Használati útmutató Lab Gruppen E 12:2

Lab Gruppen Vevő E 12:2

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Oldal 1/28
E SERIES
ENERGY STAR® qualified installation amplifiers
Operation Manual
▸ E 4:2
▸ E 8:2
▸ E 12:2
Rev. 2.1.0
It em n o. OM –E S
1. Important safety instructions
2 E SERIES Operation Manual rev 2.1.0
1. Important safety instructions
Before using your E Series, be sure to carefully read the applicable items of this Operation Manual and the Safety
Instructions.
1. Read these instructions.
2. Keep these instructions
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this apparatus near water.
6. Clean only with a dry cloth.
7. Do not block any ventilation openings. Install in accordance
with the manufacturer’s instructions.
8. Do not install near any heat sources such as radiators, heat
registers, stoves, or other apparatus (including ampliers) that
produce heat.
9. Do not defeat the safety purpose of the polarized or grounding-
type plug. A polarized plug has two blades with one wider
than the other. A grounding-type plug has two blades and
a third grounding prong. The wide blade or the third prong
is provided for your safety. If the provided plug does not t
into your outlet, consult an electrician for replacement of the
obsolete outlet.
10. Protect the power cord from being walked on or pinched,
particularly at plugs, convenience receptacles, and the point
where they exit from the apparatus.
11. Only use attachments/accessories specied by the
manufacturer.
12. Use only with a cart, stand, tripod, bracket, or table specied
by the manufacturer, or sold with the apparatus. When a
cart is used, use caution when moving the cart/apparatus
combination to avoid injury from tip-over.
13. Unplug this apparatus during lightning storms or when
unused for long periods of time.
14. Refer all servicing to qualied 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.
2. Approvals
3. Warnings
3.1 Explanation of warning symbols
This equipment conforms to the requirements
of the EMC Directive 2004/108/EC and the
requirements of the Low Voltage Directive
2006/95/EC.
Standards applied: EMC Emission EN55103-
1, E3
EMC Immunity EN55103-2, E3, with S/N below
1% at normal operation level.
Electrical Safety EN60065, Class I
This equipment is tested and listed according to the
U.S. safety standard ANSI/ UL 60065 and Cana-
dian safety standard CSA C22.2 NO. 60065. UL
made the tests and they
are a Nationally Recognized Testing
Laboratory (NRTL).
This equipment is tested and found to comply with
the limits of a Class A device in part 15B of the FCC
rules. UL made these tests.
This equipment has been certied to comply
with PSE for Japan.
This equipment has been certied by CQC to
conform to CCC.
E Series is ENERGY STAR 3.0
qualied; this has been certied by UL.
The lightning bolt triangle is used to
alert the user to the presence of
un-insulated “dangerous voltages”
within the unit’s chassis that may be
of sufcient magnitude to constitute a
risk of electric shock to humans.
The exclamation point triangle is used to
alert the user to presence of important
operating and service instructions in the
literature accompanying the product.
3
E SERIES Operation Manual rev 2.1.0
3.2 Warnings
To reduce risk of re or electric shock, do not expose this
apparatus to rain or moisture.
Français: Pour réduire les risques d’incendie ou de choc
électrique, n’exposez pas l’appareil à la pluie ou à l’humidité.
Do not expose this system/apparatus to dripping or splashing
and ensure that no objects lled with liquids, such as vases,
are placed on the apparatus.
Français: N’exposez pas ce système/appareil au
ruissellement ni aux éclaboussures et assurez-vous qu’aucun
objet contenant du liquide tel qu’un vase n’est placé sur
l’appareil.
This apparatus must be connected to a mains socket outlet
with a protective earthing connection.
Français: Cet appareil doit être raccordé à une prise secteur
avec terre de protection.
The mains plug is used as a disconnect device and shall
remain readily operable.
Français: La che d’alimentation sert de dispositif de
déconnexion et doit rester constamment accessible.
To prevent electric shock do not remove top or bottom covers.
No user serviceable parts inside. Refer servicing to qualied
service personnel.
Français: Pour prévenir un choc électrique, ne retirez pas
les capots du dessus et du dessous. Aucune pièce n’est
réparable par l’utilisateur à l’intérieur. Conez toute réparation
à un personnel de maintenance qualié.
To completely disconnect this equipment from the AC mains,
disconnect the power supply cord plug from the ac receptacle.
The mains plug of the power supply cord shall remain readily
operable.
Français: Pour totalement isoler l’équipement de l’alimentation
secteur, débranchez le cordon d’alimentation de son
embase. La che secteur du cordon d’alimentation doit rester
accessible.
Do not install this device in a conned space.
Français: N’installez pas cet appareil dans un espace conné.
Check the voltage in your area and use the correct type of mains
connector.
Français: Vériez la tension en vigueur dans votre région et
utilisez le bon type de che secteur.
Please refer to the following table:
110-125 V (US) UL817 and CSA C22.2 no 42.
220 -230 V (EUROPE) CEE 7 page VII, SR section 107-2-D1/
IEC 83 page C4.
240 V (UK)
BS 1363 of 1984. Specication for
13 A fused plugs and switched and
unswitched socket outlets.
Voltage Line plug (according to standard)
3.3 User responsibility
3.1.1 Mains connection grounding
Your amplier must be connected to a grounded socket outlet.
3.1.2 Speaker output hazard
Power ampliers are capable of producing hazardous output
voltages. To avoid electrical shock, do not touch any exposed
speaker wiring while the amplier is operating. External wiring
connected to the speaker terminals shall be installed by a
qualied person, or ready-made leads or cords of appropriate
capacity shall be used. As the amplier outputs produce high
voltage, do not connect or disconnect speaker cables when
the mains power is on.
3.1.3 Radio interference
A sample of this product has been tested and complies with
the limits for the European Electro Magnetic Compatibility
(EMC) directive. It also 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 from
electrical equipment. This product uses radio frequency
energy and, if not used or installed in accordance with these
operating instructions, may cause interference to other
equipment, such as radio receivers. However, there is no
guarantee that interference will not occur in a particular
installation. If this equipment causes harmful interference
to radio or television reception (determined by turning the
equipment on and off), the user may be able to correct the
interference by one or more of the following measures:
• Check if the affected unit complies with the EMC limits for
immunity, (CE-labeled). If not, address the problem with
the manufacturer or supplier. All electrical products
sold in the EC must be approved for immunity against
electromagnetic elds, high voltage ashes, and radio
interference.
• Consult the dealer or an experienced radio/TV technician
for help.
• Reorient or relocate the antenna.
• Increase the separation between the equipment and
receiver.
• Connect the equipment into an outlet on a circuit different
from that to which the receiver is connected.
3.1.4 Speaker damage
Many loudspeakers can be easily damaged or destroyed by
overpowering them. Always check the speaker’s continuous
and peak power capabilities. Although the amplier’s
attenuators can be used to reduce the overall gain, an
increase of the input signal can still result in full output power,
which may cause damage to connected speakers.
3.1.5 Maintenance
For safe and reliable operation, any dust collected in the front
panel should be removed regularly. In rare circumstances,
accumulated dust could ignite due to high internal
temperatures and cause a re. If the front is clogged so that
air cannot pass, then the unit will eventually go into thermal
protection; any resultant problems will not be covered by the
warranty.
3. Warnings
4. Table of Contents
4 E SERIES Operation Manual rev 2.1.0
4. Table of Contents
1. Important safety instructions 2
2. Approvals 2
3. Warnings 2
3.1 Explanation of warning symbols2
3.2 Warnings 3
3.3 User responsibility3
5. Introduction 6
5.1. Welcome 6
5.2. Features 6
5.2.1. Class D output stage and universal power supply with low current draw 6
5.2.2. Amplier sensitivity / gain 7
5.2.3. Protection and performance optimization 7
5.2.4. 50 Hz high-pass lter 8
5.2.5. Auto Power Down / On (APD / APO) scheme 8
5.2.6. General Purpose Input / Output (GPIO) facilities 8
6. Unpacking and visual checks 8
7. Installation 9
7.1. Mounting 9
8. Cooling and fan operation 9
9. Operating voltage 10
10. Grounding 10
11. Front panel 11
12. Rear panel 12
12.1. Power 12
12.2. Input Signal Present Threshold (SPT) 13
4. Table of Contents
E SERIES Operation Manual rev 2.1.0 5
13. Operation and performance 14
13.1. Introduction 14
13.2. Operating precautions 14
13.3. Signal ow and headroom 14
13.4. Audio input and output connections, setup and features 15
13.4.1. Balanced / unbalanced Input connection 15
13.4.2. Output operation and connection 15
13.4.3. Output bridge mode and asymmetric loading 16
13.4.4. Constant Voltage 70 V system setup and operation 18
13.4.5. Output Current Peak Limiter (CPL) 18
14. Appendices 18
14.1. Maintenance 18
14.2. Thermal dissipation 19
14.3. Asymmetric loading data 20
14.4. Technical specications 24
15. Warranty 25
15.2. Technical assistance and service 25
16.2.1. International service 25
15.2.2. Factory service 26
5. Introduction
6 E SERIES Operation Manual rev 2.1.0
5. Introduction
5.1. Welcome
Thank you for choosing a Lab.gruppen E Series product built around Lab.gruppen’s IDEEATM, the IntelliDrive
Energy Efcient Amplier. This manual provides a comprehensive guide to the features and functionality of E Series
model E 12:2, E 8:2 and E 4:2 ampliers. Please read through this manual in its entirety to become fully acquainted
with conguration options and protection circuitry.
This brief summary, in conjunction with Installation (Section 7), contains the basic information needed to safely
install the amplier and place it in service. However, we highly recommend reading through this manual in its
entirety, beginning with Features and Technologies and continuing through to Operation and Performance. As you
become thoroughly familiar with all aspects of operation, you may learn of features or options that will affect your
choices on amplier modes or loudspeaker system conguration.
Lab.gruppen E Series power ampliers are designed and built specically for the unique demands of permanent
installation applications. By packing two channels of efcient recongurable power amplication into a 1U chassis,
the E Series achieves a high power and channel density. The benets include reduced rack space requirements
and minimal heat build-up. The exible output stages enable each amplier channel to be set for either low
impedance or “70 V”-constant voltage (70.7 Vrms = 100 V peak) mode.
Although E Series features and facilities are tailored for installation applications, each amplier draws on the
foundational engineering that has made Lab.gruppen the benchmark of quality for touring concert systems:
exceptional sonic performance, rugged construction, proven reliability, and protection features that anticipate every
unwelcome possibility.
This manual was created for the E Series E 12:2, E 8:2 and E 4:2 amplier models. Any references to “E Series” in
this manual refer to all models in the range.
5.2. Features
Your new E Series amplier incorporates a number of sophisticated technologies – many of them proprietary to
Lab.gruppen – that ensure the best possible performance and years of reliable operation. Familiarizing yourself with
these technologies will prove invaluable in setting up and optimizing your loudspeaker system.
5.2.1. Class D output stage and universal power supply with low current draw
All E Series ampliers employ a unique Class D output stage that is ideally matched to the rated power output. To
provide exibility, each channel offers sufcient voltage swing and current capacity to drive either constant voltage
(“70 V”) or low impedance (2/4/8 or 16 ohms). In order to have low thermal losses as well as the voltage swing
required to drive 70 V, the design is based on a permanently bridged output.
5. Introduction
E SERIES Operation Manual rev 2.1.0 7
5.2.2. Amplifier sensitivity / gain
For ease of use in system integration, E Series have been designed with a xed sensitivity of 4 dBu. Each model
offers two operational modes individually selectable per channel:
* “70 V” – Optimized for constant voltage systems but also can be used when load impedance is 8 ohms or higher.
Input signal of 4 dBu produces 70.7 Vrms output, for gain of 35.2 dB.
* “Lo-Z” – Optimized for driving loads with impedance below 16 ohms. Input signal of 4 dBu produces the rated
burst power into 4 ohms; gain varies by model.
5.2.3. Protection and performance optimization
Appropriate and reliable power amplication is vital to any audio system. Inadequate or faulty power ampliers
could cause damage to loudspeakers, or in some cases to the power ampliers themselves. To prevent damage
or service interruptions, E Series ampliers offer advanced features to protect both internal circuits and connected
loads. These features include the mains current limiter that allows several ampliers to be connected to a typical
mains outlet.
Standard E Series protection features include:
• A CPL (Current Peak Limiter) ensures that the amplier’s output does not exceed the safe current handling
parameters of the amplier components.
• Temperature protection ensures that the amplier will not be damaged by exceeding thermal limits. A TEMP
indicator LED ashes when the amplier approaches thermal limits to allow user action before protective muting
engages.
• A PAL (Power Average Limiter) limits the maximum average power consumption from the mains.
• DC protection ensures destructive DC signals will not appear at the amplier outputs. If such conditions occur
an internal fuse opens.
Note! There is no open fuse indication on the amplier. If a channel indicates signal presence but
there is no sound, an open fuse could be the cause. If an internal fuse is blown, then the amplier
needs service.
• Under Voltage Limit - A temporarily low mains voltage will indirectly initiate limiting if a high output level
is attempted. In most circumstances, depending on signal characteristics and level, the amplier will remain
operational. This limiting allows the amplier to remain functional during sustained periods of lower mains
voltage, as well as during temporary dips and when very long mains cords are used.
• Low inrush current ensures that the mains breaker will not trip when several power ampliers are turned on
simultaneously.
6. Unpacking and visual checks
8 E SERIES Operation Manual rev 2.1.0
5.2.4. 50 Hz high-pass filter
Each channel has a switchable 50 Hz high-pass lter. In the default full-range position the amplier has a at
response with a -3 dB point at 2 Hz. When engaged, the lter rolls off low frequencies (12 dB/octave) for greater
efciency and reliability in, for example, 70 V high-impedance systems where the removal of very low frequency
content may be desired. The lter can also be used if desired when the output channel is connected to low
impedance loudspeakers that are unable to reproduce deep bass frequencies.
5.2.5. Auto Power Down / On (APD / APO) scheme
To comply with Energy Star 3.0 requirements, all E Series ampliers incorporate an APD scheme with power
consumption below 1 W in sleep/standby mode. The E Series will go to standby mode after 20 minutes without
input signal.
E Series also incorporates an APO functionality that restores full operation less than two seconds after signal is
applied to either of the inputs. Section 12.2 describes the threshold that is used.
5.2.6. General Purpose Input / Output (GPIO) facilities
The GPIO connections allow seamless interfacing with many third-party control and power sequencing systems.
Functions are optional; the ampliers will operate normally when GPIO is not connected.
The General Purpose Input (GPI) controls the power state via external contact closure as follows:
• It reacts to a transition from open to closed by forcing the unit to the on state. The APD function will still apply,
and the on state will be retained after a power cycle.
• It reacts to a transition from closed to open by forcing the unit to the standby state. This will also disable the
APO until it is turned on again.
The General Purpose Output (GPO) is an internal contact closure that, when closed, indicates the unit is on and
both channels functional (neither muted due to high temperature). Open indicates that the amplier is either in
standby or protective mute is activated in one or both channels.
6. Unpacking and visual checks
Every Lab.gruppen amplier is carefully tested and inspected before leaving the factory and should arrive in perfect
condition. If any damage is discovered, please notify the shipping carrier immediately. Save the packing materials
for the carrier’s inspection and for any future shipping.
7. Installation
E SERIES Operation Manual rev 2.1.0 9
7. Installation
7.1. Mounting
The amplier is one rack unit high (1U) and will t into a standard EIA 19” rack. The depth is 276 mm (10.9”). The
weight is approximately 4.2 kg (9.3 lbs) depending on model type.
Free airow from front-to-rear of the amplier must be allowed. Therefore, no doors or rack-lids should be mounted
in front of or behind the ampliers.
Ampliers may be stacked directly on top of each other. There is no need for spacing in between units, although
spacing might enable more convenient installation of cabling on the rear panel.
8. Cooling and fan operation
The E Series ampliers have very low idle power draw and they are very efcient. However, to reduce the risk
of engaging thermal protection, the amplier has been designed with a forced-air cooling system (air ow from
front-to-rear) that activates as needed. Front-to-rear airow is preferred as cooler air is present at the front in nearly
all installed applications, allowing higher continuous power levels without encountering thermal problems.) Never
attempt to reverse the airow.
Always allow adequate air supply in front of the amplier, and ensure that the rear of the amplier has sufcient
space to allow exhaust to escape. If the amplier is rack-mounted, do not use covers or doors on the front or rear
of the rack.
Should a heat sink overheat, the temperature sensing circuits will mute the overheating channel. If the power
supply overheats, another sensing circuit will mute all output channels until the power supply cools to safe
operating temperature. An early warning before shut down will be indicated on the front-panel TEMP LED.
Always make sure that the recessed dust grille in the front is clean to ensure maximum possible airow as this will
minimize the risk of thermal protection, any required repairs are not covered by the warranty.
To calculate the maximum heat emission value when installing the ampliers in rooms with an air-conditioning
system, please refer to the Thermal Dissipation specications provided in the Appendix (Section 14.2).
11. Front panel
E SERIES Operation Manual rev 2.1.0 11
11. Front panel
The front panel presents the following amplier status indicators:
1 Power – Indicates standby mode with amber and on mode with green.
2 Temperature – Flashes amber to for early warning if the temperature is high in either the PSU or one of the
output channels. Dangerously high temperature initiates muting, as indicated with constant amber light.
3 Input Signal Present – Illuminates when the input signal level exceeds the Signal Present Threshold (SPT).
4 Lim – Illuminates when the amplier is limiting the signal.
12. Rear panel
12 E SERIES Operation Manual rev 2.1.0
12. Rear panel
GPI GPO
POWERCHANNEL 1CHANNEL 2
-10dB -10dB
SIG
HIGH
PASS
Lo-Z
70V
FULL
RANGE
SIG
HIGH
PASS
Lo-Z
70V
FULL
RANGE
-Inf 0
-10dB
-Inf 0
-10dB
00-240V 50-60Hz
Locking IEC; must be grounded/earthed
Ser. N:o Removed!
BALANCED SPEAKER OUTPUTSBALANCED INPUTSPOWER STATE
CH 1CH 2
CH1CH2
CONTR OL MO NITOR E 12:2
DO NO T
CONNEC T ANY
TERMIN AL TO
GROUND.
CLASS 2 W IRIN G Audio Power Amplifier
for professional use
Desig ned in Sw eden
manufa ctured i n Thaila nd
4GC7
Power control
and indicator
GPIO
connectors
3-pole block
type input
connectors
Switches,
indicator and
attenuator per
channel
2-pole block
type output
connections
Mains input
100 -240
VAC,
@ 50 or 60 Hz
12.1. Power
The Power control button is located in the middle. When pressed momentarily it toggles the power state
between standby and on.
The Power state indicator is located to the right of the button. It illuminates amber as soon as the amplier reaches
standby, and turns green when the amplier is fully on.
POWER BALANCED SPEAKER OUTPUTS
CH 1CH 2
DO NOT
CONNECT ANY
TERMINAL TO
GROUND.
CLASS 2 WIRING
12. Rear panel
E SERIES Operation Manual rev 2.1.0 13
The following features are located on the rear panel of the E Series:
1 Attenuators – Individual attenuation for the two amplier channels. Range is 0 dB to -innity. The 12 o’clock
position indicates -10 dB attenuation. The sensitivity for the amplier is 4 dBu when the attenuator is at 0 dB and
14 dBu when the attenuator is at -10 dB.
2 SIG – The green indicator will be lit whenever the input signal is above the signal present threshold. Indication
is the same as the front panel indicator is currently playing.
3 High-pass / Full-range – Selects either at down to 2 Hz or High Pass lter at 50 Hz.
70 V / Lo-Z – This switch denes the settings for the Rail Sensing LimiterTM (RSL).
• 70 V should be used for constant voltage systems and if full rated power into 8 or 16 ohms loads is required.
• Lo-Z should be used for rated power into 2 or 4 ohms loads. It can also be used to limit the maximum power
into 8 or 16 ohms loads.
If more than half the total power is required for one channel driving an impedance of 4 ohms or higher, then the
70 V setting can be used for this channel.
Operation into 2 ohms is not recommended when using 70 V mode.
4 Output – The detachable output block connectors are designed and approved for 41 Arms (much more than
the maximum capacity of the ampliers). Cables up to 8 mm2 (8 AWG) may be used. Please ensure that all leads
are securely attached inside the connector to avoid short circuits. Also verify that the loudspeakers are connected
with the same polarity to avoid low frequency cancellation losses.
5 GPIO – The amplier comes with an Automatic Power On / Down APO / APD scheme triggered by the program
material, so in many applications external power control is not necessary. If remote power control is desired, then
an external relay can be connected to the GPI control port.
12.2. Input Signal Present Threshold (SPT)
As shipped the default input signal threshold is set at -56 dBu (-60 dB relative to 4 dBu, which is the sensitivity).
This threshold applies to the input signal present indicators on the front and rear panels as well as to the
Auto Power On / Down (APO / APD).
If this threshold is deemed too high or low, it can be trimmed by pressing and holding the power button for two
full seconds. The amplier will then sample the input signal and set the SPT threshold 6 dB above the sampled
noise oor. The procedure should be done with all “front end” equipment on, but with no active signal input. Please
ensure that no audio is accidently passed during this calibration as that can lead to a high SPT that in turn could
generate and store an undesirable threshold for APD.
A typical scenario for changing the default would be when the source has a very high noise oor. In this case,
adjusting the threshold prevents the noise from triggering a false APO. The calibration procedure detects the higher
noise oor and sets the SPT threshold at 6 dB above it.
13. Operation and performance
14 E SERIES Operation Manual rev 2.1.0
13. Operation and performance
13.1. Introduction
The following sections provide comprehensive information on amplier connection, setup, operation, and
performance. The detailed information included here is essential to realizing the full functionality of the
E Series ampliers.
13.2. Operating precautions
• Make sure that the amplier is off or in standby mode before making any input or output connections.
• This amplier is equipped with a Universal Power Supply that handles nominal voltages from 100 V to
240 V @ 50 - 60 Hz. It will turn on between 85 V – 264 V. For full power it requires 100 V or more, but it
will remain functional at voltages above 60 V with reduced output power.
13.3. Signal flow and headroom
All E Series ampliers have the same signal ow and feature set, differing only in the ability to deliver power to the
loudspeakers.
Balanced input
terminal
(17.2 dBu
headroom)
Attenuator
Bridged amplifier
(Gain depends
on RSL)
Rail Sense Limiter
(4 dBu for full
output Voltage)
High pass filter
(2 Hz / 50 Hz)
Loudspeaker
output terminal
This block also
implements the
protection
Clip, Thermal &
Rail sense
On all E Series ampliers, the input stage has a relatively high sensitivity of 4 dBu (1.23 Vrms) for full power.
However, the input can handle signals up to 17.2 dBu without clipping the input signal path. The amplier applies
low-distortion limiting if the input signal exceeds what is required to deliver full power. If compression isn’t desired,
use the input attenuator to trim the sensitivity. E Series ampliers easily achieve a high SPL when driven with
sources capable of 10 or 20 dBu output, such as professional mixing consoles or DSP units.
However, consumer sources such as a CD player or an MP3 player will have a lower output, typically -10 dBV or
-7.8 dBu. This is not sufcient level to realize full power from an E Series amplier. In this scenario, the user can
get closer to maximum power output by putting the mode switch in the 70 V position without risk of delivering
excessive power, even into a 2 or 4 ohm load.
13. Operation and performance
E SERIES Operation Manual rev 2.1.0 15
13.4. Audio input and output connections, setup and features
13.4.1. Balanced / unbalanced Input connection
BALANCED INPUTS
CH 1CH 2
Electronically balanced, Phoenix-type inputs are provided on all channels. Follow the +,– and Ground labels when
connecting the input signal.
If an unbalanced connection is desired this can be achieved by summing the minus (“COLD”) and Ground
terminals and using the + terminal as the “HOT” signal. For the best possible performance, the summing of ground
and minus wires should be done at the source unit end of the cable (e.g. a CD player).
Connectors are supplied for attaching cables to the inputs. Compatible input connectors are Phoenix Contacts,
Part number MSTB 2.5/3-STZ-5.08 , or Anytek OQ03545100CCG.
When linking the same source signal to several input channels, be aware that there is a limit to the number of
channels an output source can “drive”. A typical output source (e.g. a DSP crossover unit) can drive up to four
amplier channels before line-drivers would be required to boost the signal.
13.4.2. Output operation and connection
Detachable block-connectors with + and – poles are provided at each channel output for connection of the
speakers. If more conectors are needed, then these are compatible:
Phoenix 1709047, or Anytek KT02015000CCG.
Make sure that the speaker cables are connected correctly and tightly, and that accurate polarity is maintained to
all speakers in the system.
As the amplier outputs produce high voltage, do not connect or disconnect speaker cables when the mains
power is on.
13. Operation and performance
16 E SERIES Operation Manual rev 2.1.0
13.4.3. Output bridge mode and asymmetric loading
The E Series is designed with inherently bridged outputs for a high voltage swing, with full headroom accessed in
the 70 V mode. So, in some ways the amplier is a 4 channel amplier with permanently bridged outputs which
turns it into a 2 channel amplier. This design also accommodates asymmetric loading, wherein only one channel
can be connected and draw all power from the power supply. Alternatively, one channel can be connected and
congured as a “high power” channel while another is connected and congured as a “low power” channel. For
example, a 4 ohm loudspeaker could draw all the power available from the power supply in one channel when it is
the only loudspeaker connected to the amplier. If another channel is connected, any power used by this second
“low power” channel will limit the “high power” channel from using all available power.
The power available in each channel is determined by the setting of the RSL switch and the impedance of the
connected load. Power available per channel in some typical applications is shown in the following sample tables.
Note that because the two channels are identical, the channels given below are reversible. (If settings of channel 2
are same as for channel 1 shown below, then options for channel 1 are same as for channel 2 below.)
From one perspective, the functionality of asymmetric loading is very intuitive: essentially, power not used in one
channel is available through the other channel, but within limits determined by the load impedances for each
channel and the setting of the RSL switch. However, the possible combinations are many, and performance
limitations may apply in some scenarios.
The tables below illustrate power levels available in different scenarios with different ampliers. These are not
complete, but given only to illustrate the concept; more complete data for all three ampliers is given in
Section 14.3.
System example A: 70 V systems on both channels
Channel 1 Channel 2
Model RSL switch Load type Power
available RSL switch Load type Power
available
E 4:2 70 V 70 V 50 W 70 V 70 V 350 W
E 4:2 70 V 70 V 200 W 70 V 70 V 200 W
E 8:2 70 V 70 V 70 V 70 V 700 W100 W
E 8:2 70 V 70 V 0 W 70 V 70 V 800 W
E 12:2 70 V 70 V 200 W 70 V 70 V 1000 W
13. Operation and performance
E SERIES Operation Manual rev 2.1.0 17
System example B: 70 V system channel 1 plus one 8 ohm subwoofer (or other cabinet) channel 2
Channel 1 Channel 2
Model RSL switch Load type Power
available RSL switch Load type Power
available
E 4:2 70 V 70 V 50 W 70 V 8 ohms 350 W*
E 4:2 70 V 70 V 300 W 8 ohmsLo-Z 100 W
E 8:2 70 V 70 V 200 W 70 V 8 ohms 600 W
E 12:2 70 V 70 V 900 W 8 ohms 300 WLo-Z
E 12:2 70 V 70 V 600 W 70 V 8 ohms 600 W
System example C: 70 V system channel 1 plus two 8 ohm subwoofers (or cabinets) in parallel for
4 ohms channel 2
Channel 1 Channel 2
Model RSL switch Load type Power
available RSL switch Load type Power
available
E 4:2 70 V 70 V 70 V 4 ohms 300 W*100 W
E 8:2 70 V 70 V 300 W 70 V 4 ohms 500 W*
E 8:2 70 V 70 V 400 W 4 ohms 400 WLo-Z
E 12:2 70 V 70 V 400 W 70 V 4 ohms 800 W*
E 12:2 70 V 70 V 600 W 4 ohms 600 WLo-Z
System example D: Two 8 ohm cabinets in parallel for 4 ohms channel 1 and one 8 ohm subwoofer
(or cabinet) channel 2
Channel 1 Channel 2
Model RSL switch Load type Power
available RSL switch Load type Power
available
E 4:2 Lo-Z 4 ohms 200 W 70 V 8 ohms 200 W*
E 8:2 4 ohms 400 W 70 V 8 ohms 400 WLo-Z
E 8:2 4 ohms 200 W * 70 V 8 ohms 600 WLo-Z
E 12:2 Lo-Z 4 ohms 600 W 70 V 8 ohms 600 W
E 12:2 70 V 4 ohms 900 W* 8 ohms 300 WLo-Z
*: Use of external limiter recommended with these examples. Otherwise, depending on the program material,
the amplier may temporarily try to deliver more power with resulting pumping.
14. Appendices
18 E SERIES Operation Manual rev 2.1.0
13.4.4. Constant Voltage 70 V system setup and operation
When using E Series ampliers to drive constant voltage (high-impedance) speaker systems at 70 Vrms or 100 V
peak, in most cases you can simply connect the speakers to the amplier output terminals, select the 70 V RSL
setting, and place the amplier in service.
Limiters - Limiting is applied to avoid distortion at the selected voltage limit threshold and to avoid hitting the rail if it
has sagged below the selected threshold.
Limiting also may be applied when maximum output current has been reached or when the mains voltage is too
low to maintain required rail voltage. Limiting activity is shown by the front panel Limiter LED.
13.4.5. Output Current Peak Limiter (CPL)
The Current Peak Limiter (CPL) ensures that the amplier will not be damaged by trying to deliver current to the
outputs exceeding the physical limitations of the output devices. The CPL keeps the amplier within the Safe
Operating Area. The CPL is non-adjustable and has different limit values depending on model type. The maximum
output current values for the three E Series models are:
• E 12:2, 18 Arms per channel
• E 8:2, 16 Arms per channel
• E 4:2, 14 Arms per channel
14. Appendices
14.1. Maintenance
During normal operation your E Series amplier will provide trouble-free service. The only user maintenance
required is to periodically vacuum clean the air inlets in the front.
In some extreme cases it may be necessary for authorized service personnel to clean the inside of the amplier in
order to safely remove dust or other build ups which may occur during prolonged normal usage. If you are using
your amplier in a heavy duty application, it is recommended to have your amplier cleaned inside every 3 years
purely as a preventative action.
14. Appendices
E SERIES Operation Manual rev 2.1.0 19
14.2. Thermal dissipation
E 8:2
Level Load Output power Line
current *2) Watt *1) Thermal Dissipation
120 VAC 230 VAC In Out Dissi-
pated BTU/hr kCal/hr
Standby w. remote Power Off.
0.033 0.72 0.70 2.5 0.6
0.016 0.38 0.30 0.4 1.3
Power on, Idling
0.183 20.7 20.70 70.5 17.8
0.315 21.9 21.90 74.7 18.8
Pink Pseudo
Noise (1/8)
70 V / Ch. x 2400 1.2 139 134100 39 34
2.1 148 100 48 163 41
16 ohms / Ch. x 2 310
0.9 112 11978 35 30
1.8 118 11978 35 30
8 ohms / Ch. x 2 400 1.2 140141 41100 35
2.0 148 100 48 164 41
4 ohms / Ch. x 2 400 1.3 149 100 49 166 42
2.1 155 100 55 187 47
2 ohms / Ch. x 2 400
1.4 172 100 72 244 61
2.3 174 74100 254 64
*1) The amplier ’s PSU operates as a non- resistive load, so the calculation “Volts x Amps = Watts” would not be c orrect. Instead, me asured and specied here
is wh at is known as the “Active Power” in the amplier providing u seful, real- worl d values of power co nsumption and heat dis sipation.
*2) Curre nt draw gures measured at 230 V. as well as 120 V. Th e ef ciency i s similar, but not ide ntic al for the two s cen arios. The efciency fo r 100 V mains i s
very similar to t hat of 120 V.
E 4:2
Level Load Output power Line
current *2) Watt *1) Thermal Dissipation
120 VAC 230 VAC In Out Dissi-
pated BTU/hr kCal/hr
Standby w. remote Power Off.
0.32 0.7 0.720 2.5 0.6
0.016 0.38 0.30.4 0 1.3
Power on, Idling 0.186 21.5 21.50 73.3 18.5
0.306 22.4 22.40 76.6 19.3
Pink Pseudo
Noise (1/8)
70 V / Ch. x 2200
0.7 80 50 30 101 26
1.1 86 3650 123 31
16 ohms / Ch. x 2 200
0.7 80 50 30 101 26
1.1 85 3550 118 30
8 ohms / Ch. x 2 200 0.7 81 50 31 105 26
1.1 87 50 37 125 32
4 ohms / Ch. x 2 200
0.8 89 50 39 133 34
1.2 14492 50 42 36
2 ohms / Ch. x 2 200 0.8 98 50 48 165 42
1.3 100 50 50 172 43
*1) The amplier ’s PSU operates as a non- resistive load, so the calculation “Volts x Amps = Watts” would not be c orrect. Instead, me asured and specied here
is wh at is known as the “Active Power” in the amplier providing u seful, real- worl d values of power co nsumption and heat dis sipation.
*2) Curre nt draw gures measured at 230 V. as well as 120 V. Th e ef ciency i s similar, but not ide ntic al for the two s cen arios. The efciency fo r 100 V mains i s
very similar to t hat of 120 V.
14. Appendices
20 E SERIES Operation Manual rev 2.1.0
E 12:2
Level Load Output power Line
current *2) Watt *1) Thermal Dissipation
120 VAC 230 VAC In Out Dissi-
pated BTU/hr kCal/hr
Standby w. remote Power Off.
0.032 0.70 0.70 2.4 0.6
0.019 0.3 0.30.31 0 1.1
Power on, Idling 0.183 20.7 20.70 70.5 17.8
0.315 21.9 21.90 74.7 18.8
Pink Pseudo
Noise (1/8)
70 V / Ch. x 2600
1.8 210 150 60 205 52
2.9 223 150 73 248 62
16 ohms / Ch. x 233
1.1 128 83 45 154 39
1.8 136 83 54 183 46
8 ohms / Ch. x 2600 1.8 209 150 59 202 51
2.9 219 150 59 237 60
4 ohms / Ch. x 2600
1.9 222 150 72 245 62
2.9 226 150 76 259 65
2 ohms / Ch. x 2600
2.0 249 150 99 337 85
3.1 252 150 102 349 88
*1) The amplier ’s PSU operates as a non- resistive load, so the calculation “Volts x Amps = Watts” would not be c orrect. Instead, me asured and specied here
is wh at is known as the “Active Power” in the amplier providing u seful, real- worl d values of power co nsumption and heat dis sipation.
*2) Curre nt draw gures measured at 230 V. as well as 120 V. Th e ef ciency i s similar, but not ide ntic al for the two s cen arios. The efciency fo r 100 V mains i s
very similar to t hat of 120 V.
14.3. Asymmetric loading data
Pages 21-23 following list possible settings and load combinations for asymmetric loading. For an explanation of
asymmetric loading, please see Section 13.4.3.
For values followed by an asterisk (*), use of an external limiter may be required for optimum performance.
All values assume amplier is being driven by a signal from a professional mixing console or DSP unit. Values
will differ if driven by a consumer device, such as an iPod, with signicantly lower output (2.71 dBu instead of the
required 4 dBu).
14. Appendices
22 E SERIES Operation Manual rev 2.1.0
E 8:2
14. Appendices
E SERIES Operation Manual rev 2.1.0 23
E 8:2
14. Appendices
24 E SERIES Operation Manual rev 2.1.0
14.4. Technical specifications
General E 12:2 E 8:2 E 4:2
Number of powered channels 2 2 2
Total output all channels driven 1200 W 800 W 400 W
Max output voltage per channel 100 V / 70 Vrms 100 V / 70 Vrms 100 V / 70 Vrms
Max. output current per channel 18 Arms 16 Arms 11 Arms
Max. Output Power (all ch.’s driven)
2 ohms (Lo-Z mode) 600 400 200
4 ohms (Lo-Z mode) 600 400 200
8 ohms (Hi-Z mode) 600 400 200
16 ohms (Hi-Z mode) 310 290 200
70 V (Hi-Z mode) 600 400 200
8 ohms (Lo-Z mode) 300 200 100
16 ohms (Lo-Z mode) 150 100 50
Performa nce
THD 20 Hz - 20 kHz at 1 W into 8 ohms <0.1% <0.1% <0.1%
THD at 1 kHZ and 1 dB below clipping <0.05% <0.05% <0.05%
Signal to noise ratio >112 dBA >112 dBA >112 dBA
Channel separation (Crosstalk) at 1 kHz >70 dB >70 dB >70 dB
Frequency response 2 Hz - 40 k Hz 2 Hz - 40 k Hz 2 Hz - 40 k Hz
Input impedance 20 kOhm 20 kOhm 20 kOhm
Input comm on mode rejection, CMR 50 dB 50 dB 50 dB
Output impedance 25 mOhm 25 mOhm 25 mOhm
Gain , Sensitivity and Limiters
Limit and gain switch (per channel) 2 pos: Lo-Z and Hi-Z 2 pos: Lo-Z and Hi-Z 2 pos: Lo-Z and Hi-Z
VPL for Hi-Z mode 100 V 100 V 100 V
VPL for Lo-Z mode 56.6 V 40.0 V69.3 V
Sensitivity for 70 V out in Hi-Z mode 4 dBu 4 dBu 4 dBu
Sensitivity for full power into 4/8/16 ohms in Lo-Z mode 4 dBu 4 dBu 4 dBu
Gain in Hi-Z mode 35.2 dBu 35.2 dBu 35.2 dBu
Gain in Lo-Z mode 32.0 dB 30.3 d B 27.2 dB
Level adjustment (per channel) Rear panel potentiometer, detented from -inf to 0 dB
Conn ectors and switches
Input connectors (per ch.) 3-pin detachable screw ter minals , electronically balanced
Output connectors (per ch.) 2-pin detachable screw terminals
High pass lter Fixed at 35 Hz, switchable per channel
Power control Can be used to go between standby and ON
GPI (power control input) Contact closure type, 2-pin detachable screw terminal, controls the power state
GPO (power state output) Contact closure type, 2-pin detachable screw terminal, for external monitor ing of the power state
Cooling Single fan, front to rear airow, no lter required , temperature controlled speed
Power
Nominal voltage 100 - 240 VAC 100 - 240 VAC 100 - 240 VAC
Operating voltage 70 - 265 VAC 70 - 265 VAC 70 - 265 VAC
Standby consumption <1 W <1 W <1 W
Mains connector IEC inlet
Dimensions W: 483 mm (19”), H: 44 mm (17”), D: 276 mm (10.9”)
Weight 4.2 kg (9.3 lbs.) 4.1 kg (9 lbs.) 4 kg (8.8 lbs.)
Finish Dark grey aluminium front and black steel chassis
Approvals CE, RoHS, WEEE, UL 60065, CSA C22.2 No 60065, FCC part 15 Subpart B Class A, PSE, CCC, Energy Star 3.0
Warranty 3 years, components and factory workmanship. See full warr anty statement.
All spec ica tions are subject to change w ithout notice.

Termékspecifikációk

Márka: Lab Gruppen
Kategória: Vevő
Modell: E 12:2

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