Ampeg svt 2 pro users guide
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2Important Safeguards and Precautions: All Ampeg products are designed for continuous safe operation, as long as common sense is used and steps are taken to help avoid certain problems. Abiding by the following rules can help prevent damage to your preamp, yourself and others. -The amplifier is equipped with a three-pronged AC power cord. To reduce the risk of electrical shock, NEVERremove or otherwise attempt to defeat the ground pin of the power cord. -Connect the amplifier ONLYto a properly grounded AC outlet of the proper voltage for your amp. -Avoid sudden temperature extremes, rain and moisture. Also, avoid sudden and intense impact. (If the unit has been subjected to any of the preceding abuses, have it looked at by an authorized service center.) -Never set the amplifier on a support that might give out under its weight. -When using tall or stacked speaker cabinets, use them ONLYon a level surface. NEVER set tall or stacked cabinets on a surface with more than a five degree incline since tipping or falling could occur, possibly caus- ing serious injuries. -Always keep the total speaker impedance at or above the rated load. -Unplug the amplifier before cleaning it. NEVER spray liquid cleaners onto the amp. Wipe it with a slightly dampened, lint-free cloth to remove dirt and film. -Dont use the amplifier if it has sustained damage to the chassis, controls, or power cord. Refer the unit to an authorized service center for inspection. -Amplifiers capable of producing high volume levels are also capable of inflicting permanent hearing loss or damage, if the exposure to such levels is prolonged. Such damage is progressive and irreversible! CAUTIONRISK OF ELECTRIC SHOCK DO NOT OPEN CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE COVER. NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL. ATTENTIONRISQUE D'ELECTROCUTION NE PAS OUVRIR ATTENTION: POUR REDUIRE D'ELECTROCUTION NE PAS ENLEVER LE COUVERCLE. AUCUNE PIECE INTERNE N'EST REPRABLE PAR L'UTILISATEUR. POUR TOUTE REPARATION, S'ADRESSER A UN TECHNICIEN QUALIFIE. VORSICHTELEKTRISCHE SCHLAGGEFAHR NICHT OFFENEN VORSICHT: ZUR MINIMIERUNG ELEKTRISCHER SCHLAGGEFAHR NICHT DEN DECKEL ABENHMEN. INTERNE TEILE KONNEN NICHT VOM BENUTZER GEWARTET WERDEN. DIE WARTUNG IS QUALIFIZIERTEM WARTUNGSPERSONAL ZU UBERLASSEN. THIS EQUIPMENT HAS BEEN DESIGNED AND ENGINEERED TO PROVIDE SAFE AND RELIABLE OPERATION. IN ORDER TO PROLONG THE LIFE OF THE UNITAND PREVENT ACCIDEN- TAL DAMAGES OR INJURY, PLEASE FOLLOW THESE PRECAUTIONARY GUIDELINES: WARNING:TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT OPEN CHASSIS; DO NOT DEFEAT OR REMOVE THE GROUND PIN OF THE POWER CORD; CONNECT ONLY TO A PROP- ERLY GROUNDED AC POWER OUTLET. CAUTION:TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE. CAUTION:NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL. CAUTION:OUR AMPLIFIERS ARE CAPABLE OF PRODUCING HIGH SOUND PRESSURE LEVELS. CONTINUED EXPOSURE TO HIGH SOUND PRESSURE LEVELS CAN CAUSE PERMANENT HEARING IMPAIRMENT OR LOSS. USER CAUTION IS ADVISED AND EAR PROTECTION IS RECOMMENDED IF UNIT IS OPERATED AT HIGH VOLUME. The chart below shows the U.S. Government Occupational Safety and Health Administration (OSHA) regulations which were in effect at the time of this publication for permissible noise exposure, per 29CRF1910, Table G-16. According to OSHA, any exposure in excess of those listed above could result in some hearing loss. "IT IS NECESSARY FOR THE USER TO REFER TO THE INSTRUCTION MANUAL" "REFERREZ-VOUS AU MANUAL D'UTILISATION" "UNBEDINGT IN DER BEDIENUNGSANLEITUNG NACHSCHLAGEN" EXPLANATION OF GRAPHICAL SYMBOLS: "DANGEROUS VOLTAGE" "DANGER HAUTE TENSION" "GEFAHLICHE SPANNUNG"= = SOUND LEVEL dBA DURATION PER DAY SLOW RESPONSE IN HOURS 90 8 92 6 95 4 97 3 100 2SOUND LEVEL dBA DURATION PER DAY SLOW RESPONSE IN HOURS 102 1-1/2 105 1 11 0 1 / 2 115 1/4 or less TABLE OF CONTENTS Important Safeguards and Precautions . . . . . . . . . . . . . . .2 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 System Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . .3 The Front Panel Controls and Their Use . . . . . . . . . . . . . .4 The Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 Some Suggested Settings . . . . . . . . . . . . . . . . . . . . . . . . .6 Changing the Tubes . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 Setting Tube Bias . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . .back cover Technical Specifications . . . . . . . . . . . . . . . . . . .back cover SVT-2 PRO Bass Amplifier
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3 An Introduction to your new Ampeg SVT-2 PRO Bass Amplifier The harmonically rich sound and legendary performance of the AMPEG SVT are redefined in the SVT-2 PRO. This dynamically powerful bass amplifier delivers a thundering 300 watts of unsurpassed quality, reliability and tonal flexibility, offering the classic vibrancy of tubes as well as contemporary features. All of the features and controls of your SVT-2 PRO are covered in detail within the pages of this owners guide. We recommend going over them before you use the amplifier. Features In the world of high performance bass amps, Ampegs SVT amplifiers stand alone. Keeping with true Ampeg tra- dition, the SVT-2 PRO Bass Amplifier offers you more performance and flexibility than any other amplifier in its class. Listed below are some of the outstanding features of your new preamp - features which set it apart from the competition! Additional information on these features can be found on the pages indicated. -ATTENUATOR:A switchable input pad, this feature is perfect for basses with active electronics or very hot pickups (page 4). -MUTE SWITCH:Lets you cut the sound from the amp, letting you tune your bass in private (page 4). - ULTRA LOW, ULTRA HIGH AND BRIGHT SWITCHES:Lets you tailor your sound in many different ways with the touch of a button (page 4). -5-POSITION MIDRANGE SELECTOR:Take your pick from the five center frequency points available to get just the right midrange voice (page 4). -9-BAND GRAPHIC EQ:Use as a second channel for bass solos, or to shape your sound to your own exacting standards. An independent level control lets you adjust the Graphic EQ volume. Switchable at front panel or with a footswitch (page 4). -BIAS ADJUSTMENT CONTROLS:Let you adjust the tube bias for proper operation (pages 5,7). -SLAVE OUT:Use for powering another amp from the SVT-2 PROs preamp (page 5). System Block Diagram SVT-2 PRO Bass Amplifier GAIN LEVEL INPUT -15dB PAD BUFFER TUNER OUT FREQUENCY PEAK LED DRIVE MID BRIGHT EQ ON ULTRA LOW BASS TREBLE ULTRA HIGH IMPEDANCE 4 OHMS 2 OHMS MUTE PRE/POST LEVEL MASTER BIAS ADJUST BALANCED OUT GRAPHIC EQ EFFECTS SENDEFFECTS RETURN BUFFER PREAMP OUT POWER AMP PROTECTION SLAVE OUT 1/4" JACK 1/4" JACK SPEAKON ® JACK SPEAKER OUTPUTS PWR AMP INPUT PWR AMP POWER STDBY FAULT BIAS INDICATORS 1+ 2+ 1- 2- GRAPHIC EQ MUTE FOOTSWITCH SWITCHING CIRCUIT