Trying to see if there are any decent preamp designs for 40ish mu tubes.
No I don't need all that gain but have a lot of the 9pin 40ish gain tubes
like 5965, 12AV7, 6829, and E180CC and was thinking of trying a preamp
that utilized one tube (both triodes) per channel in a unit.
Here's one schem I'm throwin about in spice at the moment.
Any suggestions are more then welcome,
Thanks.
No I don't need all that gain but have a lot of the 9pin 40ish gain tubes
like 5965, 12AV7, 6829, and E180CC and was thinking of trying a preamp
that utilized one tube (both triodes) per channel in a unit.
Here's one schem I'm throwin about in spice at the moment.
Any suggestions are more then welcome,
Thanks.
Attachments
E180CC, 5965 were made 0bias condition tubes
I looked up two of the tubes you mentioned. They were made for computer use to operate under cut off and cut on conditions for long periods under 0 bias conditions. One manuals say the E180cc was not made for applications where low noise and low microphonics are a primary concern.
I looked up two of the tubes you mentioned. They were made for computer use to operate under cut off and cut on conditions for long periods under 0 bias conditions. One manuals say the E180cc was not made for applications where low noise and low microphonics are a primary concern.
All of the tubes I mentioned are used in many designs as the phase splitter tube amung others.
The poinz 6v6 amp, which is a pretty highly regarded amp uses the 5965 family of tubes upfront.
These are actually quite nice tubes for audio, if you haven't tried any you should give um a listen.
I'm using them in the phase splitter of my modded ST-70 with some very nice and quiet results.
The poinz 6v6 amp, which is a pretty highly regarded amp uses the 5965 family of tubes upfront.
These are actually quite nice tubes for audio, if you haven't tried any you should give um a listen.
I'm using them in the phase splitter of my modded ST-70 with some very nice and quiet results.
An Aikido? Some of the tubes are in this table, but you could make a real close guess on the values for others by comparing with similar tubes. This circuit topology tolerates a good range of operating conditions. Can even swap many tubes with no component changes.
http://www.tubecad.com/2006/05/blog0064.htm
Sheldon
http://www.tubecad.com/2006/05/blog0064.htm
Sheldon
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