Bugera V22

[jmichaelbohn]

the V22 has a RCA plug next to the adjustment for biasing the amp.
what kind of meter plugs into the RCA plug and what is the reading I'm looking for on said meter???? thanks jmb

[Jazz P Bass]

Bugera V22 Bias

http://www.behringerdownload.de/_Bug...9-10_Rev.1.pdf

[jmichaelbohn]

sorry can't get PDF to download ....................any other info?????...jmb

[Jazz P Bass]

Bugera V22

It's a 2.87 meg file.
Takes a while, even on DSL.
The "RCA" jack is a probe hole for your DVM plus lead.
Attach the other lead to ground of the chassis.
The 6L6 range is 44 to 54Vdc.
El34 range is 39-45Vdc.
I believe that they are indicating bias voltage not tube current.

[Enzo]

That is correct.

[jmichaelbohn]

what;s the range for EL-84s?????

[Enzo]

There is none, EL84s don;t fit into the amp.

[jmichaelbohn]

this amp has 2 EL84s

[Jazz P Bass]

Bugera V22

Is this your amp?
Bugera V22
BUGERA: V22
You have a choice on what output tube you would like installed.
6L6 or EL34.
Set bias if switching tube types.
Otherwise, leave it alone, unless you feel there is a problem with the amp.

[Enzo]

Well now I am confused. I believed Jazz, but looking at the linked page for the amp it does indeed say a pair of EL84. My apology.

OK, according to the schematic, this amp is like their others - the bias jack measures bias VOLTAGE not current. You would have to use some other method to adjust the current. Frankly I would adjust it by ear.

Behringer publishes a bias guide for the BUGERA amps, but it only covers the 6l6 and EL34 models. At least so far.