[Konvas] Kinor 35 Batteries

[Peter Haas]

On Feb 21, 2009, at 5:46 PM, Camak, Lael ((US - MGTTS)) wrote:

> Why is 3 pin industry standard for audio?

Because Ampex Corp adopted it for its professional audio recorders in  
1949, and everyone else followed suit.

The Cannon XLR [ * ] was first introduced about the time Ampex was  
looking for a connector series. Until then, the Cannon P and others  
was the favorite connector series for such applications.

Mitchell, Auricon and many others used the Cannon P connector. Still  
did, in their last products.

The true P is suitable for power, which was its main application,  
anyway, and the three-pin version, although rated 230 volts at 12  
amps, was certainly usable for a ribbon microphone with its -60 dBm  
output.

The EP, available from ITT Australia Pty. Ltd. is pin-compatible with  
the P, but it intended only for low voltage applications, such as  
stage speakers.


[ * ] It was first called just the X, only later was a latch added  
thereby resulting in the XL, and, finally, a rubber sealing element  
was added thereby making the XLR. There was a steel version of this  
connector, but it was exceptionally expensive.