Ampeg SVT-150H User's Manual
Contents
1. Owner s Guide for the SVT 150H Bass Amplifier Made in the U S A by bl 2 TABLE OF CONTENTS Introduction Features Important Safeguards and Precautions The Front Panel Controls and Their Use The Rear Panel Some Suggested Settings Troubleshooting System Block Diagram Technical Specifications An Introduction to your new Ampeg Features SVT 150H Bass Amplifier First of all thank you for making what could be one of the best choices you could ever make concerning your musical career choosing one of the finest bass amplifiers available an Ampeg SVT 150H Your new bass amplifier offers you many outstanding features such as 150 watts of pure bass energy total tone control and rugged construction which make it a true per former s bass amp tion nal effects e DRIVE CONTROL To add harmonic content for tube like overdrive Important Safeguards and Precautions In the world of high performance bass amps Ampeg amplifiers stand alone In true Ampeg tradition your new SVT 150H offers you more power performance and flexibility than any other bass ampli fier in its class Here are just some of the outstanding features of your new amplifier features which set it apart from the competi e 9 BAND GRAPHIC EQ Use as a second channel for bass solos or to shape your sound to your own exacting standards e BALANCED LI2. allow ing remote control of the Graphic EQ on off function When a footswitch is used the front panel Master Pull EQ On switch 11 is bypassed The Rear Panel 15 FUSIBLE Esto protege a la unidad con tra da os debidos a condiciones de sobrecar ga sobretensiones transitorias en la l nea de energ a Si el fusible se quema rep ngalo s lo con el mismo tipo y tama o 16 ENTRADA DE LA LINEA DE CA Conecte firmemente a este recept culo el cable suministrado de corriente de CA oprim i ndolo hasta que quede totalmente asenta do Enchufe el extremo macho del cord n a una salida aterrizada de CA NO PASE POR ALTO EL BORNE DE TIERRA DE LA CLAV IJA DE CA 17 SALIDA S DE LA S BOCINA S El SVT 150H tiene dos jacks de salida para bocinas que usted usar para conectarse a su s gabinete s de bajos Use cables para bocinas con clavijas de 1 4 para conectar el los jack s de la s BOCINA S al los gabinete s Observe la especificaci n de 4 ohms de impedancia m nima La tabla a continuaci n muestra la carga de impedancia total cuando se conecten gabi netes de bocinas en paralelo de Gabinetes Impedancia de cada Gabinete Impedancia Total 8 ohms 16 ohms 16 ohms NOTE In some areas 1 4 speaker jacks are not acceptable for use on amplifiers capa ble of high output power levels For this rea son the Speaker jacks on your amplifier may resemble the illustration to the rig
3. mordial para las frecuencias altas Esto permite un rango de 17 dB de refuerzo 22dB de recorte a 5kHz 9 EQ EN LED Este LED indicador se ilumina cuando usted activa el EQ mediante el control Maestro 11 del panel delantero 6 el interruptor de pie 23 del panel posterior The Rear Panel f CAUTION Q A TRIE CAUTION 15 16 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 Firmly plug the supplied AC power cord into this socket pushing it in until it is fully seated Plug the male end of the cord into a grounded AC outlet DO NOT DEFEAT THE GROUND PRONG OF THE AC PLUG 17 SPEAKER OUTPUT S The SVT 150H has two 1 4 speaker output jacks which you will use to connect to your bass cabinet s Use speaker cables with 1 4 plugs to connect the SPEAKER jack s to the cabinet s Observe the 4 ohm minimum impedance rating Please see the note concerning the speaker output jacks on the facing page The following chart shows the total impedance load when connecting speaker cabinets in parallel Cabinet Impedance of Cabs Total Impedance 40 8Q 40 82 1690 160 10 EQ GRAFICO Estos controles deslizantes cursores le permiten ajustar la salida de las fre cuencias que se muestran junto a cada control La posici n central de cada co
4. lights when the POWER switch 14 is turned on 14 POWER SWITCH This heavy duty rock er switch applies AC power to the amplifier the amp is ON in the up position OFF in the down position incrementara para impulsar el preamplificador con mayor fuerza hacia la distorsi n El tono de la se al tambi n cambia para proveer un sobreimpul so m s suave Tal vez tengan que ajustarse los controles de tono para obtener el tono general deseado El control de Ganancia 4 y la Terminal de 15 dB 2 interaccionan con el control de Impulso Para un sobreimpulso mayor el interruptor de la Terminal debe estar apagado y el control de Impulso totalmente a favor de las manecillas del reloj Use el control de Ganancia para fijar la canti dad deseada de sobreimpulso El diodo LED de Picos 3 se iluminar en forma constante cuando el amplificadora se utilice de esta manera 6 BAJOS Esta perilla sirve como el control pri mordial para las frecuencias bajas Esto permite un rango de 8dB de recorte 6 de refuerzo a 50Hz ON 2 SVT 150H The Front Panel Controls and Their Use 7 ULTRA MEDIANOS Este es el control primor dial para el rango de las frecuencias medianas Gire el control del centro hacia la izquierda para lograr un sonido de contorno m s distante menor salida en el rango mediano del centro hacia la derecha para obtener un sonido realmente penetrante 8 AGUDOS Esta perilla sirve como el control pri
5. panel delantero Al oprimirse el interruptor hacia adentro se activa la terminal de los 20dB lo que permite conectarse a las entradas para micr fonos en un mezclador sin sobreimpulsarlos SPEAKERS l 150 WATTS RMS 4 OHMS MINIMUM LOAD 22 SALIDA EQUILIBRADA Esta conexi n tipo XLR proporciona una se al de salida equilibrada de preamplificaci n para conec tarse a un tablero mezclador local una con sola grabadora amplificadores externos con entradas equilibradas La se al se puede establecer como pre 6 post EQ mediante el interruptor Pre Post 20 El nivel se puede ajustar para entradas de tipos ya sean de micr fono de l nea utilizando el interruptor de 20dB 21 23 INTERRUPTOR DE PIE Este jack acepta la clavija de 1 4 de un interruptor de pie de un solo bot n lo que permite un con trol remoto de la funci n de prender apagar del EQ Gr fico Cuando se utiliza un interrup tor de pie se pasa por alto el interruptor Maestro para Prender 6 Jalar el EQ 11 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 for room acoustics and to fine tune your sound ROCK GAIN DRIVE BASS ULTRAMD TREBLE g am MASTER
6. 8 typical 19 x9 5 x12 5 30 lbs Arr aga a ay Ampeg is proudly Made in America 1997 SLM Electronics 1400 Ferguson Avenue St Louis MO 63133 U S A P N 47 588 52 01 97
7. NE OUTPUT XLR with independent level control switch to patch into house consoles mixing boards or external power amplifiers e EFFECTS LOOP For increased intensity and quieter operation of exter 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 amplifier yourself and others 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 Connect the amplifier ONLY to 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 preceeding abuses have it looked at by an authorized service center NEVER set the amplifier on a support that might give out under its weight Always keep the total speaker impedance at or above the rated load 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 Don t use the amplifier if it has sustained damage to the chassis controls or power cord Refer the unit to an authorized service cen ter for inspection Amplifiers capable of producing high volume levels are also capable of inflicting pe
8. RE 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 SOUND LEVEL dBA DURATION PER DAY SOUND LEVEL dBA SLOW RESPONSE IN HOURS SLOW RESPONSE EXPLANATION OF DURATION PER DAY IN HOURS 1 1 2 1 1 2 1 4 or less DANGEROUS VOLTAGE IT IS NECESSARY FOR THE USER TO REFER TO THE INSTRUCTION MANUAL DANGER HAUTE TENSION REFERREZ VOUS AU MANUAL D UTILISATION GRAPHICAL SYMBOLS GEFAHLICHE SPANNUNG UNBEDINGT IN DER BEDIENUNGSANLEITUNG NACHSCHLAGEN SVT 150H bl 2 gt The Front Panel Controls and Their Use INPUT GAIN DRIVE BASS ULTRA MID ae Bice AEN DO EY ro Jol I SNS O TREBLE MASTER 7 ma Putt siti ia e 7 1 2 3 4 5 1 INPUT Connect your bass guitar here using a shielded instrument cable 2 15dB PAD If your bass has high output pickups or active electronics you may notice the Peak LED 3 flashes or stays on even at low settings of the Gain control 4 To keep the signal clean switch in the Pad This will attenuate the input signal to the preamp allow ing you to get the
9. best signal to noise ratio for your bass 3 PEAK LED This LED lights whenever any preamp stage is near the point of being over driven Adjust the Gain control 4 until a strong signal from your bass causes this LED to flicker NOTE f the LED stays on with the Gain at a low setting use the 15dB Pad 2 to attenu ate the input signal and readjust the Gain 4 GAIN This serves as the input level control for the amplifier For the best signal to noise ratio set this control so the Peak LED 3 flashes when you strike a string fairly hard 5 DRIVE This control is used to overdrive the preamp in order to get various harmonic enhancement or distortion sounds In the fully counterclockwise position the preamp is in the cleanest condition As the control is rotated 1 ENTRADA Conecte aqui su guitarra de bajos usando un cable blindado para instrumentos 2 TERMINAL DE 15 dB Si su bajo tiene capta dores de alta salida circuitos electr nicos activos usted tal vez notar que el d odo LED de Picos 3 parpadea 6 permanece iluminado a n en posi ciones bajas del control de Ganancia 4 Conecte esta Terminal para conservar limpia la se al Esto atenuar la se al de entrada hacia el preamplifi cador lo que le permitir obtener la mejor relaci n de se al a ruido para su bajo 3 DIODO LED DE PICOS Este LED se ilumi nar cuando cualquier etapa de preamplificaci n se encuentre cerca del punto de sobreimpul
10. dicador parpadear cada vez que se requiera el circuito lim itador interno para conservar limpia la se al de sal ida del amplificador Esto indica que el amplificador est aproxim ndose a su salida m xima y que el limitador est impidiendo el aplanamiento clip ping de la se al de salida 13 DIODO LED DE POTENCIA ENCENDIDA Este LED indicador se ilumina cuando se prende el interruptor de POTENCIA 14 14 INTERRUPTOR DE POTENCIA Este interrup tor de servicio pesado tipo vaiv n aplica la energ a de CA al amplificador el amplificador se PRENDE en la posici n hacia arriba y se APAGA en la posi ci n hacia abajo de in the U S A by SLM ELECTRONICS 1400 Ferguson Avenue St Louis MO 63133 18 19 20 21 22 23 21 20dB SWITCH This switch adjusts the output level at the Balanced Out jack 22 The switch works independently from the front panel Master control Pushing the switch in activates the 20dB pad allowing patching into microphone inputs on a mixer without overdriving them 22 BALANCED OUT This XLR type con nection supplies a balanced preamp output signal for connecting to a house mixing board recording console or external ampli fiers with balanced inputs The signal can be set to pre or post EQ by the Pre Post switch 20 The level can be adjusted for either mic or line type inputs using the 20dB switch 21 23 FOOTSWITCH This jack accepts the 1 4 plug from a 1 button footswitch
11. eck power cord Check house fusebox SPEAKER S OK SPEAKER S Listen for hum fuse power switch or circuit breaker POOR SOUND DEFECTIVE I I I NO HUM HUM OK Replace speaker s I I I I Check speaker Unplug bass POOR SOUND SOUND OK touch tip of cable l SOUND OK NO CHANGE aun HUM L Replace cable Check inst pickup NocHance SOUND OK If the problem isn t covered above or if the steps led you here then contact your Ampeg dealer for service informa tion Also you should refer your amp for servicing if it gets dropped has liquid spilled into it or sustains damage to its power cord see page 2 System Block Diagram PEAK LED O lt GAIN DRIVE mz ULTRA MID Gm sPEAKone LIMIT LED JACK gt SPEAKER a OUTS EFFECTS EFFECTS SEND RETURN BALANCED OUT _bl 24 SVT 150H Technical Specifications OUTPUT POWER RATING POWER REQUIREMENTS Domestic Export TONE CONTROL RANGE Bass Ultra Mid Treble GRAPHIC EQ RANGE 40Hz 80Hz 150Hz 300Hz 600Hz 900Hz 2kHz 5kHz 9kHz GAIN SIGNAL TO NOISE RATIO SIZE W x H x D AND WEIGHT O 150 Watts RMS 4 load 115VAC 115VAC 60Hz 140VA 100 115VAC 50 60Hz 140VA 230VAC 50 60Hz 140VA 8dB 50Hz 5 17dB 500HZ 17 22dB O 5KHZ 11dB 8dB 8dB 8dB 8dB 8dB 8dB 9dB 12dB 66dB typical tones center 750
12. ht Connect the amplifier to your speaker s using cables rated for very high output power terminated with the appropriate con nectors SVT 150H bl 2 gt 18 RETORNO DE EFECTOS Para utilizar un dispositivo de efectos externo otro proce sador de se ales conecte la SALIDA del dis positivo a este jack usando un cable blinda do Esto alimenta la se al procesada a la sec ci n maestra del amplificador 19 ENVIO DE EFECTOS Conecte la salida de este jack a la ENTRADA de un dispositi vo de efectos externo usando un cable blinda do Esto env a una se al post EQ a sus efec tos Siendo que la conexi n de un cable en este lugar no rompe la conexi n directa al amplificador de potencia esto se puede uti lizar como otra linea hacia afuera 20 INTERRUPTOR PRE POST Usted puede seleccionar por medio de este inter ruptor ya sea pre post EQ para la se al en el jack de Salida Equilibrada 22 Con el interruptor en la posici n de FUERA la se al en los jacks ser pre EQ Esta es una salida directa no afectada por ningunas posiciones del EQ de refuerzo Con el interruptor hacia adentro la se al es post EQ y se controla y modifica mediante los controles de tono el EQ Gr fico y el Circuito de Efectos 21 INTERRUPTOR DE 20dB Este interrup tor ajusta el nivel de salida en el jack de Salida Equilibrada 22 El interruptor fun ciona independientemente del control Maestro del
13. ntrol es plana sin refuerzo ni recorte Estos controles s lo afectan el sonido cuando el EQ es prendido 11 MAESTRO Fije mediante este control el nivel general de salida del amplificador El Circuito de Efectos y la Salida Equilibrada 18 19 22 no se ver n afectadas por el control Maestro Jalando el control Maestro se prende el EQ Gr fico 10 Cuando se utiliza el interruptor de pie se pasa por alto el interruptor del panel delantero 150 WATTS RMS 4 OHMS MINIMUM LOAD 17 18 EFFECTS RETURN To use an external effects device or other signal processor connect the OUTPUT of the device to this jack using a shielded cable This feeds the processed signal into the amplifier s master section 19 EFFECTS SEND Connect the output from this jack to the INPUT of an external effects device using a shielded cable This sends a post EQ signal to your effects Since plugging a cable in here does not break the through connection to the power amp this can be used as another line out 20 PRE POST SWITCH You can select either pre or post EQ for the signal at the Balanced Out jack 22 with this switch With the switch in the OUT position the sig nal at the jacks will be pre EQ This is a direct output which is not affected by any EQ or boost settings With the switch in the signal is post EQ and is controlled and modified by the tone controls Graphic EQ and Effects Loop 12 DIODO LED DE LIMITE Este LED in
14. rmanent hearing loss or damage if the exposure to such levels is prolonged Such damage is progressive and irreversible ATTENTION VORSICHT e OF ELECTRIC SHOCK Al D ELECTROCUTION EA SCHLAGGEFAHR e NOT OPEN Al PAS OUVRIR EA OFFENEN CAUTION TO REDUCE THE RISK OF ELECTRIC SHOCK ATTENTION POUR REDUIRE D ELECTROCUTION NE PAS DO NOT REMOVE COVER ENLEVER LE COUVERCLE AUCUNE PIECE INTERNE N EST REPRABLE NO USER SERVICEABLE PARTS INSIDE PAR L UTILISATEUR POUR TOUTE REPARATION S ADRESSER A UN REFER SERVICING TO QUALIFIED SERVICE PERSONNEL TECHNICIEN QUALIFIE 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 UNIT AND 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 EXPOSU
15. so Ajuste el control de Ganancia 4 hasta que una se al fuerte de su bajo cause un parpadeo de este LED al 40Hz G0H2 1S0HE 300Hz i sooHe akz 11 clockwise signal level is increased to drive the preamp harder into distortion The tone of the signal is also changed to provide a smoother overdrive The tone controls may have to be readjusted to obtain the overall desired tone The Gain control 4 and 15dB Pad 2 interact with the Drive control For greater overdrive the Pad switch should be out and the Drive control fully clockwise Use the Gain control to set the amount of overdrive desired The Peak LED 3 will glow steadily when the amp is used in this manner 6 BASS This knob serves as the primary low frequency control This allows for a range of 8dB of cut or boost at 50Hz 7 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 sound that really cuts through 8 TREBLE This knob serves as the primary high frequency control This allows for a range of 17dB boost or 22dB cut at 5kHz 9 EQ ON LED This LED indicator lights when you engage the EQ by the front panel Master control 11 or the footswitch 23 rear panel NOTA Si el LED permanece iluminado a n con la Ganancia en una posici n baja utilice la Terminal de 15 dB 2 para atenuar la se al de entrada y reaj
16. ts a l l l l l l l F ae Fu 60Hz 150Hz 300Hz 600Hz 900Hz 2kHz 5kHz GkHz a JAZZ DRIVE BASS ULTRAMD TREBE g ceo MASTER Ba E 60Hz 150Hz 300Hz 600Hz 900Hz 2kHz 5kHz GkHz A COUNTRY DRIVE BASS ULTRAMD TREBE g an MASTER ia 4 T ne fu 60Hz 150Hz 300Hz 600Hz 900Hz 2kHz 5kHz GkHz A FUNK POPPING DRIVE BASS ULTRA MID TREBLE o ah MASTER PAD aM E 7 7 1208 15dB PEAK 60Hz 150Hz 300Hz 600Hz 900Hz 2kHz 5kHz 6kHz oh 3 3 a SVT 150H Ol 2 gt Troubleshooting In the unlikely event that you SVT 150H should stop working properly or just stop working take a few minutes to trou bleshoot 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 something quite simple E POOR SOUND LEDs LIGHT LEDs DON T LIGHT Check bass cables r I I Check amp controls check Check AC outlet POOR SOUND SOUND OK for signal from bass ca I oun I I OUTLET OK NO OUTLET Check speaker s NO SOUND SOUND OK I I I l I Speaker OK I Ch
17. uste la Ganancia 4 GANANCIA Esto sirve como el control de nivel de entrada para el amplificador Para lograr la mejor relaci n de se al a ruido fije este control para que el LED de Picos 3 parpadee cuando usted pulse con fuerza alguna cuerda 5 IMPULSO Este control se usa para sobreim pulsar el preamplificador a fin de conseguir varios realces arm nicos 6 sonidos de distorsi n En la posici n totalmente contraria a las manecillas del reloj el preamplificador se encontrar en la posici n m s limpia Conforme el control se gire a favor de las mane cillas del reloj el nivel de la se al se 12 10 GRAPHIC EQ These slide controls allow you to adjust the output of the frequencies shown beside each control The center posi tion of each control is flat no boost or cut These controls only affect the sound when the EQ is turned on 11 MASTER Set the overall output level of the amplifier with this control The Effects Loop and Balanced Out 18 19 22 are not affected by the Master control Pulling the Master control turns on the Graphic EQ 10 When the footswitch is used the front panel switch is bypassed 12 LIMIT LED This LED indicator will flash on any time the internal limit circuit is called upon to keep amplifier s output signal clean This indicates that the amplifier is nearing full output and the limiter is keeping it from clip ping the output signal 13 POWER ON LED This LED indicator
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