IHOS DP-4008 Professional Audio System User Manual
- June 5, 2024
- IHOS
Table of Contents
PROFESSIONAL AUDIO SYSTEM
User Manual
MAINTENANCE AND STANDARD CONFIGURATION LIST
Attention: When it doesn’t work, it is not always the problem of the device itself, maybe it is damaged in the shipment. Please check carefully by the following ways before you take the device to repair. If you sent the device back to our company for repair, please package it, we will provide you with good services.
| Failure | Reason | Solution |
|---|---|---|
| Output and screen don’t work. | The power socket has no power. | Repair the |
power supply system.
The power plug is not in.| Connect the power plug correctly, and make sure it
is connected well
AC 220V fuse blows.| Pull out the power plug and change the same type of fuse.
Output works but the screen don’t work.| Signal wires don’t connect well.|
Connect signal wires well
according to this user manual.
The main volume is turned down.| Adjust the volume.
Signal wires don’t connect correctly.| Connect input correctly.
There is no output signal.| Check the sound input system.
Only one output works.| Signal wires don’t connect well.| Connect signal wires
well according to this user manual.
The balanced potentiometer is to the extreme.| Adjust the balanced
potentiometer to the middle.
Signal wires don’t connect correctly.| Connect signal wires correctly.
Something wrong with the signal wires.| Check if the signal wires are open
circuits.
There is no sound in the MIC or the sound is so low.| MIC hasn’t been turned
on.| Turn on the MIC.
MIC hasn’t been plugged in completely.| Plug in the MIC completely.
MIC volume has been turning down.| Adjust the MIC volume to a reasonable
level.
MIC doesn’t work.| Change the MIC.
Feedback happens or there is a lot of noise.| MIC is too near to the
loudspeaker.| Keep the MIC far away from the loudspeaker.
MIC volume is too high.| Adjust the MIC volume to a reasonable level.
MIC index is not the right one.| Change the MIC of the same index.
MIC hasn’t been plugged in completely.| Plug in the MIC completely.
SAFETY FOR USERS
All safety and operating instructions should be read before the product is
operated.
Power This unit should only use the same type as shown in this manual.
Power Cord Protection: Protect the power cord from being crushed;
especially the power plugs. Humidity: The unit should always be far away from
water and/or moist surfaces.
Electronic Shock: Be careful that liquid is not spilled inside the unit
through ventilation openings.
Temperature: Do not install near any heat sources such as radiators,
stoves, heating resistance, or other appliance(s) that produce heat.
Opening or Moving Covers: Refer any/all repairs or servicing to qualified
service personnel. To prevent the risk of shock, do not attempt to
service/repair this equipment yourself. Opening or moving covers may expose
you to dangerous voltage or another hazard (s.)
Cleaning: Do not use volatile liquid such as alcohol, paint thinner or
gasoline. Clean only using a dry cloth.
Smell: In the event of any suspicious burning smells or smoke, please
power off and unplug the power cord.
Long Term Idle:
- For your safety, please power off and unplug the power cord so as to prevent fire potential.
- Prevent water, metal, or other objects from falling inside the unit to avoid fire or electronic shock. If any of these occur, power off and unplug immediately and contact the authorized service center for diagnostic.
Warning: Do not tuck cable or cords under the unit or between other objects. Do not put the power cord in the crowd. Avoiding fire or electronic shock.
INTRODUCTION AND CONTENTS
Thank you for choosing this product. Be sure to inspect packaging and contents for any damages incurred during shipping and transit. Please read this User Manual before you connect or operate this device.
FEATURES
This device is a Professional Loud Speaker management based on DSP technology, with powerful functions and 1U frame height. It comes with 2 in 4 out, 2 in 6 out, 4 in 6 out, and 4 in 8 out, flexible for multiple X-over modes. Especially suitable for use at the scene of the performance.
- 96KHz sampling frequency, 32-bit DSP processor, 24-bit A/D and D/A converter.
- USB, RS232 interface, and WiFi are available for PC software.
- 12 groups of user settings.
- 8 bands PEQ, Gain (±20dB) are for each channel. Lo-shelf and Hi-shelf are for output channels.
- Adjustable HPF/LPF. Type: Bessel, Butterworth (12dB, 18dB, 24 dB for selection) and Linkwitz-Riley(12dB,18dB,24dB or 48dB for selection).
- The parameters of HPF/LPF can be adjusted independently, and the asymmetric crossover functions can be realized.
- Each input and output channel has Delay, Polarity, and mute, max delay of 1000ms. Unit of delay can be chosen from ms, m, or ft.
- Gain, Limiter, and Signal Input can be set for each output channel. Multiple output channels can be linked to set synchronously.
CONNECTING INSTRUCTIONS
Connector operation: These series are with USB, RS232, and WiFi connectors.
Signal level: As with other signal processing equipment, the device should be
with a suitable signal level to reduce S/N. These series are with menu choices
to avoid this problem. When selecting a signal level, Please choose max level
±6dB when the LED indicator just lights up. As we add 3dB, at this time,
peaking clipping is actually 9dB. To operate EQ, one should reduce the input
level to avoid peak clipping of gain. Attention: Max input level in technical
parameter form is not safety level but peaking level. To make sure peaking
clipping is not less than the next device, and keep some extra level.
Ground connecting: All the audio Ground Pin should be connected with the power
switch Ground Pin, as well as the device case. The power supply of this device
must be properly grounded. Signals ground (OV) should be connected with the
device case ground. Avoiding Ground Loop, Signal cable can only be Grounded at
the XLR interface.
FRONT PANEL AND FUNCTIONS
- USB interface Users can connect to the computer by USB to update the programs of this device or control this device by the software.
- Input Mute & Edit button A. Short press: Switch between Mute and Non-mute B. Long press: Enter the input edit function interface
- Output Mute & Edit button A. Short press: Switch between Mute and Non-mute B. Long press: Enter the output edit function interface
- Level indicator: for signal level display
- Color LCD screen It shows the menu function and all kinds of adjusting parameters.
- Select & operation button
- Data setting knob
REAR PANEL AND FUNCTIONS
- Power switch
- Power Socket: AC power supply inputs, with a cable in them.
- Cooling fan
- RS232 port: Use for connecting with PC device. (Refer to the system connecting diagram. )
- Antenna port: for connecting with an antenna.
- Ethernet port
- Output channel: 8 balanced output channels (Out1-Out8), XLR socket.
- Input channel: 4 balanced input channels (INA—IND), XLR socket.
TERMINAL CONNECTION DIAGRAM
Terminal Connection Diagram
MENU FUNCTION INSTRUCTIONS
LCD Screen
Upon powering on, the boot interface on the LCD will appear as illustrated:
The boot interface shows the basic parameters and state of the device clearly, users can adjust it conveniently. Press the left and right buttons on the panel to adjust the machine’s effect.
MENU
Press the MENU button, then the screen will show as follow. Then if you press
the left and right buttons, the screen will show the following menus: INA…IND
input interface, OUT1…OUT8 output interface, MIX, System. Press the up and
down buttons to choose the function you want to adjust, then rotate the knob
to adjust the parameter.
Input function settings Input buttons (The 4 buttons are the 4 input channels: INA-IND, short press, or long-press);
- Short press: Switch between Mute and Non-mute (When in mute, the bottom red right will be on; In non-mute, the bottom red right will be off.)
- Long press: Enter the input edit function interface (the top red right will be on.)
- Take INA input as an example to set the parameter: Long press the INA button (around 2 seconds) to enter the input A edit function interface. Press the up and down buttons to set parameters.
Output function settings
Output buttons (The 8 buttons are the 8 output channels: OUT1-OUT8, short
press, or long-press);
- Short press: Switch between Mute and Non-mute (When in mute, the bottom red right will be on; In non-mute, the bottom red right will be off.)
- Long press: Enter the input edit function interface (the top red right will be on.)
- Take OUT1 input as an example to set the parameter: Long press the OUT1 button (around 2 seconds) to enter the OUT1 edit function interface. Press the up and down buttons to set parameters.
Mix Menu settings :
Press the right button to enter the MIX Menu settings, and the screen will
show as follow:
System Menu settings :
Press the right button to enter the System Menu settings, and the screen will
show as follow:
Connecting introduction:
- RS232: Use the suitable cable to connect, indicator light will be on once connect successfully, then control it by PC software.
- USB: Use the suitable cable to connect, indicator light will be on once connect successfully, then control it by PC software.
- WiFi: Search device WiFi name on PC, device name is the last four numbers of code number. Input password “12345678” to connect.
- Ethernet port
BASIC OPERATION
Take WiFi connection for example:
Device name “HMLink_x x x x” :
-
Turn on the device, then open your laptop to search WiFi network, picture as follows:
-
After searching, the target device name appears, and the picture is as follows:
-
Click “next”, and connect successfully. The WiFi indicator is lighting up at the same time. Open software to control the device.
-
Network device name and Password setting.
The device has a fixed name and a default connecting password, which can be set according to customers’ requirements. Picture as follows:
PC software operation introduction:
Power on the device, PC interface picture as follows:
Connecting interface picture is as follows:
System menu Introduction:
| Picture 1: Connect PC software with the device.
---|---
| Picture 2: Choose what model you need.
| Picture 3: Program menu: Load, Save, Import, Export.
| Picture 4: System and language setting.
TECHNICAL PARAMETERS
Input/Output channel| 2lnput/4Output| 2lnput/6Output|
4lnput/6Output I| 4lnput/8Output
---|---|---|---|---
Input channel| Mute| ✓
Delay| Each input channel has delay control, adj range:0-1000ms
Polarity| In phase(+) & reversed phase( -)
EQ| 8 band PEQ, FREQ:20Hz-20KHz, bandwidth:0.05-3oct,Step:0.05oct,
Gain:±20dB,Step :0 .1 dB.
Output channel| Mute| ✓
MIX| Each input channel can be selected for each output channel.
Gain| adj range: +12dB–36dB step: 0.1dB
Delay| Each input channel has delay control, adj range:0-1000ms.
Polarity| In phase(+) & reversed-phase( -)
EQ| Each output channel has 8 band EQ: 3 Modes : PEQ/Lo-shelf/Hi-shelf
X-over| LPF,HPF, PF mode:Linkwitz-Riley /Bessel/ Butterworth , FREQ : 20Hz-
20KHz, (Slop) :Bessel/ Butterworth: 12/18/24dB Linkwitz-Riley :12/24/36/48dB
Compressor| Gate level:+20dBp–40dBu Start time : 0. 3ms-100ms , Release time:
Release time can be set as twice,2/4/6/8/16/32times.
Processor| 96KHz sampling freq,24 bit AD/DA conversion.32 bit DSP chip
processor
Input impedance| Balance 20 K 0
Output impedance| Balance 100 0
Input range| <.+18dBu
Frequency| 20Hz-20KHz(0–0.5dB)
S/N| >105dB
THD| <0.01% (Output=0dBu/1KHz)
Separation| >80dB(1KHz)
PC Port| Front panel has 1 port USB
RMS| C25W
Power| AC 110V/240V 50Hz/60Hz
Gross Weight| 3.15kg
Package Dimensions(WxHxD)| 570x260x90 mm
Specifications are subject to change without notice for further improvement
STANDARD CONFIGURATION LIST
Number| Name| Quantity
1| Device| 1 PCS
2| User Manual| 1 PCS
3| Power cord| 1 PCS
Attention
To reduce the risk of fire or electric shock, do not expose this apparatus to
rain or moisture!