d & b audiotechnik Bi8-SUB User manual

BBi8-SUB
Manual 1.1 en

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General information
Bi8-SUB Manual
Version: 1.1 en, 03/2019, D2728.EN .01
Copyright © 2019 by d&b audiotechnik GmbH; all rights
reserved.
Keep this document with the product or in a safe place
so that it is available for future reference.
We recommend you to regularly check the d&b website for the
latest version of this document.
When reselling this product, hand over this document to the new
owner.
If you supply d&b products, please draw the attention of your
customers to this document. Enclose the relevant documents with
the systems. If you require additional documents 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]

1 Safety precautions.............................................................. 4
1.1 Information regarding the use of loudspeakers........................ 4
2 Bi8-SUB 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........................................... 9
3.1 EU conformity of loudspeakers (CE symbol)............................ 9
3.1.1 WEEE Declaration (Disposal)................................................. 9
Contents
d&b Bi8-SUB 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 Bi8-SUB Manual 1.1 en4

2.1 Product description
The Bi8-SUB is an actively driven, compact, high performance
subwoofer.
The cabinet houses two 6.5" LF driver with ferrite magnets in a
bass-reflex design. Its frequency response extends from 43 Hz to
170 Hz/125 Hz.
The enclosure is constructed from marine plywood with an impact
resistant paint finish. The front of the cabinet is protected by a rigid
metal grill backed by an acoustically transparent foam.
Two M8 threaded inserts are incorporated, one on each side
panel to allow the attachment of a dedicated horizontal bracket.
The threads are covered by dummy caps in cabinet color. The caps
must be removed before mounting any accessories.
The bottom panel and one side panel are equipped with four
circular recesses to accept the enclosed rubber feet. The rubber
feet can be attached if desired and are intended to prevent cabinet
movement and protect the respective panel against scratching.
2.2 Connections
The cabinet is fitted with a pair of NL4 M connectors and a two
pole screw terminal block (ST). All four pins of both NL4
connectors are wired in parallel. The cabinet uses the pin
assignments 2+/2–. Pins 1+/1– are designated to full range
cabinets.
Pin equivalents of the applicable connector options are listed in the
table below.
NL4 M 1+ 1– 2+ 2–
ST n.a. n.a. + –
d&b LoadMatch
With the d&b four channel amplifier platform, 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 Bi8-SUB 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.
Connector wiring
Cover plate and rubber grommet
2 Bi8-SUB loudspeaker
d&b Bi8-SUB Manual 1.1 en 5

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.
Step 2 Step 3 Step 4/5 Step 6
Installing the fixed cable connection
NL4 connection with cover plate
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.
Step 1
NL4 cable connection with cover plate [1]
d&b Bi8-SUB Manual 1.1 en6

WR option (Weather Resistance)
A number of d&b loudspeakers are available in special options
suitable for different types of installed applications and
environmental conditions. The following options are available for
the Bi8-SUB loudspeaker:
▪ Weather resistant (WR): This option is suitable for outdoor use.
The cabinets have an impact and weather protected black PCP
(Polyurea Cabinet Protection) finish.
▪ Sea water resistant (SWR): This option is suitable for outdoor
use, especially in wet and acid or salty environments.
WR cabinets are equipped with a recessed connector panel
including a Faston type connector (2 x 6.3 mm, female). A cover
plate which accepts single or dual PG cable glands (Type PG13.5
for cable diameters from 6 - 12 mm) is enclosed, as shown in the
graphic opposite.
To install the fixed connection cable, please proceed as follows:
Tools required: Screw driver (#T20).
Note: Observe the correct polarity of the cable
Brown (+) / Blue (—).
1. Insert the connection cable through the PG screwing and
connect the male connector to the female connector.
2. Push the cover plate towards the connector panel until it fits
into place.
3. Fix the cover plate to the connector panel using the four
countersunk screws.
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.
Applicable d&b amplifiers:
10D/30D/D20/D80/D6.
Amplifier output mode(s): Dual Channel or Mix TOP/SUB
Application Setup Cabinets per
channel
Bi8-SUB B8-SUB 2
Faston type connector, male single PG (standard), dual PG
(optional)
d&b Bi8-SUB Manual 1.1 en 7

2.3.1 Controller settings
For acoustic adjustment the 100 Hz mode can be selected.
100 Hz mode
It can be used when actively driven Bi8-SUB cabinets are used to
supplement TOP cabinets operated in full range mode, for
example in a distributed sound system. The 100 Hz mode can also
be used to compensate for the effect of close coupling between the
Bi8-SUB and TOP cabinets operated in CUT mode.
2.4 Technical specifications
System data
Frequency response (–5 dB standard) 43 Hz - 170 Hz
Frequency response (–5 dB 100 Hz mode) 43 Hz - 125 Hz
Max. sound pressure (1 m, free field)
with 10D/D6 120 dB
with 30D/D20 122 dB
with D80 122 dB
(SPLmax peak, pink noise test signal with crest factor 4)
Loudspeaker data
Nominal impedance 8 ohms
Power handling capacity (RMS/peak 10 ms) 200/800 W
Components 2 x 6.5" driver with ferrite magnet
Connections 2 x NL4 M
1 x screw terminal (ST - up to 4 mm2/AWG 11)
WR option: Faston type connector 2 x 6.3 mm, female
Pin assignment NL4 M: 2+/2–
WR option: brown +/blue –
Weight 17 kg (37.5 lb)
Bi8-SUB cabinet dimensions in mm [inch]
Bi8-SUB frequency response, standard and 100 Hz modes
d&b Bi8-SUB Manual 1.1 en8

3.1 EU conformity of loudspeakers (CE symbol)
This declaration applies to:
d&b Bi8-SUB loudspeaker, Z0631
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 Bi8-SUB Manual 1.1 en 9

D2728.EN .01, 03/2019 © d&b audiotechnik GmbH
www.dbaudio.com