Fender Twin/Vibrosonic tube placement

Steve Spitz · Post by **Steve Spitz** » 24 May 2003 9:40 am

I`m Re-tubing, But I don`t need to replace the vibrato tubes in the pre-amp section, as I dont use the amp vibrato. My question: are these tubes the two farthest away from the power tube section? Can I get by not replacing these if I don`t use vibrato? Thanks for your help. Steve

Buck Dilly · Post by **Buck Dilly** » 24 May 2003 11:01 am

If I am not mistaken, all tubes are dual function and therefore need replacing.

Ken Fox · Post by **Ken Fox** » 24 May 2003 11:51 am

V1, 12AX7/7025 is channel 1 preamp
V2, 12AX7/7025 is channel 2 pream3
V3, 12AT7 is reverb drive
V4 ,12AX7/7025 1/2 is reverb recovery 1/2 is channel 2 preamp (mix of wet and dry signals)
V5, 12AX7/7025 is tremolo oscillator
V6, 12AT7 is inverter (final mix and amplification of channel 1 and 2)
V7-10, 6L6GC are the power tubes

Jon Light (deceased) · Post by **Jon Light (deceased)** » 24 May 2003 12:33 pm

Just redundant info----here's a chart:
http://www.kcanostubes.com/layout.htm