SE Audiotechnik I-Line Series User manual

IA 202D
IA 402D
Instruction Manual
I-Line
Elegant installation speaker systems
Elegant installation speaker systems
Firmware version: 1.0
Revision: 3.0

IA 202D / IA 402D Instruction Manual
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Copyright © 2018 SE Audiotechnik®. All Rights Reserved.
If you find any issues, bugs and typos, they are welcome to be reported to the
following email address: [e-mail]
Keep this manual with the product or in a safe place so that it is available for future
reference.
We recommend you to regularly check the SE Audiotechnik website for the latest
version of the firmware and documentation such as this instruction manual.
When reselling this product, hand over this manual to the new owner.
If you supply SE Audiotechnik products, please draw the attention of your customers
to this manual. Enclose the relevant manuals with the systems. For more information and
help, please contact us: [e-mail]
SE Audiotechnik® Headquarters
Neuenhofer Straße 42-44,
Solingen, 42657
Germany
Phone: [phone]
SE Audiotechnik® CHINA SERVICE CENTER
No. 8 Development Zone Road,
Huimin Sub-district, Jiashan, Zhejiang,
314112,
China
Phone: [phone]
SE Audiotechnik® is a trademark of Speaker Electronic (Jiashan); Co., Ltd.

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Contents
1. Important Safety Instructions.................................................................................................... 4
2. Introduction .............................................................................................................................. 6
3. Overview .................................................................................................................................. 8
3.1. Front Panel ....................................................................................................................... 8
3.2. Rear Panel ........................................................................................................................ 9
4.1. Package Contents ........................................................................................................... 10
4.2. Unpack Your Amplifier .................................................................................................... 10
4.3. Installation ..................................................................................................................... 10
4.4. Handling ......................................................................................................................... 11
5.1. Controls & User Interface ............................................................................................... 11
6. Screen Items & Operation ....................................................................................................... 12
6.1. Overview ........................................................................................................................ 12
6.2. Main Menu ..................................................................................................................... 13
6.3. DSP Settings ................................................................................................................... 13
6.3.1. Input Sensitivity ..................................................................................................... 13
6.3.2. Input Routing ......................................................................................................... 13
6.3.3. Channel A / B ......................................................................................................... 14
6.3.3.1. Preset ............................................................................................................ 14
6.3.3.1.1. Preset Loading ............................................................................................ 15
6.3.3.1.2. Preset Saving .............................................................................................. 15
6.3.3.1.3. Preset Information ..................................................................................... 16
6.3.3.2. Input Level ..................................................................................................... 16
6.3.3.3. HP/LP Filter .................................................................................................... 17
6.3.3.4. Phase Inversion .............................................................................................. 17
6.3.3.5. Equalizers (EQ 1 to EQ 5) ................................................................................ 17
6.3.3.6. Delay ............................................................................................................. 18
6.3.3.7. Reset User Params ......................................................................................... 18
6.3.4. Both Channels ........................................................................................................ 19
6.3.4.1. Link Channels ................................................................................................. 19
6.3.4.2. Load Preset .................................................................................................... 19
6.3.4.3. Reset User Params ......................................................................................... 20
6.3.5. Delay Settings ........................................................................................................ 20
6.4. System Settings .............................................................................................................. 21
6.4.1. LCD Backlight ......................................................................................................... 21
6.4.2. LCD Brightness ....................................................................................................... 21
6.4.3. Reset ...................................................................................................................... 21
6.4.4. HW Information ..................................................................................................... 22
6.4.5. Firmware Update ................................................................................................... 22
6.4.6. Lock ....................................................................................................................... 22
7. Other Functions ...................................................................................................................... 23
7.1. Screen locking/unlocking ................................................................................................ 23
7.2. Quick Output Level Change ............................................................................................. 23
7.3. Quick Mute ..................................................................................................................... 23
8. Signal Flow Diagram ................................................................................................................ 24
9. Menu Tree .............................................................................................................................. 25
10. Mechanical Dimensions ...................................................................................................... 26

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1. Important Safety Instructions
Explanation of graphical symbols
The lightning bolt triangle is used to alert the user to the risk
of electric shock.
The exclamation point triangle is used to alert the user to
important operating or maintenance instructions.
The CE-mark indicates the compliance with the low voltage
and electromagnetic compatibility.
Symbol for earth/ground connection.
Symbol indicating that the equipment is for indoor use only.
Symbol for conformity with Directive 2002/96/EC and
Directive 2003/108/EC of the European Parliament on waste
electrical and electronic equipment (WEEE).
Main Electrical Safety Precautions
THE MAINS PLUG OF THE POWER SUPPLY CORD MUST REMAIN
READILY ACCESSIBLE.
DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE, DRIPPING
OR SPLASHING LIQUIDS. OBJECTS FILLED WITH LIQUIDS, SUCH AS
VASES, SHOULD NOT BE PLACED ON THIS APPARATUS.
WARNING: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT
ATTEMPT TO OPEN ANY PART OF THE UNIT. NO USER-SERVICEABLE
PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
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.

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This unit has been engineered and manufactured to ensure your personal safety. But
IMPROPER USE CAN RESULT IN POTENTIAL ELECTRICAL SHOCK OR FIRE HAZARD.
Always follow the basic precautions listed here to avoid the possibility of serious injury or
even death from electrical shock, short-circuiting, damages, fire or other hazards. These
precautions include, but are not limited to, the following items in this chapter.
Important Safety Instructions
1. Keep these instructions.
2. Read these instructions.
3. Follow all instructions.
4. Heed all warnings.
5. Do not use this apparatus near water.
6. Clean only with a dry cloth. Disconnect the device from the AC outlet before cleaning.
Do not use paint thinners, solvents, cleaning fluids, or chemical-impregnated wiping
cloths.
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 amplifiers) that produce heat.
9. Do not defeat the safety purpose of the grounding-type plug. A grounding-type plug
has two blades and a third grounding prong. The third prong is provided for your
safety. If the provided plug does not fit 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 specified by the manufacturer.
12. Use only with the cart, stand tripod, bracket, or table specified 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 qualified service personnel. Servicing is required when the
apparatus has been damaged in any way, such as power-supply cord or plug is
damaged, liquid has been spilled or objects have fallen into the apparatus, the
apparatus has been exposed to rain or moisture, does not operate normally, or has
been dropped.
15. Use the mains plug to disconnect the apparatus from the mains.
16. Do not insert your fingers, hands or any other foreign objects into any gaps or
openings of the device.

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2. Introduction
IA 202D and IA 402D are two system amplifiers as part of SE Audiotechnik installation
series I-Line. This instruction manual explains the core functionality and features of the
amplifiers.
Please check if your amplifiers are equipped with the latest firmware version as the
firmware is being improved and updated. Contact your dealer for more information.
2.1. Features
Both system amplifiers are equipped with a simple to use LCD screen and rotary knob
controller in a simple and unobtrusive aluminum housing. Both amplifiers have both Phoenix
and SPEAKON type loudspeaker output terminals.
Built-in 24bit/48kHz DSP processing provides amplifier with controlled signal
processing and limiting. Two models are available: IA 202D (2 x 250W @ 8Ω) and IA 402D (2
x 400W @ 4Ω). The amplifiers were designed to power I-Line installation columns IC 32 and
IC 34. Additional FLAT speaker preset allows to configure the amplifier to be used with 3rd
party loudspeakers, if necessary.

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2.2. Technical Specifications
Parameter / Value
IA 202D
IA 402D
Type
Class-D, SMPS
Power Output
2 x 250W @ 8 Ω
2 x 125W @ 16 Ω
2 x 400W @ 4 Ω
2 x 200W @ 8 Ω
2 x 100W @ 16 Ω
Minimum Load Impedance
8 Ω
4 Ω
Input Impedance
20 kΩ balanced, 10 kΩ unbalanced
SNR (At rated power)
95 dB
Crosstalk
64 dB
62 dB
DSP
48 kHz, 24-bit DSP processor, processing latency: 1.1 ms
Signal Processing
Speaker presets, Delay, High-Shelf, Low-Shelf, High-Pass, Low-Pass,
Parametric Equalizer, RMS Limiter, Peak Limiter, Phase Invert, Mute,
Output Gain
Controls
Digital encoder with push button
Maximum Input Level
+20dBu
Signal Connectors
XLR 3-pin male line-level inputs/link outputs,
Phoenix Contact MSTB 3-pin inputs/link outputs
Speaker Connectors
Neutrik SpeakON® NL4 outputs, Phoenix Contact MSTB 4-pin outputs
Protection
short-circuit, over-heating, over-current
Cooling
Sensor controlled fan, front-to-back air flow
Power Efficiency
76%
83 %
Power Consumption (Idle, Full
Power)
29 W / 600 W
30 W / 1000 W
Power Requirements
100 – 120 VAC 50/60 Hz
220 - 240 VAC 50/60 Hz
Dimensions (W x H x D)
483 x 66 x 256 mm / 1.5 HU
Weight
4.7 kg (netto)
5.1 kg (netto)
*All product specifications in this document are subject to change without notice.

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3. Overview
3.1. Front Panel
123
45
1. Alpha-numeric LCD screen. 2. Master Control rotary encoder with push button. 3. Power switch 4. Air-intake fan. 5. Air-intake vents.

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3.2. Rear Panel
2 3 7
4
156 10 11 12 13
8 9 14 15 16 17
10. Input: Channel B XLR Female 11. Link/Thru: Channel B XLR Male 12. Input: Channel A XLR Female 13. Link/Thru: Channel A XLR Male 14. Input: Channel B Euroblock/Phoenix
15. Link/Thru: Channel B Euroblock/Phoenix
16. Input: Channel A Euroblock/Phoenix
17. Link/Thru: Channel A Euroblock/Phoenix
1. AC power connector. 2. Fuse. 3. Fan. 4. Output: Channel B SpeakON 5. Output: Channel A & B SpeakON 6. Output: Channel A SpeakON 7. Output: Channel B Euroblock/Phoenix 8. Output: Channel A & B Euroblock/Phoenix 9. Output: Channel A Euroblock/Phoenix

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4. Setup & Installation
4.1. Package Contents
The packaging of the amplifier contains of:
• I-Line amplifier IA 202D or IA 402D
• IEC type power cord
• Attachable rubber feet
• Instruction manual
• Warranty card
4.2. Unpack Your Amplifier
Please inspect your amplifier packaging for any damage that may have occurred
during transit. If damage is found, notify the transportation company immediately. Only you
can initiate a claim for shipping damage. If the packaging got damaged upon transit please
unpack the amplifier and check it for any visual damage before using it. Save the shipping
carton as evidence of damage for the shipper’s inspection.
Contact your SE Audiotechnik dealer or SE Audiotechnik support center for help and
assistance.
We recommend that you save all packing materials and full package contents if you
ever need to transport the amplifier. This also includes:
• Power cable
• Attachable rubber feet
• Instruction manual
4.3. Installation
• The recommended use of the device is in fixed or portable 19” rack.
• When the device is not installed in a rack, attach the provided rubber feet to the
bottom of the housing.
• Leave at least 30cm space at the back of the amplifier for proper airflow.
• Do not use the device in a confined, poorly-ventilated location.
• Do not block the air intake / blow-out holes. This device has ventilation holes at
the front/rear to prevent the internal temperature from becoming too high. In
particular, do not place the device on its side or upside down. Inadequate
ventilation can result in overheating, possibly causing damage to the device, or
even fire.

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4.4. Handling
• Do not rest your weight on the device or place heavy objects on it, and avoid the
use of excessive force on the buttons, switches or connectors to prevent injuries
or device damage
• Condensation can occur in the device due to rapid, drastic changes in ambient
temperature when the device is moved from one location to another, or air
conditioning is turned on or off, for example. Using the device while
condensation is present can cause damage. If there is reason to believe that
condensation might have occurred, leave the device for several hours without
turning on the power until the condensation has completely dried out.
• Rapidly turning the unit on and off in succession can cause it to malfunction.
After turning the unit off, wait for more than five seconds before turning it on
again
• Do not use this device for any other purpose than driving loudspeakers!
5. Operation
5.1. Controls & User Interface
Controlling of the power amplifier is done with rotary control encoder with push
button and 4x20 symbol alpha-numeric LCD screen. Further chapters explain menu operation
and features. Several cursors & symbols are being used throughout the menu structure:
• “>” a cursor pointed to the current point of action,
• “*” a cursor displaying a selection (for presets or settings) and when the
parameter editing is enabled,
• “ ← ” deletion cursor when editing preset names,
• “L” displaying amplifier locked status in the Overview screen.

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6. Screen Items & Operation
6.1. Overview
The Overview menu/screen is the default screen showed on the amplifier LCD during
normal operation (Figure 1).
Figure 1. Overview Screen.
Various information is displayed on the screen:
• “L” Letter in top right-corner displays amplifiers Lock state. When the amplifier screen
is locked the “L” letter is present in the top-right corner of the Overview screen,
• Output level of the amplifier is displayed in the second and third row. When the limiter
threshold is reached and gain reduction is applied to the signal “LIM” letters show up
at the end of the scale. The backlight of the screen blinks calling for user attention. If
the channels are muted, the level display meters are replaced with the text “MUTED”.
• On the bottom-left part of the screen Input Routing mode is shown.
• When clipping occurs the level is replaced with “INPUT CLIP” text and the backlight of
the amplifier blinks thus calling for user attention.
Further actions from the Overview screen can be:
• Scrolling the rotary knob and thus adjusting both channel output levels by the
same amount. Change delta in dB is shown.
• Pressing & holding the rotary controller knob to enter MENU.
If the screen is unlocked “>” arrow appears enabling user to go to the next view where
currently active presets for each channel are shown.
Figure 2. Active Presets View.
By clicking “Next” one or two more times user can access individual output level
adjustments for both channels A and B.
Figure 3. Channel Output View.
Here user can adjust per channel output gain level or mute the channel. Clicking
“Next” from channel B Output view will return back to Overview screen.
OVERVIEW L
A:-24 -12 -6 -3 LIM
B:-24 -12 -6 -3 LIM
Mode: INV. ST > NEXT
ACTIVE PRESETS
ChA: IC 34: DEFAULT
ChB: IC 32: DEFAULT
> NEXT
CHANNEL A OUTPUT
-24 -12 -6 -3 -1 LIM
GAIN: 0.0 dB <
MUTE: Off NEXT

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6.2. Main Menu
To enter the menu of the amplifier, press & hold Master Control rotary knob for 3
seconds. A menu as shown in Figure 4 will appear on the LCD Screen.
Figure 4. Main Menu
Two types of settings can be accessed from here:
• DSP Settings – signal processing settings such as channel presets, filters, EQ, delay
are configured here,
• System Settings – power amplifier operation settings are configured here.
6.3. DSP Settings
DSP Settings menu is shown in Figure 5.
Figure 5. DSP Settings menu.
6.3.1. Input Sensitivity
Input Sensitivity menu allows user to change amplifier’s reference sensitivity. Two
options are available:
• Pro Audio reference level (+4 dBu or ~1.23 V)
• Consumer device reference level (-10 dBV or 0.316 V)
Figure 6. Sensitivity Settings Menu.
6.3.2. Input Routing
In the Input Routing menu the routing of input signals is defined. Several options are
available:
• Stereo
• Mono (A+B). The level is reduced by -6 dB to compensate for summing
MENU
> DSP Settings
System Settings
Exit
DSP SETTINGS
> Back
Input Sensitivity
Input Routing
Channel A
Channel B
Both Channels
Delay Settings
Exit
SENSITIVITY
Back
> +4 dBu *
-10 dBV

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• Inv. Stereo (Inverse Stereo). This setting swaps A & B inputs
• Mono A
• Mono B
Figure 7. Input Routing Menu.
6.3.3. Channel A / B
Channel A and Channel B menu are identical and contain channel dependent signal
controls for each channel. Here only Channel A is shown to explain its contents.
Figure 8. Channel A or B Menu.
6.3.3.1. Preset
Preset menu allows to load speaker presets. The presets are divided in two basic types:
• Factory presets. Marked with an “F” letter at the right side of the preset name
• User presets: Marked with an “U” letter at the right side of the preset name.
Currently loaded preset is marked with a “*” star symbol.
Figure 9. Channel Preset Menu.
INPUT ROUTING
Back
> Stereo *
Inv Stereo
Mono (A+B)
Mono A
Mono B
CHANNEL A
> Back
Preset
Input Gain
HP Filter
Phase Inversion
EQ 1: Low-Shelf
EQ 2: Parametric
EQ 3: Parametric
EQ 4: Parametric
EQ 5: High-Shelf
Delay Settings
Reset User Params
CHANNEL A PRESET
Back
> IC 32: DEFAULT F*
IC 34: DEFAULT F
IC 32:Junpu Bar U
IC 34:LoungeChA U
IC 34:123456789 U
EMPTY: USER 1 U
EMPTY: USER 2 U

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The names of the presets are organized in such a way that first five symbols would
always represent loudspeaker model for which the preset is made. This is due to the safety
reason so that user always knows if his user preset has the right factory settings.
Factory presets are each speaker systems default configuration with factory pre-
defined filter & limiter settings layer. User presets are being built on top of factory presets by
saving additional user adjustment layer containing:
• User HP filter settings
• User EQ settings
• User Delay settings
6.3.3.1.1. Preset Loading
To load a preset scroll to the chosen preset and click the rotary controller. A dialogue
is displayed on the screen to either load preset, save preset or go back. Saving is only available
in user preset area to save user presets.
By pressing Load Preset the preset is loaded in the DSP and “Preset Loaded!” is
displayed shortly on the screen.
To return choose Back and click the rotary controller.
Figure 10. Preset Loading.
6.3.3.1.2. Preset Saving
To save a preset choose one of the existing or empty user preset locations and click
the rotary controller. A dialogue similar to factory preset loading is displayed on the screen,
only in this case an additional option is available to save the preset.
Figure 11. Preset Loading & Saving.
By click on Save Preset a dialogue to enter preset name is displayed.
Here user can edit last 9 symbols to write a note or name for the user preset. To edit
the name click on the name with rotary controller. Character selection is done by scrolling the
controller and choosing the letter by clicking. Character deletion is performed by choosing
the “
←
” symbol and clicking. To complete the editing of the name choose space symbol and
click twice.
To confirm preset saving choose Save and click the rotary controller. Saving is
confirmed with a display on the screen “Preset Saved!”
FACTORY PRESET
IC 34: DEFAULT
Back
> Load Preset
USER PRESET
EMPTY: USER 1
Back
Load Preset
> Save Preset

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Figure 12. Preset Saving Menu.
6.3.3.1.3. Preset Information
By pressing 3 seconds on the selected preset a dialog shows up displaying various
information about the preset. Currently only Date, Version and Author is displayed and shall
be used to ensure that speaker presets are up to date.
Figure 13. Preset Information Menu.
6.3.3.2. Input Level
The Input Level menu allows to check the input signal level of the corresponding
channel. It displays the level at the input stage of the signal chain. IA 202D and IA 402D
amplifiers are capable of input levels up to +20 dBu.
Figure 14. Channel Input Level Menu.
T menu displays input level in dBFS scale after it has been converted in to digital
domain for DSP. When the level is equal to -24, -12, -6, -3 and -1 dBFS a corresponding level
threshold is displayed. To avoid input clipping set your levels depending on the program
material and leave the headroom of at least 6 dB for loudest peaks. Nominal input level shall
be around -12 dB.
When clipping occurs a ”CLP” text is displayed at the end of metering scale. Avoid this
high input levels on all means since it causes hard-clipping and causes severe signal distortion!
Be aware that to increase signal-to-noise ratio a professional line level signal (ref. +4
dBu) shall be used!
By scrolling the rotary controller user can select between 2 choices:
• MUTE. When chosen the user can change the MUTE status of the channel output
from Off to On. Click to exit/confirm.
• Back. Returns to the corresponding channel menu.
SAVE USER PRESET
> IC 34:_USER_1__←
Back
Save
PRESET INFORMATION
> Back
IC 32: DEFAULT F
Date: 20170629
Version: 0.6
Author: 01
CHANNEL A INPUT
-20 -10 -6 -3 -1 CLP
MUTE: Off > Back

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6.3.3.3. HP/LP Filter
Selected channels high-pass (low-cut) or low-pass (high-cut) filter settings can be set
in the HP/LP Filter menu.
Figure 15. HP/LP Filter Menu.
Three main parameters can be changed here:
• Type. Either HPF (high-pass filter) or LPF
• Filter Order: User can select between 12dB/Octave or 24 dB/Octave filter slopes.
• Frequency: User can select the cut-off (-3dB) point of the filter up to 150 Hz.
6.3.3.4. Phase Inversion
Figure 16. Phase Inversion Menu.
The Phase Inversion menu allows to switch signal phase for the corresponding
channel. Also known as polarity reverse. Two settings are available:
• Normal. In phase setting.
• Inverted. In this setting phase/polarity is inverted (180° phase shift for all
frequencies).
6.3.3.5. Equalizers (EQ 1 to EQ 5)
Each of IA 202D / IA 402D amplifier channels a have dedicated user equalizer section
consisting of 5 fixed configuration equalizers:
• 1x (EQ 1) Low-shelf equalizer (Gain, Frequency)
• 3x (EQ 2, EQ 3, EQ 4) Fully parametric equalizers (Gain, Frequency, Q)
• 1x (EQ 5) High-shelf equalizer (Gain, Frequency)
To modify equalizer parameters, enter the corresponding equalizer menu and modify
its parameters. Each equalizer band can be individually bypassed (default setting).
Figure 17. Parametric Equalizer Menu.
CH A HP/LP FILTER
Back
Type: HPF
> Order: 12dB/Oct
Freq: 60 Hz
Bypass: ON
CHANNEL A Phase
Back
> Normal *
Inverted
CHANNEL A PEQ 1
Back
Bypass: On
> Gain: 6 dB
Frequency: 60 Hz
Q: 1

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An example of parametric equalizer 1 (EQ 2: PEQ 1) is shown. Here four different
parameters can be edited:
• Bypass. On – the equalizer band is bypassed. Off – the equalizer band is
active,
• Gain. Allows to change the boost/cut of the frequency band by +/- 10 dB,
• Frequency. Allows to change the center or edge frequency (for High-shelf and
Low-shelf) of the band,
• Q. The opposite of the bandwidth. Higher Q values mean narrower bandwidth
(for parametric equalizers only).
6.3.3.6. Delay
The Delay section allows user to apply signal delay for the corresponding channel.
Three different states of delay configuration are available:
• Bypassed (If the channel delay is bypassed only system latency is shown)
• Single (Minimum delay of 1 sample)
• Double (Minimum delay of 2 samples)
For more information about delay settings please refer to section 6.3.5 Delay Settings.
Figure 18. Channel Delay Menu.
In chosen channels Delay menu user can see and adjust the delay of the channel in 3
different ways:
• Samples. (1-700 in Single mode and 2-1400 in Double)
• Time. Delay in milliseconds (ref. to 48 kHz)
• Distance. Delay in meters (ref. to c=344 m/s)
Channel delay menu shows total introduced latency of the system including delay,
system latency & look-ahead limiter. IA 202D / IA 402D amplifiers have fixed minimum latency
of 52 samples (1.07 ms). Depending on the loaded preset look-ahead limiter latency is added
to the channel delay (up to 2 ms, 96 samples). This allows the user to know the total system
latency at any time.
6.3.3.7. Reset User Params
The Reset User Params menu allows to reset all current channel user DSP settings such
as:
• HP Filter
• Equalizers
• Delay
• Input Gain
• Phase Inversion
CHANNEL A DELAY
Back
> Samples: 650
Time: 13.54 ms
Distance: 4.64 m

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Figure 19. “Reset User Parameters” Menu.
6.3.4. Both Channels
The Both Channels section allows to perform certain operations for both channels
simultaneously.
6.3.4.1. Link Channels
IA system amplifiers allow to link certain parameters for both channels, those
currently include:
• HP/LP Filter.
• User EQ.
• Delay.
• Or All of above.
Figure 20. Channel Link Menu.
This allows for easier and faster operation when the settings in both channels need
to be identical.
6.3.4.2. Load Preset
In a similar way as presets are managed and loaded for individual channels Load Preset
enables user to load the same preset in both channels at once. Currently only Loading of both
channels is supported.
Figure 21. Both Channels Preset Menu.
Here the currently loaded presets are also shown as “A” or “B” letters next to the
preset type. If the same preset is active in both channels it is shown with a star symbol “*”.
Reset Channel A User
Parameters?
(DLY,EQ,Filters
Phase Inversion)
Back
> Reset
LINK CHANNELS
Back
> HP Filter *
User EQ
Delay *
All
BOTH CHANNEL PRESET
Back
> IC 32: DEFAULT F
IC 34: F
SM 12:123456789 F
IC 32:Junpu Bar U
IC 34:LoungeChA UA
IC 34:LoungeChB UB
EMPTY: USER 1 U
EMPTY: USER 2 U

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6.3.4.3. Reset User Params
This menu allows to reset user DSP settings for both channels at once as shown in the
section 6.3.3.7.
6.3.5. Delay Settings
Both IA 202D and IA 402D system amplifiers have maximum delay memory of 1400
samples. As the need of delay is depending on the location of the loudspeakers SE
Audiotechnik engineers introduced “shared delay” concept which allows each channel to
have 3 different delay settings:
• Bypassed. No delay available for the channel
• Single. “Single Mode” delay with latency up to 700 samples (1 sample
minimum latency).
• Double. “Double Mode” delay configuration up to 1400 samples (2 samples
minimum latency). Only one channel can have this configuration. The other
one is bypassed.
Delay Settings menu allows to change delay settings for each channel. The delay
values are displayed in the Table 1. Please note that look-ahead function in the peak
limiter introduces preset dependent latency up to 48 samples. This is not included in
the table since it varies from preset to preset.
Figure 22. Delay Settings Menu.
Channel Status
Delay Range
Delay
Channel A
Channel B
Samples
Milliseconds
Meters
Built-In (ms)
Total (ms)
Bypassed
Bypassed
0
0
0
1.07
1.07
Single Delay
Bypassed
1-700
0.021 – 14.583
0.0072 – 5.002
1.07
1.091 – 15.653
Single Delay
Single Delay
Bypassed
Single Delay
Dual Delay
Bypassed
701-1400
14.604 – 29.167
5.009 – 10.004
1.07
15.674 – 30.237
Bypassed
Dual Delay
Table 1. Delay Settings Values.
DELAY SETTINGS
Back
CH A CH B
Double < Bypass