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FLUTE FILTER &
matching TUBE PRE-AMP |
![](../misc_pix/flutefilter-1he.jpg) |
![](../misc_pix/flute_filter.jpg)
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![](../misc_pix/tube-pre.jpg)
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![](../misc_pix/flute1.jpg)
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![](../misc_pix/flute_filter-open.jpg)
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![](../misc_pix/tube-pre-inside.jpg)
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passive RC filter from the vermona organ ET6. uses NOS styroflex
capacitors. contains:
4 inputs ot each of the 6 octaves makes 24 selectable sounds. level loss from
43 dB or value of 150.
for this i did a matching tube pre, containing a EC92 for level gain &
a EC90 for current gain. prototype shown.
![](../pix/jack.gif)
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demovideo |
![](../pix/jack.gif)
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datasheet and
spectral pics |
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