LD systems LD IMA 30 Mixing Amplifier User Manual

User Manual

LD IMA 30 Mixing Amplifier

YOU‘VE MADE THE RIGHT CHOICE!
We have designed this product to operate reliably over many years. LD Systems stands for this with its name and many years of experience as a manufacturer of high-quality  audio products. Please read this User‘s Manual carefully, so that you can begin making optimum use of your LD Systems product quickly.
You can find more information about LD-SYSTEMS at our Internet site WWW.LD- SYSTEMS.COM

SAFETY INFORMATION

1. Please read these instructions carefully.

2. Keep all information and instructions in a safe place.

3. Follow the instructions.

4. Observe all safety warnings. Never remove safety warnings or other information from the equipment.

5. Use the equipment only in the intended manner and for the intended purpose.

6. Use only sufficiently stable and compatible stands and/or mounts (for fixed installations). Make certain that wall mounts are properly installed and secured. Make certain  that the equipment is installed securely and cannot fall down.

7. During installation, observ e the applicable safety regulations for your country.

8. Never install and operate the equipment near radiators, heat registers, ovens or other sources of heat. Make certain that the equipment is always installed so that is cooled sufficiently and cannot overheat.

9. Never place sources of ignition, e.g., burning candles, on the equipment.

10. Ventilation slits must not be blocked.

11. Keep a minimum distance of 20 cm around and above the device.

12. Do not use this equipment in the immediate vicinity of water (does not apply to special outdoor equipment – in this case, observe the special instructions noted below.  Do not expose this equipment to flammable materials, fluids or gases. Avoid direct sunlight!

13. Make certain that dripping or splashed water cannot enter the equipment. Do not place containers filled with liquids, such as vases or drinking vessels, on the equipment.

14. Make certain that objects cannot fall into the device.

15. Use this equipment only with the accessories recommended and intended by the manufacturer.

16. Do not open or modify this equipment.

17. After connecting the equipment, check all cables in order to prevent damage or accidents, e.g., due to tripping hazards.

18. During transport, make certain that the equipment cannot fall down and possibly cause property damage and personal injuries.

19. If your equipment is no longer functioning properly, if fluids or objects have gotten inside the equipment or if it has been damaged in anon her way, switch it off  immediately and unplug it from the mains outlet (if it is a powered device). This equipment may only be repaired by authorized, qualified personnel.

20. Clean the equipment using a dry cloth.

21. Comply with all applicable disposal laws in your country. During disposal of packaging, please separate plastic and paper/cardboard.

22. Plastic bags must be kept out of reach of children.

23. Please note that changes or modifications not expressly approved by the party responsible for compliance could void the user´s authority to operate the equipment.
    FOR EQUIPMENT THAT CONNECTS TO THE POWER MAINS

24. CAUTION: If the power cord of the device is equipped with an earthing contact, then it must be connected to an outlet with a protective ground.
    Never deactivate the protective ground of a power cord.

25. If the equipment has been exposed to strong fluctuations in temperature (for example, after transport), do not switch it on immediately.
    Moisture and condensation could damage the equipment. Do not switch on the equipment until it has reached room temperature.

26. Before connecting the equipment to the power outlet, first verify that the mains voltage and frequency match the values specified on the equipment. If the equipment has a voltage selection switch, connect the equipment to the power outlet only if the equipment values and the mains power values match. If the included power cord or  power adapter does not fit in your wall outlet, contact your electrician.

27. Do not step on the power cord. Make certain that the power cable does not become kinked, especially at the mains outlet and/or power adapter and the equipment  connector.

28. When connecting the equipment, make certain that the power cord or power adapter is always freely accessible. Always disconnect the equipment from the power supply  if the equipment is not in use or if you want to clean the equipment. Always unplug the power cord and power adapter from the power outlet at the plug or adapter and  not by pulling on the cord. Never touch the power cord and power adapter with wet hands.

29. Whenever possible, avoid switching the equipment on and off in quick succession because otherwise this can shorten the useful life of the equipment.

30. IMPORTANT INFORMATION: Replace fuses only with fuses of the same type and rating. If a fuse blows repeatedly, please contact an authorised service centre.

31. To disconnect the equipment from the power mains completely, unplug the power cord or power adapter from the power outlet.

32. If your device is equipped with a Volex power connector, the mating Volex equipment connector must be unlocked before it can be removed.
    However, this also means that the equipment can slide and fall down if the power cable is pulled, which can lead to personal injuries and/or other damage. For this  reason, always be careful when laying cables.

33. Unplug the power cord and power adapter from the power outlet if there is a risk of a lightning strike or before extended periods of disuse.

34. The appliance is not to be used by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge.

35. Children must be instructed not to play with the device.

36. If the power cord of the device is damaged, do not use the device. The power cord must be replaced by an adequate cable or assembly from an authorized service center.

CAUTION:
To reduce the risk of electric shock, do not remove cover (or back). There are no user serviceable parts inside. Maintenance and repairs should be exclusively carried out by qualified service personnel.
The warning triangle with lightning symbol indicates dangerous uninsulated voltage inside the unit, which may cause an electrical shock.
The warning triangle with exclamation mark indicates important operating and maintenance instructions.
Warning! This symbol indicates a hot surface. Certain parts of the housing can become hot during operation. After use, wait for a cool-down period of at least 10 minutes before handling or transporting the device.
Warning! This device is designed for use below 2000 meters in altitude.
Warning! This product is not intended for use in tropical climates.

CAUTION! HIGH VOLUMES IN AUDIO PRODUCTS!
This device is meant for professional use. Therefore, commercial use of this equipment is subject to the respectively applicable national accident prevention rules and  regulations. As a manufacturer, Adam Hall is obligated to notify you formally about the existence of potential health risks.
Hearing damage due to high volume and prolonged exposure: When in use, this product is capable of producing high sound-pressure levels (SPL) that can lead to irreversible  hearing damage in performers, employees, and audience members. For this reason, avoid prolonged exposure to volumes in excess of 90 dB.

NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to  provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not  installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off  and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving 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.
• Consult the dealer or an experienced radio/TV technician for help.

INTRODUCTION

Permanent installations require solutions which offer a visually discrete design that blends into the background while still being flexible and versatile in their functions. You  need to be able to connect different audio sources and manage them, to mute non-priority signals during announcements or emergency calls. With IMA® 30, LD Systems  presents the first model of the new IMA® mixing amplifier-series, which leaves nothing to be desired in terms of design and flexibility.
Seamless integration with IMA® 30 is a sure thing in both industrial and commercial applications thanks to the compact 9.5-inch housing design, an array of connection  possibilities, including Bluetooth for wireless connection of Audio and a multistage priority circuit. IMA® 30 is equipped with four priority levels to manage all connected  audio signals during emergency or priority announcements. An automatic standby mode can also be activated to reduce power consumption during absence of audio signal.
The mixing amplifier features two priority contact closures: one for emergency input to mute both Mic/Line and music sources, and one for Mic/ Line Channels to mute  music sources only. The outputs provide 30 W of power at 4 Ohm, a two-band equalizer for bass and trebles as well as 70 V/100 V tap settings. The Hi-Z and Lo-Z selector  switch lets you separate the output signal completely from the output transformer to ensure an optimal frequency response for low impedance applications. The built-in aux output can be used to add external power amplifiers, active subwoofers or on-hold music systems to the IMA® 30. You can also choose to send the entire mix or only the  selected music signal source to the aux output using the music-mix selector switch.

FEATURES

• Line input for emergency signal with contact closure
• 2 microphone/line input sockets with microphone/line switch and switchable 24 V phantom power
• Switchable chime feature in Mic/Line 1 channel
• 2 line inputs with RCA (cinch) sockets and Bluetooth 4.0 interface (mono summed)
• Class-D amplifier with 30 W performance
• Output for low impedance speakers and 70 V/100 V outputs with LO-Z/HI-Z switch. The audio signal is completely separated from the transformers for optimal  frequency response during low impedance use.
• Balanced AUX line output for controlling external amplifiers, active subwoofers or music-on-hold systems
• Music mix switch on AUX out for setting whether AUX out plays the overall mix or only the selected music source.
• Separate tone control for treble and bass on the back of the device
• 4 priority settings for comprehensive integration options
• Switchable auto standby mode for reduction of energy consumption
• User-friendly control panel design for intuitive operation with capacitive control panels for selecting music source and for Bluetooth pairing
• Clearly arranged and labelled sockets and operating elements on the back for easy installation
• Universal wide-range switching power supply
• Half-rack format with 2 height units
• Rack mounting kit optionally available (IMA RK) for mounting one or two IMA 30/60 together in a single 19“ rack.

CONNECTIONS, OPERATING AND DISPLAY ELEMENTS

1. POWER SOCKET
   IEC power socket for supplying power to the device. A suitable power cable is included.

2. FUSE
   Fuse holder for 250 V micro fuses (5 x 20 mm). IMPORTANT: Replace the fuse only with a fuse of the same type. Follow the instructions printed on the housing. In the event of repeated fuse failure, please contact an authorised service centre.

3. ON/OFF
   Rocker switch for switching the device on and off.

4. EMERGENCY
   Five-pin terminal block connection for installing an acoustic emergency system. The pins +, – and G form the balanced line in. Pins C and + the connection are for a separate mute switch (terminal block included). The VOX (Voice Operated Exchange) control allows users to set an audio threshold for the emergency input to trigger  an automatic mute circuit. When the emergency input level reaches that threshold, all other microphones and line channels are muted to ensure that the emergency signal can be clearly and distinctly heard The EMERG display field on the front of the device is also lit. As soon as the emergency signal level drops below the defined  threshold, the other channels are unmuted and the EMERG display field turns OFF. When set accordingly, the EMERGENCY channel has the highest priority among  all channels. The emergency signal is sent directly to the internal amplifier and to the loudspeaker output. The master volume control has no influence over the emergency signal. The emergency signal volume is set using the GAIN control. The Emergency contact closure (pins C and +) allows muting of all other input channels,  independently from the VOX setup. If the VOX control is set to minimum (all the way left), the muting feature via the VOX circuit is deactivated and the  EMERGENCY channel can be used as a extra line channel.

5. MIC/LINE 1
   Microphone/line channel with switchable chime feature. Both the combined XLR/jack combo socket or the terminal block connection can be used as signal input. The pins +, – and G of the terminal block connection form the balanced input. Pins C and + the connection are for an external mute button or switch (terminal block included). If a line signal is present at the combined XLR/jack combo socket or at the terminal block connector, switch the MIC/LINE 1 channel to line sensitivity by depressing the corresponding MIC/LINE switch into the LINE position. If a microphone is attached, set it in the non- depressed MIC position. When using a condenser microphone, also switch the 24 V phantom power on (switch PHANTOM ON/ OFF to the depressed ON position). Ensure that the microphone is already connected and that the channel’s volume is set to minimum before switching the phantom power on. Before disconnecting the microphone, ensure that the phantom power is already switched off and that the channel’s volume is set to minimum. The chime signal’s volume is set using the CHIME control. If the internal chime is triggered, channels MIC/LINE 1, MIC/LINE 2, and MUSIC are muted during the duration of the chime signal. The VOX control allows to set an audio threshold for MIC/LINE 1 input, to trigger an automatic mute circuit that mutes MIC/LINE 2 and MUSIC channels as soon as the input level reaches the defined threshold. The VOX control allows to set an audio threshold for MIC/LINE 1 input, to trigger an automatic mute circuit that mutes MIC/LINE 2 and MUSIC channels as soon as the input level reaches the defined threshold. The PRIO LED in the front panel is turned ON when both the contact closure or the VOX circuit are triggered. When the input signal level drops below the defined threshold, the channels are unmuted, and PRIO LED is turned OFF. When set accordingly, the MIC/LINE 1 has priority over MIC/LINE 2 and MUSIC. Set the channel’s volume using control 1 on the front of the device.

6. MIC/LINE 2
   Microphone/line channel. Either the RCA (cinch) sockets or the terminal block connection can be used as signal input. The pins +, – and G of the terminal block connection form the balanced input (terminal block included). If a line level signal is present at the terminal block connection, switch the MIC/LINE 2 channel to line sensitivity by depressing the corresponding MIC/LINE switch into the LINE position. If a microphone is attached to the terminal block connection, set it to the non-depressed MIC position. When using a condenser microphone, also switch the 24 V phantom power on (switch PHANTOM ON/OFF in the depressed ON position). Ensure that the microphone is already connected and that the channel’s volume is set to minimum before switching the phantom power on. Before disconnecting the microphone, ensure that the phantom power is already switched off and that the channel’s volume is set to minimum. Tip: Use the contact closure (pins C and +) on MIC/LINE 1 channel to also give MIC/LINE 2 channel priority over MUSIC. External switches for both MIC/ LINE 1 and MIC/LINE 2 can be connected in parallel to the contact closure input.

7. MUSIC
   Line channel for connecting additional playback devices such as a CD or MP3 player. A Bluetooth module is also built into the MUSIC channel. Two stereo line input  signals can be connected to the RCA (cinch) sockets available in the rear panel. One with a CD icon, and other with a cable icon. Use the touch-sensitive control on the front panel to select the desired signal source. Any stereo signals that are present are internally summed to mono.

8. AUX OUT
   The AUX OUT line output with terminal block connection can be used, for example, to send a signal to an external amplifier, an active subwoofer or a MOH (Music On Hold) telephone system (terminal block included). The MUSIC-MIX switch allows sending of only the selected signal source from the music channel (MUSIC position), or the full mix of all channels (MIX position).
   Please note: The factory setting is that the EMERGENCY channel signal is routed to the AUX OUT line output with an internal jumper. To modify this setting, the  device must be opened and the corresponding jumper removed. To do so, please read the information found under “JUMPER FOR EMERGENCY SIGNAL ON AUX OUT” in these instructions.

9. SPEAKER OUTPUT
   The loudspeaker output with terminal block connection (terminal block included) offers the option to connect either a low impedance loudspeaker with a total  impedance of at least 4 ohm (switch LO-Z HI-Z to position LO-Z) or a 70 V/100 V loudspeaker (switch LO-Z HI-Z to position HI-Z). Please use the corresponding  pin assignment illustrated below the terminal block connection. Adjust the sound of the loudspeaker’s signal to your needs by using the tone controls BASS and  TREBLE. Please ensure that the total output of the connected loudspeaker roughly corresponds to the amplifier performance.

10. STANDBY ON/OFF
    When the standby switch is activated (STANDBY in position ON), the amplifier automatically goes into standby mode after 20 minutes of no audio signal, thereby  reducing power consumption. When an audio signal becomes present, standby mode is automatically ended and the amplifier is once again operational after around 3  seconds (the standby LED blinks white during this startup time). The STANDBY LED on the front of the device is continuously white when in normal operation. It is  red when in standby mode. IMA30 can be manually set into standby mode by pressing the standby button on its front panel. In that case, the auto-standby mode is disabled, and the unit won’t wake up automatically.
    Please note: The auto-standby mode switch analyses the connection status of the Bluetooth unit. If it identifies a Bluetooth connection to a playback device (e.g. smartphone or tablet), and Bluetooth is selected as a signal source, the device will not automatically go into standby mode.

11. CHANNEL 1
    Volume control for channel 1 with white SIG (signal) LED and red CLIP LED. If an audio signal is present on channel 1 and the volume is accordingly increased using  volume control 1, the white Signal LED lights up. If the red CLIP LED lights up, signal distortion may result. Reduce the output level of the playback device or the  volume using volume control 1.

12. CHANNEL 2
    Volume control for channel 2 with white SIG (signal) LED and red CLIP LED. If an audio signal is present on channel 2 and the volume is accordingly increased using  volume control 2, the white Signal LED lights up. If the red CLIP LED lights up, signal distortion may result. Reduce the output level of the playback device or the volume using volume control 2.

13. Touch-sensitive control button for selecting the MUSIC channel signal source (Bluetooth module, input with CD icon, input with cable icon). Switch the signal source by touching the control panel for at least half a second. Activating the respective signal source occurs in a clockwise fashion.

14. Touch-sensitive control button for activating the Bluetooth pairing mode. Pair a Bluetooth playback device (e.g. smartphone, tablet etc.) with the Bluetooth module by  selecting Bluetooth as the signal source (see Item 13). If no playback device is paired or connected to the Bluetooth module, the Bluetooth icon flashes slowly. Pair a  device by pressing the Bluetooth control panel for around 2 seconds, until the Bluetooth icon flashes faster. The Bluetooth ID is now visible to other Bluetooth devices.  Activate Bluetooth on your playback device and search for nearby Bluetooth devices from its Bluetooth menu. When LD IMA 30 appears under “available devices”,  select it to automatically pair. When pairing is complete, the Bluetooth icon on the front of the devices will light up and remain on. The Bluetooth ID is no longer visible  to other devices to prevent unauthorised pairing with the Bluetooth module. Playback on the device can now be started. To disconnect a currently paired Bluetooth  device and to set the Bluetooth module ready to pair again, press the Bluetooth icon for around 2 seconds. Pair the playback device and connect it again by selecting LD  IMA 30 from “paired devices” in the Bluetooth menu of the playback device.

15. MUSIC
    Volume control for the MUSIC channel with white SIG (signal) LED and red CLIP LED. If an audio signal is present on channel MUSIC and the volume is accordingly  increased using volume control MUSIC, the white Signal LED lights up. If the red CLIP LED lights up, signal distortion may result. Reduce the output level of the playback device or the volume using MUSIC volume control.

16. MASTER VOLUME CONTROL
    The master volume control is used for adjusting the volume of the summed signal of all channels, excluding the EMERGENCY channel. The EMERGENCY channel bypasses the master volume control and its signal is sent directly to the internal amplifier and loudspeaker output. The master volume control features a display ring with  tricolor LEDs. The LED ring is dark when no signal or when only a very weak signal is present at the output. It lights up white when a signal with a sufficient level is  present. When the internal limiter acts, the ring becomes yellow. When the ring becomes red, protection mode is activated due to a technical problem (e.g. short circuit in speaker cable). The output is muted in protection mode. Switch the device off. If the technical problem cannot be rectified, please contact an authorised service centre.

17. PRIO
    Display field for the indication of an active priority mode related to MIC/LINE channels (levels 2, 3 and 4). Three situations cause the priority feature of the MIC/LINE channels to engage, thereby causing the PRIO display field on the front of the device to light up yellow:
    1. The VOX switching circuit is active (input signal level from channel MIC/LINE 1 exceeds the VOX threshold).
    2. Contact between C and + in the terminal block connection of channel MIC/LINE1 is closed using a mute button or switch.
    3. Chime tone is being played.
    Further information about channel priorities and the display fields EMERG and PRIO, on the front of the device, can be found in the table PRIORITY LEVELS in these instructions.

18. EMERG
    Display field for the priority feature of the Emergency channel. The display field EMERG will light up yellow when priority level 1 is activated by an emergency VOX  circuit or by using an attached mute switch (contact closure). In that moment, all other input channels will be muted. As soon as the contact closure is  opened/disconnected, and when the emergency signal level falls below the set VOX threshold, all channels will be unmuted, and the EMERG display will be turned off.

19. STANDBY BUTTON
    The amplifier can be set to standby mode with a short push of the standby button. This also mutes the loudspeaker outputs. Bring the device out of standby and back  into normal operation by briefly pressing the button again. When standby mode is activated by pressing the standby button, the amplifier’s standby mode cannot be  ended by the automatic standby feature, even when an audio signal is present.

20. STANDBY LED
    Bicolor LED for displaying operational status. The standby LED lights up white when the device is operational. In standby mode it lights up red.

PRIORITY LEVELS

Priority Level| Trigger Source| Muted Signal Sources| Active Signal
Sources| Indication in the
Front Panel
---|---|---|---|---
1| Emergency VOX a contact closure| MIC/LINE 1| EMERGENCY| EMERG
MIC/LINE 2
MUSIC
2| fur/LINE-I VOX| MIC/LINE 2| EMERGENCY| PRIO
MUSIC| MIC/LINE 1
3| mic/LINE1 contact closure during chime playout| MIC/LINE1| EMERGENCY| PRIO
MIC/LINE 2
MUSIC
4| mic/LINE1 contact closure after chime playouts| MUSIC| EMERGENCY| PRIO
MIC/LINE 1
MIC/LINE 2
5| | | EMERGENCY|
MIC/LINE 1
MIC/LINE 2
MUSIC

WIRING EXAMPLES

The connection for a mute button or switch in the MIC/LINE 1 channel can be used by two devices at the same time for muting a music signal or initiating the chime signal.  To do so, the corresponding mute contacts of both devices must be connected to the contacts C and + of the terminal block connection of the MIC/LINE 1 channel.

When wiring the terminal block, please ensure that the correct pin assignment is observed (see illustration below the terminal block connections). The manufacturer assumes  no liability for damage of any kind resulting from incorrect wiring! Further information on the correct wiring of terminal blocks can be found under the item TERMINAL BLOCK CONNECTIONS in these instructions.

TERMINAL BLOCK CONNECTIONS

LINE OUTPUT AUX OUT

SPEAKER CONNECTIONS (low impedance, 100 V and 70 V loudspeakers)

INPUTS CHANNELS 1 AND 2

INPUTS EMERGENCY CHANNEL

JUMPER FOR EMERGENCY SIGNAL ON AUX OUT

The factory setting is that the EMERGENCY channel signal is routed to the AUX OUT line output with an internal jumper.
To modify this setting, the device must be opened and the corresponding jumper removed.

Important!
Warning: Risk of electric shock! Dangerous voltages present inside device!
Opening the device and modifying the configuration with jumpers requires specialist knowledge and may only be carried out by specially trained personnel! If you are not  suitably qualified, do not attempt the procedure yourself. Refer instead to a qualified professional.
Take care when opening the amplifier and when modifying the configuration, in order to avoid damage to the amplifier and injury to persons. Follow each step of the  instructions exactly. The manufacturer shall not be liable for any damage to devices or injury to persons resulting from improper handling!

1. Fully disconnect the amplifier from the mains (pull out the mains plug)!
2. Disconnect all cables from the amplifier.
3. In order to be sure than no dangerous voltage is still present inside the amplifier, wait for at least 1 minute before opening the housing!
4. Loosen and remove the 2 screws on each side of the amplifier A , the 4 labelled screws on the back B and one screw on top of the amplifier C with a suitable tool (9  screws in total). Make a note of the corresponding positions for the 3 different types of screw.
5. Pull the housing lid backwards off the housing.
6. Pull the jumpers indicated in the second picture D from the corresponding contacts (interior back of device).
7. Push the housing lid from the back on to the housing and screw it closed with the previously removed screws.

The EMERGENCY channel’s signal is now no longer routed to the line output AUX OUT.

RACK MOUNTING (rack mounting kit LDIMARK optionally available)
The optionally available rack mounting kit LDIMARK includes rack-mount brackets and connectors for installing a single IMA 30 installation mixing amplifier, as well as for  adjacently installing two amplifiers in a 19” rack. The set includes: 2x rack-mount brackets with short sides A , 1x rack-mount bracket with long sides B , 2x small plates for  the back C , 2x rectangular plates for the bottom D , 4x M4 flat-headed screws for the rack-mount brackets, 8x M3 countersunk screws for plate D .

Installing a single amplifier requires a rack-mount bracket with short sides A and the rack-mount bracket with long sides B . Screw the bracket with the short sides to the left  or right side of the amplifier and the bracket with the long side on to the opposite side. Use the included M4 flat-headed screws for this.

To install two amplifiers alongside each other in a 19” rack, you will need the two small plates to join for connecting the amplifiers on the back C , the two rectangular plates  to join the amplifiers on the bottom D and the two rack-mount brackets with short sides A . Loosen the screws on the back at the corresponding positions and use them to  screw on the plates C . Screw the connectors D , as illustrated below, on to the corresponding positions on the amplifiers with the included M3 countersunk screws. Use the  M4 flat-headed screws to screw the rack-mount brackets with the short sides A on to the sides of the devices.

UNDER-TABLE MOUNTING (rack-mount bracket included in optionally available rack mounting kit LDIMARK).
For under-table mounting, there are two M4 screw holes located on the upper edge of both sides of the housing. Use the included M4 flat-headed screws to tightly screw the  two rack-mount brackets A with short sides to each side of the housing as illustrated. The amplifier can now be attached in a suitable position below a desktop.

TECHNICAL DATA

Emergency Input

< 0.01% (AUX OUT, -6 dBu, 20-20 kHz, Gain max, 20 kHz BW)
Frequency response| 10 Hz – 20 kHz (Low-Z SPK OUT, -3 dB)
10 Hz – 20 kHz (AUX OUT, -3 dB)
Input Impedance| 10 kOhm (Balanced)
SNR| >90 dB (SPK OUT, -6 dBu, CH Gain max (0 dB), Master Gain min (-inf), 20 kHz BW, aweighted)

87 dB (AUX OUT, -6 dBu, CH Gain max (0 dB), 20 kHz BW, a-weighted)
SNR (Best conditions)| > 90 dB (SPX OUT, +18 dBu, Gain max (0 dB), Master Gain max (0 dB), 22 kHz BW, aweighted)
110 dB (AUX OUT, +18 dBu, Gain max (0 dB), 22 kHz BW, a-weighted)
CMRR| > 48 dB (SPK OUT, AUX OUT, -6 dBu 1 kHz)
Gain| -Info to 29 dB
VOX Threshold| 0%: Off, 25%: 1 dBu, 50%: -11 dBu, 100%: -28 dBu
Priority Contact closure| +5VDC Normally Open for dry contact
Connector| 1x 5.08mm Terminal Block 5-pin
Standby wake up threshold| -40 dBu

Mic/Line inputs 1-2

Nominal input sensitivity| Mic: -36 dBu (Sine 1 kHz, Gain max)
Line: +1 dBu (Sine 1 kHz, Gain max)
---|---
Nominal input clipping| Mic: -17 dBu (Sine 1kHz)
Line: +19dBu (Sine 1kHz)
THD+N| Mic: < 0.2% (SPK OUT, -38 dBu, 20-20 kHz, Gain max, 20 kHz BW)
< 0.2% (AUX OUT, -38 dBu, 20-20 kHz, Gain max, 20 kHz BW)
Line: < 0.1% (SPK OUT, +4 dBu, 20-20 kHz, CH Gain max, Master Gain max (0 dB), 20 kHz BW) < 0.05% (AUX OUT, +4 dBu, 20-20 kHz, CH Gain max, 20 kHz BW)
Frequency response| Mic: 170 Hz – 20 kHz (SPK OUT, -3 dB)
150 Hz – 20 kHz (AUX OUT, -3 dB)
Line: 19 Hz – 20 kHz (SPK OUT, -3 dB)
20 Hz – 20 kHz (AUX OUT, -3 dB)
Input Impedance| Mic: 1.2 kohms (Balanced)
Line: 10 kohms (Balanced)
SNR| Mic: >80 dB (SPK OUT, -38 dBu, Gain max (0 dB), Master Gain max (0 dB), 22 kHz BW, a-weighted)

80 dB (AUX OUT, -38 dBu, Gain max (0 dB), 22 kHz BW, a-weighted)
Line: >85 dB (SPK OUT, +4 dBu, CH Gain max (0 dB), Master Gain max (0 dB), 20 kHz BW, a-weighted)
89 dB (AUX OUT, +4 dBu, CH Gain max (0 dB), 20 kHz BW, a-weighted)
SNR (Best conditions)| Mic: >90 dB (SPX OUT, -18 dBu, CH Gain max (0 dB), Master Gain (-20 dB), 20 kHz BW, a-weighted)
100 dB (AUX OUT, -18 dBu, Gain max (0 dB), 20 kHz BW, a-weighted)
Line: >90 dB (SPX OUT, +18 dBu, CH Gain max (0 dB), Master Gain (-14 dB), 20 kHz BW, a-weighted)
103 dB (AUX OUT, +18 dBu, CH Gain max (0 dB), 20 kHz BW, a-weighted)
CMRR| Mic: > 40 dB (SPK OUT, AUX OUT, 1 kHz)
Line: > 45 dB (SPK OUT, AUX OUT, 1 kHz)
Gain| Mic: -Inf to 45dB (SPK) / 38 dB (AUX Out)
Line: -Inf to 22dB (SPK) / 0 dB (AUX Out)
Phantom Power| +24V, 10mA Switchable
VOX Threshold| Mic: 0%: Off, 25%: -36 dBu, 50%: -48 dBu, 100%: -66 dBu
Line: 0%: Off, 25%: 1 dBu, 50%: -11 dBu, 100%: -28 dBu
Priority Contact closure| +5VDC Normally Open for dry contact B41
Connector| Mic/Line1: 5-pin Terminal Block, pitch 5.08mm + 1 XLR/6.3mm Jack combo connector
Mic/Line2: 3-pin Terminal Block, pitch 5.08mm + 1 dual RCA Mono Summed
Standby wake up threshold| Mic: -70 dBu
Line: -35 dBu (Line), -40 dBu (Mono Sum)

Chime

Music inputs – CD/AUX

dB), 20 kHz BW)
< 0.01% (AUX OUT, -6 dBu, 20-20 kHz, CH Gain max, 20 kHz BW)
Frequency response| 20 Hz – 20 kHz (SPK OUT, -3 dB)
20 Hz – 20 kHz (AUX OUT, -3 dB)
Input Impedance| 20 kOhm (Unbalanced)
SNR| >86 dB (SPK OUT, -4 dBu, CH Gain max (0 dB), Master Gain max (0 dB), 20 kHz BW, a-weighted)

90 dB (AUX OUT, -6 dBu, CH Gain max (0 dB), 20 kHz BW, a-weighted)
SNR (Best conditions)| >90 dB (SPX OUT, +10 dBu, CH Gain max (0 dB), Master Gain (-16 dB), 20 kHz BW, a-weighted)
104 dB (AUX OUT, +10 dBu, Gain max (0 dB), 20 kHz BW, a-weighted)
Gain| -If to 5 dB (AUX), 27dB (SPK)
Standby wake up threshold| -45 dBu

Music input – BT

THD+N| < 0.2% (SPK OUT, -10 dBFs, 20-20 kHz, Gain max, 20 kHz BW)
< 0.2% (AUX OUT, -10 dBFs, 20-20 kHz, Gain max, 20 kHz BW)
---|---
Frequency response| 25 Hz – 20 kHz (SPK OUT, -3 dB)
25 Hz – 20 kHz (AUX OUT, -3 dB)
SNR| >80 dB (SPK OUT, -10 dBFs, Gain max (0 dB), 20 kHz BW, a-weighted)

80 dB (AUX OUT, -10 dBFs, Gain max (0 dB), 20 kHz BW, a-weighted)
SNR (Best conditions)| >86 dB (SPX OUT,  0 dBFs, CH Gain max (0 dB), Master Gain (-10 dB), 20 kHz BW, a-weighted)
93 dB (AUX OUT, 0 dBFs, Gain max (0 dB), 20 kHz BW, a-weighted)

Amplifier Output

60 Hz – 20 kHz (HI-Z, -3 dB)
Tone Control| BASS: +-10dB (100Hz), TREBLE: +-10dB (10 kHz)
Protection| Audio Limiter (10dB range), Over/Under voltage, Overtemperature, Short-Circuit, Offset-Detection

Aux Output

Power Supply

General

MANUFACTURER´S DECLARATIONS

MANUFACTURER‘S WARRANTY & LIMITATIONS OF LIABILITY
You can find our current warranty conditions and limitations of liability at: https://cdn-shop.adamhall.com/media/pdf/MANUFACTURERS-DECLARATIONS_
LD_SYSTEMS.pdf To request warranty service for a product, please contact Adam Hall GmbH, Adam-Hall-Str. 1, 61267 Neu Anspach / Email: Info@adamhall.com / +49 (0)6081 / 9419-0.

CORRECT DISPOSAL OF THIS PRODUCT
(valid in the European Union and other European countries with a differentiated waste collection system)
This symbol on the product, or on its documents indicates that the device may not be treated as household waste. This is to avoid environmental damage or personal injury due to uncontrolled waste disposal. Please dispose of this product separately from other waste and have it recycled to promote sustainable economic activity. Household users  should contact either the retailer where they purchased this product, or their local government office, for details on where and how they can recycle this item in an  environmentally friendly manner. Business users should contact their supplier and check the terms and conditions of the purchase contract. This product should not be mixed with other commercial waste for disposal.

FCC STATEMENT
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:

1. This device may not cause harmful interference, and
2. This device must accept any interference received, including interference that may cause undesired operation

CE COMPLIANCE
Adam Hall GmbH states that this product meets the following guidelines (where applicable):
R&TTE (1999/5/EC) or RED (2014/53/EU) from June 2017
Low voltage directive (2014/35/EU)
EMV directive (2014/30/EU)
RoHS (2011/65/EU)
The complete declaration of conformity can be found at www.adamhall.com.
Furthermore, you may also direct your enquiry to info@adamhall.com.

EU DECLARATION OF CONFORMITY
Hereby, Adam Hall GmbH declares that this radio equipment type is in compliance with Directive 2014/53/EU.
The full text of the EU declaration of conformity is available at the following internet address:
www.adamhall.com/compliance/
Adam Hall GmbH | Adam-Hall-Str. 1
61267 Neu-Ansbach | Germany
Phone: +49 6081 9419-0
adamhall.com

References

• Eventtechnik Lösungen | Adam Hall Group
• LD Systems® | Your Sound. Our Mission.
• Eventtechnik Lösungen | Adam Hall Group
• Downloads | Service | Adam Hall Shop
• LD Systems® | Your Sound. Our Mission.
• cdn-shop.adamhall.com/

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