Adams Amplifier Sub8 User Manual

							Sub8
Operation Manual / BedienungsanleitungEnglish / Deutsch
Sub8  
						

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Please read the following safety instructions \fefore setting up your system. 
\beep the instructions for su\fsequent reference. Please heed t\che warnings and 
follow the instructions.Caution: To reduce the risk of e\clectric shock, do not open the\c su\fwoofer. 
There are no user-servicea\fle parts inside. Refer servicing  to qualified 
service personnel.
This product, as well as all attached extension cords, \fust be ter\finated with 
an earth ground three-conductor \bC \fains power cord like the one supplied 
with the product. To prevent shock hazard, all three co\fponents \fust always 
be used.
Never replace any fuse with a value or type other than those specified. Never 
bypass any fuse.
\blways switch off your entire syste\f before connecting or disc\nonnecting any 
cables, or when cle\naning any co\fponents.
Do not place this unit on an unstable cart, stand or tripod, bracket or table. The 
unit \fay fall, causing seriou\ns injury and/or serious da\n\fage. When cart is used, 
use caution when \foving the cart/apparatus co\fbination.
Do not expose this product to rain or \foisture, never wet the inside with any 
liquid and never pour or spill l\niquids directly onto this unit. Please do\n not put 
any objects filled wi\nth liquids (e.g. vases, etc.) onto the speaker.
Check if the specified voltage \fatches the voltage of the power supply you 
use. If this is not the case do not conne\nct the loudspeakers to a power source! 
Please contact your local dealer o\nr national distributor.
CautionRisk of electrical shockDo not open
Risque de shock electrique Ne pas ouvrier
CAUTION: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT REMOVE BACK COVER OR ANY OTHER PART. NO USER-SERVICABLE PARTS INSIDE.
DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE. REFER SERVICING TO QUALIFIED PERSONNEL.
Safety Instructions   
						

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Sub8 Manual / English
Protect the cord fro\f being walked on or pinched.
\blways use fully checked cables. Defective cables can har\f your speakers. They 
are a co\f\fon source for any kind of noise, hu\f,\n crackling etc.
\blways keep electrical equip\fent out of the reach of children.
\blways unplug sensitive electronic equip\fent during lightn\ning stor\fs.
The 
  Subwoofer should be installed near the socket outlet and disco\nnnection of 
the device should be eas\nily accessible.
To co\fpletely disconnect fro\f \bC \fains, disconnect \nthe power supply fro\f 
the \bC receptacle.   Never use fla\f\fable or \nco\fbustible che\ficals for cleaning 
audio co\fponents. 
\bvoid touching the speaker \fe\fbranes and do not bloc\nk the woofer’s 
ventilation ports. 
Never expose this product to extre\fely high or low te\fperatures. Never 
operate this product in an explosi\nve at\fosphere.
High SPL’s \fay da\fage your hearing! Please\n do not get close to the 
loudspeakers when using the\f at high volu\fes.
Please note that the diaphrag\fs build up a \fagne\ntic field. Do not pl\ny with 
\fagnetic ite\fs at close range to the diaphrag\fs.
\bssure free airflow behind the speakers to \faintain sufficient cooling.
Safety Instructions   
						

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Ta\fle of contents
 
Safety Instructions ..................\n..................\n......... 2-3
1.   Introduction  ..................\n..................\n..................\n. 5
2.  Quick Start   ..................\n..................\n..................\n.. 6
2.1  I\fportant Infor\fation   ..................\n..................\n... 6
2.2  Quick Start   ..................\n..................\n..................\n.. 6
3.  Connecting the Subwoofer   ..................\n.............. 7
3.1  Connections  ..................\n..................\n..................\n 7
3.2  Input ..................\n..................\n..................\n............ 7
3.3  Satellite Out  ..................\n..................\n..................\n. 7
3.4  LEDs ..................\n..................\n..................\n............ 7
4.  Subwoofer Place\fent   ..................\n..................\n.... 8
4.1  Distance to satellites  ..................\n..................\n..... 8
4.2  Walls/Distance to walls  ..................\n..................\n.8
4.3  Finding the opti\fu\f position  ..................\n..........8
5.  Controls  ..................\n..................\n..................\n....... 9 -1 0 
5.1  Controls on front panel and Re\fote Control  .....9
5.2  Controls on rear panel  ..................\n..................\n... 10
6.  Trouble Shooting  ..................\n..................\n............ 11
6.1  No or distorted signal  ..................\n..................\n.... 11
6.2  Parasitic noises  ..................\n..................\n............. 11
7.   Maintenance  ..................\n..................\n..................\n 12
8.  Shipping / Packaging   ..................\n..................\n.... 12
9.  Environ\fental Infor\fation   ..................\n.............. 12
10 .   EU Declaration of Confor\fity  ..................\n..........13
11 .   Li\fited Warranty   ..................\n..................\n........... 14
11 . 1  Ter\fs and Conditions  ..................\n..................\n.... 14
11 . 2  How to clai\f  ..................\n..................\n..................\n 14
12 .   Technical Data   ..................\n..................\n............... 15   
						

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Sub8 Manual / English
1. Introduction
Dear custo\fer,
Thank you for choosing an \bD\bM \budio Sub8 subwoofer.
\bD\bM  subwoofers  are  built  for  \faxi\fu\f  quality  reproduction  and  audio  perfection. 
With  the  Sub8  you  have  selected  a  powerful  and  precise  tool  that  allows  you  to  both 
evaluate and enjoy audio recordings. It \feets highest expectations in sound quality and 
crafts\fanship.
The  Sub8  is  a  co\fpact  active  subwoofer.  It  is  perfectly  suited  for  a  wide  variety  of 
stereo and \fulti-channel applications including s\fall control roo\fs, desktops, \fobile 
facilities  and  post-production  edit  bays   …  in  other  words,  in  any  situation  where  a 
co\fbination of no-co\fpro\fise sound reproduction and a s\fall\n footprint is required.
This \fanual is intended to provide you with infor\fation about your new \bD\bM subwoofer. 
It  contains 
important  information  regarding  safety,  setting  up,  handling,  and 
warranty. We request that you read these sections carefully to ensure easy set up and 
prevent potential proble\fs.
If  you  have  any  questions  about  this  or  any  of  our  products,  please  don’t  hesitate  to 
contact us – we will be happy to assist you.
For  detailed  infor\fation  concerning  \bD\bM’s  technologies  and  products,  co\fplete 
reviews,  and  a  list  of  worldwide  \bD\bM  users  and  studios,  please  visit  our  website: 
www.adam-audio.com
You are invited to share your experience with our products by joining us on Facebook 
and  also, if you don’t want to \fiss out on the latest info  on \bD\bM Professional \budio, 
co\fe and  follow us on Twitter!
We  hope  very  \fuch  that  you  really  enjoy  your  new  subwoofer  and  wish  you  \fany 
delightful hours with it.
The \bD\bM \budio Tea\f   
						

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2.1 Important Information for set up
\bfter having unpacked your subwoofer, please allow the syste\f to accli\fate to 
the te\fperature of the roo\f for approxi\fately an hour.
The subwoofer should be posit\nioned on a fir\f ground.
When setting up your subwoofer, please \fake sure to attach 
the black protective plugs to the subwoofer’s feet in order 
to prevent da\fage of your floor surfacing. For hard floors 
there are also felt pads provided that can be sticked to the 
underside of the protective plugs.
We reco\f\fend that you retain the original packaging, as it is the best  way to 
guarantee safe transportation should the need to do so arise.
Please note that the subwoofer will take so\fe break-in ti\fe to achieve opti\fu\f 
sonic perfor\fance. 
2.2  Quick Start
a)  Before connecting the subwoofer to your audio co\fponents and the power 
source \fake sure that the subwoofer, the loudspeakers and your audio source 
are switched off and set the level controls fully counterclockwise.
\f)  Choose your preferred connection as des\ncribed under 3.
c)  Check if the specified voltage \fatches the voltage of the power supply you use. 
If this is not the case do not conne\nct the loudspeakers to a power source! Please 
contact your local dealer o\nr national distributor. 
If the voltages \fatch, use the included power cables to connect the loudspeaker 
to the \bC sockets.
d)    Switch on the \fain on/off switches on the rear panel of the subwoofer.
e)    Make sure that the line out level (volu\fe) of your stereo is either at a low level or 
all the way off. Then, switch on your audio syste\f.
f)    Turn on your source of \fusic and adju\nst the volu\fe carefully.
2. Quick Start   
						

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Sub8 Manual / English
3.1 
Connections
On the rear side of the speaker you can find balanced (XLR) and unbalanced (RC\b) 
connectors. For professional use the XLR connectors will be the first choice. 
3.2  Input
Connect the left and right line-level signal 
fro\f your signal source (audio interface, \fixer, 
etc.) to the LEFT and RIGHT I\nNPUT jacks. Use 
either XLR (balanced) \nor RC\b (unbalanced) cable\ns. 
3.3  Satellite Out
Connect the LEFT and RIGHT S\n\bTELLITE OUT 
jacks to the inputs of the left and right \fain 
powered speakers or the inputs of the a\fps 
powering the \fain speakers.
3.4  LEDs
There are two LEDs on the front, one on each potentio\feter.
The  left  one  will  blink  a  few  ti\fes  red  when  the  subwoofer  is  being  switched 
on.  This  does  not  indicate  an  overload  but  the  control  function  of  the  protective 
circuit.  Only  if  the  diode  flashes  red  during  operation  this  indicates  an  overload. 
\bfterwards, the diode glows green. 
The right  diode will glow green during operation and yellow during stand-by (Signal 
On \fode, see 5.2).
3. Connecting the Su\fw\coofer   
						

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It is co\f\fon knowledge that low frequencies (below about 100Hz) are non-directional, 
\feaning they can hardly be located by the listener. It is, however, a co\f\fon \fisunder-
standing that therefore the place\fent of a su\nbwoofer does not \fatter. It does \fatter.
Due to the fact that every roo\f (geo\fetry, furniture, etc.) is unique, the following  de-
scriptions intend to  be a first introduction to the subject. The ai\f is to assist you  tack -
ling the \fost co\f\fon proble\fs with subwoofers and roo\f acoustics, notably interfer -
ence and standing waves.
4.1   Distance to satellites
In \fost set ups it is advisable to place the subwoofer not too far fro\f the satellites 
to \fini\fize the chance of  Interferences. Interference \feans the superposition of 
two or \fore waves resulting in an attenuation/cancellatio\nn or enhance\fent of the 
specific frequency/frequencies.
Further\fore, big refelexion faces in close range of the subwoofer should be avoid-
ed if possible.
4.2   Walls/Distance to walls
Generally,  every  wall  in  relative  close  distance  to  the  subwoofer  enhances  its 
sound pressure by about 6 dB. For instance, placing the subwoofer in a corner of 
a roo\f will \fake it about 18 dB louder. It is likely that this will result in an i\fpair -
\fent of the precision of the \fusical reproduction.
\bnother  proble\f  related  to   the  geo\fetrics  of  the  roo\f  concerns  the  so  called 
‘standing  waves’.  These  are  sound  waves  being  reciprocated  between  reflecting 
objects, so they ‘stand’ (don’t see\f to \fove) in between these objects. The speak -
er continues to produce  new waves  that co\fbines its force with the first wave(s): a 
vicious circle that results in local i\fb\nalances of the particular frequencies.
4.3   Finding the optimum \cposition
Give  it  a  try!  The  \fost  i\fportant  tool  for  finding  the  best  position  for  your  sub-
woofer are your ears. There are two rather easy ways:
You  can  deter\fine  your  listening  spot  first  and  then  co\fpare  the  sound  of  the 
subwoofer at different positions.
\bnother option is to place the subwoofer at the listening position and then \fove 
around. Whereever the sound is the best the subwoofer should be posit\nioned.
4. Su\fwoofer Placement   
						

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Sub8 Manual / English
On the front side you will find two potentio\feters, one for the volu\fe and 
one  for  the  crossover  frequency.  Both  the  volu\fe  and  the  frequency  can 
also be controlled by the re\fote control. On the rear side, there are \fore 
controls (satellite filter, phase switch, \fode). The following tips are intended 
to assist you at using the controls in the best \fanner.
5.1 
Controls on the front panel and Remote control
a)  Volume
Input  Sensitivity  control  fro\f  -60  dB  to  +6  dB  relative 
to  775  \fV  when  used  via  the  sy\f\fetrical  XLR  input 
or  relative  to  250  \fV  when  used  via  the  asy\f\fetrical 
Cinch (RC\b) input.
\f)  Frequency
The upper frequency li\fit of the unit is variable and can 
be  set  to  any  value  between  50  and  150Hz.  The  85Hz 
\farker indicates the reco\f\fendation of Dolby® labs for 
surround sound settings.\n In \fany cases, a slightly lower 
crossover  frequency  delivers  tighter  bass  response,  for 
typical  near-\fidfield  \fonitors  we  reco\f\fend   70  to 
75Hz  as  upper  li\fit  (i.e.  -3  dB  point  in  the  frequency 
response).
Please  note:  If  you  alter  the  frequency   it  is  a\fvisable  to 
check  if  an  alteration  of  the  \bhase  im\broves  the  soun\f 
quality.
5. Controls
FREQ
VOLUME+
+   
						

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5.2 Controls on the rear panel
a)  Mode
This push button allows you to choose between
•  Signal  On\f  woofer  starts  operation  as  soon  as  a  \fusical 
signal arrives, and stops after 15 \finutes without a signal.
•  Continuous\f the unit is per\fanently working. 
We  reco\f\fend  the  ”Signal  on”  position.  It  \fini\fises 
power consu\fption and \fakes handling very easy. 
\f)  Su\fwoofer Phase
With  the  Phase  Switch  you  can  alter  the  phase  of  the 
subwoofer relative to the satellites. That \feans to change 
the  polarity  of  the  bass  unit.  Depending  on  the  distance 
between  woofer  and  satellites,  either  0°  or  180°  \fay 
be  the  better  position.  We  reco\f\fend  to  try  out  what 
position sounds bet\nter within your syste\f.
c)  Satellite Filter
The satellites in a syste\f can be driven full range or with a 
85 Hz high pass as reco\f\fended by Dolby® laboratories 
for use in surround set-ups. Reco\f\fendation: If pos\nsible 
the  \fain  signal  should  go  into  the  Subwoofer.  Connect 
your  satellites  to  the  Subwoofer  output,  either  via  XLR 
sy\f\fetrical or RC\b asy\f\fetrical. In \fany cases, clarity 
and  dyna\fic  range  of  the  speakers  can  be  i\fproved  if  
they do not reproduce very low frequencies since they do 
not have to deliver big a\fplitudes. 
5. Controls