Air Motion Transformers (Heil's) and New Diaphragms - Page 2

EchoWars · 12th February 2003, 04:24 AM

I had a buddy who worked there in the late 70's. He is actually the one who suggested I get the studio monitors that they had after he put a couple of the small Heil's into his AMC Pacer. Sounded great, I was hooked. Bought the Heil's and have considered my midrange and high-end covered ever since, though I have gone through many versions of woofers trying to find a match...

Have crossed mine over at a variety of freq's, and the Dynaudio/Heil combo sounds best letting the Dynaudio's do the work up to 2300 or so (it should, the Dynaudio's were hella expensive).

///kinda suprised anyone remembers Audio Mart from back in the day...

tomtt · 15th February 2003, 12:02 AM

maybe yor buddy did the demo for me
did you see the rtr 25"woofers at mcgee
radio?
seemes like they were 225 each,1986

EchoWars · 16th February 2003, 10:46 AM

RTR woofers? Hmmm...by 1986 I was in Boise, ID. In the 70's the only decent woofers McGee had were Eminence, and they left a bit to be desired.

My buddy was Steve Galpin(sp?) Used to play in a local band, and I ran their sound. He was drummer, about 5'10'' or so, a bodybuilder, and a cool guy. Always wondered what happened to him...

planet10 · 21st April 2003, 04:55 PM

Quote:

Originally posted by AMT-freak
AMT-Freak - enjoys his Heil's down to 800 Hz in a two-way setup

What kind of XO are you usig? I'm looking for a (temporary i hope) passive design somewhere between 800-1.2k.

dave

OliverD · 7th March 2004, 11:43 PM

I was browsing the forum for some information on magnet material in my AMTs just to discover someone asked me a question about my speakers!

Hope you don't mind me taking about a year to reply:

It's an active 24db Linkwitz-Riley XO since the woofers I'm using are great until about 800 Hz but have a large peak soon after 1 kHz, so... Also helps to reduce the load on the AMTs. Finding a low frequency counterpart for these tweeters is a tough job and I've seen many bad sounding speakers (including the original ESS). Having tried many expensive drivers I think you should definitely go two-way and let the AMTs play as low as possible.

Now for something completely different:

Does anybody happen to know what magnets they used in the old AMT-1 (the big ones)? I can only measure dimensions, but what about the material?

RAWDON · 10th December 2004, 04:07 PM

i want to obtain a set of replacement diaphrams for my 1980 vintage ESS AMT MONITORS...WHERE IS THE BEST PLACE TO OBTAIN THEM..have just had the bass units and PASSIVE radiators overhauled..after 25 years of use...
please help someone..

Steve Rawdon
Wellington
New Zealand

Raoul · 14th December 2004, 07:21 AM

Not sure if this is the BEST place to purchase them, but it is A place...

http://cgi.ebay.com/ws/eBayISAPI.dll...sPageName=WD1V

Hope the link works. If not, search ebay for "heil diaphragm". By the way, I have never used them and do not have any information on the differences between the various incarnations of the heil diaphragms. It is a source, though...

RAWDON · 27th December 2004, 03:22 AM

i have just obtained a replacement set of d/phragms from the west coast of the states and they sound just like the originals in my 1980 AMT'S from ESS..I obtained them as spares to my original that still work fine..(all are teflon/mylar units..I cant tell any difference in sound quality..

Steve in nz

EchoWars · 1st January 2005, 10:43 AM

Good to know Steve...thanks!!

Magnetar · 13th January 2005, 12:14 AM

I replaced the old soft diaphagms with the 'new and improved' mylar disasters - the new diaphragms sound terrible in comparison. They have a yellow tint to them and are not soft but hard and brittle - just like they sound.

10th December 2004, 04:07 PM	#16
RAWDON diyAudio Member Join Date: Nov 2004 Location: wELLINGTON NZ	heil diaphrams i want to obtain a set of replacement diaphrams for my 1980 vintage ESS AMT MONITORS...WHERE IS THE BEST PLACE TO OBTAIN THEM..have just had the bass units and PASSIVE radiators overhauled..after 25 years of use... please help someone.. Steve Rawdon Wellington New Zealand

27th December 2004, 03:22 AM	#18
RAWDON diyAudio Member Join Date: Nov 2004 Location: wELLINGTON NZ	new heil diapragms i have just obtained a replacement set of d/phragms from the west coast of the states and they sound just like the originals in my 1980 AMT'S from ESS..I obtained them as spares to my original that still work fine..(all are teflon/mylar units..I cant tell any difference in sound quality.. Steve in nz

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
ESS Heil AMT diaphragms	matt28sr	Planars & Exotics	3	15th December 2006 12:19 PM
heil amt replacement diaphragms	RAWDON	Planars & Exotics	2	9th March 2005 08:20 PM
Has anyone used 'Heil Air Motion' Transducer?	goldyrathore	Multi-Way	13	4th May 2004 04:48 PM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	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

12th February 2003, 04:24 AM	#11
EchoWars diyAudio Member Join Date: Dec 2002 Location: Left of the Dial	I had a buddy who worked there in the late 70's. He is actually the one who suggested I get the studio monitors that they had after he put a couple of the small Heil's into his AMC Pacer. Sounded great, I was hooked. Bought the Heil's and have considered my midrange and high-end covered ever since, though I have gone through many versions of woofers trying to find a match... Have crossed mine over at a variety of freq's, and the Dynaudio/Heil combo sounds best letting the Dynaudio's do the work up to 2300 or so (it should, the Dynaudio's were hella expensive). ///kinda suprised anyone remembers Audio Mart from back in the day...

15th February 2003, 12:02 AM	#12
tomtt diyAudio Member Join Date: Aug 2002 Location: kansas city mo, and on occasion, around the world ... Blog Entries: 15	maybe yor buddy did the demo for me did you see the rtr 25"woofers at mcgee radio? seemes like they were 225 each,1986

16th February 2003, 10:46 AM	#13
EchoWars diyAudio Member Join Date: Dec 2002 Location: Left of the Dial	RTR woofers? Hmmm...by 1986 I was in Boise, ID. In the 70's the only decent woofers McGee had were Eminence, and they left a bit to be desired. My buddy was Steve Galpin(sp?) Used to play in a local band, and I ran their sound. He was drummer, about 5'10'' or so, a bodybuilder, and a cool guy. Always wondered what happened to him...

7th March 2004, 11:43 PM	#15
OliverD diyAudio Member Join Date: Nov 2002 Location: Germany	I was browsing the forum for some information on magnet material in my AMTs just to discover someone asked me a question about my speakers! Hope you don't mind me taking about a year to reply: It's an active 24db Linkwitz-Riley XO since the woofers I'm using are great until about 800 Hz but have a large peak soon after 1 kHz, so... Also helps to reduce the load on the AMTs. Finding a low frequency counterpart for these tweeters is a tough job and I've seen many bad sounding speakers (including the original ESS). Having tried many expensive drivers I think you should definitely go two-way and let the AMTs play as low as possible. Now for something completely different: Does anybody happen to know what magnets they used in the old AMT-1 (the big ones)? I can only measure dimensions, but what about the material?

14th December 2004, 07:21 AM	#17
Raoul diyAudio Member Join Date: Feb 2003 Location: OR	Not sure if this is the BEST place to purchase them, but it is A place... http://cgi.ebay.com/ws/eBayISAPI.dll...sPageName=WD1V Hope the link works. If not, search ebay for "heil diaphragm". By the way, I have never used them and do not have any information on the differences between the various incarnations of the heil diaphragms. It is a source, though...

1st January 2005, 10:43 AM	#19
EchoWars diyAudio Member Join Date: Dec 2002 Location: Left of the Dial	Good to know Steve...thanks!!

13th January 2005, 12:14 AM	#20
Magnetar Banned Join Date: Feb 2004 Location: Portal 2012	I replaced the old soft diaphagms with the 'new and improved' mylar disasters - the new diaphragms sound terrible in comparison. They have a yellow tint to them and are not soft but hard and brittle - just like they sound.