Adam Tensor Epsilon Manuale utente
Tensor
Epsilon
Semi-active Version
Operation Manual / Bedienungsanleitung
English / deutsch
2
Please read the following safety instructions before setting up your system.
Keep the instructions for further reference. Please heed the warnings and
follow the instructions.
Caution: To reduce the risk of electric shock, do not open the
loudspeaker. 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.
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.
Safety Instructions
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Tensor Epsilon (Semi-active Version) Manual / english
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 monitor 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.
Safety Instructions
4
Table of contents
Safety Instructions .............................................2-3
1. Introduction .......................................................5
2. Quick Start ........................................................6
2.1 Important Information .......................................6
2.2 Connecting the speakers ...................................6
3. Speaker Placement ............................................7-8
3.1 Room acoustics .................................................7
3.2 General recommendations ................................7
3.3 Tweeter at height of ears ...................................8
3.4 The stereo triangle .............................................8
3.5 Surround placement ..........................................8
4. Speaker Adjustment ..........................................9-10
4.1 LED ....................................................................9
4.2 Controls .............................................................9
4.3 Mode .................................................................9
4.4 Impedance linearization .....................................10
4.5 Tweeter level ......................................................10
4.6 Bass Gain and Room EQ ....................................10
5. Troubleshooting .................................................11
5.1 No or distorted signal ........................................11
5.2 Parasitic noises .................................................11
6. Maintenance ......................................................12
7. Shipping / Packaging ........................................12
8. Environmental Information ................................12
9. EU Declaration of Conformity ............................13
10. Limited Warranty ...............................................14
10.1 Terms and Conditions ........................................14
10.2 How to claim ......................................................14
11 . Technical Data ...................................................15
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Tensor Epsilon (Semi-active Version) Manual / english
1. Introduction
Dear customer,
Thank you for choosing the ADAM Audio Tensor Epsilon loudspeaker.
ADAM loudspeakers are built for maximum quality reproduction and audio perfection.
With the Tensor Epsilon you have selected one of the most ambitious compact loudspeaker
systems available. It combines many of the groundbreaking ADAM innovations in the
areas of amplifier and transducer technologies while furthermore distinguishing itself
by utilizing only the finest materials and the most fastidious workmanship. With the
TENSOR series, ADAM brings loudspeakers into your home that give you access to the
sonic authenticity of the most sought after professional studio monitors.
This version of the Tensor Epsilon is a two-way ported semi-active system that uses
the new X-ART tweeter, ensuring full compatibility with the latest expanded high
frequency resolution media formats, and one HexaCone©-bass/midrange driver. The
cone driver uses a PWM amp with continuous output of up to 200 Watts (RMS).
This manual is intended to provide you with information about your new ADAMs. 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 loudspeakers, and wish you many
delightful hours with them.
The ADAM Audio Team
6
2.1 Important Information for set up
After having unpacked your loudspeaker, please allow the system to acclimate to
the temperature of the room for approximately an hour.
We recommend using high quality cables to guarantee optimal performance.
It is important to ensure the speakers sit firmly on a solid surface!
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 loudspeakers will take some break-in time to achieve
optimum sonic performance.
2.2 Connecting the speakers
a) Before connecting the loudspeakers to your audio components and the power
source make sure that both the loudspeakers and your audio source are switched
off and set the level controls fully counterclockwise.
b) Connect the speaker terminal with your audio source
(i.e. stereo/multichannel amplifier, A/V receiver etc.)
by using speaker wires with stripped bare ends or
banana plugs.
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 back panel of the loudspeakers.
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.
2. Quick Start
7
Tensor Epsilon (Semi-active Version) Manual / english
The proper positioning of your loudspeakers is of extreme importance to the sound
quality. We would therefore like to give you some advice concerning room acoustics
and the setting up of your loudspeakers. Since every room is unique, we can only offer
general recommendations.
3.1 Room acoustics
Room acoustics come down to essentially three aspects:
a) Reverberation: The ‘sound’ of a room is to some extend a result of its reverbera-
tion, i.e. to how the sound waves are reflected. Soft furniture (like carpets, cur-
tains, or sofas) tends to absorb sound waves, especially higher frequencies. Hard
materials like stone or glass reflect sound waves almost entirely. In general, rever-
berant rooms are rather unforgiving in terms of authentic music reproduction due
to the great number of reflections.
b) The room dimensions: The volume of a room is the second important aspect of its
acoustics. The same loudspeaker will sound different in different sized rooms with
similar sonic characteristics. Therefore, the size of your room partly determines
the positioning of your loudspeakers.
c) The listening distance: The distance between the listener and the sound source
is the third crucial aspect in loudspeaker positioning. If this distance is either too
great or too small, the sound will be compromised.
3.2 General recommendations
Please make sure that there are no obstacles in the way from the monitor to your
ears. You should be able to see the speakers completely.
The distance to the surrounding walls should be at least 40 cm to avoid early
reflections, which will degrade the sound.
The loudspeakers should be aligned with the listener’s position.
Please note that vibrating parts of nearby objects can mask the sound.
3. Speaker Placement
8
3.3 Tweeter at the height of ears
The Tweeter should be positioned approximately at the
height of your ears. If the speaker does not point right
in your direction, you might lose sound
information.
In case you need to position the speaker in a significant
lower or higher position, the monitor should be angled
accordingly.
3.4 The Stereo Triangle
If the loudspeaker is going to be used for stereo ap-
plications, the optimum listening position should be at
the top of an imaginary equilateral triangle with the two
loudspeakers should be placed at the other two points
of this triangle.
The loudspeakers should be aligned with the listener’s
position.
3.5 Surround Placement
Speaker positioning for multi-channel stereo purposes
is ideally based on a circle with speakers placed at 0°
(Center), 30° (Front Right), 110° (Rear Right), 250°
(Rear Left), 330° (Front Left), with the listener being
the circle’s center (Radius between 0.7-2.0 m). This ITU
recommended configuration may vary depending on the
purpose of the control room (music or film). However,
it is recommended to create a symmetrical listening
position with the front side and surround speaker
pointing to the listener’s ear.
The distance to the surrounding walls should be at least
40 cm to avoid early reflections, which can degrade the
sound.
3. Speaker Placement
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Tensor Epsilon (Semi-active Version) Manual / english
4.1 LED
On the bottom of the tweeter you find an
LED. It indicates Power on and, in case of
an overload, the function of the protective
circuit.
Please note: When the speaker is switched
on, the LED will flash red a few times. This
does not indicate an overload.
• The LED starts to glow green during normal operation (the power switch is
located on the rear side of the speaker).
• In case of an overload, the OL LED will flash red. The protective circuit will safe
your speaker from damage.
4.2 Controls
On the rear side you will find controls that
allow detailed fine-tuning of your loudspeakers
to your particular room acoustics and per-
sonal listening preferences. The following
tips are intended to assist you at using the
controls in the best manner.
Please note that using the controls may
have a great impact on the overall sound
characteristics of your loudspeakers. We
recommend using the controls with utmost
care and only after several audio tests with
familiar recordings.
4.3 Mode
This 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.
4. Speaker Adjustment
LED
10
4.4 Impedance linearization (for tube amplifiers)
The semi-active Tensor Epsilon was designed
for you to be able to use your own amplifier at
bass-midrange, midrange and high frequencies.
Usually, this will be a transistor amplifier that
does not have any problems with the vacillating
impedance characteristics due to its low internal
resistance.
With the output of a tube amplifier however, the situation is different.
The sound quality can be improved if the amp gets an impedance of
4 Ω or 8 Ω that stays the same at all frequencies. That is why the
semi-active Tensors feature built-in impedance linearization that can
be patched into the signal path.
4.5 Tweeter Level
In addition, the ‘Tweeter Level’ allows to either raise
or lower the high frequency level by 1,5 dB. Just insert
the short circuit plug in the accordant position: -1,5
dB to lower and +1,5 dB to raise the high frequency
level.
4.6 Bass Gain and Room EQ
The other two controls alter the bass frequencies:
• The ‘Bass Gain ‘ raises or lowers the overall bass
level up to +/-10 dB.
• The ‘Room EQ’ is a shelving filter and works differently: from a certain
point (below 150 Hz in this case) the frequencies are gradually being
changed (see figure).
4. Speaker Adjustment
Room EQ <150 Hz for low frequencies
below 150 Hz
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