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Post new topic Resurrecting a Fender Silverface Vibrosonic Chassis
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Author Topic:  Resurrecting a Fender Silverface Vibrosonic Chassis
Erv Niehaus


From:
Litchfield, MN, USA
Post  Posted 12 Oct 2017 7:53 am    
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Michael,
I agree with your assessment.
I play through a Vibrosonic Reverb and let my guitar slinger use the Twin Reverb. Very Happy
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Michael Brebes

 

From:
Northridge CA
Post  Posted 13 Oct 2017 3:34 pm    
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With the Reverb on both channels, the Vibrosonic sounds good as an amp for both, with steel in one channel and guitar in the other.
_________________
Michael Brebes
Instrument/amp/ pickup repair
MSA D10 Classic/Rickenbacher B6/
Dickerson MOTS/Dobro D32 Hawaiian/
Goldtone Paul Beard Reso

Mesa Boogie Studio Pre/Hafler 3000
RP1/MPX100
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Carl Mesrobian


From:
Salem, Massachusetts, USA
Post  Posted 14 Oct 2017 6:16 am    
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Steven Paris wrote:
Nice work so far!!
Just musing.....some interesting "improvements" to the original might be:
DC-elevated heater supply
Metal-film resistors in first preamp section
Larger choke and larger-value power supply capacitors
Let us know how she sounds!!


Yes!

And you might also add a bias balance in addition to bias voltage adjust. I don't have a design but have done it on a drip edge Bassman head. It gives you the best of both worlds. I made a small bracket that bolted to a transformer bolt and added a 10K bias pot that regulates the voltage to the balance pot. The yellow wire will be swapped to the new pot and some resistors will be changed or added. The red/yellow wire is underneath and has no connection to the pot. This is one I'm doing:




I have a Quad Reverb on the shelf that I should upgrade like yours Smile
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--carl

"The better it gets, the fewer of us know it." Ray Brown
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