2005, 07:27 PM   #30
Illusus is offline Illusus  Canada
diyAudio Member
 
Illusus's Avatar
 
Join Date: Sep 2002
Location: Prairie Wasteland, Canada
The Eton AMT's price is double of the Heil and looks considerably less impressive, if that means anything. The Eton's efficiency is pretty low at 88db, not really what Speed is looking for.There's also the Mundorf AMT but its price is even higher (~$400 for a 2340) and efficiency only marginally better at 90db for the lower priced models; 104db for the rest; HF extension is lacking when compared to most super tweeters.
I'd take the Heil over other AMTs due to it's proven, well documented and impressive performance. My view may be coloured by a few years of lusting after a pair, now that I know they're still available at a relatively low price I'll be buying a pair in the near future, I'm not bound by the mounting issue that Layne is...anyone want to trade for a hardly used pair of OEM G3's ?
__________________
Fighting the program since 1976.
  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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Aurum Cantus G1 tolits Multi-Way 0 10th August 2009 01:23 AM
Hp Aurum Cantus fiscal Multi-Way 14 25th March 2009 10:28 PM
Aurum Cantus mandoman Multi-Way 35 21st August 2007 02:21 AM
Which brands and models use RAVEN, Aurum Cantus or ER4 from Eton Adrie Multi-Way 4 30th April 2004 04:41 PM


New To Site? Need Help?

All times are GMT. The time now is 09:27 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