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Read the Post in new Window Read the Post in Threaded view  Post #68: Waveguide for AMT by jzagaja on 2010-11-19 
Browse the content of the threads in new Window  Thread: Who builds horns? in Horn-Loaded Speakers  84 Replies 
GAMT90....

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 #3: AMT vs. ribbon by el`Ol on 2008-02-08 
Browse the content of the threads in new Window  Thread: The Active High Frequency Solution - AHFS in Playback Listening  5 Replies 
In my opinion the trend towards AMTs in mainstream audio ist justified. They integrate very well with direct radiator midranges, even when they are crossed low. They are more dynamic and detailed than fabric domes, but not absolutely unforgiving. The...

Read the Post in new Window Read the Post in Threaded view  Post #4: Any “static” tweeter vs. AHFS. by Romy the Cat on 2008-02-08 
Browse the content of the threads in new Window  Thread: The Active High Frequency Solution - AHFS in Playback Listening  5 Replies 
I am not quite sure why Paul came up in this thread with the subject of “ribbons sensitivity to... everything”. That is absolutely not relevant to the AHFS concept. el`Ol, the ribbons and AMT tweeter I feel absolutely identically wrong if to approach...

Read the Post in new Window Read the Post in Threaded view  Post #8: The ProAMT 336PP-12“ by Romy the Cat on 2012-11-04 
Browse the content of the threads in new Window  Thread: A different type of upper MF compression driver. in Horn-Loaded Speakers  7 Replies 
[quote user="rowuk"]I have heard some nice speakers in Germany using the Mundorf Air Motion Transformers. No saliva, ample "substance" in their tone and a very nice integration.http://www.mundorf.com/AMTnews/MUNDORF_PRO_AMT_FLYER_2012.pdfhttp://www.e...

Read the Post in new Window Read the Post in Threaded view  Post #66: New models from Autotech by jzagaja on 2010-11-19 
Browse the content of the threads in new Window  Thread: Who builds horns? in Horn-Loaded Speakers  84 Replies 
New models - "Universe" speaker and AMT waveguide....

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 #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 #1: A Frankenstein Macondo - Injection channel - trying it as open baffle. by Rewind on 2013-07-02 
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 
Hi,I am slowly building my own Macondo. I understand why the injection channel is there. It brings some kind of softness that the compression drivers lack. I am using a 12" JBL midbass driver (~100dB sensitivity) in a 50L single driver Marshall cabin...

Read the Post in new Window Read the Post in Threaded view  Post #5: Hife Deluxe by el`Ol on 2010-05-17 
Browse the content of the threads in new Window  Thread: Munich High End 2010 in Horn-Loaded Speakers  39 Replies 
[quote user="manisandher"]Thanks for all the suggestions. As it happens, there were no exhibitors at the Flemings Hotel this year. But I did pop into the Stax stall before listening to anything else.[/quote]The Hifi Deluxe was in the Le Meridien.http...

Read the Post in new Window Read the Post in Threaded view  Post #17: You can use DSET with anything. by Romy the Cat on 2010-03-15 
Browse the content of the threads in new Window  Thread: More power from Melquiades? More powerful tube? in Melquiades Amplifier  19 Replies 
You can build DSET for anything. DSET concept does not imply any topology but recognition of purpose and accommodation of a topology for the purpose. Generally the 93dB sensitivity is not something that I would attack with SET, unless you use SET aro...

Read the Post in new Window Read the Post in Threaded view  Post #18: Reply Fishbowl by RennieB on 2010-03-15 
Browse the content of the threads in new Window  Thread: More power from Melquiades? More powerful tube? in Melquiades Amplifier  19 Replies 
Hi Romy,Thanks a lot for your reply! Very helpful but there is some misunderstanding...I personally have a WE91A 300b Clone, no ambition to build something with the tb3-2000....There is a guy building one though...  ( I would if i could!)My problem i...

Read the Post in new Window Read the Post in Threaded view  Post #4: More dipole tweeters by martinshorn on 2017-09-25 
Browse the content of the threads in new Window  Thread: RAAL Dipole Ribbon Tweeter in Audio Discussions  4 Replies 
hi Paul I was just checking recently.  My electrostatics work great, they also got excellent radiation in HF as the outer stators are lowpassed, so im using very slim 1 inch stripe (50 inch high) in the center only. Excellent radiation and smooth...

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 #2: I think you misuse my terminology by Romy the Cat on 2013-07-02 
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"]Hi, I am slowly building my own Macondo. I understand why the injection channel is there. It brings some kind of softness that the compression drivers lack. [/quote] OK, but it is not how I feel about the service of injection...

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 #16: Fishbowl amping by RennieB on 2010-03-14 
Browse the content of the threads in new Window  Thread: More power from Melquiades? More powerful tube? in Melquiades Amplifier  19 Replies 
Hi Romy,Great site, got lost here for a while now searching WE13a after building a WE91a 300B set, quess have to reconsider sell and wil look in to the Melq's for the near future... Also it even got me a little in to horns...For now i have a question...

Read the Post in new Window Read the Post in Threaded view  Post #3: Summary by Rewind on 2013-07-02 
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 
Thanks for the detailed answers. I will explain my setup.You are right about the dipole bass correction instead of the injection channel. Since I am waiting for both a subwoofer and the Fane Studio 8M and their horn, I am using the 12" as a b...

Read the Post in new Window Read the Post in Threaded view  Post #3: OK let's have a dedicated S3 thread by gordan on 2012-11-28 
Browse the content of the threads in new Window  Thread: S3 on tractrix 260 graph. in Horn-Loaded Speakers  4 Replies 
OK Romy, I agree this should stay here, especially that I will probably have more observations to come as from the late January. I didn't explain the context of S3 use in my future system. I'm awaiting for a delivery of Beyma TPL-150 which will be ...

Read the Post in new Window Read the Post in Threaded view  Post #11: Re: Additive capacitance: mixing oils and films? by Axel on 2009-08-16 
Browse the content of the threads in new Window  Thread: Additive capacitance: mixing oils and films? in Audio Discussions  10 Replies 
well, to add my bit of mustard to this here oldie thread.I HAVE mixed film and oils successfully in e.g. a tweeter x-over of a Burmester 961. The tweeter is an AMT (air-motion-transformer) and very revealing.The original C's are two sets of...

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 #57: Goto vs. Goto? by Romy the Cat on 2009-08-23 
Browse the content of the threads in new Window  Thread: ... again on GOTO Unit drivers... in Horn-Loaded Speakers  108 Replies 
[quote user="MINGSU"] The 37 is 20 year old model and it is not in production anymore.  The current production model for export market are 370(110dB), 370DX(113dB), 3880S(116dB).The driver spec. is 400Hz to 18kHz but the recommended crossover range i...

Read the Post in new Window Read the Post in Threaded view  Post #6: Tweeters: a new round. by Romy the Cat on 2005-07-24 
Browse the content of the threads in new Window  Thread: Electro-Voice T350, T35, + Fostex tweeters. in Horn-Loaded Speakers  34 Replies 
The recent events in my playback made me to think about he new prospective duty of tweeters. Since the Super Melquiades was enlisted for duty the Vitavox S2 got it’s own dedicated amplifier channel and stopped to “see” the coil of upper bass driver. ...

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 #218: Bearing design by DHT4ME on 2022-03-07 
Browse the content of the threads in new Window  Thread: Ultimate Turntable in Analog Playback  220 Replies 
I built my "Ultimate Turntable" and did the long bearing approach. It is 8" long and .750" diameter. I have had a love hate relationship with the long bearing. While it is VERY stable it is extremely difficult to setup. The long length absolutely...
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