ORANGE OR112M Overdrive Series Two 1979 EX+

Input - F.A.C. - Bass - Treble - Presence - Gain - Master - Echo Send - Echo Return - Pilot Light - Power - STANDBY SWITCH 2 x 12AX7 4 x EL34 Fixed bias

1/2 x 12AX7 Cathodyne

http://www.hendrixguitars.com/Orange.htm

Control Panel Layout:Input - F.A.C. - Bass - Treble - Presence - Gain - Master - Echo Send - Echo Return - Pilot Light - Power Switch Rear Panel Layout:Mains chord(fixed!) - 2 Fuse holders - (no slave output) - Impedance switch - 2 Speaker outputs  Output:120 Watts Preamp tubes:2 x 12AX7 Power tubes:4 x EL34 Bias:Fixed bias Rectifier:solid state Phase Inverter:1/2 x 12AX7 Cathodyne

Overdrive amps were basically Graphic amps equipped with a master volume. This was considered a big improvement, especially for players that liked play with overdriven Orange amps without having the deafening volumes of the non-master Graphics.

Model:OR120 Model Number:OR120 Control Panel Layout:Input - F.A.C. - Bass - Treble - H.F.Boost - Gain - Reverb Send - Reverb Return - Pilot Light - Power Rear Panel Layout:Mains chord - Voltage selector - 2 fuse holders - Slave output - Impedance selector - 2 speakers outs Speakers/Load:4/8/16 Ohms  Output:120 Watts Preamp tubes:1.5 x 12AX7 Power tubes:4 x EL34 Bias:Fixed bias Rectifier:solid state Phase Inverter:Cathodyne type: 1/2 x 12ax7

 "Graphic" 120 and OR120 are the same thing. The "Graphic" designation came about from the ORS100 models, which had large graphics on the front with no text. The graphics depicted the knob's function, i.e. the twin mountain peaks were "Echo," the speaker was "Gain," and so on. The ORS100 models were made from about 1970 - 1972 and are the only ones to feature a plexiglas faceplate. Around 1972, the OR120 models appeared featuring smaller graphics and text on a steel faceplate. These and the lookalike "Overdrive" models are the most common Orange amps I have seen for sale. Incidentally, the ORS100 is a 100-watt amp while the OR120 is a 120-watt amp.

The first amps that Orange made were called "Graphic". A typical style element of these amps was the front that had only pictures to describe the controls. They also have a Frequency Analyzing Control. This is a kind of mid tone control by a six position switch.

There seems to be some confusion about which amps are GRAPHICs. I received a nice explanation on this from Christopher S. Dwyer.
>> "Graphic" 120 and OR120 are the same thing. The "Graphic" designation came about from the ORS100 models, which had large graphics on the front with no text. The graphics depicted the knob's function, i.e. the twin mountain peaks were "Echo," the speaker was "Gain," and so on. The ORS100 models were made from about 1970 - 1972 and are the only ones to feature a plexiglas faceplate. Around 1972, the OR120 models appeared featuring smaller graphics and text on a steel faceplate. These and the lookalike "Overdrive" models are the most common Orange amps I have seen for sale. Incidentally, the ORS100 is a 100-watt amp while the OR120 is a 120-watt amp.

http://users.telenet.be/orangefg/overdrive_page.htm

http://www.geocities.com/geertjacobs/oldindex.htm

http://www.geocities.com/diytech_ct/timeline.html

http://users.telenet.be/orangefg/orange_mods.htm#_schematics

http://users.telenet.be/orangefg/overdrive_page.htm

http://www.geocities.com/geertjacobs/oldindex.htm

http://www.geocities.com/diytech_ct/timeline.html

http://users.telenet.be/orangefg/orange_mods.htm#_schematics

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