Velodyne Acoustics Digital Drive Subwoofer User Manual
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.
The exclamation point symbol is intended to alert the user to the presence of important operating and maintenance
(servicing) instructions in the literature accompanying the subwoofer.
1. Read Instructions -- All safety and operating instructions should be read before the subwoofer is operated.
2. Retain Instructions -- The safety and operating instructions should be retained for future reference.
3. Heed Warnings -- All warnings on the subwoofer and in the operating instructions should be adhered to.
4. Follow Instructions -- All operating and use instructions should be followed.
5. Water and Moisture -- The subwoofer should
sink, laundry tub, in a wet basement, near a swimming pool, or the like.
6. Carts and Stands -- The subwoofer should be used only with a cart or stand recommended by the manufacturer to avoid
injury from tipover.
7. Wall or Ceiling Mounting -- The subwoofer should be mounted to a wall or ceiling only as recommended by the
manufacturer.
8. Ventilation -- The subwoofer should be situated so that its location or position does not interfere with its proper ventilation. For example, the subwoofer 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 that may impede the flow of air
through the ventilation openings.
9. Heat -- The subwoofer should be situated away from heat sources such as radiators, heat registers, stoves,
orother subwoofers that produce heat.
10. Power Sources -- The subwoofer should be connected to a power supply only of the type described in the operating
instructions or as marked on the subwoofer.
11. Power-Cord Protection -- Power-supply cords should be routed so that they are not likely to be walked on or pinched
by items placed upon or against them, paying particular attention to cords at plugs, convenience receptacles, and the
point at which they exit from the subwoofer.
12. Caution: To prevent electrical shock, match wide blade of plug to wide slot, fully inserted.
13. Cleaning -- The subwoofer should be cleaned only as recommended by the manufacturer.
14. Nonuse Periods -- The power cord of the subwoofer should be unplugged from the outlet when left unused for a
long period of time.
15. Object and Liquid Entry -- Care should be taken so that objects do not fall and liquids are not spilled onto the enclosure.
16. Damage Requiring Service -- The subwoofer should be serviced by qualified service personnel when:
a. The power-supply cord or plug has been damaged.
b. Objects have fallen or liquid has been spilled into the subwoofer.
c. The subwoofer has been exposed to rain.
d. The subwoofer does not appear to operate normally or exhibits a marked change in performance.
e. The subwoofer has been dropped or damaged.
17. Servicing -- The user should not attempt to service the subwoofer beyond what is described in the operating
instructions.
18. Overloading -- Do not overload wall outlets, extension cords, or integral convenience receptacles as this can result
in a risk of fire or electric shock.
19. Replacement parts -- When replacement parts are required, be sure the service technician has used replacement parts
specified by the manufacturer or have the same characteristics as the original part. Unauthorized substitutions may
result in fire, electric shock, or other hazards.
20. Safety Check -- Upon completion of any service or service of repairs to this product, ask the service technician
toperform safety checks to determine that the product is in proper operating condition.
not
be used near water -- for example, near a bathtub, washbowl, kitchen
All other servicing should be referred to qualified service personnel.
Velodyne Digital Drive User’s Manual Page i
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.
Das Symbol mit dem Ausrufungszeichen dient als Hinweis auf wichtige, in den Unterlagen des Subwoofers
enthaltene Bedienungs- und Wartungsvorschriften.
1. Anleitungen lesen - Alle Sicherheits- und Bedienungsanleitungen vor Inbetriebnahme des Subwoofers
aufmerksam durchlesen.
2. Anleitungen aufbewahren - Die Sicherheits- und Bedienungsanleitungen zur späteren Bezugnahme
aufbewahren.
3. Warnungen beachten - Alle Warnungen am Subwoofer und in der Bedienungsanleitung unbedingt beachten.
4. Anleitungen befolgen - Alle Bedienungs- und Gebrauchsanleitungen genau befolgen.
5. Wasser und Feuchtigkeit - Subwoofer nicht in der Nähe von Wasser aufstellen, d.h. neben einer Badewanne,
Spüle, Waschmaschine, in einem feuchten Keller, in der Nähe des Swimmingpools o.ä..
6. Rollwagen und Ständer - Subwoofer nur mit einem vom Hersteller empfohlenen Rollwagen oder Ständer
benutzen.
7. Wand- oder Deckenbefestigung - Subwoofer nur den Herstellerempfehlungen gemäß an der Wand oder Decke
befestigen.
8. Belüftung - Subwoofer so aufstellen, daß die erforderliche Belüftung nicht behindert wird. D.h., Subwoofer
nicht auf einer weichen Oberfläche wie einem Bett, Sofa, Teppich o.ä. aufstellen, die die Belüftungsöffnungen
blockieren kann. Subwoofer gleichfalls nicht in einem Regal oder Schrank unterbringen, worin die Luftzufuhr
behindert wird.
9. Wärme - Subwoofer nicht in der Nähe von Wärmequellen, wie Heizkörpern, Wärmespeichern, Öfen oder anderen
wärmeerzeugenden Subwoofern aufstellen.
10. Netzanschluß - Subwoofer nur an eine der in der Bedienungsanleitung beschriebenen oder auf dem Subwoofer
angegebenen Stromquellen anschließen.
11. Netzkabelschutz - Netzkabel so verlegen, daß nicht daraufgetreten wird oder sie durch darauf-oder
dagegengestellte Gegenstände eingeklemmt werden können. Die Anschlußstellen des Netzkabels an
Steckdosen und am Subwoofer dabei besonders beachten.
12. „Vorsicht“: Zur Vermeidung von Gefahr durch elektrischen Schlag sicherstellen, daß der Schutzkontakt des
Steckers vollständig in die Steckdose eingeführt ist.
13. Reinigung - Subwoofer nur den Herstellerempfehlungen gemäß reinigen.
14. Betriebsfreie Zeiträume - Netzkabel des Subwoofers aus der Steckdose ziehen, wenn er über einen längeren
Zeitraum nicht benutzt wird.
15. Beschädigungen durch Gegenstände oder Flüssigkeiten - Es ist darauf zu achten, daß keine Gegenstände
auf das Gehäuse fallen oder Flüssigkeiten darauf verschüttet werden.
16. Beschädigungen, die eine Reparatur erforderlich machen - Subwoofer sollte von qualifiziertem Fachpersonal
repariert werden, wenn:
a. Das Netzkabel oder der Stecker beschädigt sind.
b. Gegenstände oder Flüssigkeiten in den Subwoofer gelangt sind.
c. Der Subwoofer dem Regen ausgesetzt wurde.
d. Der Betrieb des Subwoofers gestört ist oder seine Leistung deutlich nachgelassen hat.
e. Der Subwoofer fallengelassen oder beschädigt wurde.
17. Reparatur und Wartung - Durch den Benutzer auszuführende Wartungsmaßnahmen des Subwoofers sind auf
die in der Bedienungsanleitung angegebenen Prozeduren beschränkt.
18. Überlastung - Zur Vermeidung von Brandgefahr und elektrischem Schlag Wandsteckdosen,
Verlängerungskabel bzw. eingebaute Steckdosen nicht überlasten.
19. Ersatzteile - Wenn Ersatzteile benötigt werden, sicherstellen, daß der Servicetechniker entweder die vom
Hersteller angegebenen Ersatzteile benutzt oder Teile, die den Originalteilen entsprechende Kennwerte
besitzen. Die Verwendung von Ersatzteilen, die nicht zugelassen sind, kann Brände, elektrischen Schlag
oder andere Gefahren verursachen.
20. Sicherheitsprüfung - Nach Beendigung von Wartungs- oder Reparaturmaßnahmen an diesem Produkt vom
Servicetechniker Sicherheitsprüfungen zum Nachweis des ordnungsgemäßen Betriebszustandes vornehmen
lassen.
Alle anderweitigen Servicemaßnahmen von qualifiziertem Wartungspersonal durchführen lassen.
Velodyne Digital Drive User’s Manual Page ii
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.
Le symbol du point d’exclamation sert à avertir l’utilisateur que d’importants conseils de fonctionnement et de
maintenance (entretien) sont fournis avec l’enceinte d’extrêmes graves.
1. Lire le mode d’emploi - Tous les conseils de sécurité et de fonctionnement doivent être lus avant de mettre en
marche l’enceinte.
2. Garder le mode d’emploi - Il est conseillé de conserver les conseils de sécurité et de fonctionnement pour un
éventuel usage futur.
3. Avertissements - Il est important de se conformer à tous les conseils de fonctionnement concernant l’enceinte
et à toutes les instructions inscrites sur l’enceinte.
4. Suivre les conseils - Tous les conseils d’utilisation et de fonctionnement doivent être suivis à la règle.
5. Eau et humidité - Ne pas utiliser l’enceinte près d’une source d’eau - par exemple, près de la baignoire, d’une
bassine de lavage, d’un évier de cuisine, d’un bac à lavage, dans un sous-seul mouillé, près d’une piscine…
6. Pieds et Supports - N’utiliser que des pieds et supports recommandés par le fabricant.
7. Assemblage mural ou au plafond - Se conformer uniquement aux instructions du fabricant pour fixer l’enceinte
sur un mur ou sur un plafond.
8. Ventilation - Il est important de placer l’enceinte de telle sorte qu’elle ne gêne pas sa propre ventilation. Par
exemple, ne pas placer l’enceinte sur un lit, un canapé, sur la moquette, ou sur toute surface similaire qui
bloque les ouvertures de ventilation ; ne pas poser l’enceinte dans une meuble encastré ou fermé telle
qu’une bibliothèque ou un meuble qui empêche l’air de circuler par les ouvertures de ventilation de l’enceinte.
9. Chaleur - Placer l’enceinte loin de toute source de chaleur tels que radiateurs, compteurs thermiques, fours
ou autres enceintes dégageant de la chaleur.
10. Sources d’électricité - Ne brancher l’enceinte que dans une prise du type décrit dans le mode d’emploi ou
comme indiqué par le fabricant.
11. Protection du cordon électrique - Les cordons électriques doivent être fixés pour éviter que toute personne
ne marche dessus et que rien ne puisse être placé sur ou contre eux - faire tout particulièrement attention aux
cordons branchés dans des prises électriques, à des réceptacles et à leurs points de sorties de l’enceinte.
12. ”Attention : Afin d’éviter tout choc électrique, introduire la lame la plus large de la fiche dans la borne
correspondante de la prise et pousser jusqu’au fond”.
13. Nettoyage - Pour le nettoyage de l’enceinte, suivre scrupuleusement les instructions du fabricant.
14. Périodes de non-utilisation - Le cordon électrique de l’enceinte doit rester débranché si l’enceinte reste
inutilisée pendant une longue période de temps.
15. Infiltration d’objet ou de liquide - Faire attention à ce qu’aucun objet ne tombe et à ce qu’aucun liquide ne soit
versé sur l’enceinte.
16. Dommages nécessitant réparation - L’enceinte ne doit être réparée que par du personnel qualifié lorsque :
a. le cordon électrique ou la prise ont été endommagés.
b. Des objets sont tombés ou du liquide a été versé sur l’enceinte.
c. L’enceinte a été exposée à la pluie.
d. L’enceinte ne semble pas fonctionner normalement ou indique un changement de performance.
e. L’enceinte est tombée par terre ou a été endommagée.
17. Entretien - L’utilisateur ne doit pas tenter de réparer l’enceinte au-delà de ce qui est décrit dans le mode
d’emploi.
18. Surcharge - Ne pas surcharger les prises murales, les rallonges, ou les prises femelles encastrées de
commodité. On risquerait un incendie ou un choc électrique.
19. Pièces de rechange - Lorsque le remplacement d’une pièce s’avère nécessaire, s’assurer que le technicien
utilise la pièce spécifiée par le fabriquant, ou une pièce possédant les mêmes caractéristiques que la pièce
d’origine. Les substitutions non autorisées peuvent provoquer des incendies ou des chocs électriques, ou
présenter d’autres dangers.
20. Contrôle de sécurité - Après toute intervention technique sur ce produit (neuf ou réparé), demander au
technicien de procéder à un contrôle de sécurité pour vérifier qu’il est en bon état de marche.
Toute autre réparation doit être référée à du personnel qualifié.
Velodyne Digital Drive User’s Manual Page iii
Table of Contents
Congratulations ............................................................................................................................... 1
Prior to Installation..................................................................................................................... 1
Package Contents .................................................................................................................... 2
Product Features and Controls................................................................................................. 2
Subwoofer...................................................................................................................... ..... 2
Remote Control................................................................................................................... 3
Remote Control Buttons ..................................................................................................... 3
Digital Drive Accessory Kit.................................................................................................. 4
Installation Overview ....................................................................................................................... 4
Subwoofer Controls and Ports .................................................................................................. 4
Installation – Step-By-Step .............................................................................................................. 5
Subwoofer Cable Connections.................................................................................................. 5
A Word About Subwoofer Outputs ............................................................................................ 6
A Word About Interconnect Cables ........................................................................................... 7
A Word About Connecting More Than One Subwoofer............................................................. 7
Onscreen Programming and Setup ................................................................................................ 7
Onscreen Programming and Setup – Overview....................................................................... 8
Onscreen Programming and Setup – Step-By-Step ................................................................ 11
A Word About Room Placement ............................................................................................... 14
Restoring Defaults ............................................................................................................. ............. 23
Runtime Mode ................................................................................................................................. 23
About Room Equalization................................................................................................................ 24
Distortion in Loudspeakers.............................................................................................................. 2 4
The Velodyne Digital Drive Servo-Control Solution .................................................................... 24
Care Of Your Digital Drive Subwoofer ............................................................................................. 25
Troubleshooting And Service........................................................................................................... 25
Protection and Circuitry ............................................................................................................. 2 6
Digital Drive Software Updates ..................................................................................................26
Appendix A: RS-232 Serial Overview and Commands .................................................................. 2 7
Table of Figures
Figure 1: Velodyne Digital Drive Remote Control.......................................................................... 3
Figure 2: Digital Drive Rear Panel Connections ........................................................................... 4
Figure 3: Introductory Screen ....................................................................................................... 8
Figure 4: EQ Setup Screen ....................................................................................................... ... 9
Figure 5: System Settings Screen ................................................................................................ 10
Velodyne Digital Drive User’s Manual Page iv
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. The result is new, state-of-the-art in subwoofer design that takes
our traditionally accurate low-frequency sound reproduction to new levels of precision, eliminates
room anomalies, and resolves many tradeoffs that encumber lesser subwoofer designs.
This exceptional subwoofer will provide you with years of unparalleled listening pleasure. Enjoy!
Caution!
Please observe the following instructions to insure safe and proper system operation.
Warning!
To prevent fire or shock hazard, do not expose this equipment to rain or moisture. To avoid electrical
shock, do not open speaker enclosure or amplifier chassis cover. Please observe all warnings on the
equipment itself. There are no user serviceable parts inside. Please refer all service questions to your
authorized Velodyne dealer.
Prior to Installation
Please unpack the system carefully! This unit is heavy. Use caution when lifting or moving to avoid
injury. Remove all staples used to seal the carton as they can scratch the cabinet. Please save the
carton and all packaging materials for future use. Packing this unit in any other carton may result in
severe damage when shipping. Please take a moment to record the serial number and date/location
of purchase in the space provided on the warranty card for future reference or register on-line at
www.velodyne.com.
Caution!
This subwoofer has electronics built into the cabinet. Do not place the cabinet next to sources
of heat such as furnace registers, radiators, etc. Do not place the unit near sources of excessive
moisture, such as evaporative coolers, humidifiers, etc. The power cord should be routed in
such a way that it will not be walked on, pinched, or compressed in any way that could result
in damaging the insulation or wire.
Regardless of where you install your Velodyne subwoofer, it must remain in an upright position (woofer
facing forward). Using, shipping, or otherwise storing the subwoofer in any other position for an
extended period of time may result in damage to the unit not covered by warranty.
Certain types of televisions are particularly sensitive to stray magnetic fields. If your television produces
distorted colors after installing your subwoofer, simply increase the distance between your television
and the subwoofer, until normal color and operation is returned.
Important Note: Turn your subwoofer off before moving it!
Velodyne Digital Drive User’s Manual Page 1
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
Subwoofe
Prominent features of your new Digital Drive Subwoofer include:
• Cones and motor sizes:
• Built-in 1250 watt (RMS), 3,000 watt peak power high-efficiency Class-D amplifier
• Tandem 3" voice coils
• Multi-layer resin laminate cone
• High-excursion rubber surround
• Gain compression, anti-clipping circuit to prevent over excursion and amp clipping
• Fixed 80Hz high-pass crossover (RCA output)
• Balanced (XLR) input
• Line-level (RCA) inputs and outputs
• Speaker-level inputs
• V ariable volume control
• Frequency response of 20Hz – 120Hz +/-3dB
• Detachable 6-foot AC power cord
• Four rubber ¼-20” threaded support feet (aluminum with rubber inserts on 15” and 18”
• On-screen controls:
r
− 10" (8" piston diameter) or 12" (9.7" piston diameter) cone with 310 oz. magnet or,
− 15" (12.7" piston diameter) or 18" (15.2" piston diameter) cone with 380 oz. magnet
models)
− Graphic or Parametric Equalizer controls for room EQ
− Adjustable (15Hz – 199Hz) low-pass crossover
− Multiple staggered low-pass crossovers (6dB/octave, initial to 48dB/octave, ultimate)
− Adjustable (15Hz - 35Hz) subsonic filter
− Multiple staggered subsonic filters (12dB/octave, initial to 48dB/octave, ultimate)
− Variable volume control
− Adjustable phase control (0°, 15°, 30°, 45°, 60°, 75°, 90°, 105°, 120°, 135°, 150°, 165°,
180°)
− Selectable (+/-) polarity
− Theater/Music selection indicator
− Signal sensing auto turn on/off (defeatable)
− 6 presets for customized listening modes and EQ defeat
Velodyne Digital Drive User’s Manual Page 2
− 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.
Take care not to lose or misplace your remote control as adjustments to the subwoofer (with the
exception of volume control) can only be done using the remote.
NOTE: Two 1.5V AA batteries are required and included for operation of the remote control.
External remote eyes may be ordered from either Velodyne or your local Velodyne audio equipment
dealer.
Remote Control Buttons
A brief description of each button on the remote control follows:
••
• PWR – Causes woofer to stand by if in “Active” standby mode.
••
••
• Numeric keypad – Used to enter an unlock code to enter
••
SETUP mode.
••
• SET (+/-) – Increases (+) or decreases (-) a value in a
••
specified field.
••
• LIGHT – Turns the subwoofer’s front panel Velodyne logo
••
light on or off.
••
• NIGHT – Limits the output of the subwoofer, and illuminates
••
the logo’s amber underlining to signify that the subwoofer is
in night mode.
••
• VOL (+/-) – To raise or lower the volume of your subwoofer.
••
••
• MUTE – Mutes your subwoofer.
••
••
• EXIT – To exit SETUP mode. The unit will ask if you want to
••
save settings before exiting.
••
• SELECT — To toggle field values.
••
••
• RESET – Restores an entered value to its previous value.
••
••
• MENU – Enters SETUP mode from the introductory screen.
••
••
• PRESETS – To access the five preset and one EQ defeat
••
listening modes. Preset by Velodyne, they are user
adjustable.
Figure 1: Velodyne Digital Drive Remote Control
Velodyne Digital Drive User’s Manual Page 3
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.
Remember to perform all installation procedures with the subwoofer unplugged until instructed
to activate it!
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. Brief descriptions of each interface follow.
Figure 2: Digital Drive Rear Panel Connections
Velodyne Digital Drive User’s Manual Page 4
(1) 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.
(2) 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.
(3) 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.
(4) RS-232 OUT – Use this port to communicate with a second “daisy-chained” Digital Drive
subwoofer. Also, the 12V trigger feature requires a 12V trigger signal (polarity irrelevant)
across pins 7 and 9 of this port.
(5) S-Video – This connects to your S-Video compatible TV. NOTE: Only connect to a single
video output at a time.
(6) LFE INPUT – This XLR input jack receives the balanced LFE signal from your receiver or
processor.
(7) MIC INPUT – This XLR input jack is for your XLR microphone cable.
(8) EQ OUTPUT VIDEO/LEFT/RIGHT – Connect the audio/video cable from your accessory
kit to these jacks: yellow plug to VIDEO (connects to an available video input on your
processor or TV), white plug to LEFT, and red plug to RIGHT (these connect to an available
L/R input on your receiver or processor, such as AUX). NOTE: Only connect to a single
video output (i.e. composite or S-Video) at a time.
(9) THRU – These RCA connectors are for sharing the same signal that goes into your
subwoofer with a second “daisy-chained” subwoofer. RCA input comes out of the THRU
jack.
(10) OUTPUT – These RCA connectors incorporate the use of an 80Hz 6 dB/octave slope high
pass crossover.
(11) INPUT LFE – This RCA input jack is for line-level connection.
(12) REMOTE SENSOR - This connection allows for hook-up of the optional remote control
receiver. With this optional receiver plugged in you will be able to utilize the functions of
the remote to control power, volume and mute functions. Place the infrared receiver within
direct line of sight from your usual listening position.
(13) VOLUME UP/DOWN – Press the black UP pushbutton to incrementally raise your
subwoofer’s system volume; press the black DOWN pushbutton to incrementally lower
your subwoofer’s system volume. Note the use of these buttons during software updates.
(14) SPEAKER LEVEL INPUT RIGHT/LEFT – This speaker-level connector allows either banana
plug/jack or exposed wire/terminal connections.
Installation – Step-by-Step
To ensure a quick and flawless installation of your Velodyne Digital Drive unit, follow these numbered
setup instructions in their exact order.
Subwoofer Cable Connections
Make all necessary cable connections between the applicable subwoofer connector port and your
particular home electronics equipment in the following order:
1. Insert the detachable AC power cord into the 117V~, 60Hz, 15A power interface port on the rear
panel of your subwoofer. Plug the male end of the cord into a convenient wall outlet.
Velodyne Digital Drive User’s Manual Page 5
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 1 1 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. LFE INPUT (XLR, location 6 on Figure 2) — Make a connection between this input and the
balanced LFE outputs of your receiver or processor;
OR
c. INPUT, LEFT and RIGHT (location 11 on Figure 2) — Make a connection between these
inputs and the stereo outputs of your receiver or processor;
OR
d. SPEAKER-LEVEL INPUT (location 14 on Figure 2) — Make a connection between these
inputs and the left and right speaker connections on your receiver or processor. Make this
connection (Figure 2) by either inserting speaker wire into the correct polar terminals, or by
removing the banana plug jack caps and inserting banana plug wire into the jacks.
NOTE Refrain from routing connections permanently at this time to accommodate subwoofer room
placement as described below.
3. Establish the Line-level connection (optional). Connect to a pre-amplifier’s main outputs and return
them to your amplifier inputs. When installed in this fashion, your satellite speakers will be crossed
over at 80Hz, which removes the lower bass from your amplifier and speakers, enabling them to do
a better job reproducing high frequencies. By utilizing this method, you will have a bi-amplified
system, gaining improved power and headroom for your system.
A Word About Subwoofer Outputs
The Velodyne subwoofer is designed to operate using the full range audio signal for input when using
the digital built-in crossover. Some processors/receivers have a “subwoofer out” jack that is internally
filtered and designed to be used with a conventional amplifier and speaker. In some rare cases,
combining both an external crossover and the one internal to the subwoofer may result in low output
and increased noise. In these installations you may need to bypass the internal crossover in either the
processor or Velodyne subwoofer. In some installations, simply setting one crossover to a higher
frequency (such as 120Hz) will restore maximum performance. To bypass the subwoofer’s internal
crossover when the unit is being fed a low pass signal from another crossover, refer to the SETUP
instructions at step 14.
NOTE: If not using an external crossover, you should use the built-in crossover for optimal performance.
4. Connect the audio/video cable between your subwoofer (EQ OUTPUT VIDEO/LEFT/RIGHT – yellow,
white, and red, respectively) and your electronics (receiver, processor, TV, etc.). Insert the colorcoded cable plugs into the correct EQ OUTPUT receptacle – the yellow plug into the VIDEO jack,
the white plug into the LEFT jack, and the red plug into the RIGHT jack. The opposite ends of this
cable should be connected to your receiver/processor to an available audio input (e.g. AUX). The
yellow VIDEO cable goes to an available composite video input (e.g. aux), and the white/red AUDIO
(L&R) cables go to a corresponding audio input. Consult your receiver/processor and/or TV owner’s
manual for more information.
NOTE: Make sure the audio output goes into your AUDIO system, not your TV! The subwoofer will
generate test tones via the EQ Audio output jacks that are used to match the subwoofer to your
satellites and to correct for room anomalies. In this case, treat the subwoofer EQ audio output
as you would a CD player or other audio device to be played through your receiver or processor.
Velodyne Digital Drive User’s Manual Page 6
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