SVT-3 PRO
Contents
1. 9VT 3 PRO Bass Guitar Amplifier VARI PR INPUT GAIN BASS MIDRANGE BRT HI d o 10 o 10 o 10 J6dB PEAK Lo MUTE E EQ ON Owner s Manual O Mm n 13 PRO Bass Guitar Amplifier TABLE OF CONTENTS Important Safety Instructions Introduction Features The Front Panel The Rear Panel Suggested Settings Personal Settings Rack Mounting Thermal Considerations Block Diagram Technical Specifications Troubleshooting Service Information IMPORTANT SAFETY INSTRUCTIONS Read these instructions Keep these instructions Heed all warnings Follow all instructions Do not use this apparatus near water Clean only with a dry cloth Y 0 OF Aa C PY rnm Do not block any ventilation openings Install in accordance with the manufacturer s instructions 8 Do not install near any heat sources such as radiators heat registers stoves or other apparatus including amplifiers that produce heat 9 Do not defeat the safety purpose of the polarized or grounding type plug A polarized plug has two blades with one wider than the other A grounding type plug has two blades and a third grounding prong The wide blade or the third prong are provided for your safety If the provided plug does not fit into your outlet consult an electrician for replacement of the obsolete outlet 10 Protect the power cord from being walked on or pinched particularly at plugs convenience receptacles and the2. UTILISATION UTILISER UNIQUEMENT DES ACCESSOIRES SPECIFIES PAR LE FABRICANT POUR UNE UTILISATION EN TOUTE SECURITE ET POUR EVITER DES BLESSURES ATTENTION AFIN DE PREVENIR TOUT RISQUE DE CHOCS ELECTRIQUES OU DE DEBUT D INCENDIE NE PAS EXPOSER CET APPAREIL A LA PLUIE ET A L HUMIDITE TOUT ENTRETIEN DOIT ETRE FAIT PAR UN TECHNICIEN QUALIFIE NOS AMPLIFICATEURS PEUVENT PRODUIRE DE TRES HAUTES PRESSIONS ACOUSTIQUES QUI PEUVENT CAUSER DES DOMMAGES AUDITIFS PERMANENTS OU ui L UTILISER AVEC UNE GRANDE PRECAUTION EST CONSEILLE ET DES PROTECTIONS AUDITIVES SONT RECOMMANDEES POUR UNE UTILISATION A FORT ATTENTION CET APPAREIL REQUIERT UNE PRISE MURALE AVEC MISE A LA TERRE AUX NORMES ACTUELLES ET COMPATIBLE AVEC LES SPECIFICATIONS ELECTRIQUES SE TROUVANT EN FACE ARRIERE DE L APPAREIL LA PRISE ELECTRIQUE DOIT RESTER ACCESSIBLE POUR DEBRANCHER L APPAREIL EN CAS DE DEFAUT PENDANT L UTILISATION CET APPAREIL DOIT ETRE DEBRANCHE SI IL N EST PAS UTILISE Elimination correcte du produit Ce symbole indique que ce produit ne doit pas tre limin avec les ordures m nag res comme le pr voiT la directive WEEE 2002 96 EC et votre loi nationale Ce produit doit tre remis un site de recyclage des d chets lectriques et des quipements lectroniques EEE Un mauvais recyclage de ce type de d chet peut avoir de possibles impacts n gatifs sur l environnement et la sant humaine dus aux manations de substances Dans un m me temps vot
3. point where they exit from the apparatus 11 Only use attachments accessories specified by the manufacturer 12 Use only with a cart stand tripod bracket or table specified by the manufacturer or sold with the apparatus When a cart is used use caution when moving the cart apparatus combination to avoid injury from tip over PORTABLE CART WARNING 13 Unplug this apparatus during lightning storms or when unused for long periods of time 14 Refer all servicing to qualified service personnel Servicing is required when the apparatus has been damaged in any way such as 2 power supply cord or plug is damaged liquid has been spilled or objects have fallen into the apparatus the apparatus has been exposed to rain or moisture does not operate normally or has been dropped 15 Do not overload wall outlets and extension cords as this can result in a risk of fire or electric shock 16 This apparatus shall not be exposed to dripping or splashing and no object filled with liquids such as vases or beer glasses shall be placed on the apparatus 17 This apparatus has been designed with Class l construction and must be connected to a mains socket outlet with a protective earthing connection the third grounding prong 18 The MAINS plug or an appliance coupler is used as the disconnect device so the disconnect device shall remain readily operable 19 For the terminals marked with symbol of 4 ma
4. the finish Ampeg continually develops new products and improves upon existing ones For this reason the specifications and information in this manual are subject to change without notice Ampeg is a registered trademark of LOUD Technologies Inc All other brand names mentioned are trademarks or registered trademarks of their respective holders and are hereby acknowledged www ampeg com 2012 LOUD Technologies Inc 16220 Wood Red Road NE Woodinville WA 98072 Part No SW0914 Rev B 10 12 15 089 IVe 1oitilqmA 1ntivd 2208 TRANSFORMER BAL LINE OUTPUT SVT 3PRO e IAL LINE 120 V xx Hz WATTS 1000 MAX E eee SS n SS n A Gi SPEAKER OUTPUTS A AS AS AA PRE CORI BALANCED 275 WATTS 8 OHMS E mm BALANCED UNBALANCED TUNER OUT 450 WATTS 4 OHMS y 4 OHM MIN LOAD EFFECTS LOOP 110 115V 250V U T10A SLO BLO c LEVATE gt 3 SAS I CAUTION ro i e REDUCE THE RISK OF FIRE REPLACE e HE y FUSE WITH SAME AC LINE IN TYPE AND RATING ATTENTION iS AVIS TO REDUCE THE RISK Vy j BOWER AMP ERE SME RETURN SEND FOOTSWITCH UTILISER UN FUS RISQUE DE CHOC IBLE DE RECHANGE ELECTRIQUE DE MEME TYPE DO NOT OPEN NE PAS OUVRIR ITO RAIN OR MOISTURE IsunsM 219nwO
5. time and money by doing it yourself and often the cure for the problem is something quite simple NO SOUND Check instrument cables POOR SOUND SOUND OK Check speaker s SPEAKER S OK POOR SOUND LEDs LIGHT Check power cord i or circuit breaker fuse power switch Check amp controls check for signal from instrument Listen for hum SPEAKER S DEFECTIVE Replace speaker s POOR SOUND SOUND OK Check speaker SPEAKER OK Unplug instrument touch tip of cable Check bass pickup If the problem isn t covered above or if the steps lead you here then contact your Ampeg dealer for service information Also you should refer the amp for servicing if it gets dropped has liquid spilled into it or sustains damage to its power cord Service Information If you are having a problem with your SVT 3 PRO you can go to our website www ampeg com and click on Support for service information or call Technical Support at 1 800 898 3211 Monday Friday during normal business hours Pacific Time to receive assistance If you are outside of the U S contact your local distributor for technical support and service The SVT 3 PRO is covered with sheet metal and aluminum not unlike robots spaceships and other cool things Clean with a dry lint free cloth Never spray cleaning agents on the SVT 3 PRO Avoid abrasive cleansers which would damage
6. R MASTER MASTER TUBE GAIN TUBE GAIN TUBE GAIN TUBE GAIN TUBE GAIN 11 O ME pee age S15 PRO Bass Guitar Amplifier Rack Mounting When mounting the SVT 3 PRO 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 continually safe and secure installation A 1 4 20 threaded insert is provided on the rear of the amplifier for connection to an additional support bracket It is highly recommended that this additional support be used when rack mounting the amplifier lt must not protrude more than 1 2 into the amplifier Thermal Considerations The amplifier is fan cooled with a single fan Air is drawn through the side panel vent to cool down the amplifier heatsinks and then expelled through the rear panel vents When installing be sure to allow sufficient air space around the front sides and rear of the amplifier for adequate cooling for the heatsinks Leave at least one rack space above and below and at leas
7. R Use this to control the overall output level Use it wisely and turn it down when making connections or trying something new TUBE GAIN The tube gain control varies the high voltage supply to the preamp tubes This allows a variety of tonal response characteristics from the power amp and replaces the limiter found on typical solid state power amps At 10 the voltage is at maximum providing a dynamic highly responsive tone At O the voltage is at minimum offering a thickened more compressed tone his tone may also be distorted depending on volume level In between settings are best for preventing harsh distortion when driving the power amp to its limits The effect of this control increases from moderate to dramatic as the power amp Is driven harder 13 14 1516 17 18 19 20 NOTE When adjusting the tube gain control 14 15 from 10 to O rapidly a low frequency hum and muting of the output signal occur simultaneously This is due to shifting of the DC bias point of the tubes and is no cause for concern Adjusting the control quickly from O to 10 brings a moderate delay due to the power supply capacitors charging MUTE Press this switch in to mute all outputs except the tuner out The footswitch may also control muting if the mute switch on the front panel is left in the out position The front panel switch is still active with the footswitch connected This is excellent for tuning your bass
8. adio TV technician for help CAUTION Changes or modifications to this device not expressly approved by LOUD Technologies Inc could void the user s authority to operate the equipment under FCC rules This apparatus does not exceed the Class A Class B whichever is applicable limits for radio noise emissions from digital appara tus as set out in the radio interference regulations of the Canadian Department of Communications CONSIGNES DE SECURITE IMPORTANTES LIRE SUIVRE TOUTES LES INSTRUCTIONS ET LES PRECAUTIONS D UTILISATION ATTENTION Le pr sent appareil num rique n met pas de bruits radio lectriques d passant las limites applicables aux appa reils num riques de class A de class B selon le cas prescrites dans le r glement sur le brouillage radio lectrique dict par les ministere des communications du Canada Exposure to extremely high noise levels may cause permanent hearing loss Individuals vary considerably in susceptibility to noise induced hearing loss but nearly everyone will lose some hearing if exposed to sufficiently intense noise for a period of time The U S Government s Occupational Safety and Health Administration OSHA has specified the permissible noise level exposures shown in the following chart According to OSHA any exposure in excess of these per missible limits could result in some hearing loss To ensure against potentially dangerous exposure to high sound pressure levels it is reco
9. az 15 PRO Boss Guitar Amplifier SVT 3 PRO TECHNICAL SPECIFICATIONS Output Power Rating Signal to Noise Ratio Maximum Gain Tube Complement Tone Controls Graphic EQ Level Graphic EQ Range Bright Switch Ultra Hi Switch Ultra Lo Switch Footswitch Jack Power Requirements Size H x W x D Weight 14 450 watts rms 4 ohms 3 THD 275 watts rms 8 ohms 3 THD 80 dB 20 Hz 30 kHz ref 1 THD N into a 4 ohm load with 20 dB stimulus normal 63 dB Q 1 kHz tone controls centered 12AX7 4 12AU7 1 Bass 12 12 dB O 50 Hz Midrange 15 15 dB 220 Hz 450 Hz 800 Hz 1 6 kHz or 3 kHz Treble 14 19 dB Q 5 kHz 10 10 dB 33Hz 15 15 dB 80 Hz 8 8 dB 150 Hz 8 8 dB 300 Hz 8 8 dB 600 Hz 8 8 dB 900 Hz 8 8 dB 2 kHz 8 8 dB 5 kHz 9 9 dB 8 kHz 10 10 dB 6 dB 2 kHz 6 dB O 5 kHz 2 5 dB O 50 Hz 12 dB 560 Hz 1 5 dB 5 kHz Graphic EQ On Off Mute On Off Tip Mute Ring EQ 100 120 VAC 50 60 Hz 390 W Domestic 200 240 VAC 50 60 Hz 390 W Export 4 0 in 102 mm with feet x 19 0 in 483 mm with ears 17 4 in 442 mm without ears x 15 5 in 394 mm 26 0 Ib 11 8 kg approximately O ME rm m ae 11 3 PRO Bass Guitar Amplifier Troubleshooting In the unlikely event that your SVT 3 PRO should malfunction take a few minutes to troubleshoot it before you call for service You can save yourself
10. cks supply a balanced unbalanced preamp output signal for connecting to a house mixing board recording console or external amplifiers with balanced inputs The signal can either be set to Pre or Post EQ with the selector switch and its level is controlled by the line out level control 27 TUNER OUT This jack supplies the only live output when the mute switch is engaged This allows for silent tuning through an electronic tuner or killing the house send with a monitor mixer send still active 28 FUSE The fuse protects the unit from damage due to overload conditions or AC power line surges If the fuse blows replace it only with the same size and type 25 Speakon is a registered trademark of Neutrik AG O ME rm m ae 11 3 PRO Bass Guitar Amplifier The Rear Panel continued 29 IEC POWER INPUT CONNECTOR This is where you connect the supplied AC power cord DO NOT DEFEAT THE GROUND PRONG OF THE AC PLUG 30 SPEAKER OUTPUTS These mono 1 4 TS output jacks supply speaker level power to the speaker cabinet The rated power output is 2 5 watts rms into 8 ohms or 450 watts rms into 4 ohms The two identical outputs are wired in parallel and you can use either one or use both Make sure the total speaker impedance load is 4 ohms or greater For example you could connect Two 16 ohm speakers an 8 ohm load Two 8 ohm speakers a 4 ohm load or one 4 ohm speaker Use speaker cables
11. eparate preamp may be connected to the Power Amp In jack and the Preamp Out jack may be connected to a slave amp page 9 O Mr nmm n 311 5 PRO Bass Guitar Amplifier The Front Panel 15dB INPUT 12 34 5 6 7 8 9 10 11 12 INPUT The signal output from an instrument active or passive may be connected to this 1 4 input by means of a shielded instrument cable BRIGHT When this switch is engaged a more lively top end response 46 dB at 2 kHz is added to the input signal 15 dB Press this switch in to reduce the input signal by 15 dB and compensate for higher output sources This attenuation is suited for use with basses that have active electronics or high output pickups Use this pad if you notice that the peak mute LED comes on regularly It will reduce the chance of overdriving the preamplifier stage and allow more usable range and fine adjustment of the gain control PEAK MUTE LED This red warning LED will come on if the mute switch is engaged or if the input signal is too high the gain control is set too high or there is too much boost from the bass midrange and treble controls If it comes on regularly even when these controls are low try engaging the 15 dB pad GAIN This varies the amount of signal driving the preamplifier If a small clockwise rotation from minimum leads to overloading and the peak LED illuminating try engaging the 15 dB pad his will give more usable range with the gain cont
12. mmended that all persons exposed to equipment capable of producing high sound pressure levels use hearing protectors while the equipment is in operation Ear plugs or protectors in the ear canals or over the ears must be worn when operating the equip ment in order to prevent permanent hearing loss if exposure is in excess of the limits set forth here Duration per Sound Typical Example day in hours Level dBA Slow Response Duo in small club Subway Train 3 0 25 or less Very loud classical music The boss screaming at his minions about manual deadlines O o o c pon po n 115 Loudest parts at a rock concert NE PAS UTILISER PROCHE D UNE SOURCE DE CHALEUR ET NE PAS BLOQUER OU OBSTRUER LE SYSTEME DE VENTILATION SUR CET APPAREIL POUR UNE UTILISATION CONFORME CET APPAREIL NECESSITE ENVIRON 7CM D ESPACE BIEN VENTILE AUTOUR DE SON SYSTEME DE REFROIDISSEMENT AINSI QU UN COURANT D AIR FRAIS CONSTANT NE PAS UTILISER CET APPAREIL PROCHE D UNE SOURCE LIQUIDE NETTOYER SEULEMENT A L AIDE D UN CHIFFON DOUX ET SEC ET NE PAS UTILISER DE PRODUITS MENAGERS CONNECTER UNIQUEMENT LE CABLE D ALIMENTATION FOURNI SUR UNE PRISE AVEC MISE A LA TERRE ET COMPATIBLE AVEC LA TENSION L INTENSITE ET LA FREQUENCE REQUISES INDIQUEES SUR LA FACE ARRIERE DE L APPAREIL S ASSURER DE NE PAS MARCHER PLIER OU TIRER SUR LE CABLE D ALIMENTATION DEBRANCHER L APPAREIL LORS D UNE TEMPETE OU LORS D UNE TRES LONGUE PERIODE DE NON
13. orary features The SVT 3 PRO amplifier is an ideal companion to the Classic Series Pro Series or PF cabinets available separately Like all Ampeg products your SVT 3 PRO amplifier is designed by musicians and built using only the best of components Each amplifier is tested to confirm that it meets our specifications and we believe that this amplifier is the absolute best that it can be In order to get the most out of your new amplifier please read this manual before you begin playing Best of luck in all of your musical endeavors Sincerely The dedicated team at Ampeg Features Here are some of the features packed into your new amplifier e 5 POSITION MIDRANGE SELECTOR Take your pick from the five center frequency points available to get just the right midrange voice page 5 e TUBE GAIN Control the dynamics of tonal response characteristics from the power amp from punch to compressed page 6 e 9 BAND GRAPHIC EQ Use as a second channel for bass solos or to shape the sound to your own exacting standards An independent level control allows you to adjust the Graphic EQ volume page 6 7 e TRANSFORMER BALANCED LINE OUTPUTS Independent level control One balanced XLR and one balanced unbalanced 1 4 jack to patch into house consoles mixing boards or external power amplifiers page 8 e EFFECTS LOOP Connect effects here for increased intensity and quieter operation page 9 e POWER AMP IN AND PREAMP OUT A s
14. ower amplifier output O LA ova za m nae S15 PRO Bass Guitar Amplifier The Rear Panel 21 SPEAKON JACK Use of this heavy duty connector is recommended when playing at full output levels due to Its incredibly high current handling capability Connect the amplifier to the speaker cabinet s using heavy gauge speaker cables terminated with the appropriate connectors The pin connections for this jack are 1 positive negative 22 RACK SUPPORT FASTENER For the most secure rack installation it IS recommended that a supplemental sup port be fabricated and fastened to the amplifier via this threaded insert Use a 1 4 20 threaded bolt that will not pro trude more than 1 2 into the amplifier to connect the strap 23 LINE OUTPUT LEVEL GROUND LIFT This control adjusts the output level at both line output Jacks This control works independently from the front panel master control If necessary pull this knob to engage the ground lift and eliminate hum 24 POST EQ PRE EQ The signal at the line out jacks can be set to either Pre EQ or Post EQ with this switch With the switch in the OUT position the signal at the jacks is Pre EQ This is a direct output not affected by any EQ or boost settings With the switch in the IN position the signal is Post EQ and is controlled and modified by the tone controls Graphic EQ and the effects loop 26 TRANSFORMER BALANCED LINE OUTPUTS These ja
15. rature accompanying the appliance Le point d exclamation l int rieur d un triangle quilat ral est employ pour alerter les utilisateurs de la pr sence d instructions importantes pour le fonctionnement et l entretien service dans le livret d instruction accompagnant l appareil WARNING To reduce the risk of fire or electric shock do not expose this apparatus to rain or moisture NOTE This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference in a residential installation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instruc tions may cause harmful interference to radio communications However there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interfer ence to radio or television reception which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures Reorient or relocate the receiving antenna Increase the separation between the equipment and the receiver Connect the equipment into an outlet on a circuit different from that to which the receiver is connected Consult the dealer or an experienced r
16. re coop ration un recyclage correct de ce produit contribuera la bonne utilisation des ressources naturelles Pour connaitre l endroit o il est possible de recycler ces quipements merci de contacter votre mairie les services de recyclages ou le service des d chets m nagers Correct disposal of this product This symbol indicates that this product should not be disposed of with your household waste according to the WEEE directive 2002 96 EC and your national law This product should be handed over to an authorized col lection site for recycling waste electrical and electronic equipment EEE Improper handling of this type of waste could have a possible negative impact on the environment and human health due to potentially hazardous substances that are generally asso ciated with EEE At the same time your cooperation in the correct disposal of this product will contribute to the effective usage of natural resources For more information about where you can drop off your waste equipment for recycling please contact your dl local city office waste authority or your household waste disposal service O AA za m nae S15 PRO Bass Guitar Amplifier Introduction Congratulations You are now the proud owner of an Ampeg SVT 3 PRO bass guitar amplifier This compact yet dynamically powerful bass amplifier delivers a searing 450 watts of unsurpassed quality offering the classic vibrance of tubes as well as contemp
17. rol eee AP z up a az SWAG PR O 13 14 15 16 17 18 19 20 6 ULTRA HI This switch when engaged 10 enhances the amount of high frequency output by 6 dB at 5 kHz ULTRA LO This switch when engaged enhances the amount of low end output by 2 dB at 40 Hz and 10 dB cut at 500 Hz BASS Use this to adjust the low frequency level of the amplifier This provides up to 12 dB of boost or 12 dB of cut at 50 Hz The low frequency output is flat at the center position MIDRANGE Use this to adjust the midrange frequency level of the amplifier This provides up to 15 dB of boost or 15 dB of cut at the center frequency selected by the frequency control The midrange frequency output is flat at the center position Rotate the control counter clockwise for a contoured sound more distant less midrange output or clockwise for a sound which really cuts through FREQUENCY This control allows you to select the center frequency for the midrange control giving you a choice of five voices for the midrange The numbers correspond to the following center frequencies 12220 Hz 2 450 Hz 32800 Hz 421 6 kHz 5 23 kHz O Mon za age SVT 5PRO Bass Guitar Amplifier The Front Panel continued 11 12 13 TREBLE Use this to adjust the high frequency level of the amplifier This provides up to 14 dB of boost or 19 dB of cut at 5 kHz The high frequency output is flat at the center position MASTE
18. t six inches behind and in front of the chassis to allow proper ventilation The rear of the rack should be unobstructed and placed no closer than 10 from walls or other large obstructions When the amplifier is first turned on the fan runs at a low speed As the power output increases and the amp warms up the fan gradually increases in speed to provide additional cooling If the amplifier should overheat a thermal switch turns off the power amplifier allowing the heatsink to cool down Once the amplifier has cooled to a safe operating temperature the thermal switch resets and reactivates the amplifier If this should occur identify the cause of the problem and take corrective action For example e Provide better ventilation e nstall a fan in the rack to move more air e Make sure the amplifier is not overloaded with too low of a load impedance or by a short circuit on the speaker line 12 13441 SVT 3 PRO Bass Guitar Amplifier NI GNIS O3 8193333 _ HOLIMSLOOW vnus 9193433 INNTOA HILSVIN LNO vee dNVIYd NOMVIAS diNV HIMOd LNO HIMVIdS Block Diagram AONINOFHH e 1 e e e JINVYIQIN ENSE SSVH NIVO T CT CH MOI H9IH 1H9I498 031 VALIN VeL MV3d 147 ONNOYO Tid e 100 INIT G3ONviva M i Oo I 75137 100 INIT S 1SOd N LNO INIT IVann Iva iol YANNL AQ Y344N8 13 HOLIMSLOOF INN avd aPGL a LNdNI O Mo rm n
19. tly from LOUD Technologies Inc Be sure to ask for model AFP2 OTHER Make sure that the ventilation openings are not obscured in any way This will allow the flow of cooling air to the power amplifier s heatsinks O Mon 311 3 PRO Bass Guitar Amplifier Suggested Settings A note about the Graphic EQ The Graphic EQ may be used in two ways 1 To fine tune the sound make small adjustments at the desired frequencies and leave the EQ on throughout the entire session This is great for adapting to varying room acoustics when playing multiple venues and 2 For a completely different sound make larger adjustments and only activate the EQ when a second channel sound is required such as during bass solos ROCK MIDRANGE FREQUENCY TREBLE MASTER TUBE GAIN 12345 gt 0 10 MIDRANGE FREQUENCY TREBLE MASTER TUBE GAIN daa TASTE 0 10 O lt L0 15dB PEAK MUTE Sel at 10 for the cleanest sound Set at 5 for moderate softness Set at 0 for a very soft feel MIDRANGE FREQUENCY TREBLE MASTER TUBE GAIN 0 10 15dB PEAK MUTE FUNK POPPING GAIN BASS MIDRANGE FREQUENCY TREBLE MASTER TUBE GAIN BRT N OUT 4 9 G9 YU 15dB PEAK LO MUTE 0 10 10 Personal Settings MIDRANGE FREQUENCY MIDRANGE FREQUENCY MIDRANGE FREQUENCY MIDRANGE FREQUENCY MIDRANGE FREQUENCY TREBLE TREBLE TREBLE TREBLE TREBLE MASTER MASTER MASTE
20. with 1 4 TS ends to make the connections Do not use instrument cables as they may overheat We recommend using the Speakon jack 22 whenever playing at full output levels 31 POWER AMP IN This jack connects directly to the internal power amp for use with an external preamp When using an external source connect the OUTPUT of the source to this jack using a shielded instrument cable to feed the signal into the power amp section The internal signal is disconnected when a plug is inserted into this Jack 32 PREAMP OUT This jack is a direct post master preamp output for use with an external power amp Connect the external amp s input to this Jack using a shielded instrument cable 33 EFFECTS LOOP RETURN When using an external signal processor connect the OUTPUT of the effect to this jack using a shielded instrument cable to feed the processed signal into the unit 34 EFFECTS LOOP SEND When using an external signal processor connect the INPUT of the effect to this Jack using a shielded instrument cable to send the post EQ signal to the effect for processing 35 FOOTSWITCH Connect a dual footswitch to this jack for remote Mute and EQ On Off control On the stereo 1 4 plug the tip controls Mute and the ring controls EQ On Off The EQ footswitch overrides the front panel switch and the Mute function is available from either location NOTE A footswitch may be purchased at your local Ampeg Dealer or ordered direc
21. with an electric tuner without having to adjust any levels to turn down the sound The peak mute LED will illuminate when this switch is engaged GRAPHIC EQ When this switch is engaged the 9 band graphic EQ is enabled A footswitch overrides this switch O Mr za x age 311 5 PRO Bass Guitar Amplifier The Front Panel continued p PPP SV T 3 PRO 33Hz 80Hz 150Hz 300Hz 600Hz 900Hz 2kHz SkHz kHz Ud e e EE EE EEN E E o 1 2 34 5 6 7 8 9 10 11 12 13 14 1516 17 18 19 20 16 ACTIVE LED This LED illuminates when the EQ is on 17 9 BAND GRAPHIC EQ These sliders control the output frequencies indicated above each control The center position of each control is flat no boost or cut 18 LEVEL This slider is the output vol ume control for the Graphic EQ and only affects the signal when the EQ is engaged If the EQ d signal is too soft slide the level control up if it s too loud slide this control down 19 ON LED This LED illuminates when the power IS On 20 POWER SWITCH Use this switch to turn the overall system power on or off Press the top of the switch to turn on the power Press the bottom of this switch to put the amp into standby mode It will not function but the circuits are still live To remove AC power either turn off the AC mains supply or unplug the power cord from the amplifier and the AC mains supply NOTE There is a delay during power up until the protection relay enables the p
22. y be of sufficient magnitude to constitute a risk of electric shock The external wiring connected to the terminals requires installation by an instructed person or the used of ready made leads or cords A CAUTION AVIS RISK OF ELECTRIC SHOCK DO NOT OPEN RISQUE DE CHOC ELECTRIQUE NE PAS OUVRIR CAUTION TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT REMOVE COVER OR BACK NO USER SERVICEABLE PARTS INSIDE REFER SERVICING TO QUALIFIED PERSONNEL ATTENTION POUR EVITER LES RISQUES DE CHOC ELECTRIQUE NE PAS ENLEVER LE COUVERCLE AUCUN ENTRETIEN DE PIECES INTERIEURES PAR L USAGER CONFIER L ENTRETIEN AU PERSONNEL QUALIFIE AVIS POUR EVITER LES RISQUES D INCENDIE OU D ELECTROCUTION N EXPOSEZ PAS CET ARTICLE A LA PLUIE OU A L HUMIDITE The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of uninsulated dangerous voltage within the product s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons Le symbole clair avec point de fl che l int rieur d un triangle quilat ral est utilis pour alerter l utilisateur de la pr sence l int rieur du coffret de voltage dangereux non isol d ampleur suffisante pour constituer un risque d l ctrocution The exclamation point within an equilateral triangle is intended to alert the user of the presence of important operating and maintenance servicing instructions in the lite
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