3k vs 1.7k in OT's?

[Oddvar]

Hi.  Is there any significant difference between 1.7k and 3k ohms in an output transformer, or are they interchangeable?

[sluckey]

3K or 3.4K might be used with a pair of EL34s. 1.7K might be used with a quad of EL34s.

[Oddvar]

So it won't be usable with 4 6l6?

[sluckey]

Sure. Which one?

[Oddvar]

I am thinking of using it in a Dumble build...

[sluckey]

If I had one, I'd use this OT in a #183 build...

[SoundmasterG]

6L6's tend to like something closer to 2k for a quad and EL34's are very happy with 1.7k, but they will both work with either. The B+ used changes the optimum load as does the bias you set it to. There is a range of impedance that works with every tube type rather than a hard set value.

Greg

[shooter]

happy with 1.7k,

fwiw I used a 1.2k with a Quad SE of EL 84's in a Fi build  ~20W clean