Seeburg Acoustic G Sub 1802 dp User manual

User Manual
G Sub 1802 dp
Version 3.4
07.10.2022

G Sub 1802 dp
1 Contents
2
1Contents
1Contents ..................................................................................................................................... 2
2Foreword..................................................................................................................................... 3
3Safety instructions.................................................................................................................... 4
4Connectors/Indicators.............................................................................................................. 6
4.1 Connection Panel ..............................................................................................................................6
4.2 Connectors .........................................................................................................................................7
4.3 Controls...............................................................................................................................................8
4.4 Status indication.................................................................................................................................8
5Operating.................................................................................................................................... 9
5.1 Starting up...........................................................................................................................................9
5.2 Selecting a bank ................................................................................................................................9
5.3 Setting level......................................................................................................................................10
5.4 Recalling presets .............................................................................................................................11
5.4.1 Preset Bank 1 –Default Settings....................................................................................................................11
5.4.2 Preset Bank 2 –Hypercardioid.......................................................................................................................12
5.5 Reprogramming of dp-speakers with preset audio files.............................................................13
5.6 Locking the buttons .........................................................................................................................13
5.7 Cardioid Mode..................................................................................................................................14
6Technical specifications ........................................................................................................ 16
7Declaration of conformity...................................................................................................... 17

G Sub 1802 dp
2 Foreword
3
2Foreword
The G Sub 1802 dp is a multi-functional premium class subwoofer with an integrated digital ampli-
fier providing 2400 Watt power @ 4 Ohm (AES) and a DSP controller. The two 18” long-excursion
neodymium driver is powered by the integrated amplifier. Various pre-configured presets and level
settings are available for selection.
The integrated DSP controller is based on the same operating principle as the stand-alone control-
lers HDLM 8 and DSP 2.6. A mere 0.8 ms latency (from analogue input to output) is achieved
through the use of a 96 kHz sample rate. The excellent signal to noise ratio is a further feature of
the DSP controller. Electronic simulation of a transformer balanced input provides additional pro-
tection against hum and buzz caused for example by external interference. High grade electronic
components from the industrial sector and first-class circuit design result in a robust device with
excellent audio characteristics and minimize disruptive noise.
The default state of the integrated DSP controller is the standard configuration as described in this
manual. Custom presets can be installed by the user, but must be programmed with the LPI (Loud-
speaker Programming Interface) by the manufacturer. The preset file is a custom audio file which is
simply played into the audio input of the controller. In this manner, individual configurations can be
created, for instance to accommodate the specific requirements of an installation project. Further-
more, should you ever be unsure as to the integrity of the DSP configuration of your controller, you
can obtain a fresh default file from SEEBURG acoustic line and re-install the original factory pre-
sets yourself. Efficient and intelligent limiter functions provide optimal protection without sacrificing
any of the potential of the system.
If you would like further information about SEEBURG acoustic line products, or have any com-
ments or suggestions regarding this handbook or the product, you can contact us here:
SEEBURG acoustic line Produktions- und Vertriebsgesellschaft mbH
Auweg 32
89231 Senden
07307 / 9700 –0
www.seeburg.com
[email protected]

G Sub 1802 dp
3 Safety instructions
4
3Safety instructions
Acoustic
Even a low input level can result in a sound pressure level at the
loudspeaker which can be damaging to your hearing. Do not remain
in close proximity to the loudspeaker when it is being operated. Use
hearing protection. Observe all relevant Health and Safety and Envi-
ronmental Protection regulations.
Mechanical
Movable parts and falling objects during installation and de-rigging
can cause serious injury. Observe at all times all relevant Health and
Safety regulations and regulations on the installation and operation of
PA systems.
Magnetic und electrical
Loudspeakers generate a magnetic field even without a source of
power connected. This can damage or destroy magnetic storage
devices. The PowerCon loop-through connector is under power when
the device is in operation. Observe all relevant safety regulations at
all times.
General safety precautions
The installation and de-rigging of this equipment should only be car-
ried out by appropriately qualified and experienced personnel, and
according to all relevant safety regulations. Find out about the appli-
cable regulations in the country you work in and comply with the re-
spective regulations.
Do not operate the loudspeaker if you have any doubts about the
safety of doing so, or if the loudspeaker shows any signs of faulty
operation. There are no user serviceable parts inside the device. For
repairs, contact your dealer or a qualified service technician.
The loudspeaker is a class 1 device requiring a 230 V / 50 Hz power
connection with earth contact.

G Sub 1802 dp
3 Safety instructions
5
If the loudspeaker is connected to a power source in which the volt-
age is too high, a protective mechanism is triggered which reliably
safeguards the amplifier module and DSP. Once triggered, the pro-
tection must be renewed by a qualified service technician.
Never open the housing. There are no user serviceable parts inside.
Do not expose the loudspeaker to rain, and avoid operating in envi-
ronments below -5° C or above 40° C. Be aware of the possibility of
condensation forming inside the housing due to rapid changes in
temperature. Allow the loudspeaker to adjust to ambient temperature
before operation. Leave the device switched on if operating in unfa-
vorable conditions.
To prevent overheating, do not operate the loudspeaker in the direct
vicinity of strong heat sources, and avoid direct sunlight. After long
periods of operation, the loudspeaker, particularly metallic compo-
nents such as the pole mount and the connector panel, can reach
temperatures exceeding 40° C.

G Sub 1802 dp
4 Connectors/Indicators
6
4Connectors/Indicators
4.1 Connection Panel
PowerCon grey (3)
XLR connectors (1)
PowerCon blue (2)

G Sub 1802 dp
4 Connectors/Indicators
7
4.2 Connectors
XLR connectors (1)
The G Sub 1802 dp should be connected with a standard symmetrically wired XLR cable. To con-
nect the input signal to further devices, use the male XLR Loop thru connector. To obtain full power
performance from the system, the signal source should be able to provide a minimum of 6 dBu
distortion free output voltage.
PowerCon blue (2)
Power supply input voltage 110-230 VAC. This connector provides the function of an on-off switch.
After powering on (turn the connector to the right until it locks), the systems starts up and is ready
for use after approximately 3 seconds. Avoid repeatedly switching the system on and off, particu-
larly when it is operating.
PowerCon grey (3)
110-230 VAC loop-through connector. This connector is to be used when multiple active loud-
speakers are to be provided with power from one source. Please observe carefully the maximum
power capacity of the power source.
The nominal power consumption of the G Sub 1802 dp under full
power is 4.0 A (measured with pink noise, Crest Factor 8). Transient
peaks can, however, cause much higher momentary power drain.
Observe carefully the nominal power consumption when connecting
the loudspeaker(s) to the power source, and observe carefully the
cut-off current of the safety circuit breakers. We recommend using the
loudspeaker on power circuits with circuit breakers with C characteris-
tic.

G Sub 1802 dp
4 Connectors/Indicators
8
4.3 Controls
Mode button:
Switch between the modes Status / Level and Presets.
Set button:
Set various values and Mute on/off.
4.4 Status indication
Mute LED:
Lights red when the system is muted (press the Set button in Status
Mode), or in technically critical conditions.
Limit LED:
Lights yellow when the limiter is limiting one or more amplifier chan-
nels.
Signal LED:
Lights green when a signal of more than -20 dBu is present. The LED
still lights up when the system is muted.
Power LED:
Lights when the system is powered up.

G Sub 1802 dp
5 Operating
9
5Operating
5.1 Starting up
When the system is switched on, it retains the settings from the previous usage. This also applies
to the Bank selection. The system is then in the Status Mode. If the red Mute LED is lit as a result
of the previous setting, no signal will be passed. Pressing the Set button once will un-mute the
system. The Mute LED will go off, and signal will be passed.
5.2 Selecting a bank
The loudspeaker presets are stored in the DSP controller in up to 3
banks. To change banks, press and hold the Mode button whilst the
loudspeaker is switched on.
1. Press and hold the Mode button.
2. Connect the power cable (PowerCon blue).
3. Corresponding LEDs blink to indicate the chosen bank.
4. Release the Mode button.
When the power cable is connected, the level and/or preset LED
lamps blink to indicate which bank is selected. The level LED blinks
to indicate the first bank, the preset LED for the second. The third
bank is indicated by both LEDs blinking.
If only one bank is programmed, there is no possibility to switch the
bank.
Bank 1 –Auslieferungszustand
Bank 2
Bank 3
LP 80Hz
LP 80Hz
-
LP 100Hz
LP 100Hz
-
LP 120Hz
LP 120Hz
-
Switchable Cardioid Mode
Switchable HyperCardioid Mode
-

G Sub 1802 dp
5 Operating
10
5.3 Setting level
After switching on and starting up, the G Sub 1802 dp is in Status
Mode. Pressing the Mode button once selects the Level Mode, in
which you can adjust the output volume in 3 dB steps. Seven different
values between +6 dB and -12 dB are available, with 0 dB being the
standard setting. The setting is made using the Set button. The green
LED above on the left indicates that you are in Level Mode, whereby
the four vertically arranged LEDs (now lighting up green) indicate the
respectively set value. If two adjacent LEDs light up, the intermediate
value of the printed levels is set.
Level setting options
+ 6 dB
+ 3 dB
- 3 dB
- 9 dB
0 dB
- 6 dB
- 12 dB

G Sub 1802 dp
5 Operating
11
5.4 Recalling presets
After switching on and starting up, the A2 dp is in Status Mode. Pressing the Mode button twice to
selects the Preset Mode. Three different presets can be called up using the set button. The green
LED above on the right indicates that you are in Preset Mode. The four vertical LEDs show the
selected preset during the selection.
If the lower LED lights up in addition to one of the three LEDs above, the Cardioid Mode is activat-
ed.
The following representations show examples of settings:
The preset “LP 80 Hz” is active.
The preset “LP 120 Hz” is active.
The Cardioid Mode is switched on.
5.4.1 Preset Bank 1 –Default Settings
LP 80:
Preset for use with a mid-high system (e.g. Galeo C, X8 or A8). The
acoustical cut-off frequency in this preset is 80 Hz.
LP 100:
Preset with a higher cut-off frequency for use with a smaller mid-high
system (e.g. X6 or A6). The acoustical cut-off frequency in this preset
is 100 Hz.
LP 120:
Preset with a higher cut-off frequency for use with a smaller mid-high
system (e.g. X2, X4 or GL24). The acoustical cut-off frequency in this
preset is 120 Hz.
Cardioid Mode:
The so-called backward attenuation of a subwoofer system (combina-
tion of at least 2x subwoofers) can be significantly increased with a

G Sub 1802 dp
5 Operating
12
cardioid. The cardioid function works regardless of the choice of three
possible presets. More details in section 5.7.
5.4.2 Preset Bank 2 –Hypercardioid
LP 80:
Preset for use with a mid-high system (e.g. Galeo C, X8 or A8). The
acoustical cut-off frequency in this preset is 80 Hz.
LP 100:
Preset with a higher cut-off frequency for use with a smaller mid-high
system (e.g. X6 or A6). The acoustical cut-off frequency in this preset
is 100 Hz.
LP 120:
Preset with a higher cut-off frequency for use with a smaller mid-high
system (e.g. X2 or X4 or GL24). The acoustical cut-off frequency in
this preset is 120 Hz.
Hypercardioid-Modus:
The so-called backward attenuation of a subwoofer system (combina-
tion of at least 2x subwoofers) can be significantly increased with a
cardioid. The hypercardioid function works regardless of the choice of
three possible presets. More details in section 5.7.

G Sub 1802 dp
5 Operating
13
5.5 Reprogramming of dp-speakers with preset audio files
By default, the built-in DSP controller is in a default configuration state that conforms to the descrip-
tion in the User Manual. The installation of special presets on the DSP controller can be done by
the user himself, since only a special preset audio file must be loaded. The programming of these
audio files via the LPI (Loudspeaker Programming Interface) can only be done by the manufactur-
er.
The preset is getting installed on the DSP by playing the preset audio file in the XLR input. This can
be done in different ways (MP3 player, smart phone, PC, CD player, ...). Installation via PC is done
as follows:
1. Use a mini-jack-XLR (stereo) cable to connect the headphone output to the XLR input of
the self-powered box. Use only one of the XLR connectors.
2. Mute the box by pressing the Set button in Status Mode. The Mute LED lights up. The DSP
controller can only receive data in the muted state.
3. Make sure your computer's volume is set to 100%.
4. Load the ".wav" file received from SEEBURG acoustic line into a music player.
5. Press the play button.
6. After a successful programming operation, the Mute LED turns off.
It is very important to ensure that the preset audio file is played in
single mode. Other music files in the playlist or on the data storage
medium will otherwise be played at full volume.
5.6 Locking the buttons
Press and hold the Set and Mode buttons simultaneously for more
than 3 seconds to lock the controls of the system. Repeat the action
to unlock the system.

G Sub 1802 dp
5 Operating
14
5.7 Cardioid Mode
The Cardioid Mode serves to generate a cardioid response pattern for the subwoofers. Using this
mode, a significant reduction in bass energy emission to the rear of the system can be achieved. A
minimum of 2 subwoofer units is required. Multiples of three is better. Specialised signal processing
creates controlled interference patterns between the sources, leading to the desired cancellation to
the rear.
In order for the interaction between the sources to function correctly and generate the desired car-
dioid response, the subwoofer system must be set up at least 1.5 m away from any bordering sur-
face such as a wall or solid stage front.
Installation using two subwoofers:
The G Sub 1802 dp that is in Cardioid Mode must be positioned such that the front of the unit is
facing the rear, whilst a second G Sub 1802 dp which is not in Cardioid Mode faces the front as
normal. The level of the rear-facing G Sub 1802 dp must be reduced by 6 dB compared to the
front-facing subwoofer if the cardio system consists of only two subwoofers.
Note:
Both subwoofers must be set to the same cut-off frequency. The cardioid preset of rear-facing
subwoofer must be activated and the level has to be reduced by 6 dB.
Application example:
Only the rear-facing subwoofer is operated in Cardioid Mode. This applies regardless of whether
the two units are stacked on top of each other or laid side by side on the ground.
e.g. G Sub 1802 dp
100 Hz, not in Cardioid Mode, Level 0 dB
G Sub 1802 dp
100 Hz, Cardioid Mode, -6 dB

G Sub 1802 dp
5 Operating
15
Installation using three subwoofers (recommended):
The performance of the cardioid configuration is better when 3 subwoofers are used together. The
units can be stacked on top of each other or laid side by side on the ground. If in a stack, the low-
est unit should face the rear. If laid side by side, the middle unit faces the rear.
As in the previous example with two subwoofers, the rearwards facing subwoofer is operated in
Cardioid Mode. The two forwards facing units are operated as normal without the Cardioid Mode
activated (e.g. two G Sub 1802 dp with the Cardioid Mode not selected). All of the subwoofers in
the configuration should be operating at the same level and with the same cut-off frequency to get
the best result.
Note:
Both subwoofers must be set to the same cut-off frequency. The cardioid preset of rear-facing
subwoofer must be activated.
Application example:
Only the rear-facing subwoofer is operated in Cardioid Mode. This applies regardless of whether
the two units are stacked on top of each other or laid side by side on the ground.
G Sub 1802 dp
80 Hz, Cardioid Mode, 0 dB
e.g. G Sub 1802 dp, 80Hz,
not in Cardioid Mode, 0 dB
e.g. G Sub 1802 dp, 80 Hz,
not in Cardioid Mode, 0 dB

G Sub 1802 dp
6 Technical specifications
16
6Technical specifications
Speaker Components
2 x 18" Nd (4,5" VC)
Description
Digitally Powered Bass Extension
Amp Power
2400 W AES / 110-230 V
Rated Current
4,0 A @ 230 V
SPL (Peak @ 1m)
144 dB
Max. Input Signal
25 dBu
DSP
HDLM FPGA Processing 32 bit floating point
AD / DA
24 bit / 96 kHz
Latency
0,8 ms (analog in to analog out)
Usable Range (-6dB)
30 Hz - 200 Hz (-6dB)
Tuning Frequency Excursion minimum
36 Hz
Connectors
Neutrik XLR in/out
Neutrik PowerCon in/out
Neutrik Speakon NL4MP out
Handles
12 x
Rigging / Fittings
M20 on top and side
Wheelboard fittings
Weight
82,5 kg
(+ 12 kg wheelboard)
Size height x width x depth
58,0 x 116,0 x 78,0 cm
Order No.
00640/dp
The technical data sheet and further information about possible applications for the system and
available accessories can be downloaded at the following Internet address:
https://www.seeburg.net/download_getfile.php?file=downloads/06-Datenblaetter/G-Subwoofer/G-
Sub-1802-dp_Datenblatt_dt.pdf

G Sub 1802 dp
7 Declaration of conformity
17
7Declaration of conformity
EG Declaration of conformity
This product
GSub 1802 dp
confirms to the following EU guidelines, including any additions:
2006/95/EG, Low Voltage
2004/108/EG, Electromagnetic Compatibility
(Locations: Appendix 1, Paragraph 1, a and b)
The following standards have been applied:
DIN EN 60065
DIN EN 55103-1:1996, classes E1 to E4
DIN EN 55103-2:1996, classes E1 to E4
Declared by: Winfried Seeburg, SEEBURG acoustic line GmbH
Place and date: Senden, 01.10.2019
Legally binding sign: ____________________________________________
The attachments constitute part of this declaration. This declaration certifies conformity with the
listed guidelines, but does not guarantee any product characteristics. The safety precautions listed
in the product documentation must be observed.
SEEBURG acoustic line Produktions- und Vertriebsgesellschaft mbH
Auweg 32
89231 Senden
07307 / 9700 –0

SEEBURG acoustic line
Produktions- und Vertriebs GmbH
Auweg 32
D-089250 Senden-Freudenegg
Fon: [phone]
Fax: [phone]
www.seeburg.com
[email protected]
Benutzerhandbuch / User Manual
Irrtum bei Beschreibung
sowie technische
Änderungen vorbehalten.
Alle SEEBURG acoustic line
Produkte sind nur für den
gewerblichen Einsatz bestimmt.
All specifications are
current at the time of publishing
but are subject to change.