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Summary of Contents for ULD-15

Page 1: ...Velodyne OWNER S MANUAL ULD 15 ULD 18 Series II Subwoofer Systems...

Page 2: ...cause a dangerous short circuit Keep connections out of reach of children Prior To Installation Your ULD Subwoofer System includes the following Ihree separate components 1 A cabinet incorporating th...

Page 3: ...some heat Please maintain adequate ventilation The power cord should be routed in such a way that it will not be walked on pinched or compressed 4 Install the supplied 25 phono cable between the SERVO...

Page 4: ...ant The Velodyne controller may be used to tine tune the bass output if desired Crossover Modification Your ULD subwoofer has an active crossover network Both the high and low pass filters are set for...

Page 5: ...s original controller Compare serial numbers if you are ever unsure of which driver goes with which controller PRE AMPLIFIER POWER AMPLIFIER SOURCE INPUTs PRE AMP OUTPUTS POWER AMP INPUTS 0000 0000 0...

Page 6: ...nit during extended periods of nonuse PROTECTION CIRCUITRY Your ULD subwoofer is equipped with several electrical circuits designed to protect the unit from damage Any of the following conditions will...

Page 7: ...sums and differences of integer multiples of the applied tones In general 3 nonlinear distortion is considered a reasonably small amount This means that 3 of the total energy leaving a loudspeaker is...

Page 8: ...at the motor is Hnked to the power amplifier as part of a control system The basis for the control action is the Signal obtained from an accelerometer which is rigidly fastened to the voice coil The s...

Page 9: ...l because of its two level power supply switching method The amplifier receives high voltage only when demanding musical peaks are detected 15 or 181nch Driver Although our HGS electronics play the mo...

Page 10: ...ular active 85 Hz 12 dB per octave Modular active 85Hz 12 dB per octave Floor firing 31 1 2 x23 1 2 x 21 1 2 LWH 1051bs Walnut Oak BlaCK 17 x 31 2 x 11 lWH 151bs Optional 19 Rack Mount ULD 15 SERIES I...

Page 11: ...tion For example the appliance should not be situated on a bed sofa rug or similar surface that may block the ventilation openings or placed in a built in installation such as a bookcase or cabinet th...

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