Ampetronic C Series System manual

C Series
Installation Handbook
& User Guide
www.ampetronic.com

Ampetronic C Series Installation Handbook & User Guide
Page 2

Ampetronic C Series Installation Handbook & User Guide Page 3
CONTENTS
Box Contents � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 4
1� SAFETY � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 4
2� INTRODUCTION � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 5
3� INSTALLATION � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 6
Location ������������������ � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 6
Tools and Equipment ������� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 7
System Requirements ������ � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 7
4� BLOCK DIAGRAM � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 7
5� QUICK START GUIDE� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 8
Operation ����������������� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 8
Factory Settings ����������� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 8
Control Interfaces ���������� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 8
Start Up Tests ������������� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 9
Initial Setting up ����������� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 9
6� FEATURES OVERVIEW � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 10
7� FRONT PANEL MENU GUIDE � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 12
Menu Structure ������������ � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 12
Home screen display ������� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 13
Value screen displays������� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 14
Loop Current �������������� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 14
Current O󰀨set (MultiLoop models only) � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 15
Metal Loss ���������������� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 15
Test signals ��������������� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 16
Status �������������������� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 16
Settings sub-menu ��������� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 16
Additional features ��������� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 17
8� ETHERNET INTERFACE - Network versions only� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 18
Setting up the Ethernet Interface � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 18
Audio Settings Tab ��������� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 20
Network Cong Tab �������� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 21
9� EMAIL NOTIFICATIONS � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 25
10� USING A WIRELESS ROUTER� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 26
Using a wireless router when a network is not available � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 26
Using the C Series drivers with the TP-Link Nano Router � � � � � � � � � � � � � � � � � � � � � � � � � 26
Wireless Network Troubleshooting � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 27
11� REMOTE MONITORING & CONTROL � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 28
12� TROUBLESHOOTING� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 29
13� UPDATING FIRMWARE & WEB INTERFACE � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 32
14� ACCESSORIES � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 32
15� TECHNICAL SPECIFICATIONS to IEC 62489-1 Standard � � � � � � � � � � � � � � � � � � � � � � � � � � 33
16� GLOSSARY OF TERMS � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 36
17� WARRANTY� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 38

Ampetronic C Series Installation Handbook & User Guide
Page 4
This symbol is used to alert the user to important operating or maintenance instructions�
The Lightning bolt triangle is used to alert the user to the risk of electric shock�
仅适用于海拔2000m以下地区安全使用 - Only for use up to altitudes of 2000m
 仅适用于费热带气候条件下安全使用- Only for use in non-tropical climates
1. SAFETY
1. It is important to read these instructions, and to follow them.
2. Keep this instruction manual in an accessible place.
3. Clean only with a dry cloth. Cleaning uids may a󰀨ect the equipment.
4. Do not block any ventilation openings. Install in accordance with the manufacturer’s
instructions.
5. Do not install this equipment near any heat sources such as radiators, heating vents or other
apparatus that produces heat.
6. WARNING – THIS APPARATUS MUST BE EARTHED / GROUNDED.
7. Only power cords with the correct power connector may be used to maintain safety. Cables
incorporating the UK 13A fused plug, Schuko with earthing contacts and UL approved
“grounding type” are acceptable. These must be plugged into power outlets which provide a
protective earth.
8. C10 and C14 ampliers incorporate a mains voltage switch by the power socket on the rear
of the unit. Ensure this is set accordingly to the local mains supply voltage before connecting.
Failure to do so may damage the unit and would not be covered by warranty.
9. Refer all servicing to qualied personnel. Servicing is required when the apparatus has been
damaged in any way, such as a power supply cord or plug is damaged, liquid has been spilled
or objects have fallen into the apparatus, the apparatus has been exposed to any rain or
moisture, does not operate normally or has been dropped.
10. WARNING – To reduce the risk of re or electric shock, do not expose this apparatus to
rain or moisture. The apparatus shall not be exposed to dripping or splashing and no
objects lled with liquids, such as vases, shall be placed on the apparatus.
11. Warning: Connection to a 100V line system may involve the risk of electric shock and
therefore must be carried out by an instructed or skilled person.
TO PREVENT ELECTRIC SHOCK DO NOT REMOVE THE
COVER� THERE ARE NO USER SERVICEABLE PARTS
INSIDE� REFER SERVICING TO QUALIFIED PERSONNEL
Box Contents
• 1 x C Series Driver including:
• 1 x Loop connectors (x2 for dual channel
drivers)
• 1 x DC connector
• 1 x Status relay connector (C10/14 only)
• 2 x Input connectors
• 1 x 100V line connector
• 1 x Line out connector
• 2 x 2mm steel 1U rack mount brackets
• Also includes:
• 1 x C Series quick start guide
• 1 x Power cable (region specic)
• 1 x Induction Loop Sign
• 4 x Self adhesive feet
≤2000m

Ampetronic C Series Installation Handbook & User Guide Page 5
2. INTRODUCTION
The C Series hearing loop driver range has been designed as high quality digital, networkable
single and dual loop output drivers. The range includes models intended for use with perimeter
loops and multiple loop (MultiLoop™ / Phased Array) designs, with the option to control or access
the unit via a network where required.
An array system provides a solution where a simple loop around the room perimeter will not
work. Arrays are the standard solution for buildings with metal structures or reinforcements, or for
covering large areas. Arrays can also dramatically decrease the ‘spill’ of the magnetic signal outside
of the room, allowing hearing loops to be installed in adjacent rooms, and providing an improved
level of condentiality. Arrays can also be used to change the way two loops interfere with each
other, providing ways of solving even the most complex installation problems.
Depending on a number of factors regarding the installation of the loop and the set-up of the driver,
the C Series can provide compliance with IEC 60118-4 for perimeter loop areas of up to 950m2or
phased array systems up to 3,200m2.
Ease of installation, set-up and operation have been major factors in the design, combined with
optimised performance and the freedom from R.F.I. generation.
The output channels on network equipped C Series models can be congured to be shifted in
phase by 90°, or in phase with each other, allowing the use of array systems or two separate loops
with the same signal, potentially doubling the area coverage.
The C Series drivers have two balanced inputs. These can be congured for microphone or line-
level operation. Input 2 can also be used for 100V line operation.
Dante options are available which adds a third input to the driver.
For more complex installations, you may need ancillary equipment such as microphone pre-amp(s),
adaptor(s), or signal processing units. See Accessories or contact Ampetronic for advice.
The C Series range utilises class ‘D’ drivers; meaning a 60%+ increase in energy e󰀩ciency over
previous solutions. Drivers feature a graphical user interface with intuitive menus, built in test
signals, and precise audio level adjustments. Networked models are capable of remote control and
monitoring, via email, a browser-based control panel, or standard networking protocols.
All units feature high power outputs plus ample voltage headroom, making them the most exible
solution on the market and suitable for a huge range of applications.
In another rst for high-power Class D Induction Loop drivers, installation can be performed with
total condence, as unique multi-stage ltering ensures compatibility with both other system
equipment and global EMC regulations. Networked C Series models also boast dual-slope metal
loss compensation that caters for a wide range of metal loss frequency characteristics.
AC POWER INPUT
120/230V
45 - 65Hz
RISK OF ELECTRIC SHOCK
DO NOT OPEN
ATTENTION: RISQUE DE CHOCS
ELECTRIQUE NE PAS OUVRIR
CAUTION
Induction Loop Driver
www.ampetronic.com
Designed and
made in the UK
C14-2
Serial N
o
MIC
OFF
LINE
ON
INPUT 2 INPUT 1
PHANTOM
MIC / LINE MIC / LINE
+12V
+
-
CHANNELA
CHANNEL B
ETHERNET
0.1A
DC OUTPUT
INPUT 2
100V
USB
(UPDATE ONLY)
+ + - -
LOOP OUTPUT
LOOP OUTPUT
STATUS
FUSE:T8AL
POWER:180W
+ + - -
MIC LINE
This device complies with Part 15 of the FCC rules.
Operation is subject totwo conditions.
(1) this device may not cause harmful interference, and
(2) this device must accept any interference received,
including interference that may cause undesired operation.
E114692
Electrical
Safety
AUDIO OUT
TEST USE ONLY
AC POWER INPUT
120/230V
45 - 65Hz
RISK OF ELECTRIC SHOCK
DO NOT OPEN
ATTENTION: RISQUE DE CHOCS
ELECTRIQUE NE PAS OUVRIR
CAUTION
Induction Loop Driver
www.ampetronic.com
Designed and
made in the UK
C14-2
Serial N
o
MIC
OFF
LINE
ON
INPUT 2 INPUT 1
PHANTOM
MIC / LINE MIC / LINE
+12V
+
-
CHANNELA
CHANNEL B
ETHERNET
0.1A
DC OUTPUT
INPUT 2
100V
USB
(UPDATE ONLY)
+ + - -
LOOP OUTPUT
LOOP OUTPUT
STATUS
FUSE:T8AL
POWER:180W
+ + - -
MIC LINE
This device complies with Part 15 of the FCC rules.
Operation is subject totwo conditions.
(1) this device may not cause harmful interference, and
(2) this device must accept any interference received,
including interference that may cause undesired operation.
E114692
Electrical
Safety
AUDIO OUT
TEST USE ONLY

Ampetronic C Series Installation Handbook & User Guide
Page 6
3. INSTALLATION
The following is a quick guide to installing and setting up the driver: All you need is an AC power
source, a signal source, and a suitable loop layout. Guidance is available from the Ampetronic
website or by contacting Ampetronic support.
Location
The unit may be free standing or 19” rack mountable using the rack ‘ears’ tted.
The location must provide adequate ventilation for the unit.
Contact Ampetronic for advice on cooling requirements for your installation.
a. Insert the driver into the 19” rack unit space and secure to the rails using suitable screws and
washers.
b. A󰀩x loop feed cables (which may consist of a twisted pair or star-quad congured 4-core ca-
ble) to loop connectors (supplied) and insert into Output Channel A/B socket(s) on the rear of
the driver. See Ampetronic Feed Cable Application Notes for further guidance.
c. Connect the signal inputs appropriately:
Microphones: Suitable dynamic or condenser microphone with balanced cable feed. Select
phantom power as required. Connect to INPUT 1 and INPUT 2 (with selector switches in the
appropriate position) using a 3-pole plug wired as per Connections drawing.
Line level signals: From other audio equipment such as PA system, mixing desk or CD player.
Connect to INPUT 1 and INPUT 2 (with selector switches in the appropriate position) using a
3-pole plug wired as per Connections drawing. You may use either or both inputs.
Dante: Connect a CAT5e or CAT6 cable from suitable Dante or AES67 sources, following
best practice on networked audio and Audinate recommendations.
The amplier will show in Dante controller named using the model number and MAC address
of the control Ethernet port.
Do not run input and output cables close together
(Screen)
- (Signal negative)
+ (Signal positive)
-
-
+
+
Twisted Pair or star-quad
positive and negative.

Ampetronic C Series Installation Handbook & User Guide Page 7
d. Connect AC power. See points 6, 7 and 8 in SAFETY section. For C10/C14 always check
mains voltage switch before connecting.
N�B� Do not switch the unit on until the loop outputs and signal inputs have been
properly connected�
Tools and Equipment
Small hand tools including a wire stripper, small at blade and pozi screwdrivers will be required.
A magnetic eld strength meter, Loopworks Measure App & R1 Reciever, or at minimum an
induction loop receiver is vital to check that the loop system is providing the desired level of
performance.
System Requirements
The induction loop cables are to be installed as per specic design instructions provided by
Ampetronic, where appropriate.
In order to achieve correct operation it is recommended the loop and feed resistance should be
between 0.2 and 10Ω (at DC). Values outside this may cause the Error LED to illuminate at start up
and the drivers output to be disabled or derated. Loop and feed impedance (at 1.6KHz) should be
less than the voltage capability of the driver divided by the target current required to achieve eld
strength. Values above this gure may cause the CLIP indicator to illuminate. See troubleshooting
section for advice on how to correct this and get your system working.
The Ampetronic website and support team provide more details on loop and feed cables. The
correct design and positioning of the actual loop is vital for satisfactory system performance. If in
doubt consult Ampetronic for advice.
4. BLOCK DIAGRAM




 

 


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



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

Ampetronic C Series Installation Handbook & User Guide
Page 8
5. QUICK START GUIDE
Operation
If you are unfamiliar with Ampetronic C Series products please pay close attention to the setup
procedure in order to take advantage of the advanced features that these drivers o󰀨er.
The C Series drivers analyse the loops that they are connected to at switch-on to check that they
have the required characteristics. If the loop resistance exceeds 10Ω then a warning of high loop
resistance is displayed.
The driver has two inputs labelled 1 and 2. Both inputs can be set to mic or line mode. 24V
phantom power is available in mic mode. Additionally input 2 has a 100V input accessed through a
separate 2 pin socket. Do not use both input 2 sockets at the same time� Dante enabled models
have a dedicated RJ45 socket which acts as Input 3.
Warning: Connection to a 100V line system may involve the risk of electric shock and
therefore must be carried out by an instructed or skilled person.
Depending on the model, the driver has one or two loop outputs labelled Loop A and Loop B
respectively.
Warning: Operation of this equipment in a residential environment could cause radio
interference.
NOTE: This equipment has been tested and found to comply with the limits for a Class A digital
device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable
protection against harmful interference when the equipment is operated in a commercial
environment. This equipment generates, uses, and can radiate radio frequency energy and, if not
installed and used in accordance with the instruction manual, may cause harmful interference to
radio communications. Operation of this equipment in a residential area is likely to cause harmful
interference in which case the user will be required to correct the interference at his own expense.
NOTE: Any changes or modications not expressly approved by the party responsible for
compliance could void the user’s authority to operate the equipment.
Factory Settings
From the factory the drivers are provided with the following setting:
Current: -20dB from full output
Metal Loss Compensation (MLC) OFF
Input Gain Channel 1 -80.0
Input Gain Channel 2 -80.0
Input Gain Channel 3 -80.0dB (Dante enabled drivers only)
Driver Name blank - reports model number
Phase Shift ON (dual channel drivers)
Ethernet Parameters Set by DHCP

Ampetronic C Series Installation Handbook & User Guide Page 9
The C Series drivers have their adjustments set in decibels (dB). A setting of 0dB equates to
maximum current or to maximum input gain. A value of less than 0dB will reduce the current
or input gain accordingly. This change is to simplify adjusting the driver output to meet the
international performance Standard.
If the loop output is measured to be 2.7dB below the required level then adding 2.7dB to the current
output should bring it to the Standard.
You can reset the driver to these factory default values from the user interface.
Control Interfaces
The C Series drivers have two user control interfaces.
1� Graphical user interface on the unit front panel
2. Browser Interface available via a network connection - where tted
The front panel controls and LCD display implement a simple menu system on the front of the driver
whilst the Ethernet interface allows control through a web browser on a remote device. Additional
control features are available on network versions.
Network enabled units can also be directly controlled from the Loopworks Measure app for
streamlined commissioning.
Start Up Tests
When C Series drivers are switched on they execute a series of tests that check the driver’s internal
systems and also the loops that they are connected to. These tests take about 5 seconds and the
display reads “DIAGNOSTICS IN PROGRESS” whilst they are being performed.
If everything is OK the Home screen should be displayed. If an error was detected then the error
light will ash red and the display will read the cause of the error. Please refer to section 12 where
the error messages are explained in detail.
Initial Setting up
C Series drivers include a test signal generator that can produce 6 di󰀨erent test signals:
• Sine Wave
Note: prolonged use of a sine wave at high current can cause the amplier to overheat and limit output levels
• Pink Noise
• Sine Wave / Pink Noise Combi signals with 1 kHz, 1.6 kHz and 2.5 kHz Sine options
• Loop Output(s) Disabled mode
These signals over-ride the inputs on the back of the driver.
N.B. Dual channel drivers are not stereo, all inputs are summed and sent to both loop outputs. The
factory default settings of the driver have both input gains set to -80dB (e󰀨ectively o󰀨).

Ampetronic C Series Installation Handbook & User Guide
Page 10
STATUS LED:
Solid Green = normal operation
Flashing Green = sleep mode
Flashing Amber = standby
Flashing Red = error
Fast Flashing Amber = rmware update
In case of error see troubleshooting section.
LCD DISPLAY SCREEN: Displays amplier model & congurable network name when idle,
or menu selection and values during set-up and status checking.
MENU NAVIGATION - HOME BACK & POWER: Short press returns to the previous menu.
Long press initiates power menu.
MENU NAVIGATION - ROTATE: moves between value screens or adjusts parameters
MENU NAVIGATION - SELECT (PRESS): select to enter menus
1
2
3
4
5
2
6
6. FEATURES OVERVIEW
109 11
71
12
8
13
AC POWER INPUT
120/230V
45 - 65Hz
RISK OF ELECTRIC SHOCK
DO NOT OPEN
ATTENTION: RISQUE DE CHOCS
ELECTRIQUE NE PAS OUVRIR
CAUTION
Induction Loop Driver
www.ampetronic.com
Designed and
made in the UK
C14-2 Serial N
o
MIC
OFF
LINE
ON
INPUT 2 INPUT 1
PHANTOM
MIC / LINE MIC / LINE
+12V+
-
CHANNELA
CHANNEL B
ETHERNET
0.1A
DC OUTPUT
INPUT 2
100V
USB
(UPDATE ONLY)
+ + - -
LOOP OUTPUT
LOOP OUTPUT
STATUS
FUSE:T8AL
POWER:180W
+ + - -
MIC LINE
This device complies with Part 15 of the FCC rules.
Operation is subject totwo conditions.
(1) this device may not cause harmful interference, and
(2) this device must accept any interference received,
including interference that may cause undesired operation.
E114692
Electrical
Safety
AUDIO OUT
TEST USE ONLY
AC POWER INPUT
120/230V
45 - 65Hz
RISK OF ELECTRIC SHOCK
DO NOT OPEN
ATTENTION: RISQUE DE CHOCS
ELECTRIQUE NE PAS OUVRIR
CAUTION
Induction Loop Driver
www.ampetronic.com
Designed and
made in the UK
C14-2
Serial N
o
MIC
OFF
LINE
ON
INPUT 2 INPUT 1
PHANTOM
MIC / LINE MIC / LINE
+12V
+
-
CHANNELA
CHANNEL B
ETHERNET
0.1A
DC OUTPUT
INPUT 2
100V
USB
(UPDATE ONLY)
+ + - -
LOOP OUTPUT
LOOP OUTPUT
STATUS
FUSE:T8AL
POWER:180W
+ + - -
MIC LINE
This device complies with Part 15 of the FCC rules.
Operation is subject totwo conditions.
(1) this device may not cause harmful interference, and
(2) this device must accept any interference received,
including interference that may cause undesired operation.
E114692
Electrical
Safety
AUDIO OUT
TEST USE ONLY

Ampetronic C Series Installation Handbook & User Guide Page 11
AC POWER INPUT
120/230V
45 - 65Hz
RISK OF ELECTRIC SHOCK
DO NOT OPEN
ATTENTION: RISQUE DE CHOCS
ELECTRIQUE NE PAS OUVRIR
CAUTION
Induction Loop Driver
www.ampetronic.com
Designed and
made in the UK
C14-2 Serial N
o
MIC
OFF
LINE
ON
INPUT 2 INPUT 1
PHANTOM
MIC / LINE MIC / LINE
+12V+
-
CHANNELA
CHANNEL B
ETHERNET
0.1A
DC OUTPUT
INPUT 2
100V
USB
(UPDATE ONLY)
+ + - -
LOOP OUTPUT
LOOP OUTPUT
STATUS
FUSE:T8AL
POWER:180W
+ + - -
MIC LINE
This device complies with Part 15 of the FCC rules.
Operation is subject totwo conditions.
(1) this device may not cause harmful interference, and
(2) this device must accept any interference received,
including interference that may cause undesired operation.
E114692
Electrical
Safety
AUDIO OUT
TEST USE ONLY
AC POWER INPUT
120/230V
45 - 65Hz
RISK OF ELECTRIC SHOCK
DO NOT OPEN
ATTENTION: RISQUE DE CHOCS
ELECTRIQUE NE PAS OUVRIR
CAUTION
Induction Loop Driver
www.ampetronic.com
Designed and
made in the UK
C14-2
Serial N
o
MIC
OFF
LINE
ON
INPUT 2 INPUT 1
PHANTOM
MIC / LINE MIC / LINE
+12V
+
-
CHANNELA
CHANNEL B
ETHERNET
0.1A
DC OUTPUT
INPUT 2
100V
USB
(UPDATE ONLY)
+ + - -
LOOP OUTPUT
LOOP OUTPUT
STATUS
FUSE:T8AL
POWER:180W
+ + - -
MIC LINE
This device complies with Part 15 of the FCC rules.
Operation is subject totwo conditions.
(1) this device may not cause harmful interference, and
(2) this device must accept any interference received,
including interference that may cause undesired operation.
E114692
Electrical
Safety
AUDIO OUT
TEST USE ONLY
LOOP OUTPUT(S): 4 way connections to loop cable(s).
ETHERNET: For network cable (LAN or Wireless Router)
DANTE: RJ45 for Dante or AES67 input
USB: Use for Firmware upgrades or power for Wireless Router (200mA current limit)
DC OUTPUT: 2-pin connection for ancillary units or status reporting (network option only)
LINE OUT: A 3-pin ‘pre-fade’ balanced output to allow recording of the audio signal
100V LINE: Additional input connected internally to input 2
STATUS: 2-pin normally closed relay connection, opens to reect fault conditions.
(C10/14 only)
MIC/LINE SWITCHES: Push switches to set the input levels of input 1 or 2
INPUTS: Socket for balanced MIC or LINE signals
PHANTOM SWITCH: Phantom switch applies 24V to both inputs
SERIAL NUMBER: For use when registering your warranty or reporting a fault.
FUSE: Open to replace fuse (type dependent on driver model & supply voltage)
AC POWER: Standard 3-pole IEC320 connector containing primary fuse for the unit.
MAINS VOLTAGE SWITCH: Allows selection of 230V or 120V mains supply.
13
14
17 18 19
15
16
17
15 16
54
3
14
12
6
7
8
9
10
11
18
19
20
20

Ampetronic C Series Installation Handbook & User Guide
Page 12
7. FRONT PANEL MENU GUIDE
Menu Structure
Once a unit is powered up and after the initial diagnostics the home screen appears. User
interaction with any of the controls brings you to the rst of 8 mode screens. Navigating then scrolls
through these mode screens with wrap-around.
Clicking the home button will take you back to the home screen
Clicking the select control will take you into the value screen for the mode selected
Home
button
Navigate (rotate)
and select (press)
control
128 x 160 pixel
colour display
Status LED:
Solid Green = OK
Flashing Green = sleep mode
Flashing Amber = standby
Flashing Red = error
Fast Flashing Amber = rmware update
Select Mode
Screens - rotate in
either direction
Mode screens
Home screen
NOTE: MultiLoop™
models only
Input 3 only available on
Dante enabled models.

Ampetronic C Series Installation Handbook & User Guide Page 13
Home screen display
Driver name:
User dened eld, defaults to
model type i.e. C7-2N
Ethernet logo:
Only present when
Ethernet option is
tted.
Side bar indicators AGC:
• Yellow if AGC is active but not
optimal.
• Green if optimal.
• Red if overloaded.
A & B: Shows current is present in
loop outputs.
• Green if >-20dB,
• Red if clipping
Mode screen displays
Mode screens have a sidebar
which shows all the available
mode screens with the one
selected shown in negative.

Ampetronic C Series Installation Handbook & User Guide
Page 14
Value screen displays
Input Attenuation
Value screen title
Input attenuation value
adjusted by rotary control.
Speed sensitive. Adjustable
in 0.1 - 10dB steps
‘Pips’ show adjustment
range. No pips = -80dB, All
pips =0dB
AGC bar graph.
Shows gain reduction in 3dB steps.
Yellow = less than optimum signal level.
Green = optimum signal level
Red = overload
NOTE:
All input attenuation value
screens are the same so only
this one is shown.
All inputs can activate the AGC
so the level shown may be due
to a di󰀨erent input.
When setting input levels
ensure all other inputs are
muted or unplugged.
Loop Current
Loop Current value
adjusted by rotary control.
Speed sensitive. Adjustable
in 0.1 - 10dB steps
Loop Current bar graph for each
channel. Shows Loop output current
in 2dB steps from >-20dB to 0dB in
green. Red = clipping
‘Pips’ show adjustment
range. No pips = -80dB,
All pips =0dB

Ampetronic C Series Installation Handbook & User Guide Page 15
Current Offset (MultiLoop models only)
Current O󰀨set value adjusted
by rotary control. Counter
clock-wise reduces channel
A. Clock-wise reduces
channel B. Adjustment is
from 0 to -10dB on either
channel. Further adjustment
turns that channel o󰀨 and
disables loop test for that
channel.
Loop Current bar graph for each
channel. Shows Loop output current
in 2dB steps from >-20dB to 0dB in
green. Red = clipping
‘Pips’ show adjustment range.
No pips = Loop A -10dB (Loop
B = 0dB)
Centred = both channels 0dB
All pips = Loop B -10dB (Loop
A = 0dB)
Metal Loss Metal Loss Correction value
adjusted by rotary control. In
0.25dB steps from O󰀨 (0dB)
to 4dB/Octave. Clockwise
from 4dB/Octave sets MLC
to ‘Custom’ – this is only
congurable via the network
connection (where tted)
Loop Current bar graph for each
channel. Shows Loop output current
in 2dB steps from >-20dB to 0dB in
green. Red = clipping
‘Pips’ show adjustment range.
No pips = O󰀨 (0dB/oct)
10 pips = 4dB/Oct
11 pips = Custom

Ampetronic C Series Installation Handbook & User Guide
Page 16
Test signals Test signal selected by rotary
control:
O󰀨
Pink noise
Combi 1kHz, 1.6kHz & 2.5kHz
Sine 100 – 5000Hz (3rd octave
steps)
Loop Output Disabled
All test signals timeout after 2
hours (default) this time can
be changed in the website (on
network versions).
Loop Current bar graph for each
channel. Shows Loop output current
in 2dB steps from >-20dB to 0dB in
green. Red = clipping
Status Driver status screen contains read
only information and access to less
commonly used settings.
About provides access to driver
information such as rmware
version.
Unit type, IP address and
heatsink temperature are shown
for reference.
Atten shows real time level of
any output attenuation applied to
protect driver as a result of signal,
thermal or load conditions.
ii Any active errors will be shown
here, if there are multiple errors a
scroll bar appears, use the rotary
control to view additional lines.
Settings sub-menu Network gives access to network
settings and driver name.
Low Cut allows a 250Hz low cut
lter to be applied to either or both
of inputs 1 and 2.
MLC HF Boost enables a custom
dual-slope setting intended to
better optimise frequency response
in systems with more signicant
high frequency losses.
Factory Reset allows the user to
reset all the audio settings and the
driver name to factory defaults.
System Re-start causes the driver
to re-start without changing any
settings. This could be to perform
the start-up diagnostics again or
to update the rmware (with a
suitable USB stick connected)

Ampetronic C Series Installation Handbook & User Guide Page 17
Home screen timeout – if no action is taken in a mode screen after 30s the home screen is
displayed. For a value screen the timeout is 60s.
Sleep mode – After a 30 minute period of user or audio inactivity the driver turns on the ‘Loop
outputs disabled’ test signal and turns o󰀨 the screen to save power. The Status led ashes green
to indicate this. Any user activity or presence of audio signal brings the driver out of sleep. The
inactivity time can be changed via the website (where tted)
Lock screen – A long press on the home button brings up the lock menu. This gives access to
standby, re-start (same as in settings menu) & lock. Selecting lock makes the user controls inactive.
Any user input results in a padlock being displayed. To unlock the unit press the home button six
times. Unlock instructions are shown briey when lock is selected.
Standby – This is a user imposed sleep. Only user activity (not audio signal) brings the driver out of
standby.
Additional features

Ampetronic C Series Installation Handbook & User Guide
Page 18
8. ETHERNET INTERFACE - Network versions only
Networkable C Series models feature a web interface that can be viewed in a web browser (opti-
mised for the Chrome browser). The web interface is used to monitor and adjust the driver.
You will be asked for the User Name and Password for the driver as a deterrent to unauthorised
parties. These values are case sensitive and need to be entered once per session to access the
driver.
User Name = superadmin, netadmin, audioadmin
Password = ampetronic (default)
For security purposes, it is recommended that the default password is changed to a strong
password at the earliest possible opportunity. This can be done using the web interface.
Four levels of access are available:
1. superadmin - allows access to all settings
2. netadmin - access the network cong page only
3. audioadmin - access the audio settings pages only
4. no login - allows access to status page only
Setting up the Ethernet Interface
Ethernet infrastructure with DHCP server
The factory default setting is for Dynamic Host Conguration Protocol (DHCP) to be enabled.
This allows the driver to request values for IP address, Gateway, Subnet Mask, and Primary and
Secondary DNS from the host network DHCP server.
If an existing Ethernet IP system is available then the driver can be plugged into it and it will
congure itself. When the driver obtains an IP address it will display it on the front panel LCD for 5
seconds.
To view the web interface type the IP address displayed into the web browser address bar on your
device.
Ethernet infrastructure without DHCP server
If a DHCP server is not available, it is possible to enter manual values for the IP address, Subnet
mask, DNS and Gateway from the front panel menu. Before you can do this, you will need to switch
o󰀨 DHCP.
After entering these values, the driver needs to be restarted again.
Caution: Manually setting the Ethernet values incorrectly can lead to problems on the Ethernet
system and could potentially bring the network down.
Considerations for external network conguration
The C Series loop drivers communicate using a number of network port numbers. If you wish to
communicate to/from the loop driver across a wider network (e.g. including routers, gateways, etc),
you may need to ensure these ports are open for communication.
The web interface operates on the standard port 80. The email error message service sends
through port 587. Port 80 is likely to already be open for outbound tra󰀩c but your network

Ampetronic C Series Installation Handbook & User Guide Page 19
administrator may need to allow inbound connections to the loop driver on this port. 587 may be
open but if you have problems you may need ask the administrator to allow outbound tra󰀩c to the
internet (the loop driver will use ‘SendGrid’ to route all outbound email alerts).
No Ethernet infrastructure available
A direct connection between the driver and a computer Ethernet is supported. Use a network cable
to connect the loop driver and computer ethernet ports together, and wait a short while. Open
a browser (Chrome is recommended) and enter the loop driver’s IP address. This can be found
using the front panel menu under Driver Status . It may take 30-60 seconds for an IP address to be
negotiated. In some cases a power cycle may be required.
Web Interface Structure
Information icons are shown
alongside section headers, clicking
or tapping on these will display a
tooltip to help explain the relevant
settings or information. Click or
tap anywhere outside the tooltip to
dismiss it.
The Web interface is split into
three tabs: Audio Settings, Network
Cong and Status. Clicking on
the tab heading will change to
the contents of that tab. There is
also a link to a page which allows
passwords to be updated.
The title of the web page is always
CX-XX where Xs are dependent on
the driver type. At the bottom of the
screen are the meters for the level
of compression and the current in
loop A (and B if present).
It should be noted that the settings displayed on the Audio Settings tab of the web page are
updated once a second. Thus if someone changes a value from the front panel or via another web
connection, these changes will be shown on the web page as they happen.

Ampetronic C Series Installation Handbook & User Guide
Page 20
Audio Settings Tab
The audio settings tab allows control of the most important settings of the driver. The items on this
page are sliders, toggle switches and drop down boxes.
To alter a value it is necessary to click on the slider handle and move it. The value is not sent to the
driver until the slider handle is released (mouse click up or nger o󰀨 touchscreen). Alternatively it is
possible to click in the text box next to the slider and enter a value directly.
There are two important points to note about directly entering values into the text box.
• Although the slider will move as the value is altered, no information is sent to the driver as this
happens.
• The value only gets sent to the driver when the edited slider “loses focus” which means that
you have to click (or touch if on a mobile device) at a point somewhere away from the slider you
have just adjusted. Only at this point is the new value transferred to the driver.
Input 1 Low cut lter: Allows a xed 250Hz low cut lter to be applied for applications where
microphones are plugged directly into the input.
Input 1 Attenuation (dB): Controls the attenuation of the input 1 channel. Values of 0 to -80dB in
0.1dB steps are allowed.
Input 2 Low cut lter: Allows a xed 250Hz low cut lter to be applied for applications where
microphones are plugged directly into the input.
Input 2 Attenuation (dB): Controls the attenuation of the input 2 channel. Values of 0 to -80dB in
0.1dB steps are allowed.
Priority: Enables the priority input option, ducks other inputs when signal
level on input 2 exceeds AGC threshold.
Ducking Level (dB): Adjusts the level of attenuation applied to the other inputs, when
priority is active.
Input 3 Attenuation (dB): Controls the attenuation of the input 3 channel on Dante enabled
models. Values of 0 to -80dB in 0.1dB steps are allowed.
Signal Type: Drop down box that selects the test signal from OFF, Pink Noise,
Sine Wave, Combi 1K, Combi 1.6K, Combi 2.5K and disable loop outputs
Note: prolonged use of a sine wave at high current can cause the amplier to
overheat and limit output levels
Frequency: Controls the frequency of the continuous sine wave test signal
Timeout: Controls the time which test signals remain on. 10, 30, 60 and 120
(default) minutes are available.
Current: Controls the level of current to loops A and B. Maximum current is
with the slider at 0 dB and minimum with the slider at -80 dB.
O󰀨set Value: Controls the o󰀨set between loops A and B. Moving the slider to the left
(for dual output drivers only) reduces loop A by up to 10dB then o󰀨. Moving to the right reduces loop B
by up to 10 dB then o󰀨.
Slope: Corrects system frequency response due to metal structures in a
building. The drop down box allows the selection of OFF, Custom or a
slope of 0.25dB/Octave to 4.00dB/Octave. See Technical Specications
in section 15 for further details.
Custom LF: A slider that controls the slope of the LF section of the custom MLC.
Values of between 0 and 4 in 0.25 dB steps can be entered here.
Custom Knee: Controls the frequency where the LF custom slope stops and the HF
slope starts.
Custom HF: A slider that controls the slope of the HF section of the custom