Have 50C5 SE output transformer would it work with 6AQ5 tube don’t have LCR meter any recommendations on one from Amazon
50C5 data sheet says 2.5k for OPT primary load for Class A. 6AQ5 data sheet says 5k for load.
jeff
jeff
Find another output transformer, or find another tube.
You will be happier.
Both the plate resistances, rp, and the transconductances, Gm . . . of the 50C5 and 6AQ5 are completely different.
And the recommended operating plate and screen voltages are different too.
You will be happier.
Both the plate resistances, rp, and the transconductances, Gm . . . of the 50C5 and 6AQ5 are completely different.
And the recommended operating plate and screen voltages are different too.
The 50C5 is derived from the 6W6 and has the same characteristics except for the heater and plate dissipation ratings. Both have a 7.5 watt heater that has far greater emission than the 6AQ5. The 6AQ5 is based on the 6V6GT. Both have a 2.835 watt heater with far less emission capability, requiring a higher load impedance.
If the transformer came from an old radio, it likely fed a 3.2 ohm speaker. This can be determined by measuring the winding ratio. Using the same transformer with an 8 ohm speaker should reflect a 6250 ohm load on the tube which will "work" for a 6AQ5, as long as you don't expect much bass from it. This all depends on what you want to use it for. It might work for a small guitar amp, but it will fall short for a HiFi application.
If the transformer came from an old radio, it likely fed a 3.2 ohm speaker. This can be determined by measuring the winding ratio. Using the same transformer with an 8 ohm speaker should reflect a 6250 ohm load on the tube which will "work" for a 6AQ5, as long as you don't expect much bass from it. This all depends on what you want to use it for. It might work for a small guitar amp, but it will fall short for a HiFi application.
Thanks for reply will look for another output transformer. Looking to build 6aq5 SE stereo amp low watt MP3 amp
A lot of old reel to reel tape recorders used the 6AQ5 for the amp section. Se if you can find one that's still intact. They seem to be quite popular with the guitar crowd.
jeff