Velodyne ULD-12 Owner's Manual

Velodyne ULD-12 Owner's Manual

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Velodyne
OWNER'S
MANUAL
ULD-12
Subwoofer System

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Summary of Contents for Velodyne ULD-12

  • Page 1 Velodyne OWNER'S MANUAL ULD-12 Subwoofer System • •...
  • Page 2: Safety Instructions

    SAFETY INSTRUCTIONS CAUTION: To reduce the risk of shock, do not remove cover (or back). No user-serviceable parts inside. Refer service qualified personnel. C::Ol'1,Ilf'nm flash arrowhead The lightning with within equilateraltrfangle. intended to alert the user the presence uninsulated "dangerous voltage" within the product's enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons.
  • Page 3: Installation

    Because your satellite speakers cannot reproduce bass as accurately as the ULD~ 12, Crossover. optimum system performance is attained by rolling off the low end response of your satellites. The ULD-12 is equipped with a high pass crossover for this purpose. To use the crossover, simply drive your power amplifier or satellites from the ULO-12's outputs.
  • Page 4 INSTALLATION OF ULO-12 USING FROM AMPLIFIER INPUTS Figure 1 shows how to connect your ULD-12 to a receiver or integrated amplifier. When using the speaker level terminals, note the right and left channel designations above the terminals. Red speaker jacks are positive, black speaker jacks are negative (common).
  • Page 5: Power Amplifier

    • INSTALLATION OF ULD-12 USING LINE INPUTS Figure 2 shows how to install your UlO-12 between a pre-amplifier and power amplifier. If you are connecting to the monaural subwoofer output of a surround sound decoder, then run a single phono cable from the decoder's sub out to the MONO IN jack on the UlO-12 controller.
  • Page 6 Keep;n mind that frequency response and output level can be greatly influenced by placement, depending on acoustic properties afthe listening room. Typically the· ULD-12 will sound louder next to a wall or in a carner. Caution: The ULD-12 amplifier is built intathe woafercabinet. Do not place cabinet nextto sources heat such as furnace registers, etc.
  • Page 7: Care Of Your Subwoofer

    PROTECTION CIRCUITRY Your ULD-12 is equipped with a special druit designed to protect the unit from damage. Either of the two con- ditions below will power the unit down and keep it off for 5 seconds atter the fault is corrected.
  • Page 8 Motional feedback has been used prevfously in an attempt to make small woofers sound like larger,more powerful ones. At Velodyne,the use of motional feedback is applied to make what is already a large and powerful woofer achieve a level of performance that has never before been reached in a home entertainment product.
  • Page 9 FEEDBACK SIGNAL Figure 4: Servo Series System Block Diagram Power Amplifier. The ULD-12 amplifier must provide power for distortion correction as well as basic music reproduction. Custom Drivel'. Although our HGS electronics play the most important role in reducing distortion,...
  • Page 10 ™ VELOOYNEULD .. 12 SUBWOOFERSVSTEM·SPECIFICATIONS Amplifier Type: Integrated Class Power: 100 watts continuous RMS, 400 watts peak 11 OK Stereo Input: Line level sensitivity- 100 m V nominal Speaker level sensitivity - 1 volt nominal Driver Diameter: 12 inches Linear travel: 9116"...

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