1947 Dual Professional
(Tweed Dual Professional)

Year:

 1947

Model:

 Dual Professional

Model No:

 ?

Config:

 Combo

Control Panel:

 Chrome top facing w/ white screened labels, controls numbered 1-12

Conrol Layout:

 Fuse, Power Sw, Pilot Lamp, Tone, Vol, Lo Gain In, Mic Vol, In, In, Mic In

Knobs:

 Black pointer

Cabinet:

 "V" Front, ?" x ?" x ?"

Cab Covering:

 Vertical tweed

Cab Hardware:

 Leather Handle, vertical chrome grille strip, glides

Grille:

 brown mohair

Logo:

 Cabinet mounted, block letter "Fender Dual Professional Fullerton, California" on rectangular tag

Weight:

 ?

Speakers/Load:

 2 x 10"

Speaker Model:

 Jensen PM10-C

Effects:

 None

Output:

 ?

Preamp:

 2 x 6SJ7

Power:

 2 x metal envelope 6L6

Bias:

 Cathode Biased

Rectifier:

 5U4

Phase Inverter:

 6N7 (paraphase)

Comments:
  • The Lo Gain In jack allowed a high output device to be inserted into the signal path. This jack functions much like the modern day equivalent of a "Power Amp In"
  • The Dual Professional used two output transformers mounted to the speaker frames.