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A N T H E M A M P 1 O P E R A T I N G M A N U A L
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C O N T E N T S page Parts List ..................................................................................................................1 Front & Rear Panels ................................................................................................2 Control Functions ....................................................................................................3 Connection Functions..............................................................................................
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We at Sonic Frontiers hope you will derive many years WHAT’S IN THE BOX? of listening pleasure with your new Anthem Amp 1. This In addition to the Amp 1, it’s cover, and the operating Operating Manual contains important information regard- manual you are presently reading (with associated inserts ing the operation and care of the Amp 1. and warranty card), there are a few more items to take Be sure to read this manual carefully and follow these inventory of before steps are taken to make the Ant
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A B D E D C 2
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C O N T R O L F U N C T I O N S A L E D E PREAMPLIFIER INPUT When the LED is lighted the Amp 1 is “ON”, receiving This input accepts RCA input connections from an power from the power supply. external preamp or crossover; connect left channel to left channel and right channel to right channel. B ON-OFF BUTTON When in the ON position (button depressed), high voltage power is received by the Amp 1 circuitry from the power source. Due to the warm up characteristics of tubes, it will take 30 second
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S E T T I N G U P The Amp 1 comes with seven (7) tubes, as follows: tics of the output tubes shipped with this unit. The Bias adjustments should remain reasonably stable over the life 12AX7 (V2) FIRST STAGE AMPLIFICATION TUBE of the output tubes and should not require periodic adjust- The first stage of amplification in the amplifier section of ment until the EL34 tubes are replaced. the Amp 1 is achieved through the use of this dual triode, Should one of the EL34 tubes fail, it may be replaced
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INSERTION OF THE TUBES O P E R A T I O N 1. Using the screwdriver supplied, remove the cover of the Amp 1. For your convenience, only two of the screws are Before plugging in the Amp 1, check to see that the unit is installed at the factory. configured for the correct AC line voltage for country of use. The operating AC line voltage is indicated on the side 2. When handling the tubes, it is recommended that the of the shipping box. If the Amp 1 is set incorrectly for the cotton gloves provided
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4. Be sure the rest of the system is functioning properly (i.e. T R O U B L E S H O O T I N G source unit, power amplifiers, cables and connections, etc.). If at any time the Amp 1 fails to work properly, consult this checklist: 5. With tubes, fuses, covers and power cords in place, check that the LED (A) is lighted (glowing light green). If all of the 1. Check that the AC Detachable Power Cord is plugged into above troubleshooting steps have been followed and the LED the Amp 1 Detachable Power
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BREAK-IN TIME PACKING MAT E R I A L S As with all audio electronic products, the ultimate sonic char- Please retain all of the packing material and shipping boxes acter of the Amp 1 will not be realized until and unless the for your Amp 1. They are custom designed to prevent ship- unit receives a minimum of approximately 70 hours of signal ping damage from occurring. Sonic Frontiers, Inc. will break-in time (i.e. the Amp 1 is on and outputting a signal). accept no responsibility for any damage o
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4. Sonic Frontiers, Inc. shall not be responsible in any way for consequential or indirect damages or liabilities resulting from the use and operation of the product covered herein or resulting from any breach of this warranty or any implied warranty relating to said product. During this period, Sonic Frontiers, Inc. will repair or replace any defective components free of charge. A Return Authorization Number (RA Number) is required before any product is returned to our factory for any rea- son.
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BIAS ADJUSTMENT 3. Connect the multimeter’s negative test lead to the AMP 1’s left channel output COM or black binding post on the WARNING: Hazardous and potentially rear panel. lethal voltages! The Bias adjustment procedure described below involves 4. Carefully apply line voltage to the amplifier and observe working with equipment covers off and power applied, exposing the operator that all the tube filaments light. As the amplifier is warming to potentially hazardous or lethal volt- up touch e
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TECHNICAL SPECIFICAT I O N S N O T E : Specification ratings based on the nominal power line input for the country in which it is used POWER OUTPUT: 40 watts per channel continuous both channels driven, into 4 or 8 Ohms (user selectable), 20Hz to 20kHz with ≤ 1% THD Typical power at clipping (1% THD @ 1kHz) 55 watts I M D : ≤ 1% at rated power, SMPTE 4:1 method POWER BANDWIDTH (40 WAT T ) : 10Hz to 65kHz (-3 dB points) 15Hz to 33kHz (-0.5 dB points) FREQUENCY RESPONSE (1 WAT T ) : 10Hz to 75
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