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TABLE OF CONTENTS (ENGLISH) Introduction, Owner’s record, and key features Velacity amplifier features (Distortion Limiting, HUSH noise gating and reduction, Voltage Controlled Amplifier’s) Installation and safety precautions Amplifier controls and operation Amplifier connections and interface Speaker configurations Recommended system configurations (4) Final installation (Mounting and ventilation, use of internal crossovers, fusing, power and speaker wiring) Trouble-shooting guide Limited warranty (Unite
INTRODUCTION Congratulations on your purchase of the world’s finest brand of car audio amplifiers. We have invested tremendous effort in the design process of the new VELOC/TT”series amplifiers in order to achieve superior musical performance.
UNDERSTANDING YOUR AMPLIFIER’S FEATURES WHAT IS AN AMPLIFIER?... An amplifier, by definition, is a device that receives a small audio signal on its input and reproduces it with larger voltages (or current) on its output. Ideally there should be no internal modifications of the signal other than voltage or current level. If there are any changes in the signal character it is 4 considered a “distortion” of the input signal.
HUSHm NOISE REDUCTION AND DOWNWARD EXPANSION GATING High quality compact discs provide very wide range volume levels with low background hiss levels. Unfortunately, the car is a very noisy electrical environment so vehicle noises (pops and alternator whine) often creep into the audio signal somewhere in the installation. Although mid and high level music tends to mask background noises, vehicle noises become quite audible, and annoying, during quiet music passages.
VCA’s (Voltage Controlled Amplifiers) & ELECTRICAL PIN-OUTS Used in Professional Audio for some years, but totally new to the car audio world, is a remote control gain devices called a “VCA”. This is a small integrated circuit that can control the feedthrough gain of a circuit from a remote location. It operates much like an external “hand” that controls the signal flow through a circuit, much like a simple water flow valve.
INSTALLATION AND SAFETY PRECAUTIONS !! WARNING !! 8 ALWAYS DISCONNECT THE (+I LEAD FROM THE BATTERY OF THE VEHICLE BEFORE DOING ANY INSTALLATION WORK! 8 DO NOT INSTALL THIS UNIT IN THE ENGINE COMPARTMENT! 8 DO NOT RUN WIRES UNDERNEATH OR OUTSIDE THE VEHICLE! !! SAFETY PRECAUTIONS !! ._ nalyze the mounting location carefully to avoid damaging gas tanks, electrical wires, and/or draulic lines. 2.
AMPLIFIER CONTROLS AND OPERATION 1. TONE CONTROLS - The tonal quality of the signal passed through the amplifier can be modi in the bass and treble regions using the internal tone controls. Although somewhat redunda to those on the radio, these controls help correct for small equalization problems in the car without changing the controls on the radio. This helps improve the Signal to Noise ratio of the system since the boosted highs are done in the amplifier and not at the other end of the RCA cables. 2.
AMPLIFIER CONNECTIONS AND INTERFACE I . 1. GROUND LINE - This is the high current ground connection to the chassis of the car. It should be fastened to a clean ground connection in the car, capable of handling high current loads. Do not run a wire up to the car battery- ground for this line. It should remain less than 3 feet in length (1 meter). 2. TRIGGER LINE - This connection is the connection point that allows the amplifier to be switched on from a remote location (usually the radio).
SPEAKER CONFIGURATIONS Many audio systems can be generated from the three basic speaker output configurations of this amplifier. They are: 4 CHANNEL MODE (full range audio); 3 CHANNEL MODE (2 channel highpass/l channel low-pass); and 2 CHANNEL MODE (2 channel full-range or low-pass subwoofer). Possible in-car configurations will be covered elsewhere in this manual. 3 CHANNEL (2 Chnnel HiihPeeUl Channel Low-Pau) L 2 CHANNEL MODE (2 Channel Full Range) .
SYSTEM CONFIGURATIONS (#l OF 4 RECOMMENDATIONS) STEP-UP POWER CONFIGURATION (4 channel full-range) One ‘of the most difficult decisions in amplifier usage is an optimized power amplifier configuration. The Blaupunkt VEf 0C/7YT” series of amplifiers has the versatility to offer multiple installations but the most easily understood is the “step-up power” configuration.
SYSTEM CONFIGURATIONS (#2 OF 4 RECOMMENDATIONS) SATELLITE/SUBWOOFER CONFIGURATION (3 channel high-pass/low-pass) Another common configuration is that of a “satellite/subwoofer” speaker system. By breaking the audio spectrum (20 - 20,000 Hz) into two parts (e.g., above and below 100 Hz) amplifier power and associated loudspeakers can be better proportioned to the needs of most music. For truly dynamic performance, a dedicated subwoofer amplifier and speaker are needed for the low frequencies.
SYSTEM CONFIGURATIONS (973 OF 4 RECOMMENDATIONS) . MULTI-MODE CONFIGURATION (4 channel full-range w/derived subwoofer) Somewhat new to the car audio world is the “multi-mode” configuration which permits three speakers to operate from a 2 channel amplifier. The benefit is a “quasi-satellite/subwoofer” system that can be constructed using passive components (i.e.
SYSTEM CONFIGURATIONS (#4 OF 4 RECOMMENDATIONS) MULTIPLE AMPLIFIER CONFIGURATION (2 channel subwoofer/ channel full-ranae) For the audiophile, there is the possibility to install multiple amplifiers and achieve unparalkled sound quality. Using the optional remote control, you can also run the gains of all three amps up and down together from one remote.
FINAL INSTALLATION Proper installation of your amplifier should also address several areas; adequate mounting and ventilation, proper signal input interface, correct use of internal crossover networks, “clean” power/ground wiring, proper fusing, and power/speaker wiring. ADEQUATE MOUNTING AND VENTILATION Inevitably this amplifier will be mounted in locations with limited space. If possible, try mounting the amplifier on a vertical surface with the fins up/down for best vertical air movement.
“CLEAN” POWER AND GROUND Unfortunately, the number of electronic devices in the car has grown such that care must be taken to properly install the power and ground connections of the amplifier in order to prevent overloading the charging system of the vehicle or interjecting noise. Currents are high enough that a dedicated power line should be run directly to the battery of the car, but not to the vehicle’s alternator output.
POWER WIRING Most automobiles built in the last 10 years have adequate current capability for your Blaupunkt amplifier. Except for systems above 500-700 watts, the factory charging system and battery should comfortably power your audio system. Care should be taken in the choice of wire to ensure adequate current delivery to the amplifier. Wire diameter size (gauge) is an important factor for high power audio systems. The main battery cable size needs to change with audio power demands.
TROUBLE-SHOOTING GUIDE GYMPTOM . No power (blue PROBABLE CAUSE & SOLUTIONS remote turn-on l light is off) . . . Check connections to the amplifier’s + 12 volt, Ground, and remote lines Verify the appropriate voltages are at their terminals (1 l-1 5 VDC). Check the main power connection at the battery. Check fuse in power line. If fuse is blown, replace it. If it continues to blow, see your Blaupunkt dealer. Disconnect all speakers and try to power up unit.
LIMITED WARRANTY (UNITED STATES) Robert Bosch Corporation warrants new Blaupunkt audio products’and accessories it distributes in the United States through authorized Blaupunkt dealers, or which are imported as original vehicle equipment by the automobile manufacturer, to be free from defects in material and workmanship, in accordance with the following: For twelve (12) months after delivery to you, the original consumer purchaser, we will repair any amplifier and replace any accessory which under normal co
ACCESSORIES / ACCESSOIRES / ACCESORIOS There are four accessories available for your Velocity amplifier which increase its flexibility and guarantees high performance for years to come. 1 RM-1, REMOTE CONTROL: This control offers the consumer the capability of remotely controlling the gain of a subwoofer amplifier, or multiple amplifiers, from the front seat of the car. The control also has the capability to change the threshold (turn-on point) for the HUSHTM noise reduction inside the amplifiers.
VEIL OCITpM V450 TECHNICAL SPECIFICATIONS EEATURE/PARAMETER Channels Size (h x w x d) Weight Crimping style speaker terminals Maximum wire size Blue power-on LED Controls on one end/connectors on the other Noise reducing differential input circuits Inputs isolated from ground Subsonic filter Separate front/rear gains Spade type automobile fuses Speaker short, short to + 12V 81 ground protection High, low, reverse voltage protection Power output transistors hing power supply transistors pedance stability: V
Bosch Group Robert Bosch Corporation Sales Group - Blaupunkt Division 2800 South 25th Avenue, Broadview, Illinois 60153 Division Blaupunkt de Robert Bosch Inc. 6811 Century Avenue Mississauga, Ontario Canada L5N 1Rl Robert Bosch, SA., DE, C. V. Dr. Lucia 270 Cols.
