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Audio and Video Talk
Valves / Vacuum Tubes
Anyone seen one of these? (Vintage naked pics)
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<blockquote data-quote="Family_Dog" data-source="post: 538103" data-attributes="member: 82"><p>The phono input most likely would have been designed for a crystal/ceramic cartridge, sensitivity would be anything in the region of 100 - 500mV, rather than for a magnetic cartridge. The caps may or may not be OK, but it should be run up either with a variac or something like a 220v 40-60w incandescent globe wired in series with one of the AC mains leads.</p><p></p><p>You might find the valve pins bases a bit iffy due to corrosion, judging by the general appearance of the chassis, but a good busrt of contact cleaner (Kontakt 60 or similar from Mantech) would sort that out, if not, the B9A bases are easy enough to swap out. But if you do that, I would spray/powder coat the chassis and give it a full restore job.</p><p></p><p></p><p>-F_D</p></blockquote><p></p>
[QUOTE="Family_Dog, post: 538103, member: 82"] The phono input most likely would have been designed for a crystal/ceramic cartridge, sensitivity would be anything in the region of 100 - 500mV, rather than for a magnetic cartridge. The caps may or may not be OK, but it should be run up either with a variac or something like a 220v 40-60w incandescent globe wired in series with one of the AC mains leads. You might find the valve pins bases a bit iffy due to corrosion, judging by the general appearance of the chassis, but a good busrt of contact cleaner (Kontakt 60 or similar from Mantech) would sort that out, if not, the B9A bases are easy enough to swap out. But if you do that, I would spray/powder coat the chassis and give it a full restore job. -F_D [/QUOTE]
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Audio and Video Talk
Valves / Vacuum Tubes
Anyone seen one of these? (Vintage naked pics)
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