JohnH's latest activity
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JohnH replied to the thread Work Bathroom Etiquette.Fundamental rule if there's two guys there: No talking until you both reach the hand basins. Two women? A man and a woman? - I have no... -
JohnH replied to the thread Simple Attenuators - Design And Testing.Following on from above, here's a diagram for those who love diagrams: This the calculated response of a basic 8 Ohm M2, driven from...
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JohnH reacted to Gene Ballzz's post in the thread Simple Attenuators - Design And Testing with
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Thanks for that info. R7=30Ω & R8=5Ω. Makes for "Mo Betta" ordering, availability, etc! Thanks Again, Gene -
JohnH replied to the thread Simple Attenuators - Design And Testing.Hi Gene, I looked at that before, to try to work out a set of values to buy from typical Chinese sellers - see the first diagram. I...
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JohnH replied to the thread SV20c questions.Hi Gene, Id like to see those! are you still able to point a link to those comments? J
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JohnH replied to the thread Simple Attenuators - Design And Testing.Aluminium is all good, whether its die-cast or extruded. Its about 5x as conductive as steel, and probably 2x as thick in a given...
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JohnH replied to the thread Simple Attenuators - Design And Testing.That's a shame! I would have looked very nice Im happy with the Hammond styles for mine, and the box 'lid' is the base which looks a...
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JohnH replied to the thread Simple Attenuators - Design And Testing.Hi @Gert-Jan van der Heiden . That looks like a really nice build, clean and simple and I like the 3d coil-mount gadget. Just on the...
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JohnH replied to the thread I need a way to boost the VOLUME of an already od boosted JCM800.Just throwing out some thoughts: So if im following this right, there's plenty of volume available, but a pure volume change is wanted...
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JohnH replied to the thread New Harley Benton PA-250 Attenuator.Yes you should do it! (but keep the day job!). You'll see how easy it is to build the perfect attenuator. BTW, if you do, a voice coil...
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JohnH replied to the thread Simple Attenuators - Design And Testing.ok, I can have a go at working that out. Another reason not to go down to 20ga is to control resistance, which we don't really want in...
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JohnH replied to the thread DSL401 dead - no sound.Yep! that's the key question! The classic issue with these amps is the rectifier that supplies the heaters that make these glow. Note V1...
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JohnH replied to the thread Simple Attenuators - Design And Testing.Hi @Gene Ballzz , I think the case looks good for the basic versions, given some planning . Would it need some components on the top and...
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JohnH replied to the thread Simple Attenuators - Design And Testing.Hi @lwgramith , Im very happy that you got it going! My hunch from the various readings is it was some kind of short to ground, maybe...
