SVP-BSP Bass Preamp
TABLE OF CONTENTS |
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Important Safeguards and Precautions . . . . . . . |
. . . . . . . .2 |
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. . . . . . . .3 |
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. . . . . . . .3 |
The Front Panel Controls and Their Use . . . . . . . |
. . . . . . .4 |
The Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . |
. . . . . . .5 |
Some Suggested Settings . . . . . . . . . . . . . . . . . . |
. . . . . . .6 |
Changing the Tubes . . . . . . . . . . . . . . . . . . . . . . |
. . . . . . .7 |
System Block Diagram . . . . . . . . . . . . . . . . . . . . |
. . . . . . .7 |
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 problems. Abiding by the following rules can help prevent damage to your preamp, yourself and others.
•The preamp 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 preamp ONLY to a properly grounded AC outlet of the proper voltage for your preamp.
•Avoid sudden temperature extremes, rain and moisture. Also, avoid sudden and intense impact. (If the preamp has been subjected to any of the preceding abuses, have it looked at by an authorized service center.)
•Unplug the preamp before cleaning it. NEVER spray liquid cleaners onto the preamp. Wipe it with a slightly dampened, lint-free cloth to remove dirt and film.
•Don’t use the preamp if it has sustained damage to the chassis, controls, or power cord. Refer the unit to an authorized service center for inspection.
•When using tall or stacked speaker cabinets, use them ONLY on a level surface. NEVER set tall or stacked cabinets on a surface with more than a five degree incline since tipping or falling could occur, possibly causing serious injuries.
•NOTE: 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 is 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 |
|
|
|
|
90 |
8 |
102 |
1-1/2 |
92 |
6 |
105 |
1 |
95 |
4 |
110 |
1/2 |
97 |
3 |
115 |
1/4 or less |
100 |
2 |
|
|
According to OSHA, any exposure in excess of those listed above could result in some hearing loss.
CAUTION |
ATTENTION |
VORSICHT |
RISK OF ELECTRIC SHOCK |
RISQUE D'ELECTROCUTION |
ELEKTRISCHE SCHLAGGEFAHR |
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 |
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. IN ORDER TO PROLONG THE LIFE OF THE UNIT AND PREVENT ACCIDENTAL 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 PROPERLY 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 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.
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EXPLANATION OF |
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"DANGEROUS VOLTAGE" |
"IT IS NECESSARY FOR THE USER TO REFER TO THE INSTRUCTION MANUAL" |
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2 |
"DANGER HAUTE TENSION" |
= "REFERREZ-VOUS AU MANUAL D'UTILISATION" |
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GRAPHICAL SYMBOLS: |
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"GEFAHLICHE SPANNUNG" |
"UNBEDINGT IN DER BEDIENUNGSANLEITUNG NACHSCHLAGEN" |
SVP-BSP Bass Preamp
An Introduction to your new Ampeg SVP-BSP Bass Preamp
When a living legend asks you to design a bass preamp, you don’t cut corners – you deliver. So when bassist extraordinaire Billy Sheehan turned to Ampeg for his preamp, we listened to his needs, found out his wants, and made real his dreams: behold, the SVP-BSP bass preamp! A unique piece of gear for the discriminating bassist, with two separate channels – clean and overdrive – and the ability to combine the two channels into a third, at the touch of a button. We even gave each channel its own effects loop and level-controllable balanced XLR output jack.
In designing the SVP-BSP, we were careful not to lose the harmonically rich sound of Ampeg’s SVT bass amps. This dynamic preamp still delivers unsurpassed quality, reliability and tonal flexibility, and offers the classic vibrancy of tubes as well as many new features.
All of the features and controls of your SVP-BSP are covered in detail within the pages of this owner’s guide. We recommend going over them before you use the preamp.
And a hearty “thank you” from Ampeg – and Billy!
Features
In the world of high performance bass amps, Ampeg’s SVT amplifiers stand alone. Keeping with true Ampeg tradition, the SVP-BSP Bass Preamp offers you more performance and flexibility than any other preamp in its class. Listed below are some of the outstanding features of your new preamp - features which set it apart from the competition! Additional information on these features can be found on the pages indicated.
•PAD: Perfect for basses with active electronics or very “hot” pickups (page 4)
•MUTE SWITCH: Cuts the sound from the preamp, letting you tune your bass in private (page 4)
•TWO SEPARATE CHANNELS: Choose between the clean channel, the overdrive channel, or both, for a wide variety of sounds (page 4, page 6)
•COMPRESSOR SWITCH: Evens out your volume by governing the dynamic range of the preamp (page 4)
•ULTRA LOW, ULTRA HIGH AND GAIN BOOST SWITCHES: For additional tonal flexibility – lets you further tweak your sound (page 4, page 6)
•VARIABLE MIDRANGE SELECTOR: Custom select your center frequency point to get just the right midrange voice (page 4, page 6)
•GATE SWITCH: Keeps things quiet in between bass riffs (page 4)
•FOOTSWITCH CONTROL: Use a two-button footswitch (like Ampeg’s AFP-2) to control channel selection and muting (page 5)
•TWO EFFECTS LOOPS: Lets you add your effects to either channel (page 5)
•TWO PREAMP OUTPUTS: Each channel has its own 1/4” jack to send its signal to separate amps/speakers if desired (page 5)
•TWO TRANSFORMER-BALANCED XLR OUTPUTS: Each channel has its own XLR jack (with level control) to send a balanced signal from the preamp (page 5)
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