#3
Usually, V1 is the first preamp tube, and it goes from there to the last power amp tube.
#4
Quote by imgooley
Usually, V1 is the first preamp tube, and it goes from there to the last power amp tube.


Gooley speaketh the truth

-----------------------------------
|------V5 V6 V7 V8--------|
|--OT------------------PT-----|
|------V1 V2 V3 V4--------|
-----------------------------------
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Last edited by Mark G at Feb 24, 2009,
#5
^I should have added that it's usually counted from left to right
#6
Search the internet for a downloadable version of the amps manual or handbook.
#7
V1 is closest to the input, VX (X being the last position) is closest to the power tubes. That's generally speaking, your YMMV.
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#8
Quote by Mark G
Gooley speaketh the truth

-----------------------------------
|------V5 V6 V7 V8--------|
|--OT------------------PT-----|
|------V1 V2 V3 V4--------|
-----------------------------------


It actually goes

PT -> v1, v2, v3... -> OT
#9
in an amp with 4 12AX7's, the V4 is the PI right?
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#10
Quote by bjovi400
in an amp with 4 12AX7's, the V4 is the PI right?


usually. not always (FX loop, reverb etc...). most likely that's the case though.
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#11
V positions are universal in amps.

Some amps like the XXX are V1,V2,V3,V4, starting at the preamp tube next to the input jack.

The 6505 has it's preamp V positions all scattered (V4,V3,V5,V2,V1,V6)

Then there's ENGL who list their power tubes as V1,V2,V3,V4 and the preamp tubes as V5,V6,V7,V8


It's best to find out specifically for the amp you are using.
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#12
Quote by al112987
It actually goes

PT -> v1, v2, v3... -> OT


I believe you, but thats not what my diagram was about. I would have made arrows if I wanted to identify the proper sequence...this is just relative position.

Should have stated it can vary per amp, and that my diagram was based on my ENGL though
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Last edited by Mark G at Feb 25, 2009,
#13
Revamping thread for hijacking purposes
Quote by Van Noord
V positions are universal in amps.

Some amps like the XXX are V1,V2,V3,V4, starting at the preamp tube next to the input jack.

The 6505 has it's preamp V positions all scattered (V4,V3,V5,V2,V1,V6)

Then there's ENGL who list their power tubes as V1,V2,V3,V4 and the preamp tubes as V5,V6,V7,V8


It's best to find out specifically for the amp you are using.

I need to know this part, as the 6505 only has 5 pre-amp tubes, not 6. Any clarification on which one Exactly is V1? or a link to a schematic of it? My owner's manual doesn't state anything about it. Thanks to anybody who can help me out.
Correct me if I'm wrong, but my best guess is it goes (V4, V3, V5, V2, V1).
EDIT: Nevermind, found it
Last edited by bowen at Mar 7, 2009,
#16
closest preamp tube to power tubes is usually PI. the opposite would be V1
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