Quote:
Originally Posted by Electronic M
Not in the source. I was talking about in propagation through injection points the TVs amplification stages.
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Aha. In that case, it's a question of the demodulator and color difference stages bandwidth. Color bandpass amp will not be used, so the overall color difference delay will be less than with a composite or S-Video input. If you input the Y before the delay line, it will be delayed too much, and lag the chroma. If you input it after the delay line, it will lead the chroma.
Things that will affect chroma delay are deliberate filtering following the color demods (tube sets: shunt capacitors on the demod plates, series coils between the demods and color difference amplifiers, etc.). Explicit filter components can be removed (caps) or shorted (coils), since there is no need to filter out the subcarrier. However, this may still leave somewhat reduced chroma bandwidth (and some chroma delay) due to plate capacitance and large load values in the chroma stages.
If you can modify the color difference paths to have the same bandwidth as luma, the delay should be the same. Not guaranteed, but maybe possible.
Need to see the particular schematic in order to figure out whether it's worth a try.