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08-26-2019, 10:00 PM
Hi
Based on your description of the splitter it does not sound specifically new or different. Adding cathode followers after a Schmitt splitter is common in amps with parallel output tubes, as Fender did in their 180W amps, and as I did in the SVT project in TUT5, and as was done in the original SVT and Vp amps from Ampeg. Hiwatt did it and many others.
Of course, you can add CFs even if there is only one output tube per side. The benefits are two-fold: The first is that the gain of the splitter is not effected by the loading of the output tubes or their grid-leaks. The second benefit is that the CFs can drive the output tube grids positive if driven that hard with no recovery issues. There will be no blocking distortion; rather, more clean output or "clean" clipping - no sticking or sonic drop-outs.
The CFs can be direct-coupled to the splitter, direct-coupled to the output tubes, or capacitively coupled to both.
Based on your description of the splitter it does not sound specifically new or different. Adding cathode followers after a Schmitt splitter is common in amps with parallel output tubes, as Fender did in their 180W amps, and as I did in the SVT project in TUT5, and as was done in the original SVT and Vp amps from Ampeg. Hiwatt did it and many others.
Of course, you can add CFs even if there is only one output tube per side. The benefits are two-fold: The first is that the gain of the splitter is not effected by the loading of the output tubes or their grid-leaks. The second benefit is that the CFs can drive the output tube grids positive if driven that hard with no recovery issues. There will be no blocking distortion; rather, more clean output or "clean" clipping - no sticking or sonic drop-outs.
The CFs can be direct-coupled to the splitter, direct-coupled to the output tubes, or capacitively coupled to both.
