Hill Audio ZPR-3520 User manual

RevA 10-2015

Welcome
Thank you for choosing Hill Audio for your sound system. To make sure that this product meets your
expectations and provides long-term, reliable performance, please read and follow this instruction
manual carefully.
Important safety instructions
Read these instructions and all markings on the product. Keep these instructions.
Heed all warnings and instructions, both in this manual and on the product.
Clean only with a dry cloth. Unplug from AC supply before cleaning.
Do not use this product near water and avoid any exposure to water.
Before connecting this product to any AC supply, make sure to check whether the AC mains vol-
tage and frequency match the indication on the product and its packaging.
Only connect this product to an AC supply with sufficient power handling, protective earth con-
nection, ground-fault (earth-fault) protection and overload protection.
Disconnect the product from the AC supply during thunderstorms or longer periods of being
unused.
Make sure any heat sink or other cooling surface, or any air convection slot , is exposed sufficiently
to free air circulation and is not blocked.
Do not operate this product in environmental temperatures exceeding 35 degrees Celsius and/or
85% relative humidity.
Position the product in a safe and stable place for operation, out of reach of unauthorized persons.
Make sure any cable connections to and from the product are neither subject to potentially des-
tructive mechanical impact nor present any risk of stumbling or other accident risk to people.
Audio equipment may generate sound pressure levels sufficient to cause permanent hearing
damage to persons. Always start up at low volume settings and avoid prolonged exposure to sound
pressure levels exceeding 90 dB.
Do not open this product for service purposes. There are no user-serviceable parts inside.
Warranty will be void in any case of unauthorized service by the user or other not authorized persons.
Take any precaution required by local law, applicable regulations or good business practice to avoid
injury of people or material damage by use of this product.
Explanation of symbols used in this manual and on the product:
DANGER!
Safety hazard.
Risk of injury or death.
WARNING!
Fire hazard.
WARNING!
Hazardous voltage.
Risk of severe or fatal
electric shock.
ATTENTION!
Read manual
before installation
and operation.
Manual Language
UK This user manual is written in English. For other languages, visit www.hill-audio.com
FR Ce guide est écrit en anglais. Pour les autres langues, visitez: www.hill-audio.com
DE Diese Anleitung ist in Englisch verfasst. Für andere Sprachen: www.hill-audio.com
ES Este manual está escrito en Inglés. Para otros idiomas, visite: www.hill-audio.com
PT Este manual está escrito em Inglês. Para outros idiomas, visite: www.hill-audio.com
IT Questo manuale è scritto in inglese. Per altre lingue, visitare: www.hill-audio.com
PAGE 1
USER MANUAL - ZPR3520 3-ZONE MIXER

PAGE 2
USER MANUAL - ZPR3520 3-ZONE MIXER
Health advice
This unit produces and absorbs electromagnetic radiation. The strength of radiation and the sensitiv-
ity for disturbing interference matches the CE and FCC requirements. A corresponding sign is printed
on the backside of the unit. Any change or modification may affect the behavior of the unit concerning
electromagnetic radiation, with the CE requirements eventually not to be met any more. The manufac-
turer takes no responsibility in this case.
Functional advice
This unit is immune to the presence of electromagnetic disturbances – both conducted and radiated
- up to a certain level. Under peak conditions, the unit is classified to show a “class C” performance
criteria and may encounter temporary degradation or loss of function which may need manual help
to recover. In such case, disconnect the AC power from the unit and reconnect it again to recover.
Environmental advice
This unit is built to conform to the ROHS standards and the WEEE directive 2002/96/EC of the
European Parliament and of the Council of the European Union. Under these regulations, the product
shall not be discarded into regular garbage at the end of its life, but shall be returned to authorized
recycling stations.
Unpacking
Please check that the box contains the following items:
Main parts: 1 pc. ZPR3520 main unit
1 pc. Mains cable
1 pc. Operation manual
If any part is missing, please contact your dealer immediately for replacement.
Warning
After unpacking, and before plugging the AC cord in the wall outlet, check whether the
AC mains voltage and frequency is the same as this product is specified for (see rear
panel of product). Whenever the specified voltage or your AC plug should not match
the local conditions, do NOT plug the AC cord into the wall outlet and contact your
dealer immediately.
Description
The ZPR3520 3-Zone Preamp-Mixer is a preamplifier with 2 microphone inputs, 6 stereo inputs,
adjustable talk-over and three balanced zone outputs, two in stereo and one in mono configuration.
The numerous installation-specific features make this unit a very versatile choice in any environment
from leisure to commercial applications, where music zoning with different sources need to be com-
bined with voice announcements.
AC mains voltage setting
If the AC mains voltage of your
power outlet and the setting of the
AC supply voltage on your unit do
not match, contact your dealer,
contractor or a qualified service
workshop to change the setting of
the AC voltage selector. The AC
voltage selector switch is located on
the side panel of the unit, close to
the AC inlet.
AC Voltage
Selector Switch

PAGE 3
1
15 14
2120
18
22
9
10
13
19
17
8
11
12
16
Controls - Front
Output Section
Input Section
USER MANUAL - ZPR3520 3-ZONE MIXER
Controls and Connections
Connections - Rear
29
Input Section
Output Section
2
3
4
7
6
5 2
3
4
7
6
5
2
3
4
7
6
5
23 24 25
2627
28
23 24 25
2627 28
23 24 25
2627

PAGE 4
USER MANUAL - ZPR3520 3-ZONE MIXER
Functional Description
The ZPR3520 is a zoning mixer which allows to connect up to two microphones and 6 stereo
sources. The microphones have a dedicated equalizer and an automatic talkover function which
provides microphone priority over program material if required. One of the stereo inputs is balanced,
specifically catering for connections to the output of a stage mixer, thus making the ZPR3520 a
perfect centre piece of a small hospitality venue sound system with occasional live music. The unit has
three zone outputs to which any of the stereo inputs can be routed, and the microphones can be
included or excluded from the zone output signals. Remote volume control is available via optional
ZCP10A wall panels, and remote muting and emergency signal replay facilitate the use in installed
sound systems.
2
1
3
4
9
10
7
8
6
5
AC inlet and fuse holder. Use the supplied AC cord to connect the unit to AC mains. Make sure
voltage and frequency stated and set on the unit comply with your local AC supply. The fuse
can be accessed by the small drawer at the AC inlet. To change the fuse, unplug the AC cord
first, pull out the fuse drawer and replace the fuse ONLY with a fuse of SAME voltage and
rating. If the fuse blows again after replacement, hand over the unit to qualified service person-
nel.
Zone outputs. These are balanced stereo ¼’’ TRS outputs carrying the zone output signal
controlled by the zone volume controls (24 & 25). The zone outputs are stereo for zone A and
B, and mono for zone C.
Zone outputs. These are a balanced 3.5mm terminal block outputs carrying the same signal
as output (2). The zone outputs are stereo for zone A and B, and mono for zone C.
Equalizer for Zone outputs. This is a 2-band stereo equalizer to adjust the frequency response
of the output. Adjustments shall be made with a small screw driver. Note that the total angle
is 300 degrees; do not apply excessive force with the screw driver.
Talkover adjustment for zone outputs. These controls allow to set the amount of damping
which is applied to the zone’s music signal when the microphone is spoken into - provided that
the microphone is not excluded from the zone via the relative switches (26).
Being fully turned
clockwise, once speaking into the microphone, the program signal is completely suppressed.
Being turned fully counter-clockwise, the talkover function is off.
Adjustments shall be made
with a small screw driver. Note that the total angle is 300 degrees; do not apply excessive
force with the screw driver.
Volume remote control inputs. These are 5.0mm terminal block inputs for connecting external
passive wall control panels of the ZCP-10 type. See chapter “remote volume control” for more
information. Note that this input is only enabled when the remote-enable switch is pressed (7).
Remote Enable switches. Pressing these switches enables the relative volume control remote
input (6).
Music Mute input. This is a terminal block input which allows to remotely mute all output
signals by simply shortening the contacts.
Emergency input. This is an auto-sensing, balanced terminal block input which allows the
connection to an emergency evacuation system. Once a signal is present on this input, all
output signals (Stereo Master, Zone) will be muted and the emergency message/signal from
this input will become audible instead. Please note that the unit can be set to include or exclude
the microphone signals from this muting process, please see section “microphone routing
setting”.
Emergency volume control. This control allows to set the level with which the signal fed into the
emergency input (9) will be replayed at the three zone outputs (2) and (3).

PAGE 5
11
FOH input. This is a ¼’’ TRS balanced stereo input specifically designed to allow the connection
of the output of a stage mixer, in order to use the connected sound system for the replay of
the stage mixer’s signal. This is useful in applications where apart from stereo source replay
also live music is performed over the same sound system. The FOH input is routed to input
channel 6.
Line inputs. These RCA connectors provide inputs for line-level signals to the assigned chan-
nels.
GAIN control for input channels. This allows the sensitivity (input gain) for every line input to be
adjusted, so that sources of different output level can be replayed at properly balanced levels.
Microphone inputs. These are balanced ¼” TRS connectors, which can be internally set to
either carry phantom power or not, thus these inputs can be used both with condenser and
dynamic microphones. Please see section “microphone phantom power setting”. The signal of
these inputs is controlled by the front panel controls (16)/(17)/(18)/(19).
GAIN control for microphone inputs. This allows the sensitivity (input gain) for every micro-
phone input to be adjusted, so that microphones of different output levels can be used.
Microphone ON/OFF switches for MIC1 and MIC2. These switches enable/disable the
relative microphone.
Level control for microphone inputs. Allow the individual adjustments of the levels for MIC1 and
MIC2.
Microphone Equalizer. Allows the adjustment of the tonal balance for the microphone inputs in
two voice-specific frequency bands with an adjustment range of ±12dB. Please note the
setting will affect both microphone inputs simultaneously.
Talkover ON/OFF switch. Enables or disables the automatic microphone priority. Note the the
amount of damping applied to the program material is determined by the rear-side damping
controls (5), separately for each output zone. Dpending on the settings chosen on these rear-
side controls, it may hence be possible that even if this switch is pressed (”ON”), no automatic
microphone priority is applied to a zone, because the damping may be set fully counter-
clockwise.
AUX Input for INPUT1. This is a 3.5mm Mini-TRS stereo socket which allows to connect
sources like MP3 players etc. without removing the unit from its mounting position. Note that
to route this input socket to INPUT1, the routing switch (21), must be pressed. To listen to any
connected source, the INPUT1 must then be routed to the respective output zones via the
switches (23).
ROUTING switch for AUX input. This switch decided whether the rear-side RCA socket (12) or
the front-side TRS socket (20) are used as the source for INPUT1. In released position, the
rear-side RCA socket is used, in pressed position the front-side TRS socket (2) is used.
ROUTING switch for FOH input. This toggles the INPUT4 between the relative rear-side RCA
sockets (12) and the rear-side TRS sockets of the FOH input (11). In released position, the
rear-side RCA socket is used, in pressed position the rear-side TRS sockets of the FOH input
(11) are used.
Zone source selection switch. This rotary switch allows to use any of the individual source
signals at the Inputs 1/2/3/4/5 to be used as a source signal for the relative Zone output.
This may include the front-panel 3.5mm TRS AUX input (20) and the rear-panel TRS FOH input
(11) depending on the setting of the routing switches (21) and (22).
15
14
20
18
13
19
17
12
16
21
22
23
USER MANUAL - ZPR3520 3-ZONE MIXER

28
27
26
25
29
PAGE 6
Zone Music Level Control. This control determines the total volume of a relative zone output’s
program, including both the music program and the microphone signal if the latter is enabled.
The microphone share in the total signal can be set independently by control (25).
Zone Microphone Level Control. This control determines the volume of the microphone part of
the relative zone output’s program, in relation to the music level set by (24), meaning the
amount of microphone signal added to the music program is set by this control. Note that the
microphone(s) will only be audible if not being excluded from the respective zone by the switch
(26) and if the microphone settings made by the controls (16) & (17) in the microphone
section provide a suitable signal.
Microphone Exclusion Switch. Pressing this switch will exclude the microphone signal(s) from
the relative zone. The microphone volume control (25) is disabled in this case. Please note that
since the automatic priority circuit works independently, the zone’s music program level might
still be affected when the microphone is spoken into, even if the microphone signal itself is
excluded from the zone by pressing this switch. It is hence recommended that in case that the
microphone signal(s) is permamently to be excluded from a zone output, that the respective
damping control on the rear-panel is set to “off” (fully counterclockwise) for that zone.
Zone Output Level Meter. Displays the output level of the respective zone output.
Zone Mono Switch (only for Zones A and B). Switches the stereo zone output to mono. Note
that this switch is only available in the stereo zones A and B, since zone C is mono anyway.
Power switch. Switches the unit on and off respectively.
24
USER MANUAL - ZPR3520 3-ZONE MIXER
Remote Volume Control
The ZPR3520 allows to use an external wall-mounted passive volume controller to be used for
remote volume control. These wall-mounted volume controllers shall be of the ZCP-10A type and
need to be connected as per below wiring diagram to the remote volume control ports (6) on the
unit’s rear-panel. After correct wiring, pressing the remote volume enable switch on the rear panel
(7) will enable the remote volume controller in lieu of the on-board volume control (24), which is then
disabled.
ZCP10A
WALL PANEL
GND RV VCC

PAGE 7
Internal Settings
WARNING - DANGER
Changing the internal settings requires to open the unit. Prior to opening the unit, the
unit shall be disconnected from any AC supply. Any work on an open unit shall be expe-
dited only by qualified, certified personnel.
USER MANUAL - ZPR3520 3-ZONE MIXER
Mic 1
phantom power
OFFONON OFF
Mic 2 phantom power
JP105 JP104
EmergencyMIC setting
ONOFF
JP807 JP604
ONOFF
EmergencyMIC setting
JP604
ONOFF
Emergency
MIC setting
JP704
EmergencyMIC setting
ONOFF
JP704
Emergency
MIC setting
ONOFF
Emergency
MIC setting
ON
OFF
JP807
A. Microphone High Pass Filters and Microphone emergency setting
For each of the two microphone inputs, a 100Hz high pass filter can be optionally engaged.
Further,the routing of connected microphones in the case of an external emergency signal muting
the unit’s outputs can be determined via an internal jumper, which can be set to either mute the
connected microphones (”off”) as well, or to to keep them active (so that aside of a emergency mes-
sage broadcasted, additional instructions can be given by a local microphone - “on”). To make the
setting, locate and set the jumpers on the front PCB as show below.
B. Microphone phantom power setting
In case condenser microphones are to be used instead of dynamic ones, the supply of phantom
power to the microphones inputs might be required. This can be activated by setting the jumpers on
the rear input PCB accordingly. There are further jumpers available inside the unit, labelled “emer-
gency mic setting” on the main PCB. These need to remain set at the factory default position, “OFF”.
JP306
HPF filter
Mic
emergency
OFF
ON
OFF ON
JP304
HPF filter
ONOFF
JP305
PHANTOM
POWER
JUMPERS:
ON
OFF
(DEFAULT)
JUMPERS:
ON
OFF
(DEFAULT)

PAGE 8
USER MANUAL - ZPR3520 3-ZONE MIXER
Operation
A. Connections
For connecting this unit to AC mains, please note:
Check whether the AC mains voltage and frequency is the same as this product is specified for (see
rear panel of product). Whenever the specified voltage or your AC plug should not match the local
conditions, do NOT plug the AC cord into the wall outlet and contact you dealer immediately.
Do not operate this unit without the line cord earth ground connected. To do so may increase the
risk of electric shock and increase line cord conducted emissions.
For making audio signal connections, always remember that good and reliable connections are a
basic requirement for good sound and reliable operation. Bad soldering of cables can result in inter-
mittent audio signals or temporarily lost ground connections, hence always use good cables. In case
of doubt about making proper connections, please check the standard pin assignments required for
proper operation in the following section of this manual.
B. Powering up
Following a proper power-up sequence protects your equipment – specifically speakers – and your
ears. Follow the below procedure:
Turn down all output volume controls of any equipment in your audio system.
Switch on your audio sources first (Tuners, CD Players, PC’s with soundcards, Tapedecks, etc.)
Switch on the audio mixer
Switch on any audio processor between the mixer and the amplifier(s) [if any].
Switch on the amplifier(s).
Turn up the audio level on your sources if such controls are provided.
Set the audio output of your mixer to a low level.
Set the audio output of any audio processor between the mixer and the amplifier(s) to a medium
level [if any such processors].
Turn up the volume controls of your amplifier(s) slowly.
Make adjustments to all volume settings as needed.
For switching off, follow the inverse sequence – always switch off your amplifier(s) first, then any
processors between mixer and amplifier(s), then the mixer, then the sources.
C. Use
Apart from using good equipment, good sound comes from using it correctly. Level setting mistakes
are one of the common reasons why even good equipment may not perform as desired. For setting
levels, please be reminded that two guidelines need to be followed:
Avoid distortion by leaving some headroom. Never overrun any audio-equipment’s inputs. Level
meters and displays allow you to make sure that signals do not enter critical levels.
Avoid unnecessary amplification by using as little attenuation as possible. For example, if you turn
down the input gain of a mixer to minimum, and then increase the main output of the mixer to maxi
mum to drive your amplifier properly, you will create unnecessary noise, as you first dispose of some
already existing signal level, and then later apply amplification (tainted with noise) to make it up.
Obviously, these two requirements are marking a levelling window that the operator must match to
achieve a good sound with as little distortion and noise as possible.
WARNING - HEALTH RISK
Excessive volume levels on headphones or other sound systems may cause hearing
damage. Always turn the volume control to minimum when you switch the unit on, and
avoid prolonged exposure to sound pressure levels exceeding 90dB.

PAGE 9
Connections
The ZPR series mixers use the below connector types, for which the pin assignment must comply
with the following specification. Always make sure to use good connectors and cables to ensure
proper operation. Balanced connections are to be preferred over unbalanced connections where
applicable and feasible. Avoid unbalanced connections exceeding 2m of cable length.
1-conductor shielded cable
(for unbalanced connections)
red
shield
2-conductor shielded cable
(for balanced connections)
red
shield
black
tip
sleeve
tip
sleeve
red = tip
shield = sleeve
red = tip
black = sleeve
shield = uncon.
3
1
2plug
side 3
1
2
cable
side
red = 2
black = 3
shield = 1
red = 2
shield = 1+3
2
3
1
3
1
2
3
1
2
cable
side
plug
side
red = 2
black = 3
shield = 1
red = 2
shield = 1+3
tip
sleeve
ring tip
sleeve
ring
red = tip
shield = sleeve+ring
red = tip
black = ring
shield = sleeve
tip
sleeve
tip
sleeve
ring ring
red = tip
shield = sleeve+ring
red = tip
black = ring
shield = sleeve
tip
sleeve
tip
sleeve
red = tip
shield = sleeve
red = tip
black = sleeve
shield = uncon.
XLR male
XLR female
6.35mm TRS-stereo
6.35mm TRS-mono
3.5mm TRS-stereo
RCA
CABLE Types
Structure Balanced
connection
Unbalanced
connection
USER MANUAL - ZPR3520 3-ZONE MIXER
Terminal Plug
red = 1
black = 2
shield = 3
red = 1
shield = 2+3

PAGE 10
Technical Specifications
Block Diagram
Maintenance and warranty
While we have chosen the best components to make this product as rugged and reliable as possible, some parts in audio
products (potentiometers, faders, switches) are subject to wear which is a matter of operation cycles, and not of time.
While providing a full time-based warranty according to the country’s of purchase requirements on the function of the
electronic circuitry, we hence have to limit the warranty on such electro-mechanical parts to 90 days from the date of
purchase.
In many cases, malfunction of electro-mechanical parts occurs due to dust contamination, which may require cleaning of
such parts. As the inside of such parts is not accessible, a common practice is to use cleaning fluids in the shape of
sprays. Please be reminded that many of such fluids contain chemicals which may wash away the dust but at the same
time corrode or damage contact surface and may cause cosmetic damage to other parts. We hence explicitly exclude
any claims for exchange of damaged part due to mechanical or chemical impact.
USER MANUAL - ZPR3520 3-ZONE MIXER
L
R
CH1 LINE
RCA JACK
1 G
3 R
5 RS
4 TS
2 T
CH1 AUX
3.5MM TRS JACK
AMP
CH1 GAIN
AMP
CH1 GAIN
L
R
CH2 LINE
RCA JACK AMP
CH2 GAIN
AMP
CH2 GAIN
1 G
3 R
5 RS
4 TS
2 T
MIC 1 INPUT
6.3MM TRS JACK
1 G
3 R
5 RS
4 TS
2 T
MIC 2 INPUT
6.3MM TRS JACK
+
-
AMP
+
-
AMP
AMP
AMP
MIC 1 ON SW
MIC 2 ON SW
AMP
MIC2 Level
AMP
HI LOW
MIC EQ
T/O DAMP ING
T/O DAMP ING
G
DS
G
D S
HI LOW
MAS1 EQ
AMP
AMP
1 G
3 R
5 RS
4 TS
2 T
MAS1 BAL-L
6.3MM TRS JACK
1 G
3 R
5 RS
4 TS
2 T
MAS1 BAL-R
6.3MM TRS JACK
1 G
2 -
3 +
4 -
5 +
MAS1 BAL
SCREWTERMINAL
1 G
3 R
5 RS
4 TS
2 T
MAS2 BAL-L
6.3MM TRS JACK
1 G
3 R
5 RS
4 TS
2 T
MAS2 BAL-R
6.3MM TRS JACK
1 G
2 -
3 +
4 -
5 +
MAS2 BAL
SCREWTERMINAL
+
AMP
+
AMP
-
AMP
-
AMP
+
AMP
+
AMP
-
AMP
-
AMP
3 +
2 -
1 G
EMERGENCY INPUT
SCREW TERMINAL
2 +
1 G
OUTPUT MUTE
SCREW TERMINAL
+
-
AMP
EMERGENCY LEVEL
AMP
MUTE
EMERGENCY
DC DETECTOR
AMP
AMP
1 2 3
MUSIC
MUTE
DC DETECTOR
AMP
AMP
+VCC
connect pin1,2 emergencywith mic
connect pin2,3 emergency withoutmic
G
D S
G
D S
AMP
MIC 1 GAIN
AMP
MIC 2 GAIN
MIC1 Level
L
R
CH3 LINE
RCA JACK AMP
CH3 GAIN
AMP
CH3 GAIN
CH1 OR AUXselection
L
R
CH4 LINE
RCA JACK AMP
CH4 GAIN
AMP
CH4 GAIN
1 G
3 R
5 RS
4 TS
2 T
FOHL
6.3MM TRS JACK
1 G
3 R
5 RS
4 TS
2 T
FOHR
6.3MM TRS JACK
+
-
AMP
+
-
AMP
CH4OR FOH selection
L
R
CH5 LINE
RCA JACK
AMP
AMP
AMP
AMP
CH3 R CH4 L CH4 R CH1 R CH2 L CH2 R CH3 L CH1 MONO CH2 MONO CH3 MONO CH4 MONO CH5 MONO CH1 L
2
3
1
5
4
A
Channel input selection
8
9
7
6
10
B
Channelinput selection
MIC1 LEVEL
LED 5PC S
VCA
VCA
Remote level ON/OFF
Remotelevel
3 +
2 -
1 G
REMOTELEVEL
SCREW TERMINAL
AMP
LED 5PC S
AMP
MIC1 ON/OFF
T/O DAMP ING
T/O DAMP ING
AMP
AMP
2
3
1
5
4
A
Channelinput selection
8
9
7
6
10
B
Channel input selection
MIC2 LEVEL
VCA
VCA
Remote level ON/OFF
Remotelevel
3 +
2 -
1 G
REMOTELEVEL
SCREWTERMINAL
MIC2 ON/OFF
HI LOW
MAS2 EQ
MIC
1 G
3 R
5 RS
4 TS
2 T
MAS3 BAL-L
6.3MM TRS JACK
+
AMP
-
AMP
LED 5PC S
AMP
T/O DAMP ING
AMP
MIC3 LEVEL
VCA
Remote level ON/OFF
Remotelevel
3 +
2 -
1 G
REMOTELEVEL
SCREW TERMINAL
MIC3 ON/OFF
6
3
2
4
5
1
Channelinput selection
3 +
2 -
1 G
MAS3 BAL
SCREWTERMINAL
HI LOW
MAS3 EQ
+VCC
+VCC
+VCC
Talko ver ON/OFF
MONO
MONO
MAS1 LEVEL
AMP
AMP
MAS2 LEVEL
AMP
AMP
1 2 3
G
D S
1 2 3
G
DS
1 2 3
AMP
G
DS
MAS3 LEVEL
PowerON/OFF MUTE
1 2 3
Phantompower
100 Hz
100HZ HPF
100 Hz
100HZ HPF
1 2 3
Phantompower
1 2 3
1 2 3
Signal/Noise..............................................>82dB (Line)
Crosstalk Damping...................................＞65dB (Line)
THD......................................................＜0.05% (Line)
Frequency response.................................20Hz – 20 kHz
AC IN (EU version)..........................AC220-250V~ 50Hz
Power consumption.......................................max. 18W
Dimensions............................W483xH44.5xD183.5mm
Weight.............................................................. 2.2 kg

EC Declaration of Conformity
We declare on our own responsibility, that the equipment
Hill Audio ZPR3520
is in conformity with the following directives and standards or regulations:
EMC Directive 2004/108/EC
EN55103-1:2009 (Emissions)
EN55103-2:2009 (Immunity)
EN61000-3-2:2006 + A1:2009 + A2:2009
EN61000-3-3:2008
LVD Directive 2006/95/EC
EN60065:2002 A1:2006 + A11:2008 + A2:2010
ROHS Directive 2002/95/EC
and is marked as follows:
Shoeburyness, 23. October 2015
Authorized SignaturePlace and date of issuing
www.hill-audio.com
Hill Audio products are developed, manufactured and distributed by
Adelto Technologies
Unit 2A Springfield Road, Springfield Industrial Estate, Burnham-on-Crouch, Essex CM08UA, England
www.adelto.com | [email protected]
Manufacturer: Adelto Technologies Limited
Address: Unit 2A Springfield Road, Springfield Industrial Estate
Burnham-on-Crouch, Essex CM08UA, England