SCHNERZINGER MULTI GUARD User manual

MULTI GUARD
MULTI GUARD 2021-03 V1 en
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Package Contents
MULTI GUARD Set (4, 6 or 8 units)
MULTI GUARD MASTER
12V power supply, cable length 1,5 m
3,5 mm jack extension cable 5m
4, 6 or 8 MULTI GUARD unit of the variants
PHASE, EARTH and ROOM (at buyer‘s option)
Antenna (per unit + master)
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Dear customer,
Thank you for your purchase of a SCHNERZINGER product.
Please take the time to precisely read the information in this guide. You
will find important instructions to use your product and hints for the
optimal integration into your Hi-Fi system.
This guide facilitates your use of the product, promotes understanding
its functional characteristics and helps you to obtain the full efficiency
of the product.
We hope you enjoy your new SCHNERZINGER product.
Please clean the product with a non-scratching dry duster only. Avoid
using cleaning agents.
A potting compound in the devices protects the innovative GIGA
CANCELLING technology with its particular electrical components
specially manufactured for SCHNERZINGER against direct access and
screening via X-ray or magnetic field applications. A slight rustling
caused by this potting compound is normal and does not result in any
functional impairment. There are no informed crystals in the devices.
In case of malfunctions contact your SCHNERZINGER dealer. Please do
not attempt to service the device yourself or to open it, in that case you
will lose your entitlement for our manufacturer warranty.
In the case of damages at the power plug or power cable please initiate
an exchange at SCHNERZINGER via your dealer.
Contents
PROTECTOR SYSTEM
MULTI GUARD
Use of MULTI GUARD
Setting up the MULTI GUARD
Lasting effect of the MULTI GUARD
Dimensions and weight (l x w x h in cm, weight in kg)
MULTI GUARD MASTER 7 x 7 x 3.5 (without antenna), 0.3
MULTI GUARD units each 14 x 5 x 5 (without antenna), 0.25
Antennas are 11 cm long.

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MULTI GUARD
The GIGA CANCELLING technology of the GRID PROTECTOR and the MULTI GUARDs clears up electrical interfering fields,
resulting from the domestic power grid, radiating into the direct environment. The MULTI GUARDs complement and expand
the performance of the GRID PROTECTOR, which takes on the control and coupling function.
Due to GIGA CANCELLING technology GRID PROTECTOR and MULTI GUARD can do without problematic filters and passive
components like capacitors, which are responsible for loss of dynamics, resolution and naturalness; especially at high power
requirements of the power grid.
Application of multiple MULTI GUARDs offers a flexible modular assignment at critical points of the domestic power grid, e. g.
at the different current phases, the protective conductors or in the immediate vicinity of significant interfering sources
(computer, router, etc.). Distributed in the room, they form a comprehensive ROOM SHIELD thanks to their coupling function.
The operating principle and efficiency of the GRID PROTECTOR / MULTI GUARD system are unique and raise the potential of
the entire music system to a completely new level.
PROTECTOR SYSTEM
The music reproduction quality of an audio system is highly affected by low and high frequency electrical interfering fields,
caused by Wi-Fi, cellular radio, power lines etc. With the PROTECTORS and their integrated trendsetting GIGA CANCELLING
technology, SCHNERZINGER has developed a product category that actively eliminates the sonic effects of low and high
frequency interfering fields.
The PROTECTORS significantly enhance the transmission quality of audio systems. The sonic effects include an astonishingly
higher spatial depth and resolution as well as increased broad and fine dynamics in music reproduction.
Utilizing the operating principle and efficiency of the GIGA CANCELLING technology, the SCHNERZINGER PROTECTORS
represent a unique solution in the market.
An important health aspect: protector technology does not increase radiation exposure within the room.

Use of MULTI GUARD
The use of the GRID PROTECTOR is an indispensable prerequisite for the use of the MULTI GUARD. It takes on the control and
coupling function for all MULTI GUARDs. The GRID PROTECTOR is an extreme powerful central unit and is recommended to
connect to the first slot in the Hi-Fi system power distributor, but may also achieve its best results at another socket, at
different phase or even in another room. In connection with MULTI GUARD, the GRID PROTECTOR always achieves the best
results at the first slot in the Hi-Fi system power distributor. If this is not feasible, select a socket of the same circuit or at least
the same phase.
MULTI GUARDs must be operated with their
associated MASTER. Preferably the MASTER
should have an elevated central position
within the listening room. The MULTI GUARDs
unfolds their effect in their close environment
and thus enable a flexible modular use at
other critical points of the domestic power
grid.
MULTI GUARDs can be connected to free
sockets or power distributers. When
connecting to a power distributor, the first
slot should be used.
Several MULTI GUARDs, appropriately
distributed in the room, can be coupled to
form a comprehensive ROOM SHIELD.
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ROOM SHIELD

A common successful approach is to comprehensively clear up the domestic power grid by using the GRID and several MULTI
GUARDs. MULTI GUARDs of the PHASE variant are used to clear up the individual phases of the current conductors and MULTI
GUARDs of the EARTH variant to clear up the protective conductor. MULTI GUARDs of the ROOM variant are used to clear up
the electrical interfering fields that radiate into the room through the power cables installed in the walls and floors of the
listening room.
To do this, it is helpful to know which phases the sockets in the listening room are running on, especially the Hi-Fi power strip,
but also other sockets in the house. Your electrician can tell you this after a look in your fuse box. Alternatively, you can switch
off the individual pre-fuses of the phases one after the other and thus determine at each socket which phase it belongs to.
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Use of MULTI GUARD

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Use of MULTI GUARD
The table shows the performance spectrum of the individual MULTI GUARD variants.

Setting up the MULTI GUARD
The use of the GRID PROTECTOR is an indispensable prerequisite for the use of the MULTI GUARD. As GRID PROTECTOR and MULTI GUARD form a
system, they must be set up together. As a result, the switch positions of the GRID in the GRID / MULTI GUARD system may differ from the setting of a
GRID without MULTI GUARD. This manual only mentions the essential steps for setting the GRID PROTECTOR as part of the setting of the GRID / MULTI
GUARD system; the separate GRID PROTECTOR manual contains further details.
The GRID PROTECTOR has three power levels and two functional circuits to simply adjust bandwidth and clock rate of GIGA CANCELLING technology via
toggle switches. This makes it possible to adapt to any interference field spectrum. The change in bandwidth extends or decreases the detection range,
changing the clock rate the processing speed.
The rule is: the narrower the bandwidth, the higher the efficiency - the smaller the detection range. The lower the clock rate, the higher the extinction
rate - the less interference frequencies are detected.
The settings apply to the system GRID / MULTI GUARD.
The MULTI GUARD MASTER has three power levels to simply adjust the GIGA CANCELLING technology via a toggle switch.
Changes need some time to take effect mostly. Therefore at each of the following steps you should wait for app. two minutes before judging.
Do not change the results as determined from the previous steps when you do the subsequent steps.
The following constellations have proven to be advantageous:
-The GRID PROTECTOR connects to the first slot in the Hi-Fi system power distributor
- all 3 phases of the domestic power grid are covered by the GRID and further MULTI GUARD PHASEs.
- Several MULTI GUARDs, appropriately distributed in the room, are coupled to form a comprehensive ROOM SHIELD.
- MULTI GUARD PHASE are located near significant sources of interference in the domestic power grid, such as computer, refrigerator, hob, router,
etc., which are often in other rooms or even on other floors or in the basement.
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Setting up the MULTI GUARD
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2. Step: Base setting master
Preferably the master should have an elevated central position
within the listening room. Usually (power level 1), it will be operated
without the 12V power supply. To maintain its performance, it
should be connected to the grid with its 12V power supply once a
year for 15 minutes.
Connect antenna (upright position) to the master, without 12V
power supply.
Set the switch of the master to base setting 0.
* note the correct phase (marked with a silver dot) –measure the phase of your socket.
3. Step: MULTI GUARD PHASE
Connect the first MULTI GUARD PHASE*. By turning and bending at
the hinge the antenna has to be brought to upright position for
proper functioning.
Proven application are tested.
1. At a slot of the Hi-Fi power strip (e. g. last slot).
2. At another socket of the same phase in the room.
3. At another phase.
Retain the option with the best effect.
Then a second MULTI GUARD PHASE is tested in the same way as
above, and possibly another MULTI GUARD PHASE.
This can be continued until no further improvement or even
deterioration occurs.
It can be advantageous if all 3 phases of the domestic power grid
are covered by the GRID and further MULTI GUARD PHASE.
MULTI GUARD PHASE may advantageously be connected near
significant sources of interference in the domestic power grid, such
as computer, refrigerator, hob, router, etc., which are often in other
rooms or even on other floors or in the basement.
*
1. Step: Base setting GRID PROTECTOR
Connect* GRID PROTECTOR at the first slot of the Hi-Fi system power
distributor.
Connect antenna (upright position) and CONTROL UNIT (COUA),
without 12V power supply.
Set all 9 switches to base setting 0.

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*
Setting up the MULTI GUARD
* note the correct phase (marked with a silver dot) –measure the phase of your socket.
4. Step: MULTI GUARD EARTH
Connect the first MULTI GUARD EARTH*. By turning and bending at
the hinge the antenna has to be brought to upright position for
proper functioning.
Proven application are tested.
1. At a socket of the Hi-Fi phase in the room.
2. At another phase.
3. At sockets in the listening room that complement the ROOM
SHIELD with the already occupied slots of the MULTI GUARD
PHASE.
Retain the option with the best effect.
One MULTI GUARD EARTH is usually sufficient. However, further
MULTI GUARD EARTH can also be tested until no further
improvement or even deterioration occurs.
5. Step: MULTI GUARD ROOM
Because MULTI GUARD PHASE and EARTH already include a ROOM
function, the MULTI GUARD ROOM should only be used if further
PHASE and EARTH do not lead to any further improvement or even
to a deterioration.
MULTI GUARD ROOM are intended for the listening room. Due to
their more spacious effect, they complement and reinforce the
ROOM SHIELD in combination with the MULTI GUARD PHASE and
EARTH already used in the listening room.
Connect the first MULTI GUARD ROOM*. By turning and bending at
the hinge the antenna has to be brought to upright position for
proper functioning.
Different slots in the listening room are tested and the option with
the best effect is retained.
The best slots for further MULTI GUARD ROOMs are iteratively
tested and retained until no further improvement or even
deterioration occurs.
The best effect is usually achieved when the MULTI GUARDs (incl.
PHASE and EARTH) used in the listening room cover all room walls,
e. g. by placing units near all 4 room corners, and form a high-
performance ROOM SHIELD.

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Setting up the MULTI GUARD
6. Step: GRID PROTECTOR switches left:
Functional circuit I –setting the bandwidth
Switches: L1 = narrow to L4 = wide
Starting from the base setting the switches L1 - L4 will be set sequentially
from position 0 to position 1. Each step will increase the bandwidth.
If the bandwidth is to low, the best possible effect will not be reached yet. If
the bandwidth is to high, even a sound degradation may occur.
The test ends, when the subsequent step won’t achieve a better result.
7. Step: GRID PROTECTOR switches right:
Functional circuit II –setting the clocking
Switches: R1 = low to R4 = high
Starting from the base setting the switches R1 - R4 will be set sequentially
from position 0 to position 1. Each step will increase the clocking pace.
If the pace is to low, the best possible effect will not be reached yet. If the
pace is to high, even a sound degradation may occur.
The test ends, when the subsequent step won’t achieve a better result.
8. Step: GRID PROTECTOR switch in front –power level:
If power level 1 is not sufficient for the present interference field spectrum,
2 additional power levels can be activated. This requires the permanent
connection of the 12V power supply* to the CONTROL UNIT and the grid.
The 12 Volt power supply should be connected to a power circuit separate
from the Hi-Fi system –ideally even to a different power phase.
Do not change the previously tested switch setting of the functional circuits
I and II!
Activate power levels 2 and 3 with the front switch. Check the result
compared to switch position 0 (without 12V power supply). If the result
improves with power level 2 or 3, it is recommended to repeat steps 4 and
5 with the best power level.
0 = Power Level 1 –with COUA, without 12V power supply
1 = Power Level 2 –with COUA, with 12V power supply, LEDs on
2 = Power Level 3 –with COUA, with 12V power supply, LEDs high
* note the correct phase (marked with a silver dot) –measure the phase of your socket.

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Setting up the MULTI GUARD
* note the correct phase (marked with a silver dot) –measure the phase of your socket.
9. Step: Switch at the master –adjustment of the power level:
If power level 1 is not sufficient for the present interference field
spectrum, 2 additional power levels can be activated. This requires
the permanent connection of the 12V power supply* to the master
and the grid. The 12 Volt power supply should be connected to a
power circuit separate from the Hi-Fi system –ideally even to a
different power phase.
0 = Power Level 1 –without 12V power supply
1 = Power Level 2 –with 12V power supply, LEDs on
2 = Power Level 3 –with 12V power supply, LEDs high

Lasting Effect of the MULTI GUARD
The MULTI GUARD constantly operates to clear up interfering fields effectively and comprehensively.
If after a while you once want to hear the performance of your system without your MULTI GUARD, the buffering effect
absolutely has to be considered.
If the MULTI GUARD is switched off for a short time only, it still takes effect. But it only requires up to 15 minutes to reach its
maximum performance.
Remove the MULTI GUARD MASTER and all MULTI GUARD units from the power grid and set all antennas to a horizontal
position. Keep these conditions for several hours, preferably overnight. This way you achieve that the MULTI GUARD has no
effect any more.
Upon recommissioning the interfering fields will be cleared again fast.
Contact
[e-mail]
Phone [phone]
Imprint
Schnerzinger UG (limited) & Co. KG
Klüsenerskamp 14 | 44225 Dortmund | Germany
Registry Court : Amtsgericht Dortmund | HRA 17290 | VAT ID: DE276913602
Pers. liable partner: SCHNERZINGER Verwaltungs UG (limited)
Registry Court: Amtsgericht Dortmund | HRB 23752
WEEE-Reg.-No. DE68142962
Managing Director: Sandra Austerschulte
Phone [phone] | [e-mail]
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