User's Guide for the Bass Amplifier
Contents
1. the input signal level For the best signal to noise ratio adjust this control until the Peak LED 3 flashes on strong signals 5 BASS This is the primary low frequency control which allows for 13dB of boost or 15dB of cut at 40HZz ULTRA MID ae o 10 o 10 o 10 o 10 TREBLE MASTER LIMITI oO 7 8 9 6 ULTRA MID This is the primary midrange control Rotate the control to the left of center for a contoured sound more distant less midrange output or to the right of center for a pronounced more up front tone 7 TREBLE This is the primary high fre quency control which allows for 16dB of boost or 21dB of cut at 8kHz 8 MASTER Set the overall output level of the amplifier with this control The Effects Loop and Bal Out 20 21 24 are not affected by the Master control 9 LIMITER The B2RE uses an internal Optocoupler Limiter to assist in keeping the power amplifiers output clean at extreme volume levels All amplifiers begin to clip their output signals as they approach maxi mum output levels resulting in distortion which may damage your speakers To engage the Limiter depress the Limit switch Whenever the amplifier is at full power the adjacent Limit LED will flash This is an indication that the limiter is keep ing peak signals from clipping the output NOTE Playing at full power with the Limiter off will give you increased output power but the sound may be distorted Use discretio2. IED ON THE REAR OF THE UNIT THE OUTLET MUST REMAIN ACCESSIBLE TO DISCONNECT THE UNIT IF A FAULT SHOULD ARISE WHILE IN USE THIS UNIT SHOULD BE UNPLUGGED WHEN NOT IN USE EXPLANATION OF GRAPHICAL SYMBOLS DANGEROUS VOLTAGE IT IS NECESSARY FOR THE USER TO REFER TO THE INSTRUCTION MANUAL EXPLICACION DE SIMBOLOS GRAFICOS A VOLTAJE PELIGROSO A ES NECESARIO QUE EL USUARIO SE REFIERA AL MANUAL DE INSTRUCCIONES EXPLICATION DES SYMBOLES GRAPHIQUES DANGER HAUTE TENSION REFERREZ VOUS AU MANUAL D UTILISATION OQ rz gaz a ap 82RE Bass Amplifier o An introduction To Your New Ampeg B2RE Bass Amplifier Thank you for making one of the best choices you will ever make for your musical career choosing one of the finest bass amplifiers available the Ampeg B2RE Your new B2RE bass amplifier provides many outstanding features in a compact package that takes up only two standard rack spaces Four hundred and fifty watts of pure bass energy total tone control and rugged construction help make this a true performer s bass amp Features In the world of high performance bass amps Ampeg amplifiers stand alone In true Ampeg tradition the B2RE offers you more power performance and flexibility than any other bass amplifier in its class The out standing features of your new amplifier features which set it apart from the competition are listed below 9 BAND GRAPHIC EQ Use as a second channel for bass solos or to sha
3. Jar gt l SO O Pin 1 Z I A Positive af 0 Pin 1 lt Negative Troubleshooting ENT TO RAIN OR MADE INTHE U S A BY SLM ELECTRONICS 1400 FERGUSON AVENUE EFFECTS LOOP IEN JAA Oe PREAMP RETURN OUT ST LOUIS MO 63133 Vie POWER AMP IN SEND In the unlikely event that your B2RE should malfunction take a few minutes to troubleshoot it before you call for service You can save yourself a lot of time and sometimes money by doing it yourself and often the cure for the problem is some thing quite simple NO SOUND LEDs LIGHT LEDs DON T LIGHT Check AC outlet OUTLET OK NO POWER Check power cord fuse power switch Check amp controls check for signal from bass Check speaker Unplug bass touch tip of cable NOCHANGE LOUD HUM Replace cable Check inst pickup NOCHANGE SOUND OK SEE BELOW POOR SOUND Check bass cables POOR SOUND Check speaker s SPEAKER S OK POOR SOUND SOUND OK SPEAKER S DEFECTIVE Replace speaker s POOR SOUND SEE BELOW If the problem isn t covered above or if the steps lead you here then contact your Ampeg dealer for service infor mation Also you should refer your amp to an authorized service center for servicing if it gets dropped has liquid spilled into it or sustains damage to its power cord OQ rz gaz a ap 82RE Bass Ampl
4. S e DO NOT OPERATE NEAR ANY HEAT SOURCE AND DO NOT BLOCK ANY VENTILATION OPENINGS ON THIS APPARATUS FOR PROPER OPERATION THIS UNIT REQUIRES 3 75CM OF WELL VENTILATED SPACE AROUND HEATSINKS AND OTHER AIR FLOW PROVISIONS IN THE CABINET e DO NOT USE THIS APPARATUS NEAR SPLASHING FALLING SPRAYING OR STANDING LIQUIDS e CLEAN ONLY WITH LINT FREE DAMP CLOTH AND DO NOT USE CLEANING AGENTS e ONLY CONNECT POWER CORD TO A POLARIZED SAFETY GROUNDED OUTLET WIRED TO CURRENT ELECTRICAL CODES AND COMPATIBLE WITH VOLTAGE POWER AND FREQUENCY REQUIREMENTS STATED ON THE REAR PANEL OF THE APPARATUS e PROTECT THE POWER CORD FROM DAMAGE DUE TO BEING WALKED ON PINCHED OR STRAINED e UNPLUG THE APPARATUS DURING LIGHTNING STORMS OR WHEN UNUSED FOR LONG PERIODS OF TIME N e ONLY USE ATTACHMENTS ACCESSORIES STANDS OR BRACKETS SPECIFIED BY THE MANUFACTURER FOR SAFE OPERATION AND TO AVOID INJURY ANA e WARNING TO REDUCE THE RISK OF ELECTRIC SHOCK OR FIRE DO NOT EXPOSE THIS UNIT TO RAIN OR MOISTURE e SERVICE MUST BE PERFORMED BY QUALIFIED PERSONNEL e OUR AMPLIFIERS ARE CAPABLE OF PRODUCING HIGH SOUND PRESSURE LEVELS CONTINUED EXPOSURE TO HIGH SOUND PRESSURE LEVELS CAN CAUSE PERMA NENT HEARING IMPAIRMENT OR LOSS USER CAUTION IS ADVISED AND EAR PROTECTION IS RECOMMENDED IF UNIT IS OPERATED AT HIGH VOLUME WARNING THIS UNIT REQUIRES A SAFETY GROUNDED OUTLET WIRED TO CURRENT ELECTRIC CODES HAVING THE LINE SUPPLY VOLTAGE POWER AND FREQUENCY IDENTIF
5. Speakon jack see page 7 WARNING The speaker output of this unit can exceed 10 Watts and could be a shock injury Connection to speakers should be performed by a skilled person in compliance with local building codes Class 2 wiring is required for speaker cables Use of external speakers outside the rat ings stated at the speaker jack may result in a shock injury or damage to the unit NOTE When connecting multiple speaker cabinets to the B2RE keep the overall impedance at or above four ohms The following chart shows the total impedance load when connecting speaker cabinets in parallel B2RE Bass Amplifier 450W 4 OHMS 250W 8 OHMS 4 OHMS MINIMUM 17 of Cabs Total Impedance Cabinet Impedance 18 POWER AMP IN This mono jack allows you to feed the preamp output of another amplifier to the input of the B2RE s internal power amp This bypasses the pre amp circuitry of the B2RE WARNING This jack goes directly into the power amplifier DO NOT connect high level signals to it 19 PREAMP OUT A post EQ signal may be taken from this jack and sent to the house mixing board recording console or external power amplifier 20 EFFECTS LOOP RETURN To use an external effects device connect the OUT PUT of the device to this jack by means of a shielded cable This feeds the processed signal into the Master section of the B2RE 21 EFFECTS LOOP SEND Connect the output from this jack to th
6. User s Guide for the AAav agen eay B2RE Bass Amplifier _ AJar z gee ag 82RE Bass Amplifier oo TABLE OF CONTENTS Important Safeguards and Precautions Introduction Features The Front Panel Controls and Their Use The Rear Panel Some Suggested Settings Rack Mounting A Word About Speakon Connectors Troubleshooting System Block Diagram back cover Technical Specifications back cover CAUTION PRECAUCION ATTENTION RISK OF ELECTRIC SHOCK RIESGO DE CORRIENTAZO RISQUE D ELECTROCUTION A A A A A NEPRE GUIAR A WARNING TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK DO NOT EXPOSE PRECAUCION PARA REDUCIR EL RIESGO DE INCENDIOS O DESCARGAS ELECTRICAS NO PER ATTENTION PROTEGEZ CET APPAREIL DE LA PLUIE ET DE L HUMIDITE AFIN D EVITER TOUT THIS APPARATUS TO RAIN OR MOISTURE TO REDUCE THE RISK OF ELECTRIC MITA QUE ESTE APARATO QUEDE EXPUESTO A LA LLUVIA O LA HUMEDAD PARA DISMINUOIR EL RISQUE D INCENDIE OU D ELECTROCUTION POUR REDUIRE D ELECTROCUTION NE PAS ENLEVER SHOCK DO NOT REMOVE COVER NO USER SERVICEABLE PARTS INSIDE REFER RIESGO DE CORRIENTAZO NO ABRA LA CUBIERTA NO HAY PIEZAS ADENTRO QUE EL USARIO LE COUVERCLE AUCUNE PIECE INTERNE N EST REPRABLE PAR L UTILISATEUR POUR TOUTE SERVICING TO QUALIFIED SERVICE PERSONNEL PUEDO REPARAR DEJE TODO MANTENIMIENTO A LOS TECHNICOS CALIFICADOS REPARATION S ADRESSER A UN TECHNICIEN QUALIFIE IMPORTANT SAFETY INSTRUCTIONS READ FOLLOW HEED AND KEEP ALL INSTRUCTIONS AND WARNING
7. e INPUT of your effects by means of a shielded cable This sends a post EQ signal to your effects 22 20dB 0dB This switch sets the output level at the Balanced Line Output jack 24 The control works independently from the front panel Master control Depressing the switch activates the 20dB pad The result is a signal that is more compatible with the microphone inputs on a mixer POWER PREAMP RETURN AMP IN OUT 18 19 20 23 POST PRE You can select either Pre or Post EQ for the signal at the Balanced Out jack 24 with this switch With the switch in the OUT position the signal at the jacks will be Pre EQ This is a direct output not affected by any EQ or boost settings With the switch depressed the signal is Post EQ and is controlled and modified by the tone controls Graphic EQ and Effects Loop 24 BAL OUT This XLR type connector supplies a balanced preamp output signal for connecting to a house mixing board recording console or external amplifiers with balanced inputs The signal can be set to Pre or Post EQ by the back panel Pre Post switch 23 The level can be adjusted for either mic or line type inputs using the 20dB 0dB switch 22 Some Suggested Settings The setting of the Gain control depends on your particular instrument The Master should be set to produce the appropriate output volume level The Graphic EQ can be used to tailor the amplifier to your speaker cabinets to compensate
8. for room acoustics and to fine tune your sound ROCK ULTRA MID TREBLE MASTER N JAZZ ULTRA MID TREBLE MASTER COUNTRY ULTRA MID TREBLE MASTER N o FUNK POPPING ULTRA MID TREBLE MASTER Rack Mounting When mounting the B2RE into a rack the four bottom feet should be removed to maintain the two rack space height of the amplifier Be sure to keep the feet and their attachment bolts for future use If the feet are reinstalled never use screws which will protrude farther into the amplifier than the original hardware The rack must be a high quality enclosure capable of securely supporting the weight of the amplifier Tighten the mounting screws securely through the amplifier s face plate into the rack rails Check the rack and mounting screws occasionally to ensure a continual ly safe and secure installation A Word About Speakon Connectors Speakon connectors offer a superior method of connecting your amp head to your speaker enclosure and have several advantages over traditional 1 4 connectors Speakons offer better conductivity and signal flow are much better at handling high power and have a locking mechanism that won t allow the speaker cable to be pulled out There are 4 wiring posts inside a Speakon The 2 speaker wires in the cable can be hooked up to different posts for different applications For the B2RE Speakon jack pin 1 is positive pin 1 is negative
9. ifier o Technical Specifications OUTPUT POWER RATING POWER REQUIREMENTS Domestic Export TONE CONTROL RANGE Bass Ultra Mid Treble GRAPHIC EQ RANGE 40Hz 80Hz 150 300 550Hz 1kHz 2 2kHz 4 5kHz 8kHz GAIN SIGNAL TO NOISE RATIO SIZE AND WEIGHT 450 Watts RMS 4 ohm load 250 Watts RMS 8 ohm load 120VAC 60Hz 450VA 100 120VAC 50 60Hz 450VA 230 240VAC 50 60Hz 450VA 13 15dB 40Hz 5 13dB 400Hz 16dB 21dB 8kHz 12dB 9dB 8dB 9dB 8dB 10dB 13dB 62dB 750B typical 19 W x 3 25 H x 12 75 D 26 Ibs Ampeg reserves the right to change specifications without notice System Block Diagram PRE BASS ULTRAMID TREBLE BAL OUT l e SPEAKER OUTPUT SPEAKER OUTPUT DC PROTECT COOLING FAN POWER AMP IN PREAMP UT MASTER EFFECTS LOOP RETURN EFFECTS OOP 9 BAND EQ SEND H H www ampeg com P N 47 577 04 111604
10. n when playing without the Limiter 10 EQ Depress this switch to activate the Graphic EQ The adjacent On LED illumi nates when the EQ is on 11 NINE BAND GRAPHIC EQUALIZER These sliders control the output of the fre quencies indicated above each control The center position of each control is flat no boost or cut 12 ON This LED indicator illuminates when the POWER switch 13 is ON 13 POWER This heavy duty rocker Switch applies the power to the amplifier The amp is ON when the top of the switch is depressed OFF when the bottom of the switch is depressed _ Fhe gee The Rear Panel 14 FAN This temperature controlled vari able speed fan draws cool air into the amplifier which forces heat out through the exhaust vents Never block the vent holes or the fan opening 15 FUSE This protects the unit from dam age due to overload conditions or power line surges If the fuse blows replace it only with the same size and type 16 AC LINE IN The grounded power cord should only be plugged into a grounded power outlet that meets all applicable elec trical codes and is compatible with the volt age power and frequency requirements stated on the rear panel Do not attempt to defeat the safety ground connection 17 SPEAKERS Use these jacks to con nect the amplifier to your speaker s using high quality speaker cables terminated with the appropriate connectors For more infor mation about the
11. pe your sound to your own exacting standards e BALANCED LINE OUTPUT XLR with independent level switch 20dB pad Patch into house consoles mixing boards or external power amplifiers e EFFECTS LOOP For increased intensity and quieter operation of external effects e POWER AMP IN and PREAMP OUT Allows direct access into the power amp and a signal tap from the preamp section for even greater versatility e 1 4 and SPEAKON SPEAKER JACKS For versatility of speaker connections and the superi or performance of Speakon connectors SPEAKON is a registered trademark of Neutrik A G _ Ffova gee ays B2RE Bass Amplifier The Front Panel Controls and Their Use BASS 15dB PEAK 1 2 3 1 INPUT Use this jack to connect your instrument to the amplifier by means of a shielded instrument cable 2 15dB PAD This switch when depressed attenuates the input signal by 15dB Attenuation allows the Gain control 4 to be used over a larger portion of its range If clip ping is indicated with the Gain control near minimum attenuation is needed 3 PEAK This LED illuminates when the signal level into the preamp approaches clipping Adjust the Gain control 4 until a strong signal from your instrument causes this LED to flash NOTE lf the LED flashes frequently with the Gain at a low setting use the 15dB Pad 2 to attenuate the input signal and readjust the Gain 4 GAIN Use this control to adjust
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