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In the Forum: Horn-Loaded Speakers
In the Thread: RAAL “Water Drop” tweeter for Macondo.
Post Subject: The Water Drop's Second breathing + New Super MilqPosted by Romy the Cat on: 9/13/2007
Over the course of the last year I have been gently harassing my transformers-savvy surrounding trying to evangelize them into amorphous core. They stubbornly and perhaps stupidly resist. Some of them not…
During the last few months I was talking with a number or people with objective to have the HF channel of my 6-chennal Super Milq to drive RAAL’s “Water Drop” directly. The requirement was to use amorphous transformer. Two people bid for the job but after a conversation with Alex, (the RAAL guy who made the “Water Drop”) I gave him the project as I fell that he has better experience with the Ribbon’s needs then any other person I know. I got the new transformers a week ago from Alex and put them today into the play.
Lately I spent a LOT of efforts with finding a right solution for high-pass filtering for my HF and MF channel and nothing give me the sound that I found acceptable. That why I did not put the WD into the game right the way – was waiting for the right crossover solution for HF channel. However, yesterday I have found a VERY good sounding solution using RL filter in MF channel (superbly!!!) and an air capacitor on the “Water Drop”, both of course at line level.
http://www.GoodSoundClub.com/TreeItem.aspx?PostID=5288
I deseeded do not go for RL filter in tweeter channel as it would even further increase the restive chain in the driver’s grid. I would like to keep it relatively high as the 6E6P is VERY fast tube but still I would like do not go too for too high resistance. Also, the air cap demonstrated phenomenal sound at HF, so I let it be. Then there were a lot of efforts with shielding, assembling, calibrating and… now the 6E6P with 30mA on plate drivers directly the “Water Drop” via 175:1, amorphous torpid, foil-to-wire. (The transformer sits on the tweeter side and connected via cable caring plate voltage – I use regular hoop up wire at this moment)
I do not know where Sound was loosing before: in filtering capacitors, in time anomalies of the high order (second) filter, in slow transformer core, in the unnecessary double transforming, in the unnecessary double staging, or whatever. I know that the new result is the order of magnitude more interesting. I did not integrate the Water Drop yet properly but the preliminary sound is kind of scarely good.
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