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Audio and Video Talk
Valves / Vacuum Tubes
Single Ended Triode KT88
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<blockquote data-quote="Mars" data-source="post: 764808" data-attributes="member: 817"><p>I am building a stereo SET KT88 power amplifier with XLR and RCA inputs.</p><p></p><p>So far sticking with the 6SN7 voltage amplifier/driver setup and cathode bias.</p><p></p><p>The first step was to manufacture the transformers. The OPT were 2500ohms:8ohms and should give a wide bandwidth at 8 watts.</p><p></p><p>Here is the result:</p><p></p><p><a href="https://flic.kr/p/SiuC9W" target="_blank"><img src="https://c1.staticflickr.com/4/3672/33015803590_f6eb6c78fe_b.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></a><a href="https://flic.kr/p/SiuC9W" target="_blank">Mars SE88</a> by <a href="https://www.flickr.com/photos/marsamps/" target="_blank">Karel Mars</a>, on Flickr</p><p></p><p>I wanted a beefy choke, and settled on a 10Henry 250mA design.</p><p></p><p>Here you can see all the hardware bolted together:</p><p></p><p><a href="https://flic.kr/p/RATDHb" target="_blank"><img src="https://c1.staticflickr.com/3/2949/32556320064_6691d95cc3_b.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></a><a href="https://flic.kr/p/RATDHb" target="_blank">IMG_20170311_182149</a> by <a href="https://www.flickr.com/photos/marsamps/" target="_blank">Karel Mars</a>, on Flickr</p></blockquote><p></p>
[QUOTE="Mars, post: 764808, member: 817"] I am building a stereo SET KT88 power amplifier with XLR and RCA inputs. So far sticking with the 6SN7 voltage amplifier/driver setup and cathode bias. The first step was to manufacture the transformers. The OPT were 2500ohms:8ohms and should give a wide bandwidth at 8 watts. Here is the result: [url=https://flic.kr/p/SiuC9W][IMG]https://c1.staticflickr.com/4/3672/33015803590_f6eb6c78fe_b.jpg[/IMG][/url][url=https://flic.kr/p/SiuC9W]Mars SE88[/url] by [url=https://www.flickr.com/photos/marsamps/]Karel Mars[/url], on Flickr I wanted a beefy choke, and settled on a 10Henry 250mA design. Here you can see all the hardware bolted together: [url=https://flic.kr/p/RATDHb][IMG]https://c1.staticflickr.com/3/2949/32556320064_6691d95cc3_b.jpg[/IMG][/url][url=https://flic.kr/p/RATDHb]IMG_20170311_182149[/url] by [url=https://www.flickr.com/photos/marsamps/]Karel Mars[/url], on Flickr [/QUOTE]
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Audio and Video Talk
Valves / Vacuum Tubes
Single Ended Triode KT88
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