Systemline S7 User manual

NetPower Amplifier
Systemline 7 Stereo Power Amplifiier
Instruction manual
SN6100

Important safety instructions
1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this apparatus near water.
6. Clean only with dry cloth.
7. Do not block any ventilation openings. Install in accordance with the manufacturer’s
instructions.
8. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus
(including ampliers) that produce heat.
9. Do not defeat the safety purpose of the polarised or grounding-type plug. A polarised plug
has two blades with one wider than the other. A grounding type plug has two blades and a third
grounding prong. The wide blade or the third prong are provided for your safety. If the provided
plug does not t into your outlet, consult an electrician for replacement of the obsolete outlet.
10. Protect the power cord from being walked on or pinched particularly at plugs, convenience
receptacles, and the point where they exit from the apparatus.
11. Only use attachments/accessories specied by the manufacturer
12. Use only with the cart, stand, tripod, bracket or table specied by the manufacturer, or
sold with the apparatus. When a cart is used, use caution when moving the cart/apparatus
combination to avoid injury from tip-over.
13. Unplug this apparatus during lightning storms or when unused for long periods of time.
14. Refer all servicing to qualied service personnel. Servicing is required when the apparatus has
been damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled
or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture,
does not operate normally or has been dropped.
WARNINGS
To reduce the risk of re or electric shock, do not expose this apparatus to rain or moisture.
This apparatus shall not be exposed to dripping or splashing and no objects lled with liquids,
such as vases, shall be placed on the apparatus.
Apparatus with CLASS1 construction shall be connected to a MAINS socket outlet with a
protective earthing connection.

Instructions de sécurité importantes
1. Veuillez lire ces instructions.
2. Veuillez conserver ces instructions.
3. Veuillez prendre connaissance de tous les avertissements.
4. Veuillez suivre toutes les instructions.
5. N’utilisez pas cet appareil a proximite de l’eau.
6. Nettoyez uniquement avec un chion sec.
7. N’obstruez pas les grilles de ventilation. Suivez attentivement les instructions du fabricant lors
de l’installation.
8. N’installez pas cet appareil a proximite d’une source de chaleur telle que des radiateurs, des
bouches d’air chaud, des fours, ou tout autre appareil (y compris des amplicateurs) produisant
de la chaleur.
9. Ne supprimez pas la securite apportee par la prise polarisee ou de type B. Une prise polarisee
possede deux broches, dont une plus large que l’autre. Une prise de type B possede deux broches
et une che terre. La broche la plus large ou la che terre sont la pour votre securite. Si la prise
fournie ne convient pas, adressez-vous a un electricien pour une mise aux normes de votre
installation electrique.
10. Evitez de marcher sur le cordon d’alimentation ou de le pincer, en particulier, a l’extremite du
cordon, de la prise et a la sortie de l’appareil.
11. Utilisez uniquement des accessoires species par le fabricant.
12. Utilisez uniquement les chariots, pieds, tripodes, supports ou les tables recommandes par
le fabricant ou vendus avec l’appareil. Si vous utilisez un chariot, faites tres attention lors du
transport de l’appareil et evitez de le faire tomber pour ne pas vous blesser.
13. Debranchez cet appareil en cas d’orage ou lorsque vous ne vous en servez pas pendant une
periode prolongee.
14. Pour toute reparation, adressez-vous a un professionnel. Faites reparer cet appareil pour des
dommages de n’importe quelle nature : cordon d’alimentation abime, liquide ou objet introduit
dans l’appareil, exposition a la pluie ou a l’humidite, fonctionnement inhabituel, chutes diverses.
AVERTISSEMENT
An de diminuer les risques d’incendie ou de choc electrique, conservez cet appareil a l’abri de la
pluie et de l’humidite.
Evitez toute eclaboussure et ne posez pas d’objets contenant des liquides, comme des vases, sur
cet appareil.
L’appareil de construction de CLASS1 doit être connecté à une prise secteur dotée d’une
protection par mise à la terre.

Contents
1.0 NetPower pack contents 5
2.0 Introduction 5
3.0 Installing And Operating NetPower 6
3.1 Wall Mounting 7
3.2 Rear Panel 8
3.3 Front Panel 10
4.0 Specications 11
Power 11
Audio 11
DC Trigger 11
Auto switch on 11
General 11

5
1.0 NetPower pack contents
1.1 NetPower x 1
1.2 Bridged mode link x 1
1.3 Mounting brackets x 2
1.4 Mains cable x 1
1.5 Operating manual x 1
2.0 Introduction
The NetPower is a stereo audio power amplier for use in installed audio systems. It has line level
inputs, directly connected line outputs, and can drive one or two pairs of loudspeakers with a
combined impedance down to 4Ω.
On the rear panel there is a screwdriver-adjustable gain control. There is also a mode switch which
allows the user to select the method of standby switching – using an opto-isolated DC trigger
input, or audio signal sensing. There is also a conventional standby switch on the front panel.

6
3.0 Installing And Operating NetPower
3.1 Wall Mounting
1. Remove two screws from the underside of the NetPower. Both screws must be from the same
side of the unit.
2. Align the bracket as shown and secure to the unit using the two screws removed previously.
3. Remove the two screws from the other side of the NetPower.

7
4. Align the second bracket as shown and secure using the two screws removed previously.
5. Mount NetPower onto a wall using suitable xings* for your installation.
*Wall xings not supplied

75
10 2 19
36 4
8
9
8
3.2 Rear Panel
1. Power Inlet
Before making any connection, check that the mains voltage setting printed on the rear panel
is the same as your local mains supply. Plug the female (socket) end of the power cord into the
power inlet on the rear of the amplier. Plug the male (plug) end of the cord into a “live” wall
socket or a suitable extension cable.
2. Power Switch
Do not switch the power ON until all rear panel connections have been made and the
operating mode selected (see below). When the power switch is in the OFF position all power is
disconnected from the amplier. When the power switch is in the ON position, the amplier will
power up in standby mode.
3. Mode Switch
The mode switch sets up the means by which the NetPower may be switched into or out of
standby.
Music Sense Mode
When MUSIC SENSE mode is selected the NetPower will switch automatically out of standby when
an audio signal is present at the Line Input. If there is no audio signal for a continuous period of 20
minutes, the NetPower will automatically switch back into standby.
Alternatively the NetPower may be switched into or out of standby manually using the front panel
Standby button.

9
12V Trigger Mode
When 12V TRIGGER mode is selected the NetPower may be switched into or out of standby using
a suitable DC source connected to the 12V trigger input.
Unit in Standby Unit Operational
DC voltage applied to
DC TRIG jack Unit switches out of standby No change
DC voltage removed
from DC TRIG jack No change Unit switches into standby
Alternatively the NetPower may be switched into or out of standby manually using the front panel
Standby button.
4. 12V trigger Input
Connect the 12V Trigger Input to a DC trigger source (minimum 5V) using a 3.5mm mono jack
cable. Connect “+” to the jack tip, and“-“ to the sleeve.
5. 12V Trigger Output
The 12V Trigger Output is connected directly to the Input so that multiple ampliers can be
controlled from a single source.
6. Gain
This control adjusts the gain the NetPower. When set to maximum (fully clockwise) the voltage
gain is 29dB (740mV for full power of 55W into 8 ohms). The control range is 20dB.
7. Line Input
Connect audio input cables to these RCA (phono) sockets.
8. Line Output
The Line Out RCA (phono) sockets are connected directly to their respective Line In sockets. This
allows for multiple power ampliers to be driven from a single source. Please take note of the
increased loading this will present to the source signal.
9. Loudspeaker Outputs
There are two pairs of speaker terminals for each channel allowing two pairs of speakers to be
connected with ease. Ensure that in each case the red terminal is connected to the red or“+”
terminal on the loudspeaker and the black terminal to the black or “-“ terminal.
Note: Never make any direct connection between any LEFT terminal and any RIGHT terminal.
The NetPower amplier can drive impedances down to 4Ω i.e. one pair of 4Ω loudspeakers or two pairs
of 8Ω loudspeakers. Note: This rule does not apply in bridge mode.
10. Bridged (Mono) Mode
To operate in Bridged (Mono) Mode, insert the Bridged Mode link into the Line Out sockets, so
that it links left and right channels. Note: as the line outputs are directly connected to the line
inputs, this means that the left and right line inputs are also now connected together.
A single loudspeaker should now be connected between the LEFT “+” and RIGHT “-“ terminals, as
indicated by the diagonal line.
Note: When in bridge mode, then netpower amplier can only drive a single 8Ω loudspeaker.

1
2
10
A mono signal source should be connected to either the left or right Line In socket.
Alternatively a stereo source may be used if it is designed so that its left and right outputs may
safely be shorted together (“mono-ed”). The Systemline NetAmp’s line output is designed so that
it may be connected in this way.
3.3 Front Panel
1. Standby button
When the amplier is plugged into a live wall socket and the power switch on the rear is turned
ON, it will power up in standby mode and the LED by the Standby button will glow red. In this
condition the internal circuitry is powered up but disabled, so it consumes very little power
(<0.5W).
2. StandbyLED
When the NetPower is switched out of standby, by whatever means (see page 3), the Standby
LED will ash blue for a brief period while the amplier settles, followed by continuous blue. The
NetPower is now ready for use.

11
4.0 Specications
Power
Continuous output
4Ω100 W
8Ω55 W
8Ωbridged 200 W
Standby consumption <0.5W
Mains voltage Set by an internal link 115 or 230V
Audio
THD At 80% rated power, 8Ω20Hz-20kHz <0.07%
Signal / Noise ratio A weighted ref 55W/8Ω>113dB
Input sensitivity At max gain,ref 55W into 8Ω740mV
Gain control range 9dB - 29dB
Input Impedance 18KΩ//220pF
Frequency response 20Hz-20kHz (+/-) 0.5dB
60kHz (-)3dB
DC Trigger
Input sensitivity <5V
Input resistance 10 kΩ
Auto switch on
Sensitivity Mono source, L=R 3mV
General
Dimensions Height: 86.5mm, Width: 219mm, Depth:170.5mm
Net Weight 2.12kg

Stortford Hall Industrial Park
Dunmow Road
Bishops Stortford
Hertfordshire
CM23 5GZ
United Kingdom
www.armourhome.co.uk
©2014 Armour Home Electrioncs, All rights reserved.
Our policy is one of continuous product improvement. We reserve
the right to change the design and specications without notice.
All information is given in good faith. The manufacturer accepts
no responsibility for errors, omissions or incorrect assumptions.Q15491-IS_r3 ZINS142