Ampeg BA-112 User's Manual
Contents
1. BASS AMPLIFIER Owner s Manual A Prraguezag BA 112 BASS AMPLIFIER TOP PANEL TREBLE ULTRA MID ee e J pl ti BASS 1 0dB INPUT Connect your passive bass guitar here using a shielded instrument cable This input is not padded and is best suited for basses without active electronics or hot pickups 2 15dB INPUT Connect your active bass here using a shielded instrument cable This input is padded 15dB and is best suited for basses with active electronics and or hot pickups 3 VOLUME Use this control in conjunction with your instrument s volume controls to adjust the output level of the amplifier The BA 112 employs a built in limiter to keep the output clean at full power 4 STYLE This five position switch allows you to vary the tone of the amplifier Experiment with the Style and other eq con trols 5 6 7 for the results which suit you best 5 TREBLE Use this control along with the style control to adjust the high frequency level of the amplifier The treble control has a 36dB range at 10kHz 6 ULTRA MID Use this control along with the style control to adjust the midrange level of the amplifier This control has a 30dB range 500Hz 7 BASS Use this control along with the style control to adjust the low frequency level of the amplifier This control has a 36dB range 50Hz 8 CD INPUT Use these RCA jacks to con nect the line level or headphones output of a CD2. ED TO PROVIDE SAFE AND RELIABLE OPERATION IN ORDER TO PROLONG THE LIFE OF THE UNIT AND PREVENT ACCIDENTAL DAMAGES OR INJURY PLEASE FOLLOW THESE PRECAUTIONARY GUIDELINES CAUTION 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 PROPERLY GROUNDED AC POWER OUTLET WARNING 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 EXPLANATION OF GRAPHICAL SYMBOLS DANGEROUS VOLTAGE IT IS NECESSARY FOR THE USER TO REFER TO THE INSTRUCTION MANUAL 3 VOLTAJE PELIGROSO ES NECESARIO QUE EL USUARIO SE REFIERA AL MANUAL DE INSTRUCCIONES EXBLIGAGION DE SIMBOLOSIGRAFICOS DANGER HAUTE TENSION REFERREZ VOUS AU MANUAL D UTILISATION EXPLICATION DES SYMBOLES GRAPHIQUES SGEFAHLICHE SPANNUNG UNBEDINGT IN DER BEDIENUNGSANLEITUNG NACHSCHLAGEN A Prraguezag BA 112 BASS AMPLIFIER TECHNICAL SPECIFICATIONS OUTPUT POWER RATING MAX INPUT LEVELS LINE OUT LEVEL HEADPHONE OUT LEVEL GAIN STYLE TREBLE ULTRA MID BASS SPEAKER SPECS POWER REQUIREMEN
3. TS SIZE AND WEIGHT 50 Watts at 8 ohms OdB Input 800mV RMS 15dB Input 4 62V RMS CD Input 3 5V RMS 1 75V RMS 2 75V RMS 40dB 1 25dB 500Hz 12dB 500Hz 3 flat 4 5dB 2kHz and above 5 6dB 50Hz and below 36dB range 10kHz 30dB range 500Hz 36dB range 50Hz 12 50 w 8 ohm 1 5 voice coil dia 30 oz magnet 120VAC 60Hz 70VA 100 115VAC 50 60Hz 70VA 230VAC 50 60Hz 70VA 17 1 4 W x 18 H x 13 1 4 D 39 Ibs SYSTEM BLOCK DIAGRAM 0dB INPUT 150B INPUT 1 NH VOLUME cD STYLE INPUTS TONE CIRCUI SPEAKER TON LIMITER amp POWER AMP HEAD PHONE BASS ULTRAMID TREBLE L Ampeg continually develops new products as well as improves existing ones For this reason the specifications and information in this manual are subject to change without notice ay A www ampeg com Ampeg is proudly Made in America 1999 SLM Electronics 1400 Ferguson Avenue St Louis MO 63133 U S A 47 054 01 03 99
4. ct If the unit has been subjected to any of the preceding abuses have it looked at by an authorized service center e NEVER set the amplifier on a support that might give out under its weight e Always keep the total speaker impedance at or above the rated load e Unplug the amplifier before cleaning it NEVER spray liquid cleaners onto the amplifier Wipe it with a slightly dampened lint free cloth to remove dirt and film e Don t 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 e 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 CAUTION ATTENTION VORSICHT PSARAS OUAR DO NOT OPEN NE PAS OUVRIR NICHT OFFENEN CAUTION TO REDUCE THE RISK OF ELECTRIC SHOCK ATTENTION POUR REDUIRE D ELECTROCUTION NE PAS VORSICHT ZUR MINIMIERUNG ELEKTRISCHER SCHLAGGEFAHR NICHT DO NOT REMOVE COVER ENLEVER LE COUVERCLE AUCUNE PIECE INTERNE N EST REPRABLE DEN DECKEL ABENHMEN INTERNE TEILE KONNEN NICHT VOM SERVICEABLE PARTS II PAR L UTILISATEUR POUR TOUTE REPARATION S ADRESSER A UN BENUTZER GEWARTET WERDEN DIE WARTUNG IS QUALIFIZIERTEM NO USER S INSIDE REFER SERVICING TO QUALIFIED SERVICE PERSONNEL TECHNICIEN QUALIFIE WARTUNGSPERSONAL ZU UBERLASSEN THIS EQUIPMENT HAS BEEN DESIGNED AND ENGINEER
5. player or tape deck The two jacks sum the stereo signal into a mono signal which is fed into the BA 112 just prior to its power amplifier Use the volume control on the CD or tape player to control the level of this signal 9 LINE OUT This jack supplies a post eq unbalanced line level signal for connecting to a house sound board recording unit or external amplifier The level of this signal is controlled by the Volume control 3 10 HEADPHONES For private practice sessions plug a pair of headphones here The internal speaker is disconnected when the headphones jack is used 11 ONLED This LED lights when the amplifier is plugged in and turned on 12 POWER Use this switch to turn the amplifier on and off on is in the up position A Prraguezag BA 112 BASS AMPLIFIER IMPORTANT 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 fol lowing rules can help prevent damage to your amplifier yourself and others e The amplifier is equipped with a three pronged AC power cord To reduce the risk of electrical shock NEVER remove or otherwise attempt to defeat the ground pin of the power cord e Connect the amplifier ONLY to a properly grounded AC outlet of the prop er voltage for your amp e Avoid sudden temperature extremes rain and moisture Also avoid sudden and intense impa
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