Adams Amplifier Sub7 User Manual

							Sub7
Operation Manual / BedienungsanleitungEnglish / Deutsch 
						

							2
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   
						

							3
Sub7 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   
						

							4
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   
						

							5
Sub7 Manual / English
1. Introduction
Dear custo\fer,
Thank you for choosing an \bD\bM \budio Sub7 subwoofer.
\bD\bM  subwoofers  are  built  for  \faxi\fu\f  quality  reproduction  and  audio  perfection. 
With  the  Sub7  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  Sub7  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   
						

							6
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.
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   
						

							7
Sub7 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.  However,  as  RC\b  connections  are  widely  used  in  ho\fe  entertain\fent 
environ\fents we have included an RC\b jack as well. 
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.
Both  LEDs  will  glow  green  during  operation  and 
yellow during stand-by (\buto On \fode, see 5.2)\n.
3. Connecting the Su\fw\coofer   
						

							8
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   
						

							9
Sub7 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.  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 i\nn the frequency response).
Please note: If \fou alter the frequenc\f  it is advisa\ble 
to  check  if  an  alteration  of  the  phase  improves  the 
sound qualit\f.
5. Controls
FREQ
VOLUME+
+   
						

							10
5.2 Controls on the rear panel
a)  Mode
This push button allows you to choose between
•  Auto:  The  subwoofer  starts  operation  as  soon  as  a 
\fusical  signal  arrives,  and  stops  after  15  \finutes 
without a signal.
•  On: The unit is per\fanently working. 
We  reco\f\fend  the  ”\buto”  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  better  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  possible  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. 
d)  Foot Switch
This input jack allows for switching the subwoofer on or off by 
footswitch. When you have connected the Input and Output of the 
subwoofer with the sa\fe type of conne\nctors (either both XLR or both 
RC\b) the footswitch will also switch off the Satellite Filter, enabling the 
satellite speakers to play full range. 
5. Controls