Norma HS-IPA1 User manual
Safety manual
HS-IPA1
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.
HS-IPA1 / 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.
HS-IPA1 / 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.
HS-IPA1 / 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.
HS-IPA1 / 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.
HS-IPA1 / 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.
HS-IPA1 / Safety manual
VI V • Recycling and waste
User manual
HS-IPA1
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.
HS-IPA1 / User manual 1 • Controls and connections 1
1.1 Front panel
A • Multi-function display
The display shows the controls and functional states.
B • POWER STAND-BY indicator
In the STAND-BY state the indicator is illuminated.
In the POWER ON state indicator is o.
C • HEADPHONE indicator
When the DAC is in HEAD mode the indicator is illuminated
(only in PRE version).
D • ON / STAND-BY button
Turns on and o the device [POWER].
E • HEAD button
Switches between HEADPHONE and LINE mode (only in
PRE version).
F • ANALOG button
Press this button to select an analog input (only in PRE
version).
G • DIGITAL button
Press this button to select a digital input.
H • F1 button
Invert the signal phase.
I • CLEAR button
Deletes the current selection, use it to exit from menus.
J • button [SEL -] [VOL -]
BACK selection button [-].
button to decrease the volume [VOL -] (only in VAR and
PRE versions).
K • button [SEL +] [VOL +]
NEXT selection button [+].
button to increase the volume [VOL +] (only in VAR and
PRE versions.
L • OK button
M • MENU button
Press this button to access the main menu.
1 • Controls and connections
Fig. 1 Front panel
B C A
E F G H I
K
M
L
J
D
HS-IPA1 / User manual
21 • Controls and connections
1.2 List of controls and rear connections
A • ON / OFF switch
B • Mains socket
Mains power connector. Slot for connection of the
network cable according to IEC / CEE 22. 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, the type and
extent coincides with that indicated on the rear panel.
Attention:
For any reason the user must replace the fuse, it is a task
reserved for qualied personnel in the service centers.
D • IN 1: RCA connection sockets
Analog Input socket for signal IN 1 channel right / left.
E • IN 2 [PHONO] : RCA connection sockets
Analog Input socket for signal IN 2 channel right / left.
F • IN 3: RCA connection sockets
Analog Input socket for signal IN 3 channel right / left.
G • IN 4 [REC OUT]: RCA connection sockets
Analog Input socket for signal IN 4 channel right / left.
Can be set as output by system menu.
See section 2.7.1, “4 • Out 4” at page 5.
H • Speakers output [positive] left channel
Output jack for positive power.
I • Speakers output [negative] left channel
Output jack for negative power.
J • Speakers output [negative] right channel
Output jack for negative power.
K • Speakers output [positive] right channel
Output jack for positive power.
L • HEADPHONES: 6.3mm jack connection plug
(only if HEADPHONE option is mounted)
Analog output socket for headphones. 16-600 Ohm.
M • GND: Phono GND
Ground screw for turntable.
HS-IPA1 DAC option only features
N • Digital IN 1: USB “B Type” connection socket
Input socket for digital signal 1.
O • Digital IN 2: S/PDIF TOSLINK plug connection socket
Input socket for digital signal 2.
P • Digital IN 3: S/PDIF RCA plug connection socket
Input socket for digital signal 3.
Q • Digital IN 4: S/PDIF RCA plug connection socket
Input socket for digital signal 4.
R • Digital IN 5: S/PDIF TOSLINK plug connection socket
Input socket for digital signal 5.
ACB
DN O R E M F G
H LIJK
P Q
Fig. 2 Rear panel
HS-IPA1 / User manual 1 • Controls and connections 3
1.3 Technical notes
1.3.1 • Technical notes about inputs
The HS-IPA1 has 4 analog inputs by default and 5 set of
digital inputs only if DAC board is tted
The input IN 2, as well as being a normal input line, can
be congured as a phono stage input for either MM / MC
The MC stage load can be adjusted internally using the
supplied phono stage manual.
The input IN 4, as well as being a normal input line, can
also be switched to a xed REC OUT.
Attention: when the IN4 is congured as output, be sure
to NOT CONNECT any INPUT to the IN 4, only use it as
output.
See next section, 1.3.2 .
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 cables used are of a low quality,
the resulting sound will be much less than the potential
of the device.
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 cartridges.
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;
• The HS-IPA1 amplier has an internal DC lter in
order to eliminate the DC oset on the mains, normally
this feature is disabled. To activate this option contact
NORMA or your supplier.
HS-IPA1 / 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, also
contains controls for volume setting.
On the remote control is also present the MUTE key
that completely mute the output signal. This condition is
indicated by the ashing of the POWER indicator to high
intensity.
Some of the controls on the remote IR may be inactive,
reserved for future uses.
See Remote controls manual at page 25.
2.2 Turn ON / OFF
The HS series ampliers 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 amplier is o.
2.2.2 • Power OFF to standby
Placing the rear control switch in the ON position, the
amplier is active in STAND-BY POWER indicator on the
front panel will be on. This condition can be maintained
indenitely, the amplication stages are not powered,
but the amplier 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 action on the front POWER button or
IR remote POWER button. In both cases, initially there is
a countdown for a period of time equal to 10 seconds.
Then the amplier is ready to operate.
2.2.4 • Power ON to standby
To put the amp in STANDBY mode, press the POWER
button on the front panel or on the remote control, the
indicator will turn on.
2.2.5 • Standby to power OFF:
To POWER OFF the amplier, 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 amplier into STANDBY.
2.2.6 • Attention
For safety reasons, after the unit is turned from
POWER ON to STAND-BY mode, it is not possible to
turn it on again for 30 seconds.
2.3 Protection circuit
Inside the amplier HS-IPA1 are present some
sophisticated protection circuits that control the
temperature of the heatsinks, the presence of any oset
current exceeding the limit value and the abnormal
supply of output current (short circuit).
2.3.1 • Thermal protection
In case of intervention of thermal protection amplier
will automatically shuts down and the power indicator
goes completely o. You can not in any way turn it back
on until the temperature has returned at the correct
value, and this will be indicated by the restart of the
stand-by light. Only then you can repeat the POWER ON
procedure. The amplier will not automatically turn on.
2.3.2 • DC oset protection
In case of protections for the presence of DC component
output, the amplier turns o and the power indicator
switches to low intensity ashing. You can turn it back on
only after switching o the appliance at the rear switch
and leaving it o for at least 10 seconds.
If the fault persists, the amplier would run again in
terms of protection. In this case, try to disconnect all
signal cables and repeat the process of restarting the
unit. Should the situation persist, contact your service
representative.
2.4 Inputs selection
With the device turned on, you can select the desired
input both via RC and front panel. On the remote control,
press the IN button, then select the desired input with
the SEL + and SEL – buttons, then press OK.
On the front panel, press the ANALOG or DIGITAL buttons,
select the desired input with the arrows, then press OK.
2.5 Listening volume control
The listening volume can be adjusted using the function
keys VOL - / VOL + on the front panel or on the remote.
2.6 Connecting the speakers
The speakers are connected by cables to the SPEAKERS
OUTPUT sockets. cables must be of adequate quality (at
least 4 mm ²).
In addition:
• The connection cables must have the same length for
both channels even if the distance between the speakers
and the amplier is dierent;
• The cables must not be piled up or rolled;
• Safety regulations require that the cables must not be
HS-IPA1 / User manual 2 • Start to use 5
pushed into or wrapped around the 4mm banana plug
sockets of the amplier;
• In order to not overload the amplier, the speaker
impedance cannot be lower than 4 ohms;
• The speakers should not be connected in parallel with
each other.
Caution:
To prevent damage, each connection must be carried
out when the appliance is switched o and unplugged
from the mains.
2.7 Functional settings, set command
With the MENU (SET on RC) 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 settings “nested” within the
MENU function. Once you press MENU you can access
the following conguration menus using the SEL + / SEL -
buttons.
1 • System settings SYS SET
2 • Analog settings ANLG SET
3 • Digital settings DIGI SET
(only if DAC board is tted).
2.7.1 • System Settings SYS SET
This section lets you customize all the characteristics of
your device. You will nd the submenus RESUME, LIGHT,
DISPLAY and OUT4.
1 • Resume: resu
Stores the current settings and makes it default.
2 • Light: LIgh
Adjusts display brightness between values 30, 50, 70,100.
3 • Display: DISP
When , enables display to turn o automatically after
a few seconds without commands.
4 • Out 4: UT4
When N, the IN 4 becomes an output (xed level). When
, the IN 4 is a standard input.
Attention:
When enabled, be sure to NOT CONNECT any INPUT
to the IN 4, only use it as output.
5 • Easy: Easy
When N, the amplier works with a reduced number
of settings, allowing greater ease of use. If you want to
access to all the parameters disable this function.
2.7.2 • Analog Settings ANLG SET
This sections lets you set the volume levels for each set of
inputs (digital if present, analog 1 - 4).
If you leave the setting in OFF, when selecting an input
it will keep the current volume. If you dene a specic
value, when selecting the input, the unit will automatically
turn the volume control in that position.
In everyone of these section you will nd two submenus,
LINE and HEAD.
LINE
Volume:
Can be set between 5 and 45 or in position.
HEAD
Volume:
Can be set between 5 and 45 or in position.
Note:
The HEAD settings are present only if the HEAD option is
mounted.
The VOLUME option sets a reference value for the input,
to easily handle sources with dierent output levels
without constantly adjusting the volume manually. In
OFF mode it doesn’t manage the volume storing.
2.7.3 • Digital Settings DIGI SET
Not present on preliminary manual and units.
2.8 Display modes
When outside the setting menu, the display can show
two dierent kinds of information:
• As standard, it will show the input in use and the current
volume;
• When a volume button is pressed, it shows VOL and the
current volume.
2.9 Volume control
To adjust the volume, the user has two possibilities, by
using the volume control on the remote, or by using the
SEL + / SEL - buttons. Every time you act on the volume
control, the display shows the attenuation value.
Note on volume control and display:
In order to be more useful to the user, the volume indication is
converted in decibels of attenuation, between approximately
0 and - 51 dB. Anyway, because of this scale conversion
process, there may be some visualization imprecisions (for
example, the maximum volume may stop at - 2 / - 1 dB).
The user should not be concerned by this, as the whole
attenuation range oered by the volume control (from 0 to
around - 80 dB) is eectively used.
HS-IPA1 / User manual
6 3 • Maintenance
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.
Aux overview
HS-IPA1
RISK OF ELECTRIC SHOCK
DO NOT OPEN
WARNING:
As indicated in the safety manual, we remind you that the actions
described below must be performed only by highly qualified personnel.
There are very high and dangerous electrical voltages inside the device.
It also exists at the possibility of damaging the product and the other
components connected to it in case of wrong operations. We are not
responsible for any type of injury or damage due to incorrect operation.
8 4 • Aux overview HS-IPA1 / Aux overview
4 • Aux overview
Location
Fuse 1F2,5 AFast
Value Type
Fuse specifications
J1A J1B
Fuse 1Fuse 1Fuse 1Fuse 1
Jumper and fuse position
Fuse specications
Fig. Aux 1
Tab. Aux 1
J1A J1B
FILTDIR
Jumper positionFig. Aux 2 AC power supply DC lter settingFig. Aux 3
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