Ampeg Svt-Cl Musical Instrument User Manual
Contents
1. Owner s Guide for the SVI CL Bass Amplifier x s i EI B 12345 D LERNI N d ETN ETN FT HT N IET SN d x H 4 J J S Ti CLASSIC STANDBY Ke M es P d M I ms I D ULTRA HI LO BASS MIDRANGE FREQUENCY TREBLE MASTER a STANDBY 9 Table of Contents Important Safeguards and Precautions Introduction Features System Block Diagram The Front Panel Controls and Their Use The Rear Panel Controls and Their Use Some Suggested Settings Changing the Tubes Troubleshooting back cover Technical Specifications back cover 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 prob lems Abiding by the following rules can help prevent damage to your amplifier yourself and others e The amp is equipped with a three prong 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 amp ONLY to a properly grounded AC outlet of the proper voltage for your amp If no grounded outlet is available use only an approved method of adapting to a two prong AC source e 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 e NEVER set the a2. C BAL PWR AMP SLAVE OUT INPUT OUT l l IMPEDANCE E e4 OHMS e 2 OHMS i JACK BIAS EMEN l a 1 4 JACK V SPEAKER MASTER OUTS POWER AMP e e POWER ae PREAMP OUT OdB INPUT BASS TREBLE 15dB INPUT vq ane m SPEAKON HI FREQUENCY Ww D sack ULTRA A IM M s 1 LO POWER N ub TN STANDBY BIAS FAULT INDICATORS Q MER ULTRA HI LO The Front Panel Controls and Their Use 12345 ERN amp CS DES wr p J DET A 1 I5 VS Pd BASS MIDRANGE FREQUENCY 1 OdB INPUT This jack accepts the signal from a passive instru ment through a shielded instru ment cable 2 15dB INPUT This jack accepts the signal from an active instru ment through a shielded instru ment cable 3 GAIN This control adjusts the basic level of signal in the preamp 4 ULTRA HI This switch boosts high frequencies 5 ULTRA LO This switch when engaged provides emphasis to the low frequencies by boosting the low frequencies and selectively cutting the mid frequencies 6 BASS This is the primary low frequency control It allows for 12dB of cut or boost at 40Hz 7 MIDRANGE This is the primary midrange control It allows for 20dB of cut or 10dB of boost at the center frequency selected by the Frequency control 8 8 FREQUENCY Allows you to select the center frequency for the Midrange control 7 giving you a choice of five voices for the
3. Midrange The center frequencies are from left to right 220Hz 450Hz 800Hz 1 6kHz and 3kHz 9 TREBLE This is the primary high frequency control It allows for 20dB of cut or 15dB of boost at 4kHz 10 MASTER This controls the signal level to the power amp and therefore the overall listening level It also controls the level to the Preamp Out jack 20 11 STANDBY POWER FAULT INDICATOR LED This is a multi function LED In Standby Mode it glows red In the On mode when the high voltage comes on it glows green If it does not turn green in the On mode there is no high volt age present and the unit needs servicing If the amp detects a fault in the power tube circuit the high voltage is turned off and the LED flashes between red and green This usually indicates a bad power tube The amp will remain in this condition until the unit is turned off 12 STANDBY The Standby mode allows the tubes to warm or remain warm without high voltage being applied to them This extends tube life This switch should be OFF when first turning the amplifier on Allow the unit to warm up for 20 seconds before switching to the ON position During short periods of non use the amp should be put into Standby mode 13 POWER This supplies AC power to the unit Turn this switch on before turning on the Standby switch 12 as explained above This switch must be turned off to reset the amp after a Fault condi tion The Rear
4. no need to fiddle with this every other day Note that it is nor mal for the red LEDs to light when there is a signal present Bias 1 Control adjusts the three left as seen from the rear power tubes Bias 2 Control adjusts the three right power tubes By observing the LEDs as the Bias Controls are slow ly rotated clockwise a number of tube problems can be diagnosed by the user Condition Problem Solution Green comes on then red No problem The longer the green LED is on before the red LED comes on the better matched the tubes are Red comes on then green Tubes not properly matched Set slighty before green comes on obtain matched tubes when possible Red comes on no green One or more tubes are non functioning Check to make sure tubes are all seated properly if so find and replace bad tube s None on Possibly no high voltage or bad Have unit checked by a service technician Bias Control or bad tube s Both on all the time Possible bad Bias Control or bad tubes Have unit checked by a service technician If the tubes are bad enough to cause damage to the unit the Fault Indicator 11 Front Panel will signal and the unit will shut down Q svr at Troubleshooting In the event that your SVT CL should stop work ing properly or just stop working take a few min utes to troubleshoot it before you call for service You can save yourself a lot of time and sometimes money doing it yourself and often the problem is so
5. your new Ampeg SVT CL Bass Amplifier The harmonically rich sound and legendary performance of the classic AMPEG SVT are redefined in the SVT CL This dynamically powerful bass amp delivers a thunderous 300 watts of unsurpassed quality reliability and tonal flexibility offering the classic vibrance of tubes as well as contemporary features All of the features and controls of your SVT CL are covered in detail within the pages of this owner s guide We recommend going over them before you use the amplifier Features In the world of high performance bass amps SVT amplifiers stand alone In true Ampeg tradition the SVT CL offers you more power performance and flexibility than any other amplifier in its class Listed below are some of the outstanding features of your new amp features which set it apart from the competition Additional information on these features can be found on the pages indicated 15dB INPUT This feature is perfect for active basses page 4 ULTRA LO AND ULTRA HI SWITCHES These enable you to tailor your sound in many different ways at the touch of a button page 4 5 POSITION FREQUENCY SELECTOR Take your pick from the five center frequency points to get just the right midrange voice page 4 BIAS ADJUSTMENT CONTROLS These controls allow you to adjust the tube bias for proper operation pages 5 amp 7 e SLAVE OUT Use for powering another amp from the SVT CL s preamp page 5 System Block Diagram 2
6. DRANGE FREQUENCY TREBLE MASTER the appropriate output volume level ROCK 12868 FS O N a m A PT ATN T I I S I N I ULTRA HI LO BASS MIDRANGE FREQUENCY TREBLE MASTER COUNTRY 12345 ES oan pra oon oan RO PON INN ON er P y 1 95 p Wm Nass o ULTR TRO BASS MIDRANGE FREQUENCY TREBLE MASTER sa o uA Changing the Tubes Tubes wear out in direct proportion to how often and how hard you play the amplifier Power tubes should be checked at least once a year more frequently if you use the amplifier nearly every day When power tubes wear out the amplifier will begin to grow weak lack punch fade up and down or lose highs and lows Power tubes work togeth er in a push pull configuration and should all be replaced at the same time with matched or balanced tubes Your deal er can recommend the best replacement tubes for your amplifier Preamp tubes aren t worked as hard as power tubes and typically last longer When a preamp tube wears out the amplifier may squeal get noisy lose gain and sensitivity or just quit working A service center can determine which tube s may need replacing To get to the power tubes in the SVT CL the rear screen must be removed and the tube retainer s must be moved out of the way Qualified service persons may follow these steps to change the tubes Turn the amp off unplug it and let it cool for at least 5 minutes Remove the
7. Panel Controls and Their Use 14 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 15 FUSE This protects the unit from damage due to overload con ditions or power line surges If the fuse blows replace it only with the same size and type 16 POLARITY Place this switch in the position that provides the least electrical buzz from the unit 17 BIAS SECTION These two controls and sets of LEDs allow the user to properly bias the power amp See Setting Tube Bias on page 7 for a complete description of how to use this section 18 SLAVE OUT This jack receives the same signal that is being sent to the power amp It is useful for powering another amp slave from this unit s preamp 19 BALANCED OUT This XLR type jack is the output at the power amp in Thus it will include any processing done in the Preamp Out Power Amp loop 16 17 This signal can be used to feed an external power amplifier mixing console or house PA system 20 PREAMP OUT This jack car ries the post Master 10 signal Using this jack does not break the path to the power amp This signal can be used to feed an external power amplifier mixing console or house PA system 21 POWER AMP IN This jack accepts a signal to be sent to the power amp and the Slave Out jack 18
8. RNE N EST REPRABLE DEN DECKEL ABENHMEN INTERNE TEILE KONNEN NICHT VOM NO USER SERVICEABLE PARTS INSIDE PAR L UTILISATEUR POUR TOUTE REPARATION S ADRESSER A UN BENUTZER GEWARTET WERDEN DIE WARTUNG IS QUALIFIZIERTEM REFER SERVICING TO QUALIFIED SERVICE PERSONNEL TECHNICIEN QUALIFIE WARTUNGSPERSONAL ZU UBERLASSEN THIS EQUIPMENT HAS BEEN DESIGNED AND ENGINEERED TO PROVIDE SAFE AND RELIABLE OPERATION INORDER 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 REC OMMENDED IF UNIT IS OPERATED AT HIGH VOLUME EXPLANATION OF 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 rp An Introduction to
9. Using this jack breaks the path from the signal that was pre sent at the Preamp Out jack 20 This can be used as a post Master 10 patch point 22 22 IMPEDANCE SELECTOR Use this switch to match the output impedance of the amp to the speaker s being used 2 or 4 ohms For help in deciding the total impedance of your system consult the chart below Total Impedance 2 ohms 4 ohms 2 ohms 4 ohms 2 ohms Number of Cabinets Cabinet Impedance 2 ohms 1 4 ohms 4 ohms 1 2 8 ohms 2 8 ohms 4 23 SPEAKER OUT Two 1 4 phone jacks and one Speakon jack are provided for connecting speakers to the unit These jacks are wired in parallel to each other When operating at or near full power the Speakon jack is rec ommended for use over the 1 4 jacks due to its higher current han dling capability NOTE In some areas 1 4 speaker jacks are not acceptable for use on amplifiers with high output power levels For this reason the 1 4 jacks on your amplifier may not be accessable use the Speakon jack 9 rtm s Some Suggested Settings JAZZ 12345 m ZN z LIT ons os GUY Mm y RN PU 0 0 i The setting of the T Naso as Gain control ULTR TRO BASS MIDRANGE FREQUENCY TREBLE MASTER depends on your particular instrument FUNK The Master should 12345 TN ATN F F i GEB be set to produce E on emm a if 1N y Fi T S Pd Hn Pd Pd N I ULTR TRO BASS MI
10. mething quite simple If you think the problem may be worn out tubes see page 7 for symptoms of tube failure If the problem isn t covered above or if the steps led you here then contact your Ampeg dealer for service information Also you should refer your amp for servicing if it DISCONNECT all external devices except bass and speaker cabinet Green Bias LEDs on Bias LED s flashing red Possible power amp Check speaker cables Retry If these steps fail to solve problem see below gets dropped has liquid spilled into it or sustains damage to its power cord Technical Specifications OUTPUT POWER RATING TOTAL SYSTEM GAIN TONE CONTROL RANGE BASS MIDRANGE TREBLE ULTRA LOW ULTRA HIGH SIGNAL TO NOISE RATIO TUBE COMPLEMENT POWER REQUIREMENTS SIZE W x H x D AND WEIGHT 300 watts RMS minimum continuous 396 THD into 2 or 40 0 4VRMS input 67dB 1kHz with levels up and tones flat 3dB 40Hz and 15kHz 12dB 40Hz 10dB 20dB 220 450 800 1 6k or 3kHz 15dB 20dB 4kHz 2dB 40Hz 10dB 500Hz 9dB 8kHz 80dB typical 12AX7 3 12AU7 2 6550 6 10A Normal Blow 115VAC 60Hz 460VA 24 W x 11 5 H x 13 D 80 Ibs Declaration of Conformity Manufacturer Loud Technologies Inc 16220 Wood Red Road NE Woodinville WA 98072 Tel 425 487 4333 Web www loudtechinc com Product Category Audio Amplifier This Product Complies with the following Europea
11. mp on a support that might give out under its weight e Always keep the total impedance at or above the rated load e Unplug the amp before cleaning it NEVER spray liquid cleaners onto the unit Wipe the unit with a slightly dampened lint free cloth to remove dirt and film e Don t use the amp if it has sustained damage to the chassis controls or power cord Refer the unit to an authorized service center for inspec tion 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 is advised and ear protection recommended when playing at extremely loud levels 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 DURATION PER DAY SLOW RESPONSE IN HOURS SLOW RESPONSE IN HOURS 1 1 2 1 1 2 1 4 or less According to OSHA any exposure in excess of those listed above could result in some hearing loss CAUTION ATTENTION VORSICHT 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 INTE
12. n Directives and Test Standards for Audio Amplifiers EMC EN55103 EN55022 EN61000 3 2 EN61000 3 3 and 92 31 EEC This device has been tested and complies with Part 15 of the FCC Rules This equipment also complies with the rules for Canada under ICES 003 Operation is subject to the following two conditions 1 this device may not cause harmful interference and 2 this device must accept any interference received including interference that may cause undesired operation Safety EN60065 LVD 72 23 EWG and 93 68 EEC for markings Designed by Ampeg in the USA 02008 LOUD Technologies Inc 16220 Wood Red Rd NE Woodinville WA 98072 USA Ampeg is a registered trademark of LOUD Technologies Inc P N 47 509 23 C00 06 08
13. screws which hold the perforated metal screen to the rear of the cabinet Set the perforated metal screen aside Remove the tube retainer s by lifting them off the tube s and moving them to one side Grasp the tube at its top and gently work it out of its socket by rocking it slightly back and forth as you lift up on it e When inserting new output tubes align the tab in the tube s plastic base with the slot in the socket and press the tube gently but firmly into place by pushing down on its top e Replace the perforated metal screen and tighten its screws e Power up the amplifier and let it sit for at least 20 minutes Bias the amplifier as directed in the section below Setting Tube Bias Allow the unit to warm up at proper AC line voltage for at least 20 minutes With no input signal present adjust each control so that only the associated green LED is lit The controls may be slightly interactive If neither LED is lit the amp is over biased This will result in some distortion in the power amp and a generally thin sound If the green and red LED are lit the amp is under biased and too much current is flowing to the power tubes This will give a big full sound but will also reduce the life of the power tubes Once set the controls should not have to be changed except as needed for tube replacement or to compensate for tube aging Note that the AC line voltage may vary from place to place and the LEDs will read slightly different There is
Download Pdf Manuals
Related Search