Prestel PAD-2075 150W Class D Amplifier with DSP and Dante User Manual

: July 20, 2024
: Prestel

Table of Contents

Prestel PAD-2075 150W Class D Amplifier with DSP and Dante
Product Usage Instructions
Introduction
Features
Package Contents
Specifications
Operation Controls and Functions
Dante Web GUI User Guide
RS-232 Control Command
Connection Diagram
FAQ
Read User Manual Online (PDF format)
Download This Manual (PDF format)

Prestel PAD-2075 150W Class D Amplifier with DSP and Dante

Specifications

Input : 1x Dante Network audio input, 1x LINE balanced stereo 0dBu/10k input
Output : 1x Dante Network audio output, 1x Stereo or constant voltage 70V/100V speaker output, 1x LINE balanced stereo output
Input Sensitivity : Full power@0.775V (0dBu)
Output Power : DC power supply: 2x 75W @ 4/8, 1x 150W @ 8, 1x 150W @ 70V/100V
Maximum Voltage Gain : 27 – 30dB SE / 39 – 42dB BTL
Amplifier Type : Class D
Frequency Response : THD+N (1KHz @ 1W) 0.04%
Signal to Noise Ratio : RS-232Web GUI
Control : LINE IN [Analog audio, Balanced 2CH, Max input level 2VRMS], LINE OUT [Analog audio, Balanced 2CH, Max output level 2VRMS], DANTE [Digital audio 2×2 in/out, PCM 2CH 44.1K-96KHz 16/24Bit], AMP OUT [Analog audio, Balanced 2CH, Max output level 24.5VRMS], 70V/100V AMP OUT [Analog audio, Unbalanced 1CH, Max output level 70V/100VRMS]
ESD Protection

Product Usage Instructions

Connection
Connect the appropriate input sources to the corresponding inputs using the provided connectors
Powering On
Ensure the power cord is securely connected to the amplifier and a power outlet. Turn on the amplifier using the power switch.
Setting Input Levels
Adjust the input sensitivity levels based on your audio input sources to achieve optimal performance.
Adjusting Output Settings
You can switch between Lo-Z and Hi-Z output modes to match the speaker installation type. Adjust the output EQ and volume control as needed.
Control Options
You can control the amplifier using RS-232, LAN, or Web GUI for flexible operation.

Thank you for purchasing this product
For optimum performance and safety, please read these instructions carefully before connecting, operating or adjusting this product. Please keep this manual for future reference.

Surge protection device recommended
This product contains sensitive electrical components that may be damaged by electrical spikes, surges, electric shock, lighting strikes, etc. Use of surge protection systems is highly recommended in order to protect and extend the life of your equipment.

Caution
The product requires the use of UTP connectors. Please connect in direct interconnection method and do not cross-connect.

Introduction

This product is designed as a two-channel amplifier using class D amplifier technology. It can be used for powering low impedance (4Ω/8Ω) stereo systems with a maximum power of 2 x 75 Watt, while bridging to a constant voltage (100V and 70V) is possible with a maximum output power of 150 Watt. It features Dante 2CH digital inputs and outputs, and balanced or unbalanced line level analog inputs and outputs.
This amplifier can be controlled via RS-232, LAN and Web GUI. It also features built-in DSP, auto-standby and maximum durability. It is suitable for a vast range of AV installations.

Features

Dante 2CH digital audio, balanced or unbalanced line level analog inputs
Dante 2CH digital audio, balanced or unbalanced line level analog and AMP outputs
Built-in audio DSP processor
Switching between Lo-Z and Hi-Z can be achieved to adapt to various types of speaker installation.

In Lo-Z output mode, single-channel 150 Watt or two-channel 2 x 75 Watt 4Ω/8Ω can be selected. In Hi-Z output mode, single-channel 150 Watt with 70V/100V can be selected.

Independent input gain, output EQ and volume control
48KHz sampling rate, 24bit independent A/D and D/A converters
5-12V trigger input
Auto standby
Flexible control via RS-232, LAN and Web GUI
Half rack design/one rack design

Package Contents

1 x 150W Class D Amplifier
3 x 5pin-3.81mm Phoenix Connector (male)
2 x 4pin-5.08mm Phoenix Connector (male)
6 x Mounting Ear
24 x Machine Screw
1 x AC (100-240V) Multinational Power Cord (1.5 meters)
1 x User Manual

Specifications

Technical

Input| 1x Dante Network audio input

1x LINE balanced stereo 0dBu/10kΩ input

Output

| 1x Dante Network audio output

1x Stereo or constant voltage 70V/100V speaker output 1x LINE balanced stereo output

Audio Format

| LINE IN [Analog audio, Balanced 2CH, Max input level 2VRMS]

LINE OUT [Analog audio, Balanced 2CH, Max output level 2VRMS]

DANTE [Digital audio 2×2 in/out, PCM 2CH 44.1K-96KHz 16/24Bit]

AMP OUT [Analog audio, Balanced 2CH, Max output level 24.5VRMS]

70V/100V AMP OUT [Analog audio, Unbalanced 1CH, Max output level 70V/100VRMS]

ESD Protection| Human-body Model:

±8kV (Air-gap discharge) , ±4kV (Contact discharge)

Connection
Input:| 1x LINE IN [5pin-3.81mm Phoenix Connector] 1x DANTE [RJ45 connector]

Output:

| 1x LINE OUT [5pin-3.81mm Phoenix Connector]

1x 4/8Ω AMP OUT [MSTB 2.5-GF-5.08, 4-pin locking

phoenix, 5.08mm]

1x 70V/100V AMP OUT [MSTB 2.5-GF-5.08, 4-pin locking

phoenix, 5.08mm]

Control:

| 1x RS-232/TRG [5pin-3.81mm phoenix connector] [TRG: 5-12V trigger input to turn on/off the amplifier]

1x LAN [RJ45 connector]

Mechanical

Operation Controls and Functions

Front Panel

No.	Name	Function Description
1	Power LED	When the product is powered on, the red power LED is on.

2

| ****

ID (show me) LED

| This LED indicates the presence of the product. It can be controlled through Web GUI or API command. For example, when selecting the “On” option for “DANTE Identification” on the System page

of the Web GUI, the ID (show me) LED on the front panel will flash,

so that you can find the corresponding machine in the system.

3

| ****

LINE/DANTE LED

| Input signal source indicators. When the DANTE or LINE IN port is selected as the signal input channel, the corresponding green LINE/DANTE LED is on.

Note: The DANTE port is the signal input channel by default.

4

| ****

VOL LED

| The main audio volume of the system is displayed in five green segments, with each segment corresponding to 20% of the volume. 50% of the main audio volume is displayed by default after system initialization.

Note: The audio volume can be controlled through Web GUI or API

command.

5| SIGNAL L/R LEDs| Left and right channel signal indicators of the stereo audio. When there is stereo audio signal, the LEDs will be on.
6| PROTECT LED| When the machine is protected by overtemperature, overcurrent or overvoltage, the PROTECT LED is on.

Rear Panel

No.	Name	Function Description
1	LAN port	Connect to a PC for Web access. The default IP address is

192.168.0.200.

2

| ****

RS-232/TRG

port

| RS-232: Serial control port, used for RS-232 signal pass-through or controlling this product via RS-232 commands.
TRG: T trigger signal input port, effective at high level. When this port is connected to a 5V/12V trigger voltage, the amplifier will be mute. After trigger is disconnected, the amplifier can output audio normally.
3| RESET button| Press and hold this button for 5 seconds to restore to factory default settings.
4| SPEAKER

switch

| Speaker high-low resistance switch, used to switch among Lo-Z (4Ω/8Ω), Hi- 70V and Hi-100V.
5| DANTE port| Dante audio input and output port, using dynamic IP by default.
6| LINE IN port| Balanced stereo audio input port, with a Max input level of 2Vrms.
7| LINE OUT port| Balanced stereo audio output port, with a Max output level of 2Vrms.

8

| ****

4/8Ω OUT port

| 4/8Ω speaker output port. When this port is connected to a 4/8Ω speaker and the SPEAKER switch is dialed to 4/8Ω, the audio will be output from this port normally.

9

| 70/100V OUT

port

| 70/100V speaker output port. When this port is connected to a 70/ 100V speaker and the SPEAKER switch is dialed to 70/100V, the audio will be output from this port normally.
10| Power port| 100-240V AC 50/60Hz power input port.
11| Power switch| Press the power switch to turn on/off the power supply.

Dante Web GUI User Guide

There is a built-in Dante Web GUI for the amplifier. The operation method is shown as below:

Connect the amplifier and PC to the same Ethernet Switch with two Network cables.
Set the Network connection setting of PC to be “Obtain an IP address Automatically”.
Open the Dante Controller software on the PC, and find the Dante device on the Routing page, as shown in the figure below.
Click the Device Info tab to check the IP address of the Dante device.
Input the IP address of Dante device into your browser on the PC to enter the login interface of the Dante Web GUI.
The default usernames and passwords are as below:
- Username User Admin
- Password 1234 1234
Select the default username “Admin” and input the password “1234”, then click the “Login” button to enter the Information page of Dante Web GUI.

Information Page

The Information page provides basic information about the model name, software version and IP information.

Preset Pagec

You can set up to 5 preset scenes on the Preset page.

Preset Name: You can name the preset scene. (Chinese name is not supported.)
Preset Save: Click the Save button to save the scene.
Preset Clear: Click the Clear button to clear the saved scene.
Preset Recall: Click the Recall button to recall the saved scene.

Audio Page

Source Select

Line In: Click “Line In” to select the LINE IN port as the signal input channel for audio output.
Dante In: Click “Dante In” to select the DANTE port as the signal input channel for audio output.

Input Setting: You can respectively set the output volume or mute/unmute the audio for Line In\Dante In.

Output Setting

Master Out : You can respectively set the output volume or mute/unmute the audio for Speaker Out\Line Out\Dante Out, or set them together when turning on three options synchronously.
Speaker Out\Line Out\Dante Out: Click the drop-down list of Mix to select the audio output channel for Speaker Out\Line Out\Dante Out. You can set the delay, increase/decrease the audio or mute/unmute the audio.

GEQ Setting

Output : Click the drop-down list to select the output channel.
Equalizer : Click the buttons to set the equalizer.
- Flat : Set all EG to 0db.
- Custom1 : Set EQ for custom 1.
- Custom2 : Set EQ for custom 2.

Network Page

Network Configuration: You can set the IP Mode (DHCP/Static), IP Address, Subnet Mask, Gateway, Telnet Port and Domain Name.

Note : The Domain Name “HDP-PA150D.local” can be used to login the Web GUI. After setting up, click “Save” to take effect, or you can click “Cancel” to cancel the setting.

System Page

Account Passwords: You can modify the login password for User and Admin. After setting up, click “Save” to take effect.

System Utilities

Power On : Click “ON/OFF” to power on/off the amplifier.
Dante Identification: Click the drop-down list to set the display status of the ID LED on the front panel of the amplifier.
Input Trigger : Click the drop-down list to set the input trigger mode.
Front Panel Lights : Click the drop-down list to set the display status of the VOL LED on the front panel of the amplifier.
RS-232 Baud Rate: Click the drop-down list to set the RS-232 baud rate. After setting up, click “Save” to take effect.
Auto Standby Time: Drag the slider to set the auto standby time.
Reboot: Click “Reboot” to reboot the amplifier.
Restore Factory Settings: Click this button to restore the amplifier to factory settings.
Export Settings: Click this button to export configuration files.
Import Settings : Click this button to import configuration files.

RS-232 Control Command

The product also supports RS-232 command control. Connect the RS-232 port of the product to a PC with a 3-pin phoenix connector cable and an RS-232 to USB cable. The connection method is as follows.

Then open a Serial Command tool on PC to send ASCII commands to control the product. The ASCII command list about the product is shown as below.

ASCII Command

Serial port protocol: Baud rate: 115200 (default), Data bits: 8bit, Stop bits:1, Parity bit: none TCP/IP protocol port: 8000
x – Parameter 1, y – Parameter 2
Command Code| Function Description| Example| Feedback| Default Setting
System Setting

help

|

Get the list of all commands

|

help

| ===================

Help Info

MCU 1.1.0 Web 1.1.0

help

Get the list of all

commands r type

Get device model

r fw version

Get Firmware version

………………….

===================

|

List all API

commands

?

|

Get the list of all commands

|

?

| ===================

Help Info

MCU 1.1.0 Web 1.1.0

help

Get the list of all

commands r type

Get device model

r fw version

Get Firmware version

………………….

===================

|

List all API

commands

r status

|

Get device current status

|

r status

|

Get the unit all status: power, FAN, audio source, in/out volume, mute, mix, delay time, L-Inverter, R-Inverter, amplifier mode, EQ, trigger, standby time,

baud rate, network status

|
Command Code| Function Description| Example| Feedback| Default Setting
---|---|---|---|---
r fw version| Get Firmware version| r fw version| MCU 1.1.0 Web 1.1.0|

s power on

|

Power on the device

|

s power on

| Power on

System Initializing… Initialization Finished! MCU 1.1.0 Web 1.1.0

s reboot

|

Reboot the device

|

s reboot

| Reboot…

System Initializing… Initialization Finished! MCU 1.1.0 Web 1.1.0

|

s reset

| Reset system settings to default (Should type “Yes” to confirm, “No” to discard)|

s reset

| Sure to Reset System Settings To Default? Type “Yes” after next prompt to confirm…|

s reset all

| Reset system and network settings to default (Should type “Yes” to confirm, “No” to discard)|

s reset all

| Sure to Reset System and Network Settings To Default? Type “Yes” after next prompt to confirm…|

s auto stb x

| Set system auto standby time

x=0: auto standby off

x=[1-120]: auto standby time (mins)

|

s auto stb 10

| Set auto standby time:

10mins

|

10

r auto stb| Get system auto standby time| r auto stb| Auto standby time: 10mins|
s lcd on/off/15/30/

60

| Set volume LCD always on or auto turn off in power on state or turn on 15s/30s/60s| s lcd on s lcd off

s lcd on 15

| Set LCD light always on Set LCD light always off Set LCD light on 15s|

on

s idled on 15

| Set ID LED light always

on

Set ID LED light on 15s

|

off

r idled| Get id LED on/off status| r idled| ID LCD light always on|

s trigger on/off x

| Set trigger on/off with trigger level:x

x=0: Low Level (0V) Mute Output x=1: High Level (5-12V) Mute Output

|

s trigger on 1 s trigger off

|

Set trigger on with high level

Set trigger off

|

off

r trigger| Get trigger on/off status| r trigger| Trigger on with high level|

s rsb x

| Set serial port baud rate to xbps x=(115200,57600,38400,19200, 9600,4800)|

s rsb 115200

|

Set baud rate to 115200

|

115200

r rsb| Get serial port baud rate| r rsb| Baud rate 115200|

s fan x on/off

| Set fan:x auto turn on or always

off

x=[0-2] 0:All, 1:Fan1, 2:Fan2

|

s fan 0 on

|

Set all fan on

|

on

x=[1-2] 1:Line, 2:Dante

s input x vol y

| Set input:x volume to y

x=[0-2] 0:All, 1:Line, 2:Dante

y=[0-100] volume value

|

s input 1 vol 50

|

Set input line volume: 50

|

50

r input x vol| Get input:x volume value x=[0-2] 0:All, 1:Line, 2:Dante| r input 1 vol| Input line volume: 50|
Command Code| Function Description| Example| Feedback| Default Setting
---|---|---|---|---
s input x vol+| Increase input:x volume x=[0-2] 0:All, 1:Line, 2:Dante| s input 1 vol+| Increase input line

volume: 52

|
s input x vol-| Decrease input:x volume x=[0-2] 0:All, 1:Line, 2:Dante| s input 1 vol-| Decrease input line

volume: 50

|
s input x mute

on/off

| Set input:x mute on/off

x=[0-2] 0:All, 1:Line, 2:Dante

| s input 1 mute on| Set input line mute on|
r input x mute| Get input:x mute on/off

x=[0-2] 0:All, 1:Line, 2:Dante

| r input 1 mute| Input line mute on|
Output Setting

s master member

x y z

| Set master output member

(x/y/z=0-1)

x=0: Exclude Speaker Out x=1: Include Speaker Out y=0: Exclude Line Out y=1: Include Line Out z=0: Exclude Dante Out z=1: Include Dante Out

|

s master member 1 1 1

|

Set master member:

1 1 1

|

1 1 1

50

status

| r master mute r mute| Master mute on|

s output x vol y

| Set output:x volume to y

x=[0-3] 0:All, 1:Speaker, 2:Line, 3:Dante

y=[0-100] volume value

|

s output 1 vol 50

|

Set output speaker

volume: 50

|

50

r output x vol

| Get output:x volume value

x=[0-3] 0:All, 1:Speaker, 2:Line, 3:Dante

|

r output 1 vol

| Output speaker volume:

50

|

s output x vol+

| Increase output:x volume

x=[0-3] 0:All, 1:Speaker, 2:Line, 3:Dante

|

s output 1 vol+

| Increase output speaker

volume: 52

|

s output x vol-

| Decrease output:x volume

x=[0-3] 0:All, 1:Speaker, 2:Line, 3:Dante

|

s output 1 vol-

| Decrease output speaker

volume: 50

|
s output x mute

on/off

| Set output:x mute on/off

x=[0-3] 0:All, 1:Speaker, 2:Line, 3:Dante

| s output 1 mute on| Set output speaker mute on|

r output x mute

| Get output:x mute on/off status x=[0-3] 0:All, 1:Speaker, 2:Line, 3:Dante|

r output 1 mute

|

Output speaker mute on

|

s output x mix y

| Set output:x mix:y

x=[0-3] 0:All, 1:Speaker, 2:Line, 3:Dante

y=[1-4] 1:Stereo, 2:Left, 3:Right, 4:Left and Right

|

s output 1 mix 1

|

Set output speaker mix:

Stereo

|

Stereo

Command Code| Function Description| Example| Feedback| Default Setting
---|---|---|---|---

r output x mix

| Get output:x mix mode

x=[0-3] 0:All, 1:Speaker, 2:Line, 3:Dante

|

r output 1 mix

| Output speaker mix:

Stereo

|

s output x delay y

| Set output:x delay:y

x=[0-3] 0:All, 1:Speaker, 2:Line, 3:Dante

y=[0-50]: Delay Time, Millisecond

|

s output 1 delay 50

|

Set output speaker delay:

50ms

|

0

r output x delay

| Get output:x delay value

x=[0-3] 0:All, 1:Speaker, 2:Line, 3:Dante

|

r output 1 delay

| Output speaker delay:

50ms

|

s output x eq y

val z

| Set output:x GEQ index:y to value:z

x=[0-3] 0:All, 1:Speaker, 2:Line, 3:Dante

y=[1-31]: EQ index z=[0-20]: EQ value(dB)

|

s output 1 eq 1 val

10

|

Set output speaker GEQ index 1: 20dB

|

10

r output x eq y val

| Get output:x GEQ index:y value x=[0-3] 0:All, 1:Speaker, 2:Line, 3:Dante

y=[1-31]: EQ index

|

r output 1 eq 1 val

|

Output speaker GEQ index 1: 20dB

|

s output x eq preset y

| Set output:x GEQ to preset:y x=[0-3] 0:All, 1:Speaker, 2:Line, 3:Dante

y=[1-3] 1:Flat, 2:Custom1, 3:Custom2

|

s output 1 eq preset 1

|

Set output speaker

GEQ: Flat

|

1

r output x eq preset

| Get output:x GEQ preset

x=[0-3] 0:All, 1:Speaker, 2:Line, 3:Dante

| r output 1 eq preset| Output speaker GEQ:

Flat

|

s output x eq clear

| Set output:x GEQ clear

x=[0-3] 0:All, 1:Speaker, 2:Line, 3:Dante

|

s output 1 eq clear

| Set output speaker GEQ

clear

|
Preset Setting

s preset save x

| Save the current unit’s settings to

the specified preset:x

All settings except network setting. x=[1-5]: Preset 1 – Preset 5

|

s preset save 1

|

Save to preset 1

|

s preset recall x

| Recall a specified preset:x into unit All settings except network setting. x=[1-5]: Preset 1 – Preset 5|

s preset recall 1

|

Recall preset 1

|

s preset clear x

| Clear a specified preset:x

All settings except network setting. x=[1-5]: Preset 1 – Preset 5

|

s preset clear 1

|

Clear preset 1

|

s preset x name y

| Set preset:x name to y x=[1-5]: Preset 1 – Preset 5 y: Preset name, max 16 characters|

s preset 1 name

MeetingRoom 1

| Set preset 1 name: MeetingRoom 1|
r preset x name| Get preset:x name

x=[1-5]: Preset 1 – Preset 5

| r preset 1 name| Preset 1 name:

MeetingRoom 1

|
Network Setting

r ipconfig

|

Get the Current IP Configuration

|

r ipconfig

| IP Mode: DHCP IP: 192.168.62.106

Subnet Mask: 255.255.255.0

Gateway: 192.168.62.1

TCP/IP port: 8000

MAC: 6C:DF:FB:0C:B3:8E (Static: 169.254.100.200

255.255.0.0 169.254.100.1)

|
Command Code| Function Description| Example| Feedback| Default Setting
---|---|---|---|---
r mac addr| Get network MAC address| r mac addr| MAC: 6C:DF:FB:0C:B3:8E|

s ip mode x

| Set network IP mode to static IP

or DHCP

x=[0-1]

0.Static, 1.DHCP

|

s ip mode 0

| IP mode: Static

(Please use “s net reboot!” command or repower device to apply new config!)

|

1

r ip mode| Get network IP mode| r ip mode| IP mode: DHCP|

s ip addr xxx.xxx. xxx.xxx

|

Set network IP address

|

s ip addr

192.168.1.100

| IP address: 192.168.0.100 (Please use “s net reboot!” command or repower

device to apply new

config!)

DHCP on, Device can’t config static address, set DHCP off first.

s subnet xxx.xxx.xxx.xxx

|

Set network subnet mask

|

s subnet

255.255.255.0

| Subnet Mask: 255.255.255.0

(Please use “s net reboot!” command or repower device to apply new config!)

DHCP on, Device can’t config subnet mask, set DHCP off first.

s gateway xxx.xxx.xxx.xxx

|

Set network gateway

|

s gateway

192.168.1.1

| Gateway: 192.168.1.1 (Please use “s net reboot!” command or repower device to apply new config!)

DHCP on, Device can’t

config gateway, set

DHCP off first.

(x=1~65535)

s net reboot

|

Reboot network modules

|

s net reboot

| Search for IP, Please

wait …!

IP Mode: DHCP IP: 192.168.62.106

Subnet Mask: 255.255.255.0

Gateway: 192.168.62.1

TCP/IP port: 8000

Telnet port: 23

MAC: 6C:DF:FB:0C:B3:8E (Static: 169.254.100.200

255.255.0.0

169.254.100.1)

|
Command Code| Function Description| Example| Feedback| Default Setting
---|---|---|---|---
Password Setting
s admin password x| Set admin login password

(x=[16 characters max])

| s admin password

1234

(x=[16 characters max])

| s user password

1234

Connection Diagram

PC or Control System

FAQ

Q: What type of connectors are recommended for connecting to this amplifier?
A: UTP connectors are required for proper connection. Please follow the direct interconnection method mentioned in the manual.

Q: How can I protect my equipment from electrical spikes?
A: It is recommended to use surge protection devices to safeguard your equipment from electrical spikes, surges, and lightning strikes.