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In the Forum: Analog Playback
In the Thread: 7788 tube mic pre design
Post Subject: Re: 7788 - love the tube!Posted by rafaroxlm on: 2/17/2006
Jim it was probably the 7788. This "supertube" was military stockpiled and difficult to get until about 8 years ago when finally military released. Then you could get them for $5 but people are getting wise now as per the $30-40 prices. I been wanting to try this tube as a first tube in a tube mic pre since released but been too complicated. Amperex had very tight tolerances and high reject rates with this one. But it has very high gain, linearity and low microphonics as per the heavy duty construction. Refer to this 1961 reprint. http://www.elecdesign.com/Articles/ArticleID/4080/4080.html Apparently you are a designer would appreciate help with project if possible, feel free to E mail Rerurn to Romy the Cat's Site