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Read the Post in new Window Read the Post in Threaded view  Post #46: Tweeters for Vitavox S2: Heil’s Air Motion Transformers. by Romy the Cat on 2006-10-31 
Browse the content of the threads in new Window  Thread: Tweeter for Vitavox S2. High-sensitively ribbons? in Horn-Loaded Speakers  64 Replies 
The Heil AMT drivers are well known in audio. There is a cult of people who follow them and they swear that Heil drivers are like nothing else. The Heil drivers were made by ESS, by Scandinavian, by German’s pro audio and by Russians. The do use defe...

Read the Post in new Window Read the Post in Threaded view  Post #4: I had no lack with AMT by Romy the Cat on 2012-11-01 
Browse the content of the threads in new Window  Thread: A different type of upper MF compression driver. in Horn-Loaded Speakers  7 Replies 
I do not like the AMT Heil drivers at all. I have no idea what 5 times higher transient response they claimed but to my ears all AMT drivers I heard sounded like their upper notes are covered with 2 inch deep saliva. The Heil drivers are in my view t...

Read the Post in new Window Read the Post in Threaded view  Post #7: Goto S150 with what? by Rewind on 2013-07-03 
Browse the content of the threads in new Window  Thread: A Frankenstein Macondo - Injection channel - trying it as op... in Horn-Loaded Speakers  14 Replies 
I kind of got stuck in selecting an upper midrange driver, above 2kHz. If a driver is going to screech in your ears it is going to be in these frequencies. I was never really satisfied with the range of 1" compression drivers I tried. That is wha...

Read the Post in new Window Read the Post in Threaded view  Post #3: 5 to 1? by rowuk on 2012-11-01 
Browse the content of the threads in new Window  Thread: A different type of upper MF compression driver. in Horn-Loaded Speakers  7 Replies 
The AMT Heil driver had an interesting geometry that has much more surface area due to the accordian principle. At the time this technology was new, they had much extended output and bandwidth due to the higher acceleration possible with this unique ...

Read the Post in new Window Read the Post in Threaded view  Post #8: You are all over the map. by Romy the Cat on 2013-07-03 
Browse the content of the threads in new Window  Thread: A Frankenstein Macondo - Injection channel - trying it as op... in Horn-Loaded Speakers  14 Replies 
[quote user="Rewind"] I kind of got stuck in selecting an upper midrange driver, above 2kHz. If a driver is going to screech in your ears it is going to be in these frequencies. I was never really satisfied with the range of 1" compression driver...

Read the Post in new Window Read the Post in Threaded view  Post #27: The Purpose of the Horn by Paul S on 2019-06-19 
Browse the content of the threads in new Window  Thread: The IDEAL horn system in Horn-Loaded Speakers  27 Replies 
Gera, is this an idea you're familiar with from a sonic standpoint?  The horns are supposed to boost lower frequencies within their pass bands without adding their own sound, or - more realistically - allowing for their own minimal contribution to th...

Read the Post in new Window Read the Post in Threaded view  Post #7: RE: room treatment and loading by movingcoilguy on 2008-05-30 
Browse the content of the threads in new Window  Thread: Wharfedale Super 12/RS/DD 12" full range driver in Audio Discussions  9 Replies 
I Romy I have readone of your posts that you sent or posted and I am beginning to get a bit of a grip of what you are saying but will continue to read the other thread also. I guess at this point I should really use the tool I have and see what if an...

Read the Post in new Window Read the Post in Threaded view  Post #61: Yes, I know those drivers by Romy the Cat on 2008-10-25 
Browse the content of the threads in new Window  Thread: Macondo’s MiniMe or about Pilot Acoustic Systems in Audio Discussions  213 Replies 
[quote user="Lbjefferies7"]I found these a few days ago...https://www.solen.ca/pdf/atd/14w2608agti.pdfAny experience or speculation about these drivers?[/quote]They are ADT version of Görlich. I spoke in some extend about Görlich at my site, do the s...

Read the Post in new Window Read the Post in Threaded view  Post #53: A wonderful write up about ribbons. by Romy the Cat on 2006-11-06 
Browse the content of the threads in new Window  Thread: Tweeter for Vitavox S2. High-sensitively ribbons? in Horn-Loaded Speakers  64 Replies 
Continuing to harass the readers of my site and myself with the good news about the performance of my SA8535 driver I would like to post a very educational article about the subject. As I told before, being familiar with sound of ribbons then never i...

Read the Post in new Window Read the Post in Threaded view  Post #1: Understanding Line Array Systems by Romy the Cat on 2006-10-24 
Browse the content of the threads in new Window  Thread: Understanding Line Array Systems in Audio Discussions  0 Replies 
Understanding Line Array SystemsBy John Murray Behind the buzz, there are a lot of factors at work in line arrays. An explanation and comparison of current models. This discussion can’t be contained in just a few paragraphs, so we must start with th...

Read the Post in new Window Read the Post in Threaded view  Post #1: Some horn writing by Thomas Dunker. by Romy the Cat on 2006-01-14 
Browse the content of the threads in new Window  Thread: Some horn writing by Thomas Dunker. in Horn-Loaded Speakers  0 Replies 
All below is written by Thomas Dunker Yeah, "sound consistent independent of signal level" is a very precise way to sum up my whole speaker philosophy. Anything that is assumed to be constant, but which actually changes with signal dynamics is what ...

Read the Post in new Window Read the Post in Threaded view  Post #1: An Interview With Dr. Bruce Edgar by Romy the Cat on 2007-07-10 
Browse the content of the threads in new Window  Thread: An Interview With Dr. Bruce Edgar in Horn-Loaded Speakers  0 Replies 
The Other End of the Single End: Modern Horns Done With Flare An Interview With Dr. Bruce Edgarby Dave Glackin, printed in POSITIVE FEEDBACK. 1996 Dave Glackin interviewed Dr. Bruce Edgar in his home, prior to the 1996 WCES. A follow-up on the speak...

Read the Post in new Window Read the Post in Threaded view  Post #1: Valve Technology Timeline by Romy the Cat on 2006-06-18 
Browse the content of the threads in new Window  Thread: Valve Technology Timeline in Audio Discussions  4 Replies 
The Valve Technology Milestone Timeline Courtesy to the National Valve Museum 1640 The first vacuum. Otto von Guericke's air pump 1643 The barometer first demonstrated by Evangelista Torricelli 1654 Magdeberg Hemispheres a d...
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