The 6LF6 used in my Futterman H3aa's is capable of decent current delivery. This is a TV tube designed for use as a horizontal deflection amplifier in b&w TV's.
OTL amps, my pick for the tube used.
This is my OTL tube pick for an OTL the 6C33C tube.
I don't believe much can compete with it for current, and that the big achilles heel of OTL's
https://www.navisonaudio.com/uploads/images/thumb_medium/otl-150-1.jpg
https://www.navisonaudio.com/uploads/images/thumb_medium/otl-150-3.jpg
Just had to show this, in it's glowing glory.
Cheers George
I don't believe much can compete with it for current, and that the big achilles heel of OTL's
https://www.navisonaudio.com/uploads/images/thumb_medium/otl-150-1.jpg
https://www.navisonaudio.com/uploads/images/thumb_medium/otl-150-3.jpg
Just had to show this, in it's glowing glory.
Cheers George
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- 30 posts total
Those who are fans of the Futterman H3aa should keep an eye out for a new OTL designed and built by Roger Modjeski that uses the 26DQ5 which is also a sweep tube designed for very high peak currents. If I remember correctly Roger mentioned the 26DQ5 tube is capable of 1 amp of current and in this circuit, which he designed as a tribute to Futterman, uses 6 output tubes per monoblock, 3 to pull up and 3 to pull down, giving an
output current of 3 amps into any load. |
giving an output current of 3 amps into any load.I know this is a good figure for an OTL, but I have to laugh when I look at the flagship models of my amps (100-amps continuous) https://ibb.co/59M4ZZp https://ibb.co/VHgjcXJ We had a pair of these here https://img.ukaudiomart.com/uploads/large/1760474-jbl-array-1400-speakers.jpg driven by the big Fluterman OTL’s, and they were sucked dry on transients when we wanted some medium level out of them. Cheers George |
- 30 posts total