RE: [Harp-L] Fender Vibrosonic

["Priest, Jim" <Jim.Priest@xxxxxx>]

Thanks for the suggestions Dave. Steve hasn't changed the PI so I'll give it a go. I'd actually forgotten that I already have a 12AT7 there. I'll have a play around and report back on the results. It may take a while... the other drawback to the Vibrosonic that I hadn't mentioned is that my wife has banned me from using it in the house!

Jim

________________________________
From: David Harris [mailto:snakehead_1@xxxxxxxxx]
Sent: 30 April 2008 12:39
To: Priest, Jim; harp-l@xxxxxxxxxx
Subject: RE: [Harp-L] Fender Vibrosonic

Jim,
Great job on your project.

Your 12AT7 idea in the pre-amp Normal channel makes sense.

You didn't say if the tech replaced the phase inverter tube.  If he lowered that tube to a 12AU7, you would defintely get more breakup.

You initially mentioned that you had a 12AT7 in the phase inverter.  Just switch the pre-amp normal and phase inverter tubes.  You would then have a 12AU7 in the phase inverter and a 12AT7 in the pre-amp Normal channel.  That would be a free way to beef up you amp.  :-)

These changes should make the amp growl a little.  Heh heh.  Of course the right mic would be the finishing touch.  A nice crysal mic would sound badass on your amp.

All in all, you are very close to harp amp nirvana.

The best part is you can do the tube swaps yourself now that the amp has been given a clean bill of health.

Please let me know how the tube changes go.

Dave