ef83/6BK8 circuit examples

[ioaudio]

[quote author="gyraf"]

Used in the K&H UE-100 as output driver - in triode mode:

http://www.gyraf.dk/schematics/schematics.html
[/quote]

i think the ef 83 is different from the e83f, which is also used as output driver in the v76.


prr,
the release time seems to be high in fact, it is a 6,8m resistor to ground after the 10µ cap( the leveling circuit of the 145 is the same like in the tk19 automatic).
as it is a automatic leveling amp rather than a compressor, i would think a high release time was intended.(not that high though)
the "highpass" 1µ is very interesting indeed. thank you for explaining :thumb:

 

[volker]

Could somebody repost the Grundig schematic(s) discussed in this thread? I have a handful of EF83s and could use some inspiration.

 

[gyraf]

For the record, The E83F (used as output driver in e.g. UE100 and V76) is just a special quality version of the EF83. Interchangeable, but the EF83 may have lower life time expectancy and isn't guaranteed the same noise specs.

Jakob E.

 

[gyraf]

Grundig TK19 schematic: http://freeservicemanuals.info/en/servicemanuals/viewmanual/Grundig/TK19L/tk19lu/