whats the deal with Kt66 tubes in Dynaco's??

faster100

I read that you can use Kt66's in place of the el-34's in the St 70
Is this true, i also read the Kt77's could be used also.. The manual says differect tubes that can be used in place of also... anybody try this? good bad, indifferent?? wanna know

madmax

The KT series tubes look cool because they are a lot bigger and they have a few extra watts. To me they don't sound as good as the EL-34's. Not a lot of tube magic.
madmax

faster100

Oh ok, So if i find any local cheap (i havent) then i still could grab em.. I noticed the Heathkit amps take these

madmax

When you change from EL34 to KT or vice versa (I forget which way) you have to add a resistor some where too.
madmax

organ

I remember reading something about this. Like Madmax said, you need add a resistor somewhere. A lot of people like the EL34 for its "romantic" sound. The amp was designed for EL34/6CA7 output tubes. I think modding it for KT tubes could change the specs in certain areas.

You should order a new pair of NOS 7119 when you get the chance. NOS are becoming rare. The price of the JAN 7199 jumped $7 since I got mine. Mullard 5AR4 are going up in price as well. I'll have to order spares. This disease is killing me.

Maurice

madmax

Anything you can buy now you should. NOS Tubes overall have gone way up since I got into it a few years.
madmax