ESS AMT 4 Upgrades - diyAudio
Go Back   Home > Forums > Loudspeakers > Planars & Exotics

Planars & Exotics ESL's, planars, and alternative technologies

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 20th December 2008, 04:51 PM   #1
diyAudio Member
 
Join Date: Dec 2008
Default ESS AMT 4 Upgrades

Hello Everybody!

I recently found a pair of ESS AMT 4 speakers for dirt cheap. Hooked them up and was stunned at how good they sounded. I feel like I've become a music lover again instead of an audiophile! My expensive Thiel speakers are now in storage. The AMT- 4's have a single Heil driver and one 10" paper cone woofer.

An audio repair shop that I deal with told me that they could modify the speakers by doing the following:
1- Dampen the insides of the cabinets with some sort of special paint but keep the poly/cotton material that's in them now.
2- Replace the internal wiring with Analysis-Plus wire.
3- Replace all crossover caps with Mundorf's.
4- Change the single binding posts to double posts and bi-wire.

I'm basically very happy with the sound of these speakers, even the paper woofer. The above seems like a logical way of upgrading them without getting into new woofers and custom crossovers, but I would not necessarily be opposed to that. I read somewhere that ESS is now using Eichmann Wire in their new mega-buck offerings, so perhaps that may be an option. I live near Cleveland Ohio so if anybody knows of a good speaker repair shop within a reasonable driving distance that specializes in this type of work please let me know.

My current set up is:
Well Tempered Turntable, Audio Research phono pre(Tube), Audio ResearchZ(solid state)pre, a cheap CD player w/ outboard DA, a big Krell 300cx, older MIT wires.

Thanks in advance for your input.

Steve
  Reply With Quote
Old 22nd December 2008, 02:50 PM   #2
diyAudio Member
 
Join Date: Aug 2004
Location: Italy
Hi Steve,

IMO I would be check if the original coils was iron core. In positive case
upgrade with big air core type.
I'm not sure Mundorf is the best for the AMT ; maybe a paper in oil capacitor can be more sinergycal.
Do not know that particular wires you have mentioned but I think
normal copper solid core ( one conductor, no multiconductors) is ideal for AMT.
Resistor in series with AMT also is important. Do not use metal oxide or similar; Mills are fine with AMT imo.
Biamping seems to me appropriate : solidstate on the bass and tubes
on the AMT

Cheers,
Paolo
  Reply With Quote
Old 23rd December 2008, 12:30 AM   #3
diyAudio Member
 
Join Date: Dec 2008
Thanks for your input Paolo. I know what you mean about those caps- just because they are high quality doesn't mean that the are the best choice for a particular application. I will also look into the type of coils and heed your advise about the resistors. I really appreciate you taking the time to comment.
Steve
  Reply With Quote
Old 23rd December 2008, 09:54 AM   #4
diyAudio Member
 
Join Date: Aug 2004
Location: Italy
It's a pleasure , Steve.
To be totally honest, I'm searching to learn english, just a bit, and since my passion is speaker ( also amps,and sources and ....) this is the only method I am "forced" to practice myself!
I assicure you my skills in audio is much better than my english!

I was a true fanatic of Heil's when I was young. I have also had the Transar ATD2 system
The things you like when you are young and newbie are Dynamic,SPL,
subbass and so on, no? When you accumulate years and years of experiences a lot of things change IMO.
I want choerence, equilibrate, imaging,etc
The thing I do not like today of the Heils is that sort of aggressivity in the midhigh region, "s" zone, frankly unliestenable
So I have tried to "smooth" this carachter by every sort of tweak.
You can mitigate but not eliminate . I suspect it is related to that sort of Waveguide the magnet act ( great Heil tw), sort of.
In others terms maybe it is simply HOM l
This explain the reason because the Eton ER4 sound so different from the Heil IMO.

Cheers,
Paolo
  Reply With Quote
Old 31st December 2008, 02:10 AM   #5
diyAudio Member
 
Join Date: Dec 2008
Your English is quite good, Paolo, I can understand you perfectly. The Heils/AMT have had just the opposite effect on me. I put the audiophile speakers aside and(for now) enjoy the Heils with a renewed enthusiasm such as I had when I was younger and the music came first and equipment second. I think also there is special synergy with the amp, preamp, ect. as well. But this is part of the fun with audio. One never knows what will happen when a component is removed and then replaced with another one. The only thing that counts is how much we enjoy the process.
Regards,
Steve
  Reply With Quote
Old 29th January 2009, 12:37 AM   #6
diyAudio Member
 
diamondsouled's Avatar
 
Join Date: Oct 2007
Just take a look at my Frankenheils:
Attached Images
File Type: jpg frankenheil #1.jpg (61.0 KB, 405 views)
  Reply With Quote
Old 29th January 2009, 02:26 AM   #7
diyAudio Member
 
diamondsouled's Avatar
 
Join Date: Oct 2007
My advice: is to dump the el-chepo non-polar lytics used in the xovers of all too many ESS speakers and renew the xovers with some quality polys. This in itself can yield amazing benefits tonally.

Lar
  Reply With Quote
Old 29th January 2009, 09:15 PM   #8
diyAudio Member
 
Join Date: Dec 2008
Thanks for the reply Lar.
Do you know of a good brand/type of lytics that would be applicable for the AMT?
Neat looking Frankenheils too!
  Reply With Quote
Old 29th January 2009, 09:20 PM   #9
diyAudio Member
 
diamondsouled's Avatar
 
Join Date: Oct 2007
Quote:
Originally posted by dubhouse
Thanks for the reply Lar.
Do you know of a good brand/type of lytics that would be applicable for the AMT?
Neat looking Frankenheils too!
Best not to use non-polar electrolytics at all. Find a source for good quality Poly caps and use those instead.

Lar
  Reply With Quote
Old 10th May 2009, 05:40 PM   #10
diyAudio Member
 
Join Date: Nov 2007
Default Frankenheils

DIAMOND:
I noticed you were using amt Monitor s or amt1aM s as well.

(the amt is mounted at about 36in in height in the factory tower config.)

I also noticed you mounted your amt what appears to be considerably higher.

so I have two questions
what height did you use ?

Do you have an opinon / thoughts on the effect of the increased height?

thanks
  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
Upgrades for D1 sixty9 Pass Labs 13 2nd July 2012 09:18 AM
Krell CD-DSP upgrades-What's available gto127 Digital Source 4 11th October 2011 07:36 AM
t-amp upgrades Code Class D 1 14th January 2006 04:12 PM
Forte 4 Upgrades leebert Pass Labs 3 5th December 2004 02:06 AM


New To Site? Need Help?

All times are GMT. The time now is 03:18 PM.


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