DALI AMP-2500 Powerful CI Amplifier Installation Guide

DALI AMP-2500 Powerful CI Amplifier

Technical and Safety Notices

Please read the following important technical, safety and environmental notices before installing and using your amplifier.

Technical Notices
All reasonable design and engineering steps have been taken to ensure that this amplifier always performs satisfactorily in its
intended application and environment and will provide appropriate levels of support to ensure that all reasonable customer needs and expectations are met. Such support however is contingent on the following provisions.
Specific warranty terms are the responsibility of the amplifier re-seller.

Safety and Environmental
Notices
Note: The intent of the lightning flash with arrowhead symbol in a triangle is to alert the user to the presence of uninsulated “dangerous” voltage within the product’s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to humans.
Note: The intent of the exclamation point within an equilateral triangle is to alert the user to the presence of important safety, and operating and maintenance instructions in this manual.
WARNING! TO PREVENT FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE.

• Ambient Temperature Note: If this equipment is operated in a confined or multiple rack installation, the internal ambient operating temperature may exceed the external ambient temperature. It is important to ensure in these circumstances that the published maximum operating temperature for the equipment is not exceeded.
• Reduced Air Flow: Ensure that rack or other closed installation does not restrict the cooling airflow required for safe and reliable operation of the equipment.
• Class 2 Wiring: Exposed high voltage on the speaker terminals. Touching the uninsulated terminals or wiring may result in an unpleasant sensation.

Important 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. Do not submerge the equipment in water or liquids.
7. Do not use any aerosol spray, cleaner, disinfectant or fumigant on, near or into the equipment.
8. Clean only with a dry cloth.
9. Do not block any ventilation opening. Install in accordance with the manufacturer’s instructions.
10. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.
11. To reduce the risk of electrical shock, the power cord shall be connected to a mains socket outlet with a protective earthing connection.
12. 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 are provided for your safety. If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet.
13. Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and the point where they exit from the apparatus.
14. Do not unplug the unit by pulling on the cord, use the plug.
15. Only use attachments/accessories specified by the manufacturer.
16. Unplug this apparatus during lightning storms or when unused for long periods of time.
17. 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.
18. The appliance coupler, or the AC Mains plug, is the AC mains disconnect device and shall remain readily accessible after installation.
19. Adhere to all applicable, local codes.
20. Consult a licensed, professional when any doubt or questions arise regarding a physical equipment installation.

Environmental Statement
This product complies with international directives, including but not limited to the Restriction of Hazardous Substances (RoHS) in electrical and electronic equipment, the Registration, Evaluation, Authorization and restriction of Chemicals (REACH) and the disposal of Waste Electrical and Electronic Equipment (WEEE). Consult your local waste disposal authority for guidance on how properly to recycle or dispose of this product.

Introduction

The DALI PHANTOM CI AMP-2500 DSP amplifier is designed to provide high performance and configurable audio power amplification for all DALI PHANTOM custom install speakers and subwoofers. It can however also be used to power conventional DALI passive hi-fi speakers.
This manual covers the features, installation and functions of the AMP-2500 DSP. Please read the manual fully before installing and using the amplifier. If you have any questions regarding amplifier configuration, installation or operation please contact your DALI retailer or installer, or DALI directly via the support pages at dali-speakers.com

Overview

The AMP-2500 DSP is a full rack width, 2U format two channel power amplifier rated at 500 Watts per channel. It is able to power up to four DALI CI SUB S-100 subwoofers simultaneously or one or two front or surround channel speakers. The AMP-2500 DSP provides four analogue inputs and one stereo S/PDIF digital input.

The AMP-2500 DSP is comprehensively equipped with DSP (digital signal processing) functions that enable it to be configured via the DALI PHANTOM CI AMP CONFIGURATOR with specific functional profiles designed for individual DALI speaker models.
The AMP-2500 DSP is by default set up with the DALI PHANTOM IW SUB S-100 functional profile installed. Installing profiles for alternative speakers is covered in Section 5 of this manual. DALI AMP-2500 DSP functional profiles for other speakers can be downloaded from: dali-speakers.com

DALI PHANTOM CI AMP CONFIGURATOR
The DALI PHANTOM CI AMP-2500 DSP provides comprehensive DSP based configuration menus accessible via the DALI PHANTOM CI AMP CONFIGURATOR web interface.
Access to the AMP CONFIGURATOR interface is made through wired (Ethernet) or wireless (WiFi) network connection to the AMP-2500 DSP either directly from a configuration device such as a smart phone or computer, or via a network router or switch.
The AMP CONFIGURATOR cover Speaker Profiles, Inputs, Outputs and General Settings and is described in Sections 5 and 8 of this manual. Connecting the AMP-2500 DSP to a wired or wireless configuration device or network is described in Section 5.2.

Amplifier Connections and Power Switching
AMP-2500 DSP signal input and output connections are accomplished via RCA Phono and Euroblock style connectors. A GPIO (General Purpose In/Out) Euroblock connector enables some amplifier functions to be controlled externally, and wireless or RJ45 socket Ethernet network connection options are also provided. Cable connectors and connections are described and illustrated in Section 6 of this manual. Connection and use of the GPIO socket is described in Section 5.5.

AMP-2500 DSP amplifier incorporates a front panel mounted power button. Press the button once to switch the amplifier on or off. Amplifier power management behaviour can be configured via the Control web interface [Settings] Menu described in Section 5 of this manual.

Firmware
This manual describes the features, functions and user interface of the AMP-2500 DSP amplifier running Firmware Version 1.3.3.
It is strongly recommended that the firmware version installed in the amplifier in use is checked initially, and regularly thereafter. If updated firmware is available, the amplifier should be updated as a priority.
The firmware installed in the amplifier can be identified and updated by selecting the [Device] option in the AMP CONFIGURATOR web interface [Settings] Menu. Firmware versions can be checked, and firmware downloaded, from the website: dali-speakers.com

Pack Contents

The AMP-2500 DSP amplifier is shipped in a cardboard carton containing the amplifier unit, accessories, a mains cable appropriate for the sales territory, and a document pack. The full contents is illustrated below.

Installation

Amplifier Location
The AMP-2500 DSP amplifier is shipped with rack “ears” attached and are primarily intended for standard (19 inch) equipment rack installation.
If not to be installed in an equipment rack, the AMP-2500 DSP amplifier can be placed free-standing on a flat surface. Adhesive rubber feet are supplied for this purpose. The rack ears can be removed if desired by unscrewing the six securing screws (three each side).

It is important that any installation provides space for airflow through the ventilation apertures at the front and rear of the amplifier. This is illustrated in Diagram 1A.

Diagram 1A
AMP-2500 DSP amplifier dimensions.

• Grey regions illustrate ventilation space requirements.
• For rack mount installation attach the amplifier to the rack uprights using standard rack-mount M6 bolts and nuts.
• For free-standing installation attach the supplied adhesive feet to the amplifier underside.
• Do not switch on the amplifier until all input and output connections have been made.

Initial Configuration

Before making input, output or GPIO connections to an AMP-2500 DSP amplifier it is important that it is configured appropriately, or has the appropriate functional profile installed, for the speakers that are to be used.
The AMP-2500 DSP is by default configured with a DALI PHANTOM IW SUB S-100 subwoofer functional profile installed. Deleting or modifying the IW SUB S-100 profile, or installing a profile for an alternative DALI speaker, requires that the AMP-2500 DSP amplifier is connected to mains power, switched on, and connected to either a TCP/IP network or directly to a configuration device for access to the DALI CI AMP CONFIGURATOR web interface.

NOTE If access to the AMP CONFIGURATOR is not required jump to Section 6 of this manual for guidance on audio signal and IW SUB S-100 subwoofer connections. Establishing network access to the AMP CONFIGURATOR is however recommended in all cases.

Mains Power Connection
The AMP-2500 DSP amplifier incorporates a power factor corrected universal power supply and can be used with mains input voltage from 100V AC to 240V AC, 50/60Hz. Use the mains cable supplied with the amplifier and connect it to a mains supply.
Press the front panel power button to switch on the amplifier. After a short delay the front panel Status indicator will illuminate green.

Amplifier Network Connection
The AMP-2500 DSP amplifier is configured via the DALI PHANTOM CI AMP CONFIGURATOR web interface. Before the configuration menus can be accessed, the AMP-2500 DSP amplifier must be either connected to the same network as the configuration device, or connected directly to a configuration device via either WiFi or Ethernet. The configuration device can be a smart phone, tablet or computer.

Wired (Ethernet) Connection
To connect an AMP-2500 DSP amplifier to a TCP/IP network or directly to a configuration device using a wired connection (Ethernet) follow the steps below.

1. Use an Ethernet cable to connect the AMP-2500 DSP amplifier rear panel [Network Control] socket to a free socket on a network router or switch, or directly to an Ethernet equipped laptop or desktop computer.
2. With the AMP-2500 DSP amplifier connected to mains power and switched on, the front panel [Network] indicator will illuminate green to indicate that the amplifier has network connectivity.
3. The AMP-2500 DSP amplifier default LAN IP address is 192.168.64.100. Configure the laptop or desktop computer for a fixed IP address in the same IP range; eg. 192.168.64.10, with Subnet mask of 255.255.255.0 (or prefix 24) and set the Gateway to 192.168.64.1.
4. Open a smart phone, tablet or computer web browser and enter the IP address: http://192.168.64.100. The DALI PHANTOM CI AMP CONFIGURATOR web interface will open to enable amplifier configuration as required.

NOTE: AMP-2500 DSP amplifiers can be configured to use DHCP for network connection if required. However, if a AMP-2500 DSP amplifier using DHCP is switched off and on, it is possible that the TCP/IP network router will assign it a different IP address, leaving its configuration page inaccessible via the previous IP address. If this occurs, a network scanning app can be used to identify the new IP address. DHCP and Fixed IP address option settings can be found in the AMP CONFIGURATOR
[Settings] menu described in Section 8 of this manual.

Wireless (WiFi) Connection
To connect an AMP-2500 DSP amplifier to a TCP/IP network or directly to a configuration device using a wireless connection (WiFi) follow the steps below.

1. With the AMP-2500 DSP amplifier connected to mains power and switched on, the front panel WiFi indicator will illuminate green to indicate the WiFi is available.
2. Use a mobile, laptop or desktop device to search for available WiFi networks. Connect to “[AMP-2500 DSP] (product serial number)” using the password “[password]”. The amplifier serial number can be found on its rear panel.
3. Open a smart phone, tablet or computer web browser and enter the IP address: 192.168.4.1. The DALI PHANTOM CI AMP CONFIGURATOR web interface will open to enable amplifier configuration as required.
4. If it is required to connect the amplifier to an alternative WiFi network, select the AMP CONFIGURATOR [Settings] Tab followed by [WiFi > WiFi Mode > Client] to configure the amplifier to connect to the required WiFi network. The WiFi network name and password will be required.

It is strongly recommended that the AMP-2500 DSP amplifier Access Point WiFi password is changed following initial wireless connection.

The DALI PHANTOM CI AMP CONFIGURATOR
Opening the IP address 192.168.64.10 in a web browser that is network- connected to an AMP-
2500 DSP amplifier displays the DALI PHANTOM CI AMP CONFIGURATOR web interface [Dashboard,] illustrated in Diagram 5A. The Dashboard is the AMP CONFIGURATOR “home” page from which all other configuration options can be accessed.
The [Dashboard] displays the amplifier status, output zones and the configuration menu tabs. It also enables access to the functions that enable DALI speaker or subwoofer profiles to be managed. This is described in the following paragraphs.

NOTE: Advanced amplifier configuration using the AMP CONFIGURATOR is described in Section 8 of this manual.

Standard functional profile, Backup and Restore
When an AMP-2500 DSP is used with DALI custom install in-wall speakers and subwoofers it is important that the correct functional profile is installed. Installing functional profiles is described in the following paragraphs.

1. Using a web browser app, open the DALI PHANTOM CI AMP CONFIGURATOR and select [Settings] from the [Dashboard] followed by the [Backup & Restore] option.

2. Selecting the [Backup & Restore] option will open the [Backup & Restore] menu and provide the option to restore the amplifier settings from a configuration file. This file will incorporate the appropriate functional profile data.
   NOTE: If the default profile IW SUB S-100 subwoofer is to be deleted, select the [RESET] option. This will return the amplifier to its baseline state with no functional profile installed.

3. Selecting [Restore Setup from file] will open a dialogue box that enables selection of a previously downloaded configuration file. Select [Select restore file], browse to the appropriate file and select the [Restore] option. The configuration file will be uploaded and automatically reset the amplifier to the correct configuration for the speakers or subwoofers to be used.

NOTE If the appropriate configuration file has not been downloaded it can be found at: dali-speakers.com

With the appropriate functional profile installed it is recommended that the amplifier is switched off while input, output and GPIO connections are made.

Connections

DALI PHANTOM CI AMP-2500 DSP amplifier rear panel connections are illustrated in Diagram 6A.

Mains Power Connection and On/Off Switch
The AMP-2500 DSP amplifier incorporates a power factor corrected universal power supply and can be used with mains input voltage from 100V AC to 240V AC, 50/60Hz. Use the mains cable supplied with the amplifier. Press the power button on the front panel once to switch the amplifier on or off.

Amplifier Input Connection
The AMP-2500 DSP amplifier provides four balanced or unbalanced analogue audio inputs and a stereo S/PDIF digital audio input. Any input channel can be routed to any output channel. Input routing options can be configured via the DALI PHANTOM CI AMP CONFIGURATOR web interface. See Section 8 of this manual.

Analogue Inputs
AMP-2500 DSP analogue inputs are of line level format with a default input sensitivity of +4dBu (full output voltage swing/sensitivity) in all output modes. Depending on the selected sensitivity, the inputs can handle up to +24dBu without clipping. Input sensitivity options can be set via the AMP CONFIGURATOR web interface [Input] Tab. See Section 8 of this manual.

Balanced input connections to the amplifier are made via male “Euro Block” connectors. Connecting cables to the supplied female input connectors is illustrated in Diagram 6D.
Unbalanced input connections to the amplifier are made via RCA phono sockets connected in parallel with the balanced inputs.

Digital Inputs
AMP-2500 DSP S/PDIF stereo digital audio input connections are made via the [DIGITAL IN] RCA Phono socket. The S/PDIF input is connected by default to amplifier installation Zones 1 (left) and 2 (right).

Digital Outputs
AMP-2500 DSP S/PDIF stereo digital audio output connections are made via the [DIGITAL OUT] RCA Phono socket. The S/PDIF output signal by default reflects
the input to amplifier installation Zones 1 and 2 and is intended to be used for daisy-chaining AMP-2500 DSP amplifiers.

NOTE: 75Ω RCA phono cables specifically intended for digital audio should always be used for S/PDIF connections. Standard Phono cables can be used but may not result in optimal performance.
NOTE: The S/PDIF output level is by default set at -10dB to reduce the possibility of downstream input clipping.

Diagram 6A
AMP-2500 DSP rear panel connections.

Speaker Connections
Speaker connections from the AMP-2500 DSP amplifier are made via male “Euro Block” connectors. Ensure that speaker connection polarity is correct throughout the installation:
In the case of conventional Lo-Z speaker connections, positive (+) amplifier terminals should always be connected to positive speaker terminals and negative (–) amplifier terminals always connected to negative speaker terminals.

In the case of Hi-Z or BTL speaker connections, the two speaker cable conductors should be connected between the positive (+) terminal of Output 1 and the negative terminal (-) of Output 2.

NOTE: Hi-Z and BTL speaker connection is not typically relevant to home audio systems and requires specialist knowledge. It should only be carried-out by appropriately qualified audio technicians.

Output mode options (Lo-Z or Hi-Z) can be configured via the AMP CONFIGURATOR [Output] Tab. See Section 8 of this manual.
Connecting cables to the supplied female output connector is illustrated in Diagram 6E.

Subwoofer Connection Options
The AMP-2500 DSP is able to power a variety of DALI PHANTOM custom install speakers, however it is by default setup with the DALI PHANTOM IW SUB S-100 subwoofer profile installed.
Up to four IW SUB S-100 subwoofers can be powered by one AMP-2500 DSP amplifier. The connection schemes recommended for systems comprising one, two and four subwoofers are illustrated in the Diagram 6B.

NOTE The default amplifier input and output routing is shown in Diagram 6B. Alternative input and output routing can be configured via the AMP CONFIGURATOR. See Section 8 of this manual for information on input and output routing.

Diagram 6B
AMP-2500 DSP and IW SUB S-100 connection schemes.

Speaker Cable Gauge
AMP-2500 DSP speaker connection cable gauge should be chosen appropriately to reflect the type of installation. The adjacent tables specify the appropriate cable gauge and maximum cable length for less than 0.5dB cable loss in Lo-Z mode and less than 1.0dB cable loss in Hi-Z mode.

GPIO Connections
If any AMP-2500 DSP GPIO functionality is required, cables will need to be connected to the supplied GPIO connector. Connecting cables to the GPIO connector is illustrated in Diagram 6F.

Network Connections
The AMP-2500 DSP amplifier is a TCP/IP network connected device that is configured via a web page based interface. Wired (Ethernet) and wireless (WiFi) connection options are available. Connecting the AMP-2500 DSP amplifier to a TCP/IP network is described in Section 5 of this manual.

NOTE The supplied “Euro Block” speaker connectors can accept up to 2.5 mm2 / 14 gauge speaker wire.

Cable Gauge Table
Lo-Z installations, 0.5dB attenuation. 2 Ω, 4 Ω & 8 Ω loads.

Cable Cross Section (mm2)| Cable Gauge (AWG)| Max Cable Length (Metres, 2 Ω load)| Max Cable Length (Metres, 4 Ω load)| Max Cable Length (Metres, 8 Ω load)
---|---|---|---|---
0.75| ≈18| N/A| 5| 10
1.5| ≈16| 5| 10| 20
2.5| ≈14| 8| 17| 35
4.0| ≈12| 14| 28| 55

Cable Gauge Table
70V Hi-Z installations, 1.0dB attenuation
20 speakers evenly distributed.

Cable Cross Section (mm2)| Cable Gauge (AWG)| Max Cable Length (Metres),

(1000 W/channel)

| Max Cable Length (Metres),

(1200 W/channel)

---|---|---|---
0.75| ≈18| 25| 20
1.5| ≈16| 50| 40
2.0| ≈14| 80| 60
3.5| ≈12| 125| 100

Cable Gauge Table
100V Hi-Z installations, 1.0dB attenuation
20 speakers evenly distributed.

Cable Cross Section (mm2)| Cable Gauge (AWG)| Max Cable Length (Metres),

(1000 W/channel)

| Max Cable Length (Metres),

(1500 W/channel)

---|---|---|---
0.75| ≈18| 50| 30
1.5| ≈16| 100| 60
2.0| ≈14| 160| 100
3.5| ≈12| 250| 160

The exclamation point printed next to the output terminals of the amplifier is, in addition to the “CLASS 2 WIRING” text, intended to alert users to the risk of hazardous voltages. Output connectors that could pose a risk are marked with the exclamation point. Do not touch the output terminals while the amplifier is switched on. Make all connections with the amplifier switched off.

Diagram 6C
Unbalanced analogue input cable connections.

Diagram 6D
Balanced analogue input cable connections.

Diagram 6E
Speaker cable connections.

Diagram 6F
GPIO cable connections.

Operation

Once all connections have been made and configuration options selected, the AMP-2500 DSP amplifier is ready for use. If an input signal above -60dB is present on any input, the front panel [Input] and [Standby] indicators will illuminate green to indicate normal amplifier operation. Audio will be heard from any connected speakers.

NOTE The AMP-2500 DSP amplifier will by default not wake from Standby Mode unless an input signal is present, a network “ON” command is received, or an external standby switch (or 12V trigger) is operated. Standby behaviour can be configured via the [Power Management] menu of the AMP CONFIGURATOR [Settings] Tab.

Amplifier outputs will mute if no input signal is present for 5 minutes, and the amplifier will switch automatically to Standby Mode if no signal is present on any input for more than 15 minutes. Alternative standby and mute delay times can selected via the AMP CONFIGURATOR [Settings] Tab. Amplifier cooling fan speed is temperature controlled. The fan will switch off when the amplifier enters standby mode.

Front Panel Indicators
AMP-2500 DSP amplifier front panel indicators illuminate to indicate the following operational states:

Default Reset
The AMP-2500 DSP amplifier can be returned to its default settings via either the AMP CONFIGURATOR [Settings] Tab or through the front panel power button.
To reset the amplifier using the front panel power button, follow the steps below:

• Disconnect the amplifier from mains power.
• Press and hold the front panel power button while simultaneously reconnecting mains power.
• Continue to hold the front panel power button for 3 to 5 seconds as the amplifier restarts.

The amplifier will restart with all settings at their baseline state. Any previously configured settings or functional profile data will be deleted.

Advanced Configuration

In addition to the installation of DALI functional profiles described in Section 5.3 of this manual, the DALI PHANTOM CI AMP-2500 DSP can be further configured to meet a variety of more advanced installation requirements. The advanced configuration options are described in the following paragraphs.

Adjustment of AMP-2500 DSP advanced configuration parameters demands specialist knowledge and should only be carried-out by appropriately qualified audio technicians.
Begin by connecting the AMP-2500 DSP to a network enabled device such as a smart phone, tablet or computer. Open a web browser on the connected device and browse to the DALI PHANTOM CI
AMP CONFIGURATOR web interface. The AMP CONFIGURATOR Dashboard, illustrated in Diagram 8A, will be displayed.

NOTE AMP-2500 DSP network connection is described in Section 5.2 of this manual.

The [Dashboard] displays the amplifier status, output zones and the configuration menu tabs. It also enables immediate access to volume control. The advanced functions available under each configuration menu tab are described in the following paragraphs.

AMP CONFIGURATOR [Input] Tab
The [Input] Tab provides naming, mono/stereo selection, sensitivity, and gain trim for each amplifier input channel. An internal pink noise source, provided for system testing and set up, can also enabled or disabled, and adjusted for gain via the [Input] Tab. Diagram 8B illustrates the [Input] Tab.

NOTE When adjusting input gain, the input level display should remain green. If it displays red, the input gain should be reduced.

[Zone] Tab
The [Zone] Tab enables installation zones to be defined and named, and provides access to further sub-menus. Zones might be lounge or dining areas for example, or different rooms in the home. For all [Zone] Tab menus, the installation zone under configuration is selected by highlighting one of the zone identifiers (A, or B) at the top of the page. Diagram 8C illustrates the [Zone] Tab.

• The [Source] menu option enables inputs to be assigned to zones.
• The [GPIO Volume Control] option enables external volume control to be applied to individual zones. The GPIO configuration menu can be found under the [Settings] Tab.
• The [Compressor] option enables default or custom signal compression to be applied to individual installation zones.

NOTE Compression can be useful to reduce the volume difference between loud and quiet audio material. The lower the compression threshold is set, the more the difference between loud and soft will be reduced. The overall zone volume may need to be increased when compression is used. The default compression parameters are appropriate for most installations.

Diagram 8C
AMP CONFIGURATOR [Zone] Tab display.

[Output] Tab
The [Output] Tab enables speaker outputs to be named and provides access to further sub-menus.
For all [Output] Tab menus, the amplifier output under configuration is selected by highlighting one of the output identifiers (1 or 2) at the top of the display. The [Output] Tab also enables Speaker Preset configurations to be created, exported, imported or cleared. Diagram 8D illustrates the [Output] Tab.

• The [Routing] menu enables zones to be assigned to amplifier outputs.
• The [Delay] menu enables delay to be applied to individual amplifier outputs.
• The [Speaker EQ] menu enables parametric equalization to be applied to individual amplifier outputs. Equalizer settings configured for one amplifier output can be copied and applied to other outputs.
• The [Speaker Preset] menu enables a set of speaker parameters to be adjusted, and speaker preset configurations to be created.
• Speaker Presets can be simply applied to the selected amplifier output or imported, chosen from a library, exported or cleared. The preset configurations can include any or all of the parameters described in Section 7.3.4 and can be locked to prevent inadvertent modification. Diagrams 8E to 8H illustrate the application of speaker presets.
• Speaker Preset data provided by third parties for use with specific speakers can be imported and applied to amplifier outputs. To import speaker preset parameters follow the steps described below and illustrated in the diagrams.

1. Select either the [IMPORT PRESET FROM FILE] or [SELECT PRESET FROM LIBRARY] option from the [Speaker Preset] menu. If no import option is visible, select [CLEAR] to delete any existing speaker preset data.
2. Select the appropriate “.zcp” format speaker preset data file to import from either a Library or a computer folder. The preset data will be applied to the selected amplifier output as soon as the file import is complete.
3. If the Speaker Preset data requires modification it can be customized by selecting the [CUSTOMIZE PRESET] option.

NOTES

• The number of individual outputs available for configuration will depend on the AMP-2500 DSP input, zone and output mode configuration.
• Routing for zones specified as stereo will automatically offer three output options: [Left], [Right] or [Sum] (summed mono). The summed mono signal can potentially be used to power a mono subwoofer from a stereo source.
• AMP-2500 DSP Speaker Presets are distinct from Functional Profiles in that they don’t include amplifier input, zone or signal routing parameters.
• The [SELECT PRESET FROM LIBRARY] option will be unavailable if no speaker preset libraries have been created. Speaker preset library creation and management is described in Section 7.5.
• If an imported Speaker Preset data file includes locked parameters, they will be unavailable for modification.
• The AMP-2500 DSP is by default installed with the correct preset for the SUB S-100 subwoofer. If another preset or a custom preset is desired, clear the current preset and import or create your own.

Speaker Preset Menu Parameters

• The [Crossover & Gain] preset menu enables high or low-pass crossover filters and gain adjustment to be applied to individual amplifier outputs.
• The [Speaker EQ] preset menu enables parametric equalization to be applied to individual amplifier outputs.
• The [FIR] preset menu enables FIR (Finite Impulse Response) based equalization filter coefficients generated by external speaker measurement software to be imported and applied to individual amplifier outputs.
• The [Driver Alignment] preset menu enables delay to be applied to individual amplifier outputs.
• The [Polarity] preset menu enables the polarity of individual amplifier outputs to be reversed.
• The [Limiter] preset menu enables signal limiting to be applied to individual amplifier outputs. Clip limiting, peak limiting and RMS limiting can be individually or collectively engaged. The Peak limiter can be set to either automatic or custom parameter values. The RMS limiter has default parameter values that can be adjusted but has no automatic option.
• The [Output Mode] preset menu enables individual amplifier outputs to be switched off or configured for Lo-Z, Hi-Z or Lo-Z BTL modes. In Hi-Z modes, a high-pass filter can also be configured and applied to the output. The number of outputs available will depend on the input setup and zone setup. For example, a two output amplifier will have two outputs available if Lo-Z mode is selected but only one output available if Hi-Z mode is selected.

NOTES

• FIR coefficient files in either .csv or .txt format can be imported.
• In automatic mode, the peak limiter parameters adjust automatically in response to Crossover & Gain high-pass filter settings.
• In Lo-Z BTL (bridge-tied load) mode, two amplifier output channels are combined to create a single, double power output channel.
• Use of a high-pass filter with Hi-Z mode loudspeakers is useful to avoid the possibility of distortion caused by low frequency line transformer saturation. Begin with the default filter setting of 70Hz. If low frequency distortion is still audible, increase the frequency setting one step at a time until the distortion is no longer audible.

[Settings] Tab
The [Settings] Tab enables miscellaneous amplifier settings to be configured and installation data to be recorded. The [Settings] Tab provides access to further sub-menus. Diagram 8I illustrates the [Settings] Tab.

• The [System Information] menu provides text fields for the recording of installation data.
• The [Device] menu records amplifier specific information such as the model number and firmware version. A firmware update routine and identifier button can also be found under the [Device] menu.
• The [Backup & Restore] menu enables amplifier functional profiles to be downloaded to an external archive, and enables previously saved configuration files to be uploaded and adopted by the currently connected amplifier. Explained in Section 5.3.1.
• The [Speaker Library] menu enables management of speaker preset libraries. Libraries of speaker preset files (.zcl) can be created, and existing libraries can be imported, edited or fully deleted. Diagram 8J illustrates the creation and management of speaker preset libraries.
• The [Power Management] menu enables various automatic switch-on and standby options to be engaged. The Power Management menu also offers a timed Mute function.
• The [GPIO] menu enables configuration of the multi-purpose GPIO interface pins.
• The [LAN] menu enables configuration and reset of the wired network options and parameters.
• The [WiFi] menu enables configuration and reset of the wireless network options and parameters.

Setup and Signal Routing
Thanks to the DALI PHANTOM CI AMP CONFIGURATOR the AMP-2500 DSP amplifier offers considerable versatility in terms of sources, signal routing, installation zones and output modes. Inputs can be freely assigned to installation zones, and those zones assigned freely to the available amplifier outputs in either Lo-Z or Hi-Z modes.

This versatility enables, for example, different inputs to be routed to different output zones.
The following paragraphs describe and illustrate the recommended procedure for configuring input, zone and output routing. A general signal flow schematic is also illustrated in Diagram 8K.

Input Setup
Open the configuration Dashboard and select the [Input] Tab. The [Input] Tab is shown in Diagram 8B.

• To edit default input names simply select and type in the Input Name field.
• Define a mono or stereo input by selecting the appropriate option. Defining a stereo input will reduce the total number of discrete inputs available.
• Select an input sensitivity option from the [Sensitivity] drop-down menu: +14dB, +4dB, -10dB and “[Microphone]” options are available. Generally, the +14dB or +4dB options are appropriate for “professional audio” source hardware with balanced outputs, while the -10dB option is more appropriate for “consumer audio” source hardware with unbalanced outputs. The [Microphone] option provides the significantly greater sensitivity required for microphones.
• If necessary, adjust the input gain using the slider or up/down icons. Gain adjustment is intended to be used for fine output level adjustment following initial use.

Zone Setup & Routing
Open the configuration Dashboard and select the [Zone] Tab. The [Zone] Tab is shown in Diagram 8C.

• Select the zone to be configured. The number of zones available and their channel format (stereo or mono) will depend on the amplifier input setup and output mode (Lo-Z or Hi-Z). For example, a two output amplifier can have the following zone configurations:
  • 1 x stereo Lo-Z zone
  • 2 x mono Lo-Z zones
  • 1 x mono Hi-Z zone
  • 1 x mono Lo-Z BTL zone
• Name zones by typing in the Zone Name field.
• Adjust the zone volume if required by using the slider.
• Define a mono or stereo zone by selecting the appropriate option. Defining a stereo zone will reduce the total number of further zones available.
• Specify an input for the zone by selecting from the drop-down menu. Selecting a stereo input for a mono zone will automatically sum the stereo channels to mono.

NOTES

• When configured in Lo-Z BTL mode or Hi-Z mode, the AMP-2500 DSP amplifier operates in “bridged” mode where the output of two channels is combined. This means that the number of output channels available in these modes is half that available in Lo-Z mode.
• Mono signals might be mono at source, created though combining the left and right channels of a stereo signal (summed mono) or treating the left and right channels of a stereo signal independently (split mono).

GPIO Setup and Connection
The AMP-2500 DSP amplifier provides a GPIO socket that enables remote control of volume, standby, mute and trigger functions. The GPIO connector pin functions are described in the [GPIO] Settings menu illustrated in Diagram 8L. The connection of GPIO based remote volume control and standby/mute are illustrated in Diagram 8M and Diagram 8N respectively.

NOTES

• The GPIO connector must not be used for any unintended purpose. Amplifier damage may result from incorrect use of GPIO.
• Shielded cable must be used when connecting standby switches and potentiometers via GPIO.’
• GPIO Pin 8 has a low output impedance and is able to supply a maximum current of 10mA.
• GPIO Pin 1 and Pin 3 both offer ground connections: Pin 1 is connected directly to the amplifier chassis. Pin 3 is connected to the chassis via a 220 Ohm resistor. The “soft ground” connection of Pin 3 is potentially useful for managing ground loops that may cause audible hum.

Specifications

*SE – conventional, single ended output mode
**BTL – bridge-tied load output mode

References

• State-of-the-art loudspeakers | DALI Speakers

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