Velodyne Digital Drive Subwoofer User Manual
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Velodyne Digital Drive Subwoofer User Manual

Velodyne digital drive subwoofer user's manual
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Summary of Contents for Velodyne Digital Drive Subwoofer

  • Page 1 Digital Drive User’s Manual...

  • Page 2: Important Safety Instructions

    IMPORTANT SAFETY INSTRUCTIONS Caution: To reduce the risk of electric shock, do not remove cover (or back). No user-serviceable parts inside. Refer servicing to qualified service personnel. The lighting flash with arrowhead symbol is intended to alert the user to the presence of 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: Wichtige Sicherheitshinweise

    WICHTIGE SICHERHEITSHINWEISE Vorsicht: Zur Vermeidung von Gefahr durch elektrischen Schlag, Deckel (oder Rückwand) nicht abnehmen. Produkt enthält keine Anwenderteile. Reparatur und Wartung nur von qualifiziertem Fachpersonal vornehmen lassen. Das Blitzsymbol dient als Hinweis auf unisolierte „gefährliche Spannungen“ innerhalb des Gehäuses, deren Werte eine Berührungsgefahr für den Menschen darstellen können.
  • Page 4 Attention: Afin d’éviter tout risque d’électrocution, ne pas enlever le boitier (ou partie arrière de l’enceinte). Aucune pièce ne doit être manipulée par l’utilisateur. Pour tout entretien, vous référer à un personnel de service qualifié. Le symbol de l’éclair avec la flèche sert à avertir l’utilisateur de la présence d’un “voltage dangereux” non isolé dans l’enceinte du produit d’une magnitude pouvant constituer un risque d’électrocution de personnes.

  • Page 5: Table Of Contents

    About Room Equalization ... 24 Distortion in Loudspeakers ... 24 The Velodyne Digital Drive Servo-Control Solution ... 24 Care Of Your Digital Drive Subwoofer ... 25 Troubleshooting And Service ... 25 Protection and Circuitry ... 26 Digital Drive Software Updates ... 26 Appendix A: RS-232 Serial Overview and Commands ...

  • Page 6: Congratulations

    Congratulations! Congratulations on your purchase of a Velodyne Digital Drive subwoofer system! Digital Drive technology is the result of years of research and development, combining advanced Digital Signal Processing (DSP), software, equalizer, audio filter, digital amplifier, digital servo control, and high- pressure loudspeaker technologies.

  • Page 7: Package Contents

    Package Contents Your Velodyne Digital Drive Subwoofer consists of the following components: Digital Drive subwoofer Power cord Remote control Digital Drive Accessory Kit, consisting of: Calibrated precision microphone Microphone windscreen cover Tabletop microphone stand Microphone stand adapter 25-foot video cable...

  • Page 8: Remote Control

    Switchable Velodyne logo indicator Night Mode Maximum volume setting Save settings indicator Remote Control The Velodyne Digital Drive infrared remote control allows you to set up, adjust, and reset your subwoofer when connected to a television or a video monitor. You will also use your remote to activate preset listening values, set the subwoofer’s volume up or down, mute the subwoofer, or set a night operational mode.

  • Page 9: Digital Drive Accessory Kit

    Subwoofer Controls and Ports The Velodyne Digital Drive subwoofer is set up, configured, and adjusted by the controls, inputs, and connections located on the rear panel of the unit. Figure 2 shows the location of each of these important operational interfaces.

  • Page 10: Installation - Step-By-Step

    RS-232 IN – Use this port to communicate with your computer (for software updates), a touch panel remote control, or another upstream Digital Drive subwoofer. See Appendix A for an explanation of the use of the serial port, available commands, and their formats.

  • Page 11: A Word About Subwoofer Outputs

    2. Provide signal to your subwoofer through one or more of the following connections (refer to your receiver/processor owner’s manual for available inputs to the subwoofer): a. LFE INPUT (RCA, the RED jack at location 11 on Figure 2) — This is the most common input cable connection.

  • Page 12: A Word About Interconnect Cables

    5. Insert the XLR microphone cable’s 3-pin male plug into the MIC INPUT jack (location 7 on Figure 2) on the back panel of the subwoofer. For DD-15 and DD-18 units, a microphone jack is also located on the front of the unit for convenience. 6.

  • Page 13: Onscreen Programming And Setup - Overview

    You should be able to perform most of the setup process by using the four arrow keys and the SELECT button. Following is an overview of the screens you will be using to set up your Velodyne Digital Drive subwoofer. Figure 3: Introductory Screen See Figure 3.

  • Page 14: Figure 4: Eq Setup Screen

    Figure 4: EQ Setup Screen The EQ Setup screen includes a system response “sweep” window, and a graphic equalizer. You use these settings to equalize your room. The graphic equalizer features 8 bands, each of which can be used at its current frequency, or can be infinitely adjusted to the frequency and Q you desire. REMEMBER: Use the RIGHT and LEFT directional arrow buttons that surround SELECT to move through the fields of the setup screen, and change settings by using the UP and DOWN arrow keys.

  • Page 15: Figure 5: System Settings Screen

    Figure 5. System Settings Screen All six presets contain the following fields: Low Pass Crossover Frequency and Slope – Adjust the upper limit of your subwoofer’s frequency response. Select a crossover setting, in increments of 1, between 15Hz and 199Hz and slope at 6, 12, 18, 24, 30, 36, 42 and 48 dB/octave.

  • Page 16: Onscreen Programming And Setup - Step-By-Step

    Other controls on the Setting Setup screen: Auto On/Off Active/Inactive – When active, this control automatically shuts the subwoofer off after a length of time without any source signal. The woofer automatically wakes upon receiving input signal again. Night Mode Maximum Volume – When the NIGHT mode button is pressed on the remote, this setting is invoked.
  • Page 17 Upon pressing 5, you should see the following screen: Velodyne Digital Drive User’s Manual Page 12...
  • Page 18 7. Use the DD remote control to lower the subwoofer’s volume to 00. You can do this by simply holding down the VOL – button on the remote for a few seconds. 8. Raise the volume on your receiver/processor until the DD test sweep (a tone that sweeps from 20Hz up to 200Hz) can be heard from your system’s speakers.

  • Page 19: A Word About Room Placement

    A Word About Room Placement Room placement is the first step in equalizing your sub(s) to your room. Subwoofers operate at extremely low frequencies, which are primarily omni-directional (that is, you can’t usually tell where they are coming from). As a general rule, placing the sub(s) in the corner(s) of a room will result in the maximum number of peaks and minimum number of valleys in the response.
  • Page 20 NOTE: The subwoofer should be turned off when physically moving the unit. NOTE: If you are constrained in room location positions, don’t worry. By following the setup steps below, Digital Drive gives you lots of flexibility to make the most out of any room positioning. 11.
  • Page 21 You are now ready to adjust the crossover, subsonic filter, volume, and phase controls of your DD unit. NOTE: If the remote seems intermittent or unresponsive, be sure you are pointing it at the subwoofer and not your TV! AND REMEMBER: Use the RIGHT and LEFT directional arrow buttons that surround SELECT to move through the fields of the setup screen, and change settings by using the UP and DOWN arrow keys.
  • Page 22 TIP: To see immediate feedback on the effects of your changes to the system response graph, press the TEST button. The following screen appears: Velodyne Digital Drive User’s Manual Page 17...
  • Page 23 Note that displaying the System Response screen by using the TEST button from the System Settings screen ONLY allows you to view the system response - you cannot make any changes to EQs or volume. Press TEST again to return to the System Settings screen. NOTE: To bypass the low pass crossover, set the frequency to 199Hz.
  • Page 24 An “equalized” room is shown below: Velodyne Digital Drive User’s Manual Page 19...
  • Page 25 NOTE: The following steps use the parametric equalizer to achieve room equalization. If you do not wish to use the parametric EQ feature, skip to step 23. 20. To use the parametric EQ feature, position the cursor over the EQ and press the SELECT button. The values for that particular EQ appear on the right hand side of the screen.
  • Page 26 22. To unselect the EQ, press SELECT again, then use the right and left arrow keys to position the cursor on another EQ if desired, and repeat step 21, until the room is equalized. 23. Once the room has been equalized, you may want to return to the Settings Setup screen (by positioning the cursor over the NEXT field on the EQ setup screen and pressing SELECT) and review/modify the presets.
  • Page 27 EQs to demonstrate the effect the equalization of the subwoofer has on room response. 24. As a final thought on matching your Digital Drive subwoofer to your room, don’t forget the “objective listening” test. That is, make sure the unit sounds good to you! Often, you may want to add a bit more bass than what would normally be considered “flat”...

  • Page 28: Restoring Defaults

    10 seconds, then reset itself. Runtime Mode During normal use of your Digital Drive subwoofer, you can use the preset buttons to invoke certain presets, use the volume control to raise or lower the subwoofer’s volume, use the light and night buttons to control the logo light and night mode, respectively, and use the mute button to mute the subwoofer.

  • Page 29: About Room Equalization

    About Room Equalization This section gives some background on room equalization. As a sub plays in a room, the reflections of the sound waves off the walls create “standing waves,” that is, places in the room where certain frequencies are louder and others are diminished. In addition to standing waves, every room will also have locations where cancellations of the sound waves are like black holes that no amount of attenuation can fill.

  • Page 30: Care Of Your Digital Drive Subwoofer

    This combination provides you with the best combination of clean, deep, accurate bass, without making any sacrifice to distortion. Care of Your Digital Drive Subwoofer Do not use any harsh detergents or chemicals to clean the cabinet. Abrasives, detergents, or cleaning solutions may damage the finish on the cabinet.

  • Page 31: Protection And Circuitry

    If the protection circuitry is active, the unit may cycle on and off until operating parameters return to normal. Under more serious conditions, the unit may shut off completely. Normal operation will return upon cooling, but you may be required to unplug the unit momentarily. The following conditions require service by a qualified technician: 1.

  • Page 32: Appendix A: Rs-232 Serial Overview And Commands

    APPENDIX A: RS-232 Serial Overview and Commands Introduction This document outlines Velodyne’s Digital Drive (DD) RS-232 protocol specification. This protocol indicates how Velodyne 1812 and Digital Drive products receive run-time commands from devices such as Creston Universal Remote Controls. Com Port Setup Use standard communications settings: Baud Rate: 9600, Data Bits: 8, Parity: None, Stop Bits: 1 DD IN and OUT Port Pin Configuration DD serial ports use a standard configuration that allows direct connection to a PC via a FEMALE to...
  • Page 33 RS-232 Commands Command Activity Format Volume Control #VOnn$, #VO+$, #VO-$, #VO?$ Preset Control #PSn$, #PS?$ Logo Light Control #LTn$, #LT?$ Night Mode #NMn$, Control #NM?$ Mute Control #MUn$, #MU?$ Velodyne Digital Drive User’s Manual Acceptable n Values Example(s) 00 – 99 #VO25$, #VO+$, #VO-$, VO?$...

  • Page 34: Other Velodyne Subwoofer Products

    Other Velodyne Subwoofer Products: Velodyne Digital Drive User’s Manual Signature 1812 SPL Series II SPL-800 SPL-1000 SPL-1200 Deco System Deco System Deco Satellites CHT Series CHT-8 CHT-10 CHT-12 CHT-15 CHT Front Row System DLS Series DLS-3500 DLS-3750 DLS-4000 VX-10 Page 29...
  • Page 35 “OK, so how does this Digital Drive subwoofer sound? In a word, fabulous.” ..“Velodyne’s New Digital Drive Series is a huge advance in subwoofer technology.” - John E. Johnson, Jr. Secrets of Home Theater and High Fidelity, December 2003 “Not only was the little Velodyne the best small sub I’ve ever used, it was one of the very best subs...

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