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Speakers The Bandmaster’s 2×12″ speaker cabinet was from the Fender factory loaded with either Jensen C12n or Oxford 12T6.
Unfortunately does the diode rectifier not offer any options for rectifier tube swaps to select among different plate voltages, clean headroom levels and sag characteristics.
You’ll need schematics to implement some of these mods. We usually start with explaining a mod from a functional perspective where we relate to components in the logical schematics diagram.
A smaller output transformer will introduce sag and compression in the power amp section.
The blackface Bandmaster is therefore ideal for those who look for a pure Fender clean sound without making ones ears bleed.
These tubes have different frequency responses than 12AX7, particurlarly when distorting.
The blackface head had a diode recifier, one normal channel and a vibrato channel with no reverb.