TM Digital Drive User’s Manual
IMPORTANT SAFETY INSTRUCTIONS CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN 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.
WICHTIGE SICHERHEITSHINWEISE VORSICHT GEFÄHRLICHE SPANNUNG NICHT ÖFFNEN 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.
ATTENTION Risque d’électrocution Ne pas ouvrir 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.
Table of Contents Congratulations ............................................................................................................................... 1 Prior to Installation ..................................................................................................................... 1 Package Contents .................................................................................................................... 2 Product Features and Controls ........................................
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 highpressure loudspeaker technologies.
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 − 25-foot audio cable − 20-foot XLR microphone cable Product Features and Controls Subwoofer Prominent features of your new Digital Drive Subwoofer include: • Cones and motor
− − − 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.
Digital Drive Accessory Kit The Velodyne Digital Drive Accessory Kit contains the following six components: • • • • • • Calibrated precision microphone Microphone windscreen cover Tabletop microphone stand Microphone stand adapter 25-foot audio/video cable 20-foot XLR microphone cable Installation Overview Your new Velodyne servo subwoofer provides for a number of installation options. Read all the installation information below in order to determine which installation option is best for your system.
(1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) (12) (13) (14) POWER – Press the POWER switch to the ON position to activate the subwoofer. If the unit is to be left unused for an extended period of time, move this switch to the OFF position to prolong the life of the subwoofer. 117V~60Hz 15A – Connect your detachable AC power plug to this male interface connection. The detachable cord allows for easy replacement should the original be damaged.
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. Make a connection between this input and the LFE output or the subwoofer output of your receiver or processor; OR b.
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. Slide the microphone (male connector end first) down through the open, circular sleeve of the tabletop microphone stand. Position this assembly at a desired listening position from your subwoofer.
Onscreen Programming and Setup – Overview You are now ready to set up and adjust the onscreen audio settings of your Digital Drive subwoofer. This section provides an overview of the setup process. You will be doing all setup functions with the buttons of your Velodyne-supplied remote control and seeing the results on your TV screen. Words in all uppercase letters in the setup instructions (e.g., SELECT, MENU, etc.
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.
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. • Subsonic Filter Frequency and Slope – Set your subwoofer’s subsonic filter (low frequency limit), in increments of 1, between 15Hz – 35Hz and slope at 6, 12, 18, 24, and 48 dB/octave.
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. Night mode is indicated by the amber bar underlining the VELODYNE logo.
Upon pressing 5, you should see the following screen: Velodyne Digital Drive User’s Manual Page 12
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.
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.
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. Now that the room location has been chosen, turn off the subwoofer and the rest of your system and permanently route the wiring and reconnect to your subwoofer. 12.
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. 14.
TIP: To see immediate feedback on the effects of your changes to the system response graph, press the TEST button.
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. 15. Now adjust the low pass crossover slope.
An “equalized” room is shown below: Velodyne Digital Drive User’s Manual Page 19
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. The following screen is shown: 21.
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. This screen is shown below. NOTE: This step is required ONLY if you wish to customize the presets.
from the digital servo, and thus the least amount of distortion possible from the subwoofer. The “theatrical” setting relaxes the servo a bit to allow a bit more distortion to enter the playback, making an overall louder and more impressive sub for explosions and other theatrical content. The scale is 1 for theater (least amount of servo gain) and 8 for music (most amount of servo gain).
By pressing the SELECT button, you tell the system to save your settings and return to the introduction screen. Selecting NO returns without saving (i.e. whatever previous settings were in effect will be used), and CANCEL keeps you in setup mode. When the unit saves settings, you will see the video flicker and you may hear a slight tick in your main speakers. This is normal behavior. NOTE: The Digital Drive subwoofer stores all of its settings in internal “Flash” memory.
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.
by dual spiders for even greater linearity. We designed this motor to produce over one-inch (1-1/4" to be exact) of linear motion, with a maximum mechanical limit of 1-3/4" peak-to-peak. Also, with this unique configuration, the distortion products are reduced by a factor of two over conventional single coil structures with dramatically improved cone control. This driver alone would result in less distortion than any other non-servo design.
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. 2. 3. 4. The power cord has become damaged. The unit does not appear to operate normally or exhibits a marked change in performance.
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.
RS-232 Commands Command Format Acceptable n Values Volume Control #VOnn$, #VO+$, #VO-$, #VO?$ 00 – 99 #VO25$, #VO+$, #VO-$, VO?$ Sets volume to a value, increments volume up or down, or requests current volume setting Preset Control #PSn$, #PS?$ 1, 2, 3, 4, 5, 6 #PS1$, #PS2$, #PS3$, #PS4$, #PS5$, #PS6$, #PS?$ Activates the indicated preset, or requests the current preset Logo Light Control #LTn$, #LT?$ 0: Light Off 1: Light On #LT0$ #LT1$ #LT?$ Turns the Logo Light on or off, or requests ligh
Other Velodyne Subwoofer Products: Signature 1812 TM TM 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 Velodyne Digital Drive User’s Manual Page 29
“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 I’ve used.” -John Potis SoundStage!, April 2002 Velodyne Acoustics, Inc. 345 Digital Drive Morgan Hill, CA 95037 408.465.2800 voice 408.779.9227 fax 408.779.
