Adam Sub8 User Manual [de]
Sub8
Operation Manual / Bedienungsanleitung
English / Deutsch
Sub8
Safety Instructions
Please read the following safety instructions before setting up your system.
Keep the instructions for subsequent reference. Please heed the warnings and
follow the instructions.
Caution
Risk of electrical shock
Do 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.
Caution: To reduce the risk of electric shock, do not open the subwoofer.
There are no user-serviceable parts inside. Refer servicing to qualified
service personnel.
This product, as well as all attached extension cords, must be terminated with
an earth ground three-conductor AC mains power cord like the one supplied
with the product. To prevent shock hazard, all three components must always
be used.
Never replace any fuse with a value or type other than those specified. Never
bypass any fuse.
Always switch off your entire system before connecting or disconnecting any
cables, or when cleaning any components.
Do not place this unit on an unstable cart, stand or tripod, bracket or table. The
unit may fall, causing serious injury and/or serious damage. When cart is used,
use caution when moving the cart/apparatus combination.
Do not expose this product to rain or moisture, never wet the inside with any
liquid and never pour or spill liquids directly onto this unit. Please do not put
any objects filled with liquids (e.g. vases, etc.) onto the speaker.
Check if the specified voltage matches the voltage of the power supply you
use. If this is not the case do not connect the loudspeakers to a power source!
Please contact your local dealer or national distributor.
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Safety Instructions
Protect the cord from being walked on or pinched.
Always use fully checked cables. Defective cables can harm your speakers. They
are a common source for any kind of noise, hum, crackling etc.
Always keep electrical equipment out of the reach of children.
Always unplug sensitive electronic equipment during lightning storms.
The Subwoofer should be installed near the socket outlet and disconnection of
the device should be easily accessible.
To completely disconnect from AC mains, disconnect the power supply from
the AC receptacle. Never use flammable or combustible chemicals for cleaning
audio components.
Avoid touching the speaker membranes and do not block the woofer’s
ventilation ports.
Never expose this product to extremely high or low temperatures. Never
operate this product in an explosive atmosphere.
High SPL’s may damage your hearing! Please do not get close to the
loudspeakers when using them at high volumes.
Please note that the diaphragms build up a magnetic field. Do not ply with
magnetic items at close range to the diaphragms.
Assure free airflow behind the speakers to maintain sufficient cooling.
Sub8 Manual / English
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Table of contents
Safety Instructions .............................................2-3
1. Introduction .......................................................5
2. Quick Start ........................................................6
2.1 Important Information .......................................6
2.2 Quick Start ........................................................6
3. Connecting the Subwoofer ................................7
3.1 Connections ......................................................7
3.2 Input ..................................................................7
3.3 Satellite Out .......................................................7
3.4 LEDs ..................................................................7
4. Subwoofer Placement ........................................8
4.1 Distance to satellites .........................................8
4.2 Walls/Distance to walls .....................................8
4.3 Finding the optimum position ............................8
5. Controls .............................................................9-10
5.1 Controls on front panel and Remote Control ..... 9
5.2 Controls on rear panel .......................................10
6. Trouble Shooting ................................................11
6.1 No or distorted signal ........................................11
6.2 Parasitic noises .................................................11
7. Maintenance ......................................................12
8. Shipping / Packaging ........................................12
9. Environmental Information ................................12
10. EU Declaration of Conformity ............................13
11 . Limited Warranty ...............................................14
11 . 1 Terms and Conditions ........................................14
11 . 2 How to claim ......................................................14
12. Technical Data ...................................................15
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1. Introduction
Dear customer,
Thank you for choosing an ADAM Audio Sub8 subwoofer.
ADAM subwoofers are built for maximum 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 meets highest expectations in sound quality and
craftsmanship.
The Sub8 is a compact active subwoofer. It is perfectly suited for a wide variety of
stereo and multi-channel applications including small control rooms, desktops, mobile
facilities and post-production edit bays … in other words, in any situation where a
combination of no-compromise sound reproduction and a small footprint is required.
This manual is intended to provide you with information about your new ADAM 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 problems.
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 information concerning ADAM’s technologies and products, complete
reviews, and a list of worldwide ADAM 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 miss out on the latest info on ADAM Professional Audio,
come and follow us on Twitter!
We hope very much that you really enjoy your new subwoofer and wish you many
delightful hours with it.
The ADAM Audio Team
Sub8 Manual / English
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2. Quick Start
2.1 Important Information for set up
After having unpacked your subwoofer, please allow the system to acclimate to
the temperature of the room for approximately an hour.
The subwoofer should be positioned on a firm ground.
When setting up your subwoofer, please make sure to attach
the black protective plugs to the subwoofer’s feet in order
to prevent damage 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 recommend 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 some break-in time to achieve optimum
sonic performance.
2.2 Quick Start
a) Before connecting the subwoofer to your audio components and the power
source make sure that the subwoofer, the loudspeakers and your audio source
are switched off and set the level controls fully counterclockwise.
b) Choose your preferred connection as described under 3.
c) Check if the specified voltage matches the voltage of the power supply you use.
If this is not the case do not connect the loudspeakers to a power source! Please
contact your local dealer or national distributor.
If the voltages match, use the included power cables to connect the loudspeaker
to the AC sockets.
d) Switch on the main on/off switches on the rear panel of the subwoofer.
e) Make sure that the line out level (volume) of your stereo is either at a low level or
all the way off. Then, switch on your audio system.
f) Turn on your source of music and adjust the volume carefully.
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3. Connecting the Subwoofer
3.1 Connections
On the rear side of the speaker you can find balanced (XLR) and unbalanced (RCA)
connectors. For professional use the XLR connectors will be the first choice.
3.2 Input
Connect the left and right line-level signal
from your signal source (audio interface, mixer,
etc.) to the LEFT and RIGHT INPUT jacks. Use
either XLR (balanced) or RCA (unbalanced) cables.
3.3 Satellite Out
Connect the LEFT and RIGHT SATELLITE OUT
jacks to the inputs of the left and right main
powered speakers or the inputs of the amps
powering the main speakers.
3.4 LEDs
There are two LEDs on the front, one on each potentiometer.
The left one will blink a few times 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.
Afterwards, the diode glows green.
The right diode will glow green during operation and yellow during stand-by (Signal
On mode, see 5.2).
Sub8 Manual / English
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4. Subwoofer Placement
It is common knowledge that low frequencies (below about 100Hz) are non-directional,
meaning they can hardly be located by the listener. It is, however, a common misunderstanding that therefore the placement of a subwoofer does not matter. It does matter.
Due to the fact that every room (geometry, furniture, etc.) is unique, the following descriptions intend to be a first introduction to the subject. The aim is to assist you tackling the most common problems with subwoofers and room acoustics, notably interference and standing waves.
4.1 Distance to satellites
In most set ups it is advisable to place the subwoofer not too far from the satellites
to minimize the chance of Interferences. Interference means the superposition of
two or more waves resulting in an attenuation/cancellation or enhancement of the
specific frequency/frequencies.
Furthermore, big refelexion faces in close range of the subwoofer should be avoided 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 room will make it about 18 dB louder. It is likely that this will result in an impairment of the precision of the musical reproduction.
Another problem related to the geometrics of the room concerns the so called
‘standing waves’. These are sound waves being reciprocated between reflecting
objects, so they ‘stand’ (don’t seem to move) in between these objects. The speaker continues to produce new waves that combines its force with the first wave(s): a
vicious circle that results in local imbalances of the particular frequencies.
4.3 Finding the optimum position
Give it a try! The most important tool for finding the best position for your subwoofer are your ears. There are two rather easy ways:
You can determine your listening spot first and then compare the sound of the
subwoofer at different positions.
Another option is to place the subwoofer at the listening position and then move
around. Whereever the sound is the best the subwoofer should be positioned.
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5. Controls
On the front side you will find two potentiometers, one for the volume and
one for the crossover frequency. Both the volume and the frequency can
also be controlled by the remote control. On the rear side, there are more
controls (satellite filter, phase switch, mode). The following tips are intended
to assist you at using the controls in the best manner.
5.1 Controls on the front panel and Remote control
a) Volume
Input Sensitivity control from -60 dB to +6 dB relative
to 775 mV when used via the symmetrical XLR input
or relative to 250 mV when used via the asymmetrical
Cinch (RCA) input.
b) Frequency
The upper frequency limit of the unit is variable and can
be set to any value between 50 and 150Hz. The 85Hz
marker indicates the recommendation of Dolby® labs for
surround sound settings. In many cases, a slightly lower
crossover frequency delivers tighter bass response, for
typical near-midfield monitors we recommend 70 to
75Hz as upper limit (i.e. -3 dB point in the frequency
response).
+
FREQ
+
VOLUME
Please note: If you alter the frequency it is advisable to
check if an alteration of the phase improves the sound
quality.
Sub8 Manual / English
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5. Controls
5.2 Controls on the rear panel
a) Mode
This push button allows you to choose between
• Signal On: woofer starts operation as soon as a musical
signal arrives, and stops after 15 minutes without a signal.
• Continuous: the unit is permanently working.
We recommend the ”Signal on” position. It minimises
power consumption and makes handling very easy.
b) Subwoofer Phase
With the Phase Switch you can alter the phase of the
subwoofer relative to the satellites. That means to change
the polarity of the bass unit. Depending on the distance
between woofer and satellites, either 0° or 180° may
be the better position. We recommend to try out what
position sounds better within your system.
c) Satellite Filter
The satellites in a system can be driven full range or with a
85 Hz high pass as recommended by Dolby® laboratories
for use in surround set-ups. Recommendation: If possible
the main signal should go into the Subwoofer. Connect
your satellites to the Subwoofer output, either via XLR
symmetrical or RCA asymmetrical. In many cases, clarity
and dynamic range of the speakers can be improved if
they do not reproduce very low frequencies since they do
not have to deliver big amplitudes.
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