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Audio and Video Talk
Valves / Vacuum Tubes
Stereo 300B SET amplifier
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<blockquote data-quote="Mars" data-source="post: 1140443" data-attributes="member: 817"><p>I am busy finalising the drawing of the enclosure. Some design issues came up:</p><ul> <li data-xf-list-type="ul">I had to increase the box height to accommodate the VU assembly. Height now 90mm.</li> <li data-xf-list-type="ul">the tube cage must be high enough to cover the 300B tubes with some clearance between tube and top of cage. How high is a 300B tube? </li> </ul><p></p><p>From the Western Electric data page I got this:</p><p>[ATTACH=full]25113[/ATTACH]</p><p></p><p>So the tube protrudes about 151mm above the socket. I'll be recessing the the socket about 25mm, thus the tube will protrude about 126mm above the enclosure top. The cage is 140mm high, so there will be 16mm clearance between top of tube and the cage.</p></blockquote><p></p>
[QUOTE="Mars, post: 1140443, member: 817"] I am busy finalising the drawing of the enclosure. Some design issues came up: [LIST] [*]I had to increase the box height to accommodate the VU assembly. Height now 90mm. [*]the tube cage must be high enough to cover the 300B tubes with some clearance between tube and top of cage. How high is a 300B tube? [/LIST] From the Western Electric data page I got this: [ATTACH type="full"]25113[/ATTACH] So the tube protrudes about 151mm above the socket. I'll be recessing the the socket about 25mm, thus the tube will protrude about 126mm above the enclosure top. The cage is 140mm high, so there will be 16mm clearance between top of tube and the cage. [/QUOTE]
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Audio and Video Talk
Valves / Vacuum Tubes
Stereo 300B SET amplifier
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