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metfan838
New
Username: metfan838

Post Number: 1
Registered: 10-2010
Posted on Wednesday, October 27, 2010 - 5:46 pm:   Edit Post

I know Dave Gilmour uses the F-2b and has been for years. The gilmour web-site said they changed capacitor values to make it less bassy and added a preamp tube...any suggestions.
elwoodblue
Senior Member
Username: elwoodblue

Post Number: 1118
Registered: 6-2002
Posted on Wednesday, October 27, 2010 - 6:12 pm:   Edit Post

Was the F-2b in his regular rig?
I remember reading it was used for the Leslie signal path.
davehouck
Moderator
Username: davehouck

Post Number: 9776
Registered: 5-2002
Posted on Wednesday, October 27, 2010 - 6:36 pm:   Edit Post

I don't know Elwood; but a quick google found this.
elwoodblue
Senior Member
Username: elwoodblue

Post Number: 1119
Registered: 6-2002
Posted on Wednesday, October 27, 2010 - 6:51 pm:   Edit Post

Thanks Dave,
...and Welcome Eric...good question,
I wonder if the extra tube stage was added in the front, if so you might be able to simulate what Gilmour was getting by putting something like a BK tube driver before the F-2B.
lbpesq
Senior Member
Username: lbpesq

Post Number: 4623
Registered: 7-2004
Posted on Wednesday, October 27, 2010 - 7:03 pm:   Edit Post

I use an F-2B through a Mesa 50/50, along with a Demeter Real Tube Reverb and a SF-2 in my guitar rack rig. The F-2B works fine as a guitar preamp. In fact, IIRC, the F-2B is based on the Fender Dual Showman, a guitar amp.

Bill, tgo
metfan838
New
Username: metfan838

Post Number: 2
Registered: 10-2010
Posted on Thursday, October 28, 2010 - 7:05 pm:   Edit Post

Thanks guys...I googled this topic for our and got many different opinions...It sounds great now but I just like to tweak on things
metfan838
New
Username: metfan838

Post Number: 3
Registered: 10-2010
Posted on Thursday, October 28, 2010 - 7:24 pm:   Edit Post

just googled gilmour alembic mods and got my answer. The tube was added as a cathode follower to lower impedence
elwoodblue
Senior Member
Username: elwoodblue

Post Number: 1120
Registered: 6-2002
Posted on Thursday, October 28, 2010 - 9:23 pm:   Edit Post

Cool,
I see that mentioned in the thread here
I see how a lower impedance would be good for Gilmour's rig considering how many pedals/processors might follow the F-2B.


Half way down this page it mentions:
"To optimize the unit for guitar, it was modified by adding an extra tube in the preamp section for a little more drive, lowering the impedance in the output and changing the capacitor in the bottom end to eliminate some of the lows to prevent “boominess” in closed-back cabinets."
gtrguy
Advanced Member
Username: gtrguy

Post Number: 319
Registered: 9-2004
Posted on Sunday, October 31, 2010 - 4:36 pm:   Edit Post

Mine is set up so you can easily cascade the first tube stage into the next, but it does not do anything exciting for me that way.

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