d & b audiotechnik Vi-GSUB User manual

VVi-GSUB
Manual 1.1 en

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General information
Vi-GSUB Manual
Version: 1.1 en, 08/2015, D2725.EN .01
Copyright © 2015 by d&b audiotechnik GmbH; all rights
reserved.
Keep this manual with the product or in a safe place
so that it is available for future reference.
When reselling this product, hand over this manual to the new
owner.
If you supply d&b products, please draw the attention of your
customers to this manual. Enclose the relevant manuals with the
systems. If you require additional manuals for this purpose, you
can order them from d&b.
d&b audiotechnik GmbH
Eugen-Adolff-Strasse 134, D-71522 Backnang, Germany
T [phone], F [phone]
[email protected], www.dbaudio.com

1. Safety precautions........................................................... 4
1.1. Information regarding the use of loudspeakers.................... 4
2. Vi-GSUB loudspeaker..................................................... 5
2.1. Product description.................................................................. 5
2.2. Connections............................................................................. 5
2.3. Operation................................................................................ 7
2.3.1. Controller settings................................................................ 8
2.4. Technical specifications.......................................................... 8
3. Manufacturer's declarations..................................... 10
3.1. EU conformity of loudspeakers (CE symbol)....................... 10
3.1.1. WEEE Declaration (Disposal)........................................... 10
Contents
d&b Vi-GSUB Manual 1.1 en 3

1.1. Information regarding the use of loudspeakers
Potential risk of personal injury
Never stand in the immediate vicinity of loudspeakers driven at a
high level. Professional loudspeaker systems are capable of
causing a sound pressure level detrimental to human health.
Seemingly non-critical sound levels (from approx. 95 dB SPL) can
cause hearing damage if people are exposed to it over a long
period.
In order to prevent accidents when deploying loudspeakers on the
ground or when flown, please take note of the following:
– When setting up the loudspeakers or loudspeaker stands,
make sure they are standing on a firm surface. If you place
several systems on top of one another, use straps to secure
them against movement.
– Only use accessories which have been tested and approved
by d&b for assembly and mobile deployment. Pay attention to
the correct application and maximum load capacity of the
accessories as detailed in our specific "Mounting instructions"
or in our "Flying system and Rigging manuals".
– Ensure that all additional hardware, fixings and fasteners used
for installation or mobile deployment are of an appropriate
size and load safety factor. Pay attention to the manufacturers'
instructions and to the relevant safety guidelines.
– Regularly check the loudspeaker housings and accessories for
visible signs of wear and tear, and replace them when
necessary.
– Regularly check all load bearing bolts in the mounting devices.
Potential risk of material damage
Loudspeakers produce a static magnetic field even if they are not
connected or are not in use. Therefore make sure when erecting
and transporting loudspeakers that they are nowhere near
equipment and objects which may be impaired or damaged by an
external magnetic field. Generally speaking, a distance of 0.5 m
(1.5 ft) from magnetic data carriers (floppy disks, audio and video
tapes, bank cards, etc.) is sufficient; a distance of more than 1 m
(3 ft) may be necessary with computer and video monitors.
1. Safety precautions
d&b Vi-GSUB Manual 1.1 en4

2.1. Product description
The Vi-GSUB is a compact high performance cardioid subwoofer
for use with d&b V-Point cabinets.
The Vi-GSUB houses two long excursion neodymium drivers in an
integrated cardioid setup: an 18“ driver in a bass-reflex design
facing to the front and a 12” driver in a two chamber bandpass
design radiating to the rear. The arrangement and tuning provide a
cardioid dispersion pattern using a single amplifier channel.
Its frequency response extends from 37 Hz to 115/95 Hz.
The enclosure is constructed from marine plywood with an impact
resistant black paint finish. The front of the cabinet is protected by
a rigid metal grill backed by an acoustically transparent foam.
Four rubber feet prevent cabinet movement and protect the bottom
panel against scratching. Correspondingly shaped recesses in the
top panel of the cabinet prevent cabinet movement when stacking
Vi-GSUBs.
Cardioid dispersion
Cardioid dispersion avoids unwanted energy behind the system
and greatly reduces the excitation of the reverberant field at low
frequencies providing the greatest accuracy of low frequency
reproduction. The subwoofers can be used as stand-alone solutions
or in stacked combinations with a minimum distance of 60 cm (2 ft)
between adjacent cabinets or between the subwoofers and a side
wall. When positioned in front of walls, the minimum distance to
rear walls is maintained by the wheels mounted at the rear of the
cabinet.
2.2. Connections
Cabinets with the weather resistant option (WR) are equipped with
a fixed input cable (PG type, H07-RN-F, 2 x 2.5 mm2 (AWG 13),
standard length 5.5 m (18 ft).
Pin equivalents of the applicable connector options are listed in the
table below.
NL4
M1+ 1– 2+ 2–
ST n.a. n.a. + –
PG n.a. n.a. Brown (+) Blue (–)
d&b SenseDrive
The SenseDrive feature within D12 amplifiers enables electrical
compensation for the properties of the loudspeaker cable used.
SenseDrive requires an additional sense wire. SenseDrive is
therefore only available with EP5 connectors and 5-wire cabling
for applicable loudspeakers.
Vi-GSUB loudspeaker
Cardioid dispersion pattern
Connector wiring
2. Vi-GSUB loudspeaker
d&b Vi-GSUB Manual 1.1 en 5

Note: When the D12 is operated in "Mix TOP/SUB mode",
the SenseDrive function is available on the output B connector
only.
In permanent installations SenseDrive can also be applied to
cabinets with NL4 connectors or fixed cable option (PG). The
connection of the negative signal wire (EP5 pin 4 of the respective
D12 output) to the SenseDrive wire (EP5 pin 5 of respective D12
output) is made in a breakout box close to the loudspeaker
cabinet. For an uncompromising SenseDrive performance the
connection should be done not more than 3 m (10 ft) away from
the loudspeaker.
d&b LoadMatch
With D80 and D20 amplifiers, the LoadMatch function enables the
amplifier to electrically compensate for the properties of the
loudspeaker cable used without the need for an additional sense
wire. For applicable loudspeakers, LoadMatch is therefore
independent of the connector type used.
Fixed cable connection
The Vi-GSUB loudspeaker is supplied with a cover plate [1] and a
rubber grommet feed through [2]. For indoor operation, these
items can be used to hide the connector panel, if required. For
unprotected outdoor operation, the connector panel must be
covered, i.e. both items must be used to achieve an IP degree of
protection of IP34.
To install the fixed cable connection, proceed as follows:
Tools required: Philips screw driver (#PH2).
1. Remove the knockout opening in the cover plate [1] and
attach the rubber grommet [2] correspondingly.
2. Insert the connection cable through the rubber grommet.
3. Undo the four screws of the connector panel.
4. Connect the cable wires to the screw terminal.
Þ Observe the correct polarity!
5. Push the cover plate towards the connector panel until it fits
into place.
6. Finally fix the cover plate together with the connector panel
using all screws.
Cover plate and rubber grommet
Step 1
d&b Vi-GSUB Manual 1.1 en6

Step 2 Step 3 Step 4/5 Step 6
Installing the fixed cable connection
NL4 connection with cover plate
The two NL4 connector sockets of the cabinet's connector panel
are located in a recess to allow the use of the cover plate [1]
together with NL4 cable connectors, as shown in the graphic
opposite.
Note: Neutrik NL4FC type connectors must be used for this
option.
The cover plate is equipped with two knockout openings to allow
daisy chaining of the loudspeaker.
To use the NL4 connection, proceed in the same manner as
described in the previous section .
2.3. Operation
NOTICE!
Only operate d&b loudspeakers with a correctly configured d&b
amplifier, otherwise there is a risk of damaging the loudspeaker
components.
Application Setup Cabinets per
channel
Vi-GSUB V-GSUB 2
Within applicable d&b amplifiers (except for the D6 amplifier), the
controller setup is available in Dual Channel or Mix TOP/SUB
mode.
NL4 cable connection with cover plate [1]
d&b Vi-GSUB Manual 1.1 en 7

2.3.1. Controller settings
For acoustic adjustment the 100 Hz function can be selected.
100 Hz circuit
If the 100 Hz circuit is selected, the upper operating frequency of
the system is reduced from 115 Hz to 95 Hz.
It can be used when actively driven Vi-GSUBs are used to
supplement V-Point cabinets operated in full range mode. The
100 Hz mode can also be used to compensate for the effect of
close coupling between the Vi-GSUB and V-Point cabinets
operated in CUT mode.
2.4. Technical specifications
Vi-GSUB system data
Frequency response (–5 dB standard) 37 Hz - 115 Hz
Frequency response (–5 dB 100 Hz mode) 37 Hz - 95 Hz
Max. sound pressure (1 m, free field)
with D80/D20/D12/30D 137/133/133/133 dB
(SPLmax peak, pink noise test signal with crest factor of 4)
Vi-GSUB loudspeaker
Nominal impedance 8 ohms
Power handling capacity (RMS/peak 10 ms) 800/3200 W
Components 1 x 18“ driver
1 x 12“ driver
Connections 2 x NLT4 F/M
optional 2 x NL4 M or 2 x EP5
Pin assignment NLT4 F/M and NL4 M: 2+ / 2–
EP5: 3: + / 4: –
Weight 61 kg (135 lb)
Vi-GSUB frequency response, standard and 100 Hz mode
d&b Vi-GSUB Manual 1.1 en8

Vi-GSUB cabinet dimensions in mm [inch]
d&b Vi-GSUB Manual 1.1 en 9

3.1. EU conformity of loudspeakers (CE symbol)
This declaration applies to:
d&b Vi-GSUB loudspeaker, Z0520
manufactured by d&b audiotechnik GmbH.
All production versions of these types are included, provided they
correspond to the original technical version and have not been
subject to any later design or electromechanical modifications.
We herewith declare that said products are in conformity with the
provisions of the respective EC directives including all applicable
amendments.
A detailed declaration is available on request and can be ordered
from d&b or downloaded from the d&b website at
www.dbaudio.com.
3.1.1. WEEE Declaration (Disposal)
Electrical and electronic equipment must be disposed of separately
from normal waste at the end of its operational lifetime.
Please dispose of this product according to the respective national
regulations or contractual agreements. If there are any further
questions concerning the disposal of this product, please contact
d&b audiotechnik.
3. Manufacturer's declarations
d&b Vi-GSUB Manual 1.1 en10

D2725.EN .01, 08/2015 © d&b audiotechnik GmbH
www.dbaudio.com