Dating fender vibro champ blackface
See page How to select speakers for speaker recommendations. If you want cleaner and spankier preamp distortion charcteristics, you may replace the V1 or V2 12AX7 preamp tube with 12AT7 and 12AY7.These tubes have different frequency responses than 12AX7, particurlarly when distorting.Finally we point out location of components in the physical layout diagram.Five fundamental tricks to create the holy grail of Fender tone Here is a video demonstrating the effects of some of the mods and tricks described here.This is caused by the lack of gain stage in the reverb recovery circuit which contributes to tube distortion and compression in the preamp section when the amp is pushed.
This mod does not alter the tone significantly when amp is played clean or when only the power amp section distorts.
Our Vibro Champ XD takes the vintage Vibro Champ into a new era with classic styling, simple controls, a good variety of clean and distorted tones and unmistakable tube feel and performance at a remarkable price.
Features include a real tube amp combined with up-to-date extras including versatile amp voicing and superb DSP effects.
As usual the later silverface models were modified to become cleaner and more powerful.
The 70W model from 1978 with master volume and push/pull boost had a huge power transformer and big filter caps.