Owner’s Manual
Heritage R-12R Guitar Amplifier IMPORTANT SAFETY INSTRUCTIONS 1. Read these instructions. been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped. 2. Keep these instructions. 3. Heed all warnings. 4. Follow all instructions. 5. Do not use this apparatus near water. 6. Clean only with a dry cloth. 7. Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions. 8.
Heritage R-12R Guitar Amplifier NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications.
Heritage R-12R Guitar Amplifier Features: Table of Contents: • Hand-wired and assembled in the U.S.A.
Heritage R-12R Guitar Amplifier Heritage R-12R Top Panel ON FULL 4 5 TREMELO 6 STANDBY 2 1 1. 2. VINTAGE 2 6 9 0 10 4 7 3 8 2 1 OFF 5 4 7 3 ECHO 5 6 8 2 1 9 0 10 4 7 3 5 6 8 2 1 9 0 10 4 7 3 5 6 7 3 8 2 1 9 B T 8 1 9 0 10 MODEL R-12R INTENSITY SPEED DIMENSION TONE VOLUME 3 4 5 6 7 8 ON/OFF SWITCH: Use this switch to turn the overall system power on or off.
Heritage R-12R Guitar Amplifier Heritage R-12R Rear Panel 11 12, 13 11. EXT SPEAKER: Use this 1/4" TS output jack to connect the amplifier to an 8 extension speaker. The internal speaker remains active when an extension speaker is connected. Use a speaker cable with 1/4" TS ends only to make the connection. Do not use instrument cables as they may overheat. 12.
Heritage R-12R Guitar Amplifier Important information about tubes A brief history of the tube: In 1883, Thomas Edison discovered that electrons would flow from a suspended filament when enclosed in an evacuated lamp. Years later, in 1905, John Ambrose Fleming expanded on Edison’s discovery and created the “Fleming Valve”. Then, in 1907, Dr. Lee de Forest added a third component – the grid – to “Fleming’s Valve” and the vacuum tube was a fact of life. The door to electronic amplification was now open.
Heritage R-12R Guitar Amplifier Tube types and usage continued... Power tubes are the largest tubes used in an amplifier, generate the most heat and wear out the fastest. These tubes convert the low-level, conditioned signal from the preamplifier into a level that is sufficient to drive the speakers. There are several types of power tubes available, each of which offers a different performance/sound characteristic. The Ampeg Heritage R-12R uses two 6L6GC.
Heritage R-12R Guitar Amplifier The nature of tubes continued... Whenever replacing power tube(s): • Always have the amplifier’s bias voltage checked by a qualified service center. Improper bias voltage will cause degradation in performance and possibly damage tubes and/or the amplifier. (See the section below titled “The importance of proper biasing” for more information on this subject). • We highly recommend replacing the driver tube(s), as well.
BRIGHT INPUTS NORMAL 10 HPF 1/2 6SN7 V3A 1/2 6SL7 V1A SEND TONE VOLUME TONE CONTROL CIRCUITRY RETURN REVERB DRY 1/2 6SN7 V2A 1/2 6SN7 DIMENSION V3B 1/2 6SN7 V2B SPEED 6L6GC V6 1/2 6SL7 V4B 6L6GC V5 REVERB / TREMOLO FOOTSWITCH INTENSITY 1/2 6SL7 V4A 1/2 6SL7 V1B TREMOLO FULL / STANDBY / VINTAGE SWITCH B+ 5AR4 V7 TO FILAMENTS 4Ω 8Ω SPEAKER OUTPUTS EXTERNAL SPEAKER 12" 8 Ω CELESTION ALNICO GOLD SPEAKER POWER SWITCH Heritage R-12R Guitar Amplifier Heritage R-12R Bl
Heritage R-12R Guitar Amplifier HERITAGE R-12R TECHNICAL SPECIFICATIONS Preamp Tube 2 x 6SL7 & 2 x 6SN7 Power Amp Tube 2 x 6L6GC Rectifier Tube 1 x 5AR4 Dual Inputs Normal and Bright Selectable Class / Bias Vintage – 15 watts (triode) Full – 30 watts (tetrode) Output Power Rating (8 30 watts rms @ 10% THD ) Tremolo Reverb Tube-driven, bias-vary Tube-driven, long tank, two spring, long decay Speaker Outputs 1x8 1x8 Main: Ext: (Heritage R-12R cabinet)
Heritage R-12R Guitar Amplifier Service Information If you are having a problem with the Heritage R-12R, please visit our website (www.ampeg.com) and click on Support for service information or call Technical Support at 1-800-898-3211 Monday – Friday during normal business hours, Pacific Time, to receive assistance. If you are outside of the U.S., contact your local distributor for technical support and service.
