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InPut 6SN7 5th an 6th tubes in the Circlotron

64.12.116.141

Well here is the set up V1,V2,V3a,V3b,V4a,V4b,the Money tube is V4a,V4b
Get full output sound to Die for,if M60 amps were all i Had i wood put
V3,b,an 4,b in if i had to outboard,one way or another Just the
Paralleling of V3,an V4 an the 5ohm 6wRES. in the Cathodes of the 6AS7 in the output, Take these Amps to the top of there Game!
thay Are a MUST.
thanks

Follow Ups:

RE: V4, V3, V1 and V2 - Ralph 09:53:25 02/28/08 (8)
The V4 tube in the M-60 is the driver tube that is direct-coupled to the output tubes. On the Mk2.2 chassis, it is the rear right hand tube. V3 is the constant current source, rear left.

V1, V2 and V3 comprise the voltage amplifier stage. V1 and V2 are the most audibly important; V1 (bottom of differential cascode) is front left, V2 (top of differential cascode) is front right.

At least 200uf on the plate of V4 is needed to really get the circuit to perform. In the production amplifiers there is a separate leg in the power supply for the cathode circuit as well- that also has a minimum of 200uf.

Nowadays we run the voltage amplifier off of its own separate leg of the power supply so it can't 'talk' to the power supply of V4. Since the current requirements are not nearly as profound and because it has a very effective CCS, we run 100uf for the plate and 100uf for the cathode circuit (cathode of V3).

The result is that the driver power supply is free of noise with any signal or input level- this is very important for low distortion (in audiophile terms, 'smooth sound with good detail') and authority.
- RE: V4, V3, V1 and V2 - tubevibb 04:36:04 02/29/08 (7)
  Mr.Karsten
  Thanks for you Time
  BUt CAN you SAYagin,
  Since the current requirements are not nearly as profound and because it has a very effective CCS, we run 100uf for the plate and 100uf for the cathode circuit (cathode of V3).
  So do you mean,V3 tube pin3 cath.an pin5 plat,need 100uf to Grond on each?
  
  An v4 i have Allways had 330uf on the plats i did not have a 100uf.
  
  In the production amplifiers there is a separate leg in the power supply for the cathode circuit as well- that also has a minimum of 200uf.
  
  Are thay 100ufs in front of the 45kohms pin 3an pin6 of V4 to ground?
  thanks
  - RE: V4, V3, V1 and V2 - Ralph 08:18:40 02/29/08 (6)
    > Mr.Karsten
    > Thanks for you Time
    > BUt CAN you SAYagin,
    
    > So do you mean,V3 tube pin3 cathode, and pin 5 plate, need 100uf to Ground on each?
    
    No. V3 has a cathode resistor; where that resistor goes to the power supply should be at least 100uf that is bypass for the power supply. In older amplifiers the cathode resistors of both V3 and V4 tied to the same point.
    
    > On v4 I have always had 330uf on the plates I did not have 100uf.
    
    Good.
    
    > > In the production amplifiers there is a separate leg in the power supply for the cathode circuit as well- that also has a minimum of 200uf.
    
    > Are they 100ufs in front of the 45kohms pin 3an pin6 of V4 to ground?
    > thanks
    
    If you have 330uf bypassing the plates of V4 I'd have 330uf to bypass the power supply connection of the V4 cathode resistors as well.
    - RE: V4, V3, V1 and V2 - tubevibb 09:50:43 02/29/08 (5)
      Yes i Have the input setup with the Caps the way you say thank you.Some say i allways do to much but it sounds better to ME!
      an if i were to set up with diodes B+anB- for V4 my Volts on V4 now,315+- Be the Same.Is Extra winding on your Xfourmer the Same after diodes,315+-
      thanks
      - RE: driver B+ - Ralph 11:28:34 02/29/08 (4)
        
        In Reply to: RE: V4, V3, V1 and V2 posted by tubevibb on February 29, 2008 at 09:50:43
        
        -runs about +315V and -315V at the rectifiers.
        
        We run a different power transformer now that has only the high voltage windings on it. Driver filaments are handled by the filament toroid. The new HV transformer also has much improved electrostatic shielding.
        
        RE: driver B+ - tubevibb 06:48:21 03/03/08 (3)
        
        In Reply to: RE: driver B+ posted by Ralph on February 29, 2008 at 11:28:34
        
        Is the S30III ran off one xfourmer for the frontend,I got to hear the s30 an it sounds Sweeter than the m60s
        An i was thinking my be one Xfourmer is the Key.
        thanks
        
        RE: driver B+ - Ralph 14:33:55 03/03/08 (2)
        
        In Reply to: RE: driver B+ posted by tubevibb on March 03, 2008 at 06:48:21
        
        If it was a later S-30, it may well have done better than an earlier M-60. The later M-60s are sounding better too.
        
        Just one driver B+Xfourmer in S30? - tubevibb 04:39:57 03/04/08 (1)
        
        In Reply to: RE: driver B+ posted by Ralph on March 03, 2008 at 14:33:55
        
        SO the S30s All only have {One} frountend 300+ 300- Xfourmer For L an R inputs?
        thanks
        
        RE: Just one driver B+Xfourmer in S30? - Ralph 08:21:25 03/04/08 (0)
        
        In Reply to: RE: Just one driver B+Xfourmer in S30? posted by tubevibb on March 04, 2008 at 04:39:57
        
        Yes. The two channels have separate legs in the power supply.

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