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Rotary speaker

8/16/2000 6:27 PM
Rotary speaker
Excuse my english, Iīm brazilian.  
Has anyone built the rotary speaker from  
Stellanīs page? Iīm a beginner and want to  
know if itīs hard to make it.  
And has anyone built the MOS Doubler, from  
RG? The schematic are different from the  
layout. Iīve tried to make the layout.  
Thereīs sound, but no octave effect, just the  
"dry" signal. Any comments?