Hoffman Amplifiers Tube Amplifier Forum
Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: joesatch on May 08, 2022, 07:08:40 pm
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Two 8 ohm greenbacks. I have a plate with two cliff jacks. I found this diagram on the interwebs which looks ok EXCEPT in 16 ohm mode the second speaker's negative has no path to the circuit (unless i'm conceptualizing the jacks in the wrong orientation). Can someone check this?
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The top speaker is hard wired to the 16Ω jack tip and sleeve. That's a deal breaker.
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How would i take two cliff jacks and have one be 4ohm and the other be 16ohm?
History repeats itself
:l2:
https://el34world.com/Forum/index.php?topic=24566.0 (https://el34world.com/Forum/index.php?topic=24566.0)
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How would i take two cliff jacks and have one be 4ohm and the other be 16ohm?
Hurts my head to think about it. I'd do it like this...
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This schematic works with 3 jacks: https://www.tubesandmore.com/sites/default/files/associated_files/s-h700_plug_drawing.pdf (https://www.tubesandmore.com/sites/default/files/associated_files/s-h700_plug_drawing.pdf)
I bought one these some years ago -- worked great until one of the jacks fell apart, and so I just rebuilt it with the schematic and parts I had laying' around.
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This schematic works with 3 jacks: https://www.tubesandmore.com/sites/default/files/associated_files/s-h700_plug_drawing.pdf (https://www.tubesandmore.com/sites/default/files/associated_files/s-h700_plug_drawing.pdf)
I bought one these some years ago -- worked great until one of the jacks fell apart, and so I just rebuilt it with the schematic and parts I had laying' around.
i will try to work with this and eliminate the middle option. i believe this is what i need:
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This schematic works with 3 jacks: https://www.tubesandmore.com/sites/default/files/associated_files/s-h700_plug_drawing.pdf (https://www.tubesandmore.com/sites/default/files/associated_files/s-h700_plug_drawing.pdf)
I bought one these some years ago -- worked great until one of the jacks fell apart, and so I just rebuilt it with the schematic and parts I had laying' around.
I’ve got one of these. It’s my second one technically. The first one failed on me for no reason. I add that only to say, their reliability is a bit suspect. Great concept though.