Audio synthesis via vacuum tubes/Metasonix TS-21 hellfire modulator: Difference between revisions
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The beam modulator in the TS-21 is wired to a built in LFO. This LFO can be disabled if the modulation effect is not wanted, by turning down both the L1 and L2 controls. |
The beam modulator in the TS-21 is wired to a built in LFO. This LFO can be disabled if the modulation effect is not wanted, by turning down both the L1 and L2 controls. |
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It causes the beam to switch back and forth between two anodes, which then go to the output. That's right this is a stereo modulator. You can insert either a mono 1/4" plug into the AUDIO OUTPUT jack, and get a mono signal. Or you can insert a stereo plug, and get a stereo effect. The beam tube switches the signal back and forth between the two outputs. Plus, the beam tube has something solid-state lacks a screen grid. By adjusting its voltage, we get both gain control, and we get variable distortion of a very unusual nature! You have to hear its effect to understand. The beam tube is very non-linear in most settings, so it can be used as a distortion effect. At some positions, the beam screen control causes waveform "folding" roughly similar to that seen in the [[Serge waveshaper]] modules but with tube-style nonlinearities. |
It causes the beam to switch back and forth between two anodes, which then go to the output. That's right this is a stereo modulator. You can insert either a mono 1/4" plug into the AUDIO OUTPUT jack, and get a mono signal. Or you can insert a stereo plug, and get a stereo effect. The beam tube switches the signal back and forth between the two outputs. Plus, the beam tube has something solid-state lacks a screen grid. By adjusting its voltage, we get both gain control, and we get variable distortion of a very unusual nature! You have to hear its effect to understand. The beam tube is very non-linear in most settings, so it can be used as a distortion effect. At some positions, the beam screen control causes waveform "folding" roughly similar to that seen in the [[Ken Stone/1973 classic Serge/Serge tripple wave-shaper|Serge waveshaper]] modules but with tube-style nonlinearities. |
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== Controls == |
== Controls == |