Differences between version 7 and previous revision of Kons12AX7basedEQ&OverdriveCircuit.

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Newer page: version 7 Last edited on February 7, 2008 3:35 pm. by
Older page: version 6 Last edited on September 1, 2007 1:25 pm. by
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-Kon's 12AX7 based EQ & Overdrive circuit for Hammond Organs 
+[ Kon | KonZissis] 's 12AX7 based EQ & Overdrive circuit for Hammond Organs 
  
 This 12AX7 based EQ / overdrive circuit is designed for the Hammond tone wheel console organs that have valve preamplifiers such as the B2, C2 , RT2 , B3 , C3 , RT3 , A100 series , D150 series etc. It might also work in the M , M2 , M3, M100 series , L100 series , Porta B etc organs but I have not tried this out. 
 I think that it might also be adaptable for the earlier era console organs such as the Model a , B , BC , BV , CV , D , E etc but I have not tried this out either. 
  
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 more “vintage” sounding rounded out treble response which will make the treble harmonics of the overdrive effect sound sweeter because any fizzy sounding higher harmonics of the overdrive effect are rolled off. 
 The sweetening switch and the actual capacitor nf value chosen is also a matter of personal taste and also a matter of what Leslie or other amplifier and speakers are used. 
 The stock Jensen V21 in my 1971 Leslie 122 is brighter sounding than the V21's in other Leslies 122 cabinets that I have played and I like the sweetened sound when the 150 nf or the 220 nf capacitor is switched across the G-G output terminals. On other Leslies with mellower sounding V21's ,the overdrive sounds nice without needing the sweet switch. 
  
-I am the Hammond tech and roadie of the Dutch born Australian Progressive Rock organist Ray Vanderby and I have built the 12AX7 based EQ / overdrive into Ray's 1959 Hammond C3 organ. Because of the work that I have done with Ray's C3 and Leslies , Ray calls me ''Professor Kon'' and he refers to the12AX7 based EQ / overdrive unit as the ''ProKon EQ / overdrive unit''. 
+I am the Hammond tech and roadie of the Dutch born Australian Progressive Rock organist Ray Vanderby and I have built the 12AX7 based EQ / overdrive into Ray's 1959 Hammond C3 organ. Because of the work that I have done with Ray's C3 and Leslies , Ray calls me ''Professor Kon'' and he refers to the12AX7 based EQ / overdrive unit as the ''~ ProKon EQ / overdrive unit''. 
  
 Ray Vanderby is the band leader of the Australian Progressive Rock band “ Cosmic Nomads” , and in May 2007 Ray Vanderby added me into his band as the rhythm guitarist of the Cosmic Nomads. 
 The tone wheel generator of Ray's 1959 C3 has been recapped with new capacitors in order to more or less restore the original stock sound, and Ray plays his C3 through two solid state biamped Leslie 925 cabinets which have a JBL bass speaker and a JBL 2482 treble driver. 
  

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