[Hallicrafters] Use of 6146B tubes in the HT37

[Joseph Trombino Jr]

Howdy Hallicrafters:

I have heard or read about being very careful when contemplating 
substituting 6146B's for older plain 6146's.  The 6146B's produce more 
output but supposedly draw substantially more current.

Is this correct and should I just stick with plain 6146's...if I can find 
them:-)

Have just gotten an HT37, thus, the reason for my question.

                                    73, Joe W2KJ
                                    North Carolina