Norma REVO SC-2 User manual
Safety manual
REVO SC-2
Contact informations
Make sure you register your purchase.
Visit: http://www.normaudio.com/normaudio/
Documentation Conventions
This document contains general safety and operation instructions for your
Norma product. It is important to read this document before attempting to use
this device. Please pay particular attention to safety instructions.
The information that the manual contains is subject to change without notice.
NORMA assumes no responsibility for errors that may appear within this
document and is restricted for use by NORMA Audio.
Copyright and Acknowledgements
Copyright © 2020 Norma Audio. First edition March 2020.
Opal Electronics - Via Persico, 26 - Loc. Bettenesco
Persico Dosimo (Cremona)
Italy
All rights reserved. No part of this publication may be reproduced, stored in
a retrieval system, or transmitted, in any form or by any means, electronic,
mechanical, photocopying, recording, or otherwise, without the prior written
permission of the publisher.
Printed in Italy.
NORMA has the right to make changes to this document without notice.
I • Introduction
Thank you for purchasing a NORMA Audio product.
Please read this manual thoroughly before making
connections and plugging in the unit to the mains
power supply.
Following the instructions in this manual will enable you
to obtain optimum performance and listening enjoyment
from your new NORMA unit.
Please retain this manual for future reference.
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
WARNING:
TO PREVENT FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS
APPLIANCE TO RAIN OR MOISTURE.
The lightning flash with arrowhead symbol, within an
equilateral triangle, is intended to alert the user to the
presence of uninsulated "dangerous voltage" within the
products enclosure that may be of sufficient magnitude to
constitute a risk of electric shock to persons.
The exclamation point within an equilateral triangle is
intended to alert the user to the presence of important
operating and maintenance (servicing) instructions in the
literature accompanying the appliance.
CAUTION:
TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE
COVER (OR BACK). NO USER-SERVICEABLE PARTS INSIDE.
REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
II • Unpacking
Follow these steps to safely unpack the NORMA unit:
• Open the shipping box and remove the top layer of foam.
Be careful not to damage the inside of the package with
the knife.
The packaging must contain the following items:
1 NORMA;
1 Remote control unit;
1 AC power cord (in some countries);
1 User manual;
1 Warranty police and registration card.
• Grab the underside of the NORMA unit and lift it straight
out of the packing box;
• Place the NORMA unit in a safe location and remove the
protective plastic wrapping.
Note:
If any accessories are missing, or if the unit is damaged or
fails to operate, notify your dealer immediately. If the unit
was shipped to you directly, notify your shipper immediately.
NORMA recommends that you retain the original carton
and packing materials in case you need to move or ship
the unit in the future. Neither NORMA or the shipper can
be held responsible for damages incurred during transit if
the original factory packing is not used. All factory returns
require that a previous return authorization number be
issued by NORMA prior to shipment.
Keep this manual handy for future reference.
Register your NORMA unit online at www.normaudio.com
within 15 days of purchase. Retain the original, dated
sales receipt as proof of warranty coverage.
Caution:
Keep the carton box, the foam protection and the PET
sheet out of the reach of children, choking hazard.
REVO SC-2 / Safety manual I / II • Introduction / Unpacking I
III • Before use
IMPORTANT SAFETY INSTRUCTIONS
Read this section carefully to ensure safe operation
III.I General
III.I.I • Read these instructions
All the safety and operating instructions should be read
before the product is operated.
III.I.II • Keep these instructions
The safety and operating instructions should be retained
for future reference.
III.I.III • Heed all warnings
All warnings on the product and in the operating
instructions should be adhered to.
III.I.IV • Follow all instructions
All operating and use instructions should be followed.
III.I.V • Preventing hearing loss
Caution, excessive sound pressure from earphones and
headphones can cause hearing loss.
III.I.VI • The labels containing information about safety
must be always visible and in good conditions
III.II Positioning
III.II.I • Environment and space requirements
Operating environment temperature and humidity: +5 ºC
to +35 ºC (+41 ºF to +95 ºF); less than 80% RH (cooling
vents not blocked). Do not install this unit in a poorly
ventilated area, or in locations exposed to excessive
humidity or direct sunlight (or strong articial light).
Due to stray magnetic elds, turntables,
ampliers and CD players should not be
located nearby due to possible interference.
Do not use this product in an explosive
atmosphere.
Keep electrical device out of the reach of
children. Injuries and shock hazard.
Avoid locations subject to vibration and
excessive dust. The dust could accumulate
and cause overheating.
III.II.II • Stands
The important weight of our products require
that they are placed only on an adequate
mechanical structure. We are not responsible for injuries
or damages due to a wrong positioning. Do not put
NORMA devices on high places, to avoid injury from tip-
over or falling. This product cannot be mounted to a wall
or ceiling.
III.II.III • Object and Liquid Entry
Do not use this apparatus near water
This product shall not be exposed to dripping
and splashing, for example near a bath tub, wash bowl,
kitchen sink, laundry tub, in a wet basement, near a
swimming pool and the like. Do not place an object
containing liquid, such as a ower vase, on the appliance
even if it is switched o.
Never spill liquid of any kind on the product.
Internal condense can be formed if the amplier is carried
from an extremely cold environment to an extremely hot
one. Please wait at least for an hour before operating it
again. Never push objects of any kind into the apparatus
through openings as they may touch dangerous voltage
points or short-out parts that could result in a re or
electric shock.
Never use this product with wet hands, shock and injury
hazard.
III.II.IV • Flame
Do not place a aming object, such as a candle
or lantern, or near the product. Do not use
free ames or amable substances near this appliance.
III.II.V • Ventilation
Slots and openings in the cabinet are provided
for ventilation and to ensure reliable operation
of the product and to protect it from overheating. Do not
block any ventilation openings. Install in accordance with
the manufacturers instructions. Ventilation should not
be impeded by covering the ventilation openings with
items such as newspapers, table cloths, curtains and so
on. The openings should never be blocked by placing the
product on a bed, sofa, rug, or other similar surface. This
product should not be placed in a built-in installation
such as a bookcase or rack unless proper ventilation is
provided or the manufacturers instructions have been
adhered to. Ensure that there is adequate ventilation.
Leave 20 cm (8”) of free space at the top and sides and
10 cm (4”) at the rear. The rear edge of the shelf or board
above the apparatus shall be set 10 cm (4”) away from
the rear panel or wall, creating a ue-like gap for warm
air to escape.
III.II.VI • Heat
Do not install near any heat sources such
as radiators, heat registers stoves, or other
apparatus (including ampliers) that produce heat.
REVO SC-2 / Safety manual
II III • Before use
III.II.VII • Batteries
The remote control batteries cannot be
exposed to excessive heat such as sunshine,
any improper use may result in re or personal injuries.
III.III Power
III.III.I • AC fuse
The AC fuse inside the unit is not user-serviceable. If you
cannot turn on the unit, contact your NORMA dealer.
III.III.II • Power sources
This product should be operated only from the type of
power source indicated on the product. If you are not
sure of the type of power supply to your home, consult
your product dealer or local power company.
AC outlet voltages vary from country to country. Make
sure that the voltage in your area meets the voltage
requirements printed on the unit’s rear panel (e.g. AC
230 V, 50 Hz or AC 120 V, 60 Hz). The power cord plug is
used to disconnect this unit from the AC power source.
Make sure that the plug is readily operable (easily
accessible) at all times.
The unit is of class 1 construction and must be connected
to a mains socket outlet with a protective earthing
connection.
III.III.III • Mains cord
The mains cord is intended to be the safely disconnected
to the device for this apparatus and shall remain readily
operable at all times.
Be sure to insert each power cord securely. To prevent
hum and noise, do not bundle the interconnect leads
with the power cord or speaker leads.
To completely disconnect this product from the mains,
disconnect the plug from the wall socket outlet. The
mains plug is used to completely interrupt the power
supply to the unit and must be within easy access by the
user.
III.III.IV • Power plug / Wall outlet
• If the AC plug of this unit does not match the AC
outlet you want to use, the plug must be removed and
appropriate one tted.
• Replacement and mounting of an AC plug on the power
supply cord of this unit should be performed only by
qualied service personnel.
Contact your NORMA dealer for more information.
• If connected to an AC outlet, the cut-o plug can cause
severe electrical shock. Make sure it is properly disposed
of after removal.
To avoid re hazard or other problems, the equipment
should be disconnected by removing the mains plug
from the wall socket when left unused for a long period
of time (for example, when on vacation).
• This product must be terminated with a three-
conductor AC mains power cord that includes an earth
ground connection. To prevent shock hazard, all three
connections must ALWAYS be used.
III.III.IV.I • UK plug-tting instructions (UK only)
This appliance is supplied with a moulded three pin
mains plug for your safety and convenience. A 13 amp
fuse is tted in this plug. Should the fuse need to be
replaced, please ensure that the replacement fuse has a
rating of 13 amps and that it is approved by ASTA or BSI
to BS1362. Check for the ASTA mark or the BSI mark
on the body of the fuse.
If the plug contains a removable fuse cover, you must
ensure that it is retted when the fuse is replaced. If
you lose the fuse cover the plug must not be used until
a replacement cover is obtained. A replacement fuse
cover can be obtained from your local dealer. If the tted
moulded plug is unsuitable for your socket outlet, in any
case cut the cord for repalce the plug. There is a danger
of severe electrical shock if the cut o plug is inserted
into any socket. Please contact your local dealer for the
appropriate power cord with appropriate plug.
How to replace the fuse
Open the fuse compartment with a
screwdriver and replace the fuse.
III.III.V • Mains switch
When the switch is in the OFF position, the equipment is
not completely switched o from mains.
The STANDBY mode on this unit will not completely
shut o all power from the AC outlet. Since the power
cord serves as the main disconnect device for the unit,
you will need to unplug it from the AC outlet to shut
down all power. Therefore, make sure the unit has been
installed so that the power cord can be easily unplugged
from the AC outlet in case of an accident.
III.III.VI • Power supply
If an external power supply is required, the equipment
shall be installed near the power supply so that the
power supply is easily accessible.
III.III.VII • Power cord protection
Protect the power cord from being walked on or pinched
particularly at plugs, convenience receptacles, and the
point where they exit from the apparatus. Do not handle
the mains cord with wet hands.
III.III.VIII • Overload protection and prevention
Do not overload wall outlets, extension cords, or integra
convenience receptacles as this can result in a risk of re
or electric shock.
Be sure that the used wall outlet and the circuitry above
it can provide the correct amount of current without
signicant voltage drop. It can result in a risk of re or
electric shock.
REVO SC-2 / Safety manual III • Before use III
III.III.IX • Lightning protection
Always unplug this apparatus during lightning storms.
For additional security, remove all connections from the
unit when unused for long periods of time.
III.IV Servicing
III.IV.I • Do not try to repair this product
Do not attempt to service this product yourself as opening
or removing covers may expose you to dangerous voltage
or other hazards. Refer all servicing to qualified service
personnel.
For technical assistance, please contact a qualified
technician or a NORMA dealer.
III.IV.II • Damage requiring service
• Refer all servicing to qualified 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.
III.IV.III • Service warning
Unplug the apparatus from the wall outlet and refer
servicing to qualified service personnel under the
following conditions:
• When the power-supply cord or plug is damaged;
• If liquid has been spilled, or objects have fallen into the
apparatus;
• If the apparatus has been exposed to rain or water;
• If the apparatus does not operate normally by following
the operating instructions. Adjust only those controls that
are covered by the operating instructions as an improper
adjustment of other controls may result in damage and
will often require extensive work by a qualified technician
to restore the apparatus to its normal operation;
• If the apparatus has been dropped or damaged in any
way;
•When the apparatus exhibits a distinct change in
performance this indicates a need for service.
III.IV.IV • Replacement parts and accessories
When replacement parts are required, be sure the
service technician has used replacement parts specified
by the manufacturer or have the same characteristics as
the original part. Unauthorized substitutions may result
in fire, electric shock, or other hazards.
Use only accessories and optional boards specified by
the manufacturer. Clone or non-original accessories may
result in fire, electric shock or other hazards.
III.IV.V • Safety check
Upon completion of any service or repairs to this product,
ask the service technician to perform safety checks
to determine that the product is in proper operating
condition.
III.IV.VI • Never disassemble or modify the unit
Do not use this product with any covers removed, shock
hazard. Do not bypass any fuse, it may cause damages
and fire.
III.V Care & maintenance
III.V.I • Cleaning
Unplug this product from the wall outlet before
cleaning.
• Do not use liquid cleaners or aerosol cleaners;
• Use a damp cloth for cleaning;
• Do not let insecticides, benzene, and thinner come
in contact with the unit, absolutely do not use these
substances to clean the unit.
REVO SC-2 / Safety manual
IV III • Before use
IV • Operating
IV.I Connections
Warning:
When making connections to this or any other
component, make sure all components are o. Turn o
all systems power before connecting the NORMA unit to
any other component. For additional security, remove
the power cord before making the connections.
Make sure all cable terminations are of the highest
quality, free from frayed ends, short circuits, or cold
solder joints.
• Before making any connections, make sure all power
is turned o and only use suitable interconnects. For
additional security, remove the power cord before
making the connections;
• Before attempting any system interconnection, please
familiarize yourself with the front and rear panel controls
of the NORMA unit;
• Do not connect the NORMA unit speakers output
terminals to any device other than a loudspeaker. Do
not short-circuit the amplier’s output terminals. Never
connect the output terminals of one amplier to the
output terminals of another amplier.
IV.II Warming up
This unit’s top, bottom and lateral heatsinks may get hot
after prolonged use. This is normal but avoid touching
them.
IV.III Running in time
Electronic audio components have a running in time
of around a 200 - 300 hours. This will allow the new
components to settle down and the sonic properties will
improve over this time.
IV.IV Long time do not use
If you do not use this unit for a long time, it may not work
properly the next time you turn it on, so be sure to use it
occasionally.
If you intend not to use the remote controller for a long
time, remove the batteries to prevent damage from
leakage or corrosion. Remove expired batteries as soon
as possible to prevent damage from leakage or corrosion.
Do not leave rubber or plastic items on this unit for a long
time, because they may leave marks on the case.
IV.V Application elds
This product is for general household purposes. Any
failure due to use for other than household purposes
(such as long-term use for business purposes in a
restaurant or use in a car or ship) and which requires
repair will be charged for even during the warranty
period.
REVO SC-2 / Safety manual 4 • Operating V
V • Recycling & waste
V.I Notes about recycling
This products packaging materials are
recyclable and can be reused. Please dispose
of any materials in accordance with the local
recycling regulations. When discarding the unit, comply
with local rules or regulations.
Batteries should never be thrown away or incinerated
but disposed of in accordance with the local regulations
concerning battery disposal. This product and the
supplied accessories, excluding the batteries, constitute
the applicable product according to the WEEE directive.
Products and batteries with the symbol (crossed-out
wheeled bin) cannot be disposed as household waste.
Old electrical and electronic equipment and batteries
should be recycled at a facility capable of handling these
items and their waste byproducts. Contact your local
authority for details in locating a recycle facility nearest
to you.
V.II Information on disposal for users
(private households)
V.II.I • In the European Union
Attention:
If you want to dispose of this equipment, please do
not use the ordinary dust bin. Used electrical and
electronic equipment must be treated separately and
in accordance with legislation that requires proper
treatment, recovery and recycling of used electrical and
electronic equipment.
Following the implementation by member states, private
households within the EU states may return their used
electrical and electronic equipment to designated
collection facilities free of charge. In some countries your
local retailer may also take back your old product free of
charge if your purchase a similar new one.
If your used electrical or elctronic equipment has batteries
or accumulator, please dispose of these separately
before and according to local requirements.
By disposing of this product correctly you will help ensure
that the waste undergoes the necessary treatment,
recovery and recycling and thus prevent potential
negative effects on the environment and human health
which could otherwise arise due to inappropriate waste
handling.
V.II.II • In other countries outside th EU
If you wish to discard this product, please contact your
local authorities and ask for the correct method of
disposal.
For Switzerland:
Used electrical or electronic equipment can be returned
free of charge to the dealer, even if you don’t purchase a
new product. Further collection facilities are listed on the
home page of www.swisco.ch or www.sens.ch .
V.III Information on disposal
for business user
V.III.I • In the European Union
If this product is used for business purposes and you
want to discard it:
Please contact your NORMA dealer who will inform you
about the take-back and recycling. Small products (and
small amounts) might be taken back by your local
collection facilities.
For Spain:
Please contact the established collection system or your
local authority for take-back of your used products.
V.III.II • In other Countries outside the EU
If you wish to discard of this product, please contact
your local authorities and ask for the current method of
disposal.
Attention:
Yourproduct is marked with this symbol.It means
that used electrical and electronic products
should not be mixed with general household
waste. There is a collection system for these products.
REVO SC-2 / Safety manual
VI V • Recycling and waste
User manual
REVO SC-2
CONGRATULATIONS
First of all, we would like to thank you for the trust you have placed in NORMA. The product
you purchased is the result of a long research and development process in which we have put
our technical experience, and our passion for music. This products will oer you the best that
technology has expressed for high quality sound reproduction. In front of the choice of what
to oer as the possibility of customizing the product functions, there are two ways: the rst is
a simply and immediate user menu, but inevitably with limited possibilities. The second one
is wider and able to adapt its functioning (and the sound performance) to the user’s desire.
Our decision was to oer you the possibility of customization as much as possible the functions
that inuence the nal result. We are sure that you can appreciate this way. In virtue of this,
the menus are wide. You will nd interesting to read and to study how to use it in detail, in
order to better adapt it to your desire. We hope that this manual is clear and that it will answer
to each your questions; however we will be pleased to answer to any questions or doubt
that you will have. We are condent that you will nd great satisfaction from the use of our
products, which, if treated with care, will give you lasting reliability. Before use, it is essential
to read and learn the entire contents of this document.
REVO SC-2 / User manual 1 • Controls and connections 1
1.1 List of commands and front
indications list
A • Multi-function display
The display shows the controls and functional states.
B • Indicator POWER STAND-BY
In the STAND-BY state the indicator is illuminated.
In the POWER ON state indicator is o.
C •Infrared receiver for remote control [IR]
Optical receiving position for the infrared sensor of the
remote control.
D • CLEAR Command [MUTE]
Deletes the data or selection.
Toggles the MUTE feature.
E •OK button
Conrms the data or the function active at that moment.
F •SET button [POWER]
Enables and disables access to the setup functions of the
operating parameters.
Turns on and o the device [POWER].
G • button [SEL -] [VOL -]
BACK selection button [-].
button to decrease volume [VOL -].
H • button [SEL +] [VOL +]
NEXT selection button [+].
button to increase the volume [VOL +].
1 • Controls and connections
Fig. 1 Front panel
D
AB C
E F G H
REVO SC-2 / User manual
2 1 • Controls and connections
1.2 Controls and rear connections
A • ON / OFF switch
B • Power connector
AC power inlet. Housing for mains cable connection
according to IEC / CEE 22 (VDE C13 connector). Check that
the mains voltage corresponds to that indicated on the
label on the rear panel.
C • Fuse
The AC power fuse. Verify that the voltage coincides with
that indicated on the rear panel.
Attention:
If for any reason the user have to replace the fuse,
this is a task reserved for qualied personnel in the
service centres.
D • AUX1: AUXILIARY 1, DB9 male socket
Reserved connector for future use.
E • AUX2: AUXILIARY 2, DB9 female socket
Reserved connector for future use.
F • SLOT1: Space expansion 1
Optional DAC board rear panel.
G • SLOT2: Space expansion 2
Optional 5.1 multichannel board rear panel.
H • GND: GND Phono Screw
Ground socket for turntable in the case of use of internal
phono stage [optional].
I • IN 1: RCA connection sockets
Input socket for signal IN 1 [PHONO] channel right / left.
Note:
The input IN 1 can be congured as an input for pick-up
[PHONO] MM / MC entering the appropriate form of
preamplication of the signal.
When this input isn’t used keep it shorted with the supplied
RCA shorting plugs.
L • IN 2: RCA connection sockets
Input socket for signal IN 2 channel right / left.
M • IN 3: RCA connection sockets
Input socket for signal IN 3 channel right / left.
N • IN 4: RCA connection sockets
Input socket for signal IN 4 channel right / left.
O • OUT Unbal. : RCA connection sockets
Output socket for UNBALANCED signal right / left.
P • OUT Bal. : Balanced XLR sockets connection
Output socket for BALANCED signal right / left.
Q • IN 5: Balanced XLR sockets connection
Input socket for balanced signal IN 5 channel right / left.
Note:
The XLR balanced input (IN 5) uses an integrated circuit to
convert the balanced signal to unbalanced signal.
R • IN 6: Balanced XLR sockets connection
Input jack for balanced signal IN 6 channel right / left.
Note:
The XLR balanced input (IN 6) uses an integrated circuit to
convert the balanced signal to unbalanced signal.
1.3 Technical notes
1.3.1 • Technical notes about inputs
The REVO SC-2 preamplier has 6 inputs, 4 of which are
unbalanced and 2 balanced.
The input IN 1, as well as normal line input can be
congured as an input for pick-up [PHONO] MM / MC
entering the appropriate form of the signal to pre-
amplicate.
The input IN 5 and IN 6 are balanced inputs. Since the
preamplier REVO SC-2 presents an internal topology,
balanced and unbalanced, to the inputs IN 5 / 6 is present a
circuitry for the conversion from unbalanced to balanced
based on the operational INA-134 Burr-Brown (Texas). It
follows that the performance (and instrumental sound)
of the preamplier can be inuenced by the presence
of this additional component. We recommend, where
possible, to do some listening tests between the RCA &
XLR in order to establish, in the particular conguration
of the user, what type of connection is better.
In carrying out comparative tests must be taken of a
number of important factors of inuence, including:
A
C
BH
FG I L M N O P Q R D E
Fig. 2 Rear panel
REVO SC-2 / User manual 1 • Controls and connections 3
•The sources to be connected, in the majority of cases,
have dierent circuit congurations in their outputs RCA
or XLR. It is not always true that the XLR output is the best
ever, and often the topology of the source is unbalanced,
then the XLR is obtained using a Additional circuitry,
howerver sometimes is also true the exact opposite).
In this case, the use of XLR connection source / REVO SC-2
involves unfavorable presence of 2 additional stages in
the signal path;
• XLR interconnect cables are often of a dierent quality
from the RCA cable. This factor must be taken into
account in the analysis of its ratings.
1.3.2 • Technical notes about connections
The device must be able to make the most of their features.
Nothing in the listening chain should be overlooked,
starting with the interconnect cables, which must be of
excellent quality, very transparent and neutral. NORMA
products are of extremely high quality and will benet
greatly with the use of appropriate cables.
Nothing in the listening chain should be underestimated,
from the quality of the cables to the position of the
speakers. For example, if used cables are of a low quality,
the resulting sound will be much less than the potential
of the device.
1.3.3 • Technical notes about active / passive
The preamplier REVO SC-2, can operate in either active
or passive mode.
In active mode, after the volume control, the audio signal
is amplied by the line stage. RCA and XLR are then
driven by the active stage.
In passive mode, after the volume control, the audio
signal is sent directly to the output. RCA and XLR are then
controlled by the control stage volume, without active
stages. The preamp works only in attenuation.
Using the ACTIVE GAIN function it is possible to insert
the gain value of the active stage, so that during the
switching between the two modes the listening volume
remains equal.
This value should theoretically coincide with the the
stage line gain , equal to + 17.5 dB.
Note:
In the passive mode, the output impedance is higher
value (up to a few Kohm) with respect to the active mode
and not constant with attenuation set. From this it follows
that, in relation to the load impedance due to the amplier
connected, the actual value of attenuation can not coincide
with the value indicated by the display. The deviation, usually
in attenuation, may come to be of the order of a few dB. It is
also not guaranteed monotonicity of behavior.
However, beyond the limits of these operating characteristics,
the passive mode has the great advantage of reducing to
a minimum the stages in the signal path. It is therefore
advisable to experience this mode of operation, taking care
to maintain the interconnection cables as short as possible.
1.4 Warm up and run in
The warm up is a fundamental factor. For the best sound
performance we recommend an initial run of about 200
to 300 hours of operation with speakers connected and
music played at a normal listening level. After a long
period of inactivity, the unit will require at least 3 to 4
hours operation to reach the optimum performance
levels.
1.5 The problem of hum
Frequently the connection of multiple devices can cause a
certain amount of hum, even when the individual devices
are entirely silent. Connecting equipment together can
create ground loops which can introduce in the audio
signal path a certain amount of network harmonics. This
problem, which also aects professional installations,
is long-standing and not easy to solve. Its inuence is
particularly evident in the case of high gain ampliers
and in the presence of signals of very low amplitude. The
situation may sometimes be particularly noticeable with
phono stages, turntables and pick-ups.
We point out some possible remedies:
• Reduce the connection cables length;
• Change signal cables and power cables position;
• Increase the distance between units, or arrange them
in a dierent way;
• Avoid using devices that can induce electromagnetic
elds or interference, such as electric motors, uorescent
lights or halogen lamp low voltage transformers;
• It may be useful to increase the signal connection
shielding from one side of the termination. If a device
proves to be involved in hum problems and / or ground
loops contact the manufacturer to try to solve the
problem;
• The electrical safety is due to its connection to safety
ground. Before connecting and using the device, make
sure that the grounding system is ecient.
NORMA is not responsible for any damage caused
resulting from wrong system grounding, or failure
to follow safety procedures and regulations or a
disconnection made in any way to the ground security
equipment;
• Check that the mains power cable has a ground
connection and do not remove it, for any reason;
• LED TV’s or PLASMA TV’s emit large amounts of infrared
rays that can interfere with the IR remote control signal.
REVO SC-2 / User manual
4 2 • Start to use
2 • Start to use
2.1 NORMA IR remote description
The IR remote can access all operating functions.
See Remote controls manual at page 22.
2.2 Turn ON / OFF
The REVO series preampliers are equipped with a
sophisticated power on system, integrated with the
system remote control and electronic protections. This
system consists of three phases: POWER OFF, STAND-BY,
POWER ON [OPERATE].
2.2.1 • Power OFF
In this phase, the rear control switch is in the OFF position
and the preamplier is o.
2.2.2 • Power OFF to standby
Placing the rear control switch in the ON position, the
preamplier is active in STAND-BY POWER indicator on the
front panel will be on with a low intensity. This condition
can be maintained indenitely, the amplication stages
are not powered, but the preamplier is ready to receive
the command switch.
2.2.3 • Power ON [operate]
The power is on to all intents and purposes, this can
be determined by the prolonged action on the front
SEL button or IR remote POWER button. In both cases,
initially the indicator ashes for a period of time equal to
approximately 10 seconds.
Subsequently, the light indicator turns solid, indicating
the complete operation of the preamplier and the
connection to the amplier/s.
2.2.4 • Power ON to standby
To put the preamp in STANDBY mode, press the SEL
button [or the POWER button on the remote control], the
indicator will switch to low-intensity lighting.
2.2.5 • Standby to power OFF:
To POWER OFF the preamplier, press the POWER
button, on either the remote control or the front panel
of the amp, and then put the rear control switch into
the OFF position. Never work directly on the rear control
without rst placing the preamplier into STANDBY.
2.3 Functional settings, set command
Main: Input 3
Vol: -94.0 dB P
When the device is in normal operating mode the display
shows:
• On the rst row:
Main: Input 3
Indicates the currently connected input, when you turn
on the device if the resume function is not enabled, by
default it doesn’t connect any input so it shows :
Main: OFF
• On the second row:
Vol: - 94.0 dB P
Indicates the currently volume value and setting, in this
case the attenuation level is set to – 94.0 dB and the
mode is passive.
• When you turn on the device if the resume function is
not enabled, by default it shows:
Vol: - 127.5 dB
• In the bottom-right corner you can see:
P Preamplier in passive mode
Preamplier in active mode (in this case the display
doesn’t show anything).
Maximum attenuation value reached - 127.5 dB;
Minimum attenuation value reached - 0.0 dB;
The preamplier is right-balanced;
The preamplier is left-balanced.
With the SET button you can set various functional
parameters, as described in the following paragraphs. In
conjunction with the SEL +, SEL -, OK.
It ‘s possible to access many “nested” settings within the
SET function. Once you press SET you can access the
following conguration menus using the SEL + / SEL -
buttons.
•Input Selection;
• DAC Configuration
(if tted, see the section at the end of the manual);
• Balance Attenuation;
• AV Selection (only if “Audio Video” is
enabled in the “Conguration Setting” section);
• Configuration Setting;
• Sleep Function;
• Gain Active Passive.
Multifunctional display exampleFig. 3
REVO SC-2 / User manual 2 • Start to use 5
2.3.1 • Input selection
Using the INPUT SELECTION is possible to select the
desired input. If the resume function is not active (storing
the state before the previous shutdown), during the
power up, the preamp will be in the following conditions:
• Main: OFF (no input selected);
• Volume: - 55.0 dB.
With the remote control, it may be possible to directly
access the function.
See the appropriate section of the manual.
2.3.1.1 • Input selection by front panel commands
• Press SET and use SEL + / SEL - until the display shows
this message:Input Selection
Setting
Press OK to conrm and enter the submenu.
• Use SEL + / SEL - to select the desired input:
Main: Input 3
Connection
Press OK to conrm, this will take you back to the main
menu.
2.3.1.2 • Input selection by remote control commands
• Press IN on the remote control, the display will show
this message: Main: Input 3
Connection
Use SEL + / SEL - or the numeric keypad to select the
desired input, then press OK, this will take you back to
the main menu.
2.3.2 • DAC Conguration
See the appropriate section at the end of this manual (if
DAC board is tted).
2.3.3 • Balance Attenuation
Using the balance attenuation function, you can set for
each channel (left or right) the relative level of attenuation
compared to the other channel.
2.3.3.1 • Balance setting by front panel commands and
remote control commands
• Press SET and use SEL + / SEL - until the display shows
this message:
Balance Attenuation
Setting
Press OK to conrm and enter the submenu.
• Use SEL+ to right-balance and SEL - to left-balance:
L Balance R
+0 dB +0
Press OK to conrm, this will take you back to the main
menu.
The presence of the unbalanced condition is indicated by
the display using an arrow pointing towards the channel.
With the remote control, it may be possible to directly
access the function the absolute range of assistance may
not exceed the limits of - 127.5 dB and 0.0 dB.
2.3.4 • AV Selection
Through the AV SELECTION function, you can enable
the use of SC-2 in an Audio-Video plant. To activate it
you need to enable the function in the conguration
setting menu. In the other hand to disable this function,
press the CLR key. The controls SEL + / SEL - switches the
display screen. It must previously have been enabled by
the conguration menu, AUDIO-VIDEO, ENABLE.
Attention:
During operation in AUDIO-VIDEO mode, the
preamplier is locked, insensitive to any other
command that is not the CLR key.
2.3.5 • Conguration Setting
In the “Conguration Setting” menu we can nd the less
frequently used settings for general conguration of the
preamplier.
For a complete description see section 2.4 .
2.3.6 • Sleep Function
Using this function you can set the sleep time, after which
the system automatically turns o, as if it is an action
on the POWER button. This feature can be useful if you
want to listen to music before going to sleep, without the
risk of leaving the machine ON for an indenite time. It’s
possible to set the sleep time in 30-minute intervals, up
to maximum of 120 minutes.
2.3.7 • Gain Active Passive function
Using the Gain Active Passive function mode you can
switch between Active and Passive mode. During the
changeover, the system will automatically compensate
the gain dierence by the value set in the Conguration
Setting menu, Active Gain.
2.3.7.1 • Active/Passive switch by front panel commands
Press SET and use SEL + / SEL - until the display shows
this message:
Gain Active/Passive
Setting
Press OK to switch between the two modes. On the
display you can notice that the words: “Active” and
“Passive” have been inverted:
Gain Passive/Active
Setting
Press CLR to exit, this will take you back to the main menu.
REVO SC-2 / User manual
6 2 • Start to use
When the passive mode is enabled you can see a Pon
the bottom-right of the display.
2.3.7.2 • Active / Passive switch by remote control
Press A / P on the remote control to switch between the
two modes, when you are in Passive mode you can see a
P on the bottom-right of the display.
Of course, the absolute range of intervention can not
exceed the limits of - 127.5 dB and 0.0 dB.
2.4 Functional conguration
In the menu Conguration Setting” we can nd the less
frequently used settings for general conguration of the
preamplier.
The settings are accessible in a circular way using the
controls SEL + and / or SEL -, once it reaches the desired
one conrm with OK.
In this section the values of the parameters can be set
using the SEL + and SEL -.
Reached the desired value, conrm with the OK button.
To exit the SETUP press CLEAR, or press again the SET
command.
There is a table to sum up the main conguration settings,
the settings with a nested menu have a note which refer
to the dedicated paragraph.
Message
Display Light
Setting
Type Volume
Setting
Resume
Setting
Screen Saver
Setting
Reference Volume
Setting
Input Name
Setting
Mute Level
Setting
Audio - Video
Setting
Function
Display intensity
Quiet volume change
Resume
Screen saver mode
Reference volume value
Input name value
Mute level
Direct AV in setting
100 / 87,5 / 75 / 62,5 / 50 / 37,5 / 25 [%]
QUIET / NORMAL
OFF / ON
TYPE / TIME / IMMEDIATE
*See more on 2.4.4 section
ATTENUATION / GAIN
*See more on 2.4.5 section
1 / 2 / 3 / 4 / 5 / 6 / DAC / RESET
*See more on 2.4.6 section
FUNCTION / INPUT / VOLUME
*See more on 2.4.8 section
Multichannel
Setting 5.1 surround
board setting
Input A/Input B
(only if MCH6 board is fitted)
From - 0.5 dB to - 30.0 dB
Possible choice
2.4.1 • Display light
Using the function DISPLAY LIGHT is possible to vary the
display brightness to better suit the environment light
conditions or to the tastes of the user.
The adjustment is possible between 7 decreasing values:
100%, 87.5%, 75%, 62.5%, 50%, 37.5%, 25%.
2.4.2 • Type volume
Due to the particular conguration of the volume
management implemented in the SC-2 preamplier,
whenever you acts on the volume control, a number of
relay have to operate. This involves a little noise, which
does not in any way aect their durability and allows an
easy verication of the reached level. However, if you
want, a QUIET operation is possible, using the function
TYPE VOLUME, to switch to silent mode. In this way
the operation becomes silent, placing the appliance at
maximum attenuation duraing the volume adjustment.
The normal listening condition is automatically restored
to the desired value reached and showed the display, 0.5
seconds after you release the command SEL + or SEL -.
2.4.3 • Resume
Using the resume function can be maintained the state
was saved before the previous shutdown, even with the
power o and detached from the power supply.
So it will be restored exactly the same status with respect
to previous MAIN inputs, listening VOLUME, conguration
PARAMETERS etc.. etc..
Caution:
This function, although very convenient, can become
dangerous if the device is used also by other users.
NORMA is in any way responsible for any accidents or
damages of any kind that may result from the use of
this function.
2.4.4 • Screen saver
Screen saver function can protect the display by long
periods viewing conditions with the same message. In
fact, as all devices that are based on the light emission of
phosphorus elements, also adopted in the display SC-2
preamplier, could over time have a non-uniform optical
behavior if for long periods (more than 5 hours) displays
static messages at high intensity. For this purpose there
is a screen saver function, adjustable both as a type that
as the time of intervention. The display returns normal
if it receives any command, which means that under
screen saver, the rst key is functionally ignored, it
has the only function to restore the initial state. In the
RESUME function you can set the following parameters:
Type • Selects between 4 possibilities;
Disable • Function inactive;
Light display • At the end of the selected
interval, the intensity begins to decrease automatically;
Circular • At the end of the selected interval, a
message is displayed with the eect of circular rotation;
Black display • At the end of the selected
interval, the light intensity is automatically cancelled and
the display appears to be turned o;
Time • The time is adjustable in a range from 1
minute to 200 minutes;
Immediately • Time of action is immediate.
Functional congurationTab. 1
REVO SC-2 / User manual 2 • Start to use 7
a÷z Input Name
Input 3 Extput 3
Here we have to replace the lowercase p “p” with a dash
“-”, so press the MUTE button until you see “#÷_“. Using
SEL + / SEL -, search the “-”.
When you reach the dash symbol “-” press OK, repeat this
thing also for the fth, the sixth and the seventh character
because you have to replace the lowercase u “u” with the
uppercase D “D”; the lowercase t “t” with the uppercase A
“A” and the blank space “ ” with the uppercase C “C”.
A÷Z Input Name
Input 3 Ext-DAC3
Press OK to conrm.
Then we don’t need anymore the number “3” so we have
to replace it with a blank space, that we nd in special
characters section.
#÷_ Input Name
Input 3 Ext-DAC
Press OK until you return to the previous menu. Press
SET to return to the main page. To conrm that the name
has been updated try selecting the renamed input and
see if it kept the name.
Main: Ext-DAC
Connection
Press OK and you will see on the main page the name:
Main: Ext-DAC
Vol: - 94.0 dB P
2.4.7 • Mute level
The MUTE button is designed to immediately reduce the
volume level with the action on the MUTE button (CLEAR
on the front panel).
Using this function you can set the MUTING attenuation
within the range of - 5.0 dB and - 30.0 dB.
2.4.8 • Audio video
In AUDIO-VIDEO applications, the unit SC-2 has the
ability to operate in “LOCKED” mode, in this case the
volume control is excluded and managed directly by the
processor and / or from the external decoder.
You can set the following parameters:
FUNCTION (Enable / Disable);
VOLUME (0.0÷127.5);
INPUT (1÷6).
Note:
If you choose the option black display or immediatly is
possible for those who wish, keep the display o almost
constantly during playback.
2.4.5 • Reference level
Using the function REFERENCE LEVEL, you can set for
each source a relative level (both in attenuation and in
gain) so that for each variation of the listening source, the
volume level is automatically balanced.
Of course, the absolute range of assistance may not
exceed the limits of - 127.5 dB and 0.0 dB.
2.4.6 • Input name
Using the input name function, you can assign an
alphanumeric name to each input. So when you have
to select one of them you can see the assigned name
instead of the default name.
This operation can be carried out only with the IR remote
control.
If you want to keep the assigned name also after turning
o the preamplier enable the resume function.
For a complete description see section 2.4 .
To change the input name, enter the conguration
setting menu then select the input setting menu, after that
select the input of which you want to change the name
(1÷6, DAC).
For example if you want to name “Ext-DAC” the third
input follow this guide.
Input Name
Input 3
Pressing OK you can enter the name editor.
A÷Z Input Name
Input 3 Input 3
Note that the possible characters are divided in four
subcategories:
A÷Z • Uppercase characters
a÷z • Lowercase characters
0÷9 • Numbers
#÷_ • Special characters
When a character is blinking you can switch between
these categories using the MUTE button on the IR remote
control.
Here you can edit each character selecting rst the
category and then the desired character using SEL + /SEL -.
In this case the rst, the second and the third character
of the desired name (Ext-DAC) are part of the same
category of the default name so using SEL + / SEL - select
the character “E” in the rst place then press OK, repeat
this operation for the second and the third.
REVO SC-2 / User manual
8 3 • Maintenance
2.4.9 • Multichannel setting
You can nd this menu only if the MCH6 board is tted
and if the selected input is expanded by multichannel
board.
See the appropriate section at page 18 of the manual.
2.5 Volume control
The preamplier REVO SC-2 has a sophisticated volume
control with 256 0.5 dB steps. The display shows the
attenuation set, between 0 dB and - 127.5 dB. For
convenience of use, speed of adjustment is automatically
incremented between 3 dierent values as long as
it continues to act uninterrupted on the SEL + / SEL -
commands.
With the remote control, it may be possible to directly
access the function, see the appropriate section.
3 • Maintenance
3.1 Cleaning
Before cleaning the unit, turn it o and unplug it from the
electricity supply and wait at least 10 minutes. Your device
has been designed with the best technical solutions
combined with an aesthetic nish of the highest quality,
but for it to remain unchanged over time, it is essential to
observe the following procedures:
• Do not dry-clean surfaces and in particular the front
panel;
• Lightly dampen a cloth with a small amount of warm
water (40 - 50 degrees);
• Make circular movements and do not press hard on the
panel;
• Dry o gently, always with cotton or a soft cloth, using a
very delicate circular motion;
• Be very careful to avoid that no water penetrates into
the unit, the cloth should be moist but not wet;
• Do not reconnect the unit until it is completely dry;
• Under no circumstances use alcohol, solvents, petrol or
any type of chemical product;
• Please note that the nish and aesthetic components
are in no way covered by the warranty.
3.2 Repairs
For any issues please refer to the safety manual. NORMA
products are the result of precision engineering with
sophisticated circuitry and extremely high-quality
components. In the unlikely event of failure, make sure
to refer to a highly qualied assistant that has genuine
original spare parts. NORMA is contactable for any
customers who have an issue which needs to be resolved.
NORMA is not responsible for any errors, omissions or
incompleteness of this manual, and is not responsible
for accidents or damage of any kind that may result
from non-compliance, even partial, of the information
provided in this manual. Despite the eort to identify all
possible situations, NORMA is not responsible for any
damage that may be caused to people or from improper
use.
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