Amate Audio AmateAudio LMS608 DSP Controller User Manual [EN]

LMS608

Loudspeaker Management System

User’s manual

May 2022

LMS608 Feb 2020

2 Amate Audio

Safety Instructions

1. All safety instructions must be read before using this device.

2. Keep and follow these instructions

3. Heed all warnings

4. The exclamation mark in the triangle indicates internal components which if

replaced can affect safety.

5. The lightning symbol within the triangle indicates the presence of dangerous
uninsulated voltages.

6. Only clean the device with a dry cloth.

7. Do not block any ventilation openings. Install in accordance with the manufacturer’s

instructions.

8. Do not install the device near heat sources such as radiators, heaters or other heat­emitting elements.

9. Protect the power cord from being walked on or pinched, particularly at plugs,
convenience receptacles, and the point where they exit from the apparatus

10. The equipment must be repaired by qualified technical service personnel when:
A. The mains supply cable is damaged, or
B. Any object or liquid has damaged the device; or
C. The equipment does not function normally or correctly; or
D. The equipment has been exposed to the rain; or
E. The chassis is damaged

11. Disconnect the device in the case of electric storms or during long periods of

disuse.

12. WARNING – To reduce the risk of fire or electric shock, do not expose this device
to rain or moisture

13. The equipment shall not be exposed to dripping or splashing and no objects filled
with liquids, such as vases, shall be placed on the device.

14. For hanging and installation, use manufacturer recommended accessories only.

LMS608 Feb 2020

3 Amate Audio

1 INTRODUCTION 5

2 FEATURES 5

3 MAIN CONTROLS AND CONNECTIONS 6

3.1 THE FRONT PANEL 6

3.2 THE REAR PANEL 7

4 QUICK INSTALLATION 7

4.1 BEFORE YOU START 7

4.2 POWER UP 7

4.3 1 CONTROL SOFTWARE 8

4.4 CONNECTING THE DEVICE TO A COMPUTER 9

4.4.1 USB 9

4.4.2 ETHERNET 9

4.5 SYSTEM OPTIMIZATION 10

4.6 TYPICAL APPLICATION EXAMPLE 11

5 OPERATING THE DEVICE 12

5.1 INPUT MENUS 12

5.1.1 INPUT GAIN 12

5.1.2 INPUT SELECTION 12

5.1.3 DELAY 12

5.1.4 CROSSOVER 12

5.1.5 PARAMETRIC EQ 13

5.1.6 DYNAMICS COMPRESSOR 14

5.1.7 LIMITER 14

5.1.8 PHASE – PHASE INVERSION 14

5.1.9 CHANNEL LINK 15

5.2 OUTPUT MENUS 15

5.2.1 INPUT GAIN 15

5.2.2 MIXER 15

5.2.3 DELAY 15

5.2.4 CROSSOVER 15

5.2.5 PARAMETRIC EQ 16

5.2.6 DYNAMICS COMPRESSOR 17

5.2.7 LIMITER 17

5.2.8 PHASE – PHASE INVERSION 18

5.2.9 CHANNEL LINK 18

5.3 SYSTEM MENU 18

5.3.1 LOAD - PROGRAM RECALL 18

5.3.2 SAVE - PROGRAM STORE 19

5.3.3 ACCESS LEVEL – LOCK THE FRONT PANEL THROUGH A PASSWORD 19

5.3.4 VERSION INFO 20

5.3.5 ROUTING 20

5.4 COPY/PASTE KEYS 21

LMS608 Feb 2020

4 Amate Audio

6 PRESETS 22

7 OPERATING THE SOFTWARE 23

7.1 DEVICE LIST 23

7.2 DEVICE OPTIONS 24

7.2.1 MAIN WINDOW 24

7.2.2 X-OVER WINDOW 24

7.2.3 INPUT / OUTPUT WINDOW 24

7.2.4 FILE MENU 25

7.2.5 HARDWARE MENU 25

8 QUICK REFERENCE 27

9 TROUBLESHOOTING 28

9.1 HOW TO PERFORM A FIRMWARE UPGRADE 28

9.2 PASSWORD RECOVERY 28

10 SPECIFICATIONS 29

11 ANNEX 31

LMS608 Feb 2020

5 Amate Audio

1 INTRODUCTION

The LMS608 is a complete digital loudspeaker management system designed for the
touring or fixed sound installation markets. The absolute latest in available technology
is utilized with 64-bit floating point processors and high performance 24-bit Analogue
Converters. The high-bit DSP prevents noise and distortion induced by truncation
errors of the commonly used 24-bit fixed-point devices. A complete set of parameters
include I/O levels, 2 second-delay per channel, polarity, 10 bands of parametric EQ
per channel, multiple crossover selections, full function compressor and peak limiter.
Precise frequency control is achieved with its 1 Hz resolution. Inputs and outputs can
be routed in multiple configurations to meet any requirements.

The LMS608 can be controlled or configured in real time on the front panel or with the
intuitive PC/Mac GUI accessed via the USB interface or Ethernet. Software upgrade
for CPU and DSP via PC keeps the device current with newly developed algorithms
and functions once available. Multiple setup storage and system security complete
this professional package.

Shipped contents:

- LMS608/608D unit

- AC power cord

- USB cable for PC connection

2 FEATURES

LMS608

- Electronically balanced inputs

- Matched-impedance balanced outputs

- 64-bit floating point DSP

- High Performance 24-bit A/D Converters

- 1 Hz Frequency Resolution

- 10 Parametric Equalizers for each Input and Output (EQs can be set as Bell, Notch,

High Shelf, Low Shelf, Notch, Allpass, Band Pass, High Pass, Low Pass)

- Multiple Crossover types: Butterworth, Bessel, Linkwitz-Riley, up to 8th order (48dB
/ oct).

- Up to 2 seconds delay per each input/output

- RMS compressor and ultra-fast attack Peak Limiter.

- Precise Level, Polarity and Delay

- 2-Line x 16 Character Blue Backlit LCD Display

- Signal LED’s on every Input and Output

- Security Lock

- USB Interface for PC/Mac Control and Configuration (on front panel)

- CPU and DSP firmware upgrade via PC/Mac interface

- 4 Analog Inputs, 2 Digital Inputs (AES/EBU) and 8 Outputs with flexible routing.

- 125dB dynamic range (inputs) / 120dB dynamic range (outputs)

- 96kHz sampling rate

- Very low latency (0.35ms)

LMS608 Feb 2020

6 Amate Audio

- Ethernet connection (RJ45, on back panel)

- Storage of up to 100 Program Setups

3 MAIN CONTROLS AND CONNECTIONS

3.1 The front panel

A) Mute keys – Press for Mute/Unmute input and output channels. When a channel

is muted, this key will light up in red for indication.

B) Input signal LEDs - Show the current level of the Signal: Signal (-36dBu), -6dBu,

Limit (orange), Clip (red). The Limit led lights up if a gain reduction is taking place
(due to a programmed compressor). The Clip LED references to the device's
maximum headroom (+24dBu).

C) USB Connector – A standard type B USB connector for interface with a PC or

Mac. Software and driver must be installed prior to usage.

D) Menu Control keys - There are 6 menu keys: <Channel (Previous Channel),

Channel> (Next Channel), <Select (Previous Option), Select> (Next Option), Menu
and Exit. The functions of each key is explained below:

<Channel:

Choose previous channel for editing.

Channel>:

Choose next channel for editing

<Select:

Select previous parameter for editing

Select>:

Select next parameter for editing

Menu:

This key has different functions depending on when it is used:

- In the Main Screen: Access the System Menu.

- In the Main Menu allows entering the System Menu.

Exit:

Exit to the Main Menu

E) LCD - Shows all the necessary information to control the unit.
F) Rotary Thumb Wheel – Turn the wheel to change parameter data values. Click

on it to confirm the value entered. The center click of the wheel is also use to
browse different parameters of the same feature.

G) Output signal LEDs - Show the current level of the output Signal: Signal (-36dBu),

-6dBu, Limit (orange), Clip (red). The Limit led lights up if a gain reduction is taking
place (due to a programmed compressor). The Clip LED indicates a gain this
reduction is higher than 12dB.

LMS608 Feb 2020

7 Amate Audio

3.2 The rear panel

A) Power switch - Controls power On/Off.
B) Main Power - Connects via a standard IEC socket. A compatible power cord is

supplied with the unit. The input voltage range is 85 to 240VAC, 50-60Hz.

C) XLR input and outputs - Separate 3-pin XLR connectors are provided for each

audio input and output. The device's output stage employs the balanced
impedance topology. All I/O connectors have pin 1 as ground (shield), pin 2 as +
and pin 3 as -.

D) Ethernet port – RJ45 connector to connect with the PC via Ethernet. Use CAT-5

or CAT-6 cable.

E) AES/EBU Input – This XLR connector accepts a 2-channel digital input in

AES/EBU or S/PDIF format, 16 or 24-bit. Supported sample rates are 44.1, 48,

88.2 and 96 kHz.

4 QUICK INSTALLATION

4.1 Before you start

Before powering up the unit, make sure that the input and output XLR cables are in
good state and following the following pinning diagram: 1 for shield, 2 for live(+), 3 for
return (-) as defined by the AES14 standard.

Do not connect the unit to your computer before installing the software and the USB
Driver. Please refer to installation instructions in this manual.

When connecting the LMS608 to the amplifiers, mute the LMS608 outputs (or turn

down the amplifier’s volume knobs) until you configure your processing. Loudspeakers

may be damaged due to a wrong setup. It is advisable to unmute first the high
frequency channels: in case they are connected to low frequency drivers by mistake,
they cannot be damaged. Otherwise, high frequency speakers may be damaged
because of trying to reproduce low frequencies.

4.2 Power Up

After powering up the unit, all LEDs will be lit for about six seconds, while the following
message is displayed on the LCD:

Initialising...

B

D

LMS608 Feb 2020

8 Amate Audio

After that, the LMS608 unit displays its main screen:

Now the LMS608 unit is ready to operate. The screen shows the name of the unit
(above line) and the program name currently active (below line). The program
assigned is always the last program the user recalled or stored before powering down
the unit.

An admiration mark (!) beside the program name means that the program has been
modified but not stored. This symbol does not appear when the modified program is
the default preset.

4.3 1 Control Software

The LMS608 units are shipped with a Computer Software which provides a Graphic
User Interface (GUI) application - DSPLink. DSPLink allows the user to control the
LMS608 unit from a computer via the USB communication link or through Ethernet, in
models. For the USB connection, a driver must be installed (included with the DSPLink
installation package).
The GUI application makes it much easier to control and monitor the device, allowing
the user to get the whole picture on one screen. Programs can be recalled and stored

from/to Computer’s hard drive, thus expanding the storage to become virtually

limitless. See Section 6 of this manual for instructions to operate the software.
DSPLink is available for PC and Mac. A USB pen drive or CD-ROM with the software

is included in the original package of the unit. Check Amate Audio’s website for a latest
version download (www.amateaudio.com/DSPLink).

Installation for PC-Windows:
Double click the installation file, depending whether you have a 32 or a 64-bit system:
Amate_Audio_DSPLink_32_bit_v_10_X_X_BuildNr.msi
Amate_Audio_DSPLink_64_bit_v_10_X_X_BuildNr.msi
Follow the on-screen instructions. You may be prompted to install the Microsoft Visual
Runtime libraries before finishing the installation. Click the checkbox to proceed with
this action.

Installation for Mac:
First unzip the provided installation file:
Amate_Audio_DSPLink_v_10_X_X_BuildNr.mpkg.zip
Then select the .mkpg file with CONTROL+Click and select “Open”. Then follow the
on-screen instructions.

DEFAULT PRESET

AMATE AUDIO

! My_Preset

AMATE AUDIO

LMS608 Feb 2020

9 Amate Audio

4.4 Connecting the device to a computer

4.4.1 USB

WARNING: Always install the software package DSPLink before connecting your unit
to the computer. See previous section for details.

After installing DSPLink, please use the provided USB cable to connect the unit to
your computer. The first time you connect a device, the system will ask you to look for

the driver. Choose the option “do not look for updates and to automatically select the

best driver”.

Run DSPLink and the unit will be automatically detected.
Click on the arrow next to the detected unit to open the window for parameter edition.

4.4.2 Ethernet

Use a standard CAT5 or CAT6 cable with RJ45 connectors (not supplied) to connect
the unit to your Local Area Network. The most convenient way is to connect it to a
router that provides automatic IP addresses (DHCP enabled), and that is sharing the
same network with the computer in which you are running DSPLink. In this case the
unit will be detected and configured automatically.

For direct connection with a computer, or through a switch not supporting DHCP, then
you can either let your computer get an automatic IP of the ZeroConfig range, or
assign a fixed IP to it:

To obtain an automatic IP in the ZeroConfig range:

1. Connect the unit to the switch or computer. The computer network card’s

settings must specify “Obtain an automatic IP” (by default)

2. DSPLink will detect the unit through its MAC address.

3. After some time (it may take a couple of minutes), the system will assign the

address and notify the message “This connection has limited or no
connectivity”.

To set a fixed IP in the ZeroConfig range:

1. Open your Network Connection settings and edit TCP/IP address

2. Set the IP in the ZeroConfig Range (169.254.0.0 – 169.254.255.255)

3. Set a Subnet Mask as 255.255.0.0.

4. Other parameters such as Gateway or DNS Servers may be left blank.

5. Connect the unit to the network where your computer is connected to.

6. DSPLink will detect the unit

LMS608 Feb 2020

10 Amate Audio

4.5 System Optimization

In order to have a proper start of your system and an optimized configuration, follow
these steps by the first configuration:

1. Play a signal at the nominal level from your mixing desk, and set the input gain

of your processor to 0dB (Default Preset setting)

2. Set the crossovers that you want to use, while keeping the output gains also at

0dB.

3. With DISCONNECTED loudspeakers, turn up the volume of the power

amplifiers entirely clockwise (full volume).

4. Reduce the output gain and / or the output limiter setting to get the desired gain,

so that the amplifier is just clipping and the built-in limiters of your processor
are just limiting (Orange led blinking at the output channels).

5. Turn down the volume of the power amplifiers, connect your speakers, and

slowly increase the volume while checking the sound.

6. Check if the loudspeakers are reproducing distortion-free sound, and the limiter

LEDs are flashing or off, but not continuously on. If they are continuously on,
reduce the output gain of your processor.

7. If you cannot reach enough signal level, increase the processor's input gain or

turn up the level from your mixing desk.

LMS608 Feb 2020

11 Amate Audio

4.6 Typical application example

The following image depicts a possible application diagram, with 3 independent
audience zones.

LMS608 Feb 2020

12 Amate Audio

5 OPERATING THE DEVICE

5.1 Input Menus

To access the Input Menus press the <Channel or Channel> key. Press Exit to finish
editing or again <Channel or Channel> to edit other channels.

The following menus are available for each input channel. Please note that by default
the inputs and outputs channels are linked in groups of two. The following options are
shown for the input group composed of In1 and In2

5.1.1 Input Gain

Adjust the gain of each input, using the rotary knob.

5.1.2 Input Selection

Inputs 1&2 are always assigned to the analog inputs 1 and 2, while inputs 3&4 can be
assigned to the analog or digital source (AES/EBU).Turning the rotary knob, the
source can be selected.

5.1.3 Delay

Adjust the delay by turning the rotary knob. Push this knob to switch the unit between
ms, ft or m.

5.1.4 Crossover

• Low Pass – First adjust the Low Pass Filter cut-off frequency. To switch it off, turn

the rotary knob clockwise until frequency reaches 20 kHz.
Second, press the rotary knob and select from the available types and slopes:
Type: Butterworth, Slopes: 6dB, 12dB, 18dB or 24dB
Type: Bessel. Slopes: 6dB, 12dB, 18dB or 24dB
Type: Linkwitz-Riley. Slope: 12dB or 24dB

-1.25dB

In 12 Gain

Analog

In 34 Source

0.090ms

In 12 Delay

AES Stereo

In 34 Source
Freq: 15000Hz

In 12 LowPass

Type: BUT 24dB

In 12 LowPass

LMS608 Feb 2020

13 Amate Audio

• High Pass – First adjust the High Pass Filter cut-off frequency. To switch it off, turn

the rotary knob counter-clockwise until frequency reaches 20 Hz.
Second, press the rotary knob and select from the available types and slopes:

Type: Butterworth, Slopes: 6dB, 12dB, 18dB or 24dB
Type: Bessel. Slopes: 6dB, 12dB, 18dB or 24dB
Type: Linkwitz-Riley. Slope: 12dB or 24dB

5.1.5 Parametric EQ

Select between one of the 10 available Equalizers on each input channel by using the
keys < Select and Select >. Browse the parameters by turning the rotary knob and
push the knob to select and confirm the values. The following parameters can be
adjusted for each EQ:

• Freq - EQ center frequency.

• Gain - EQ level gain.

• Q - EQ Bandwidth. For shelving filters the Q sets the transition in dB/Oct. See Annex

1

for further information about the Q factor implementation in the LMS608.

• Type - Shape of EQ. The available types are:

Bell: Modifies the gain of a certain frequency range, with bell shape
Notch: Eliminates a range around a center frequency
Low-Shelf: Modifies the gain of all the range below a selected frequency.
High-Shelf: Modifies the gain of all the range above a selected frequency.
All Pass: Modifies the phase response, without influencing the frequency response.
Band Pass: Filters out all the range except the defined band.
High Pass: Filters out all the range below a certain frequency.
Low Pass: Filters out all the range above a certain frequency.

• Enabled – When set On, the currently selected EQ is on line.

Q: 2.36

In 12 PEQ 1

Enabled: On

In 12 PEQ 1
Type: BUT 24dB

In 12 HighPass

Freq: 40Hz

In 12 HighPass

Type: Bell

In 12 PEQ 1

Freq: 1000Hz

In 12 PEQ 1
Gain: 0.00dB

In 12 PEQ 1

LMS608 Feb 2020

14 Amate Audio

5.1.6 Dynamics Compressor

A true RMS compressor can be set to avoid the input signal go above a certain RMS
value. The following parameters can be adjusted:

• Thr. - Compressor Threshold. Sets the level at which the compressor will activate.

• Att. - Attack time. Time it takes the compressor to start actuating after reaching the

threshold.

• Hold - Hold time. Sets up a delay before the compressor enters the release cycle.

Useful for compressing low frequency long notes.

• Rel. - Release time. Time the compressor uses to return to unity gain after the signal

is below the threshold.

• Ratio - The compressor ratio determines the slope in which the signal is compressed.

The higher this value is, the higher the compression.

• Gain – The compressor make up Gain. Use it in case the level of the compressed

signal must be corrected (0dB by default)

5.1.7 Limiter

A peak-limiter can be set at each input. It is a zero attack time limiter, so it will
immediately act on the signal. The parameters that can be changed are:

• Thr. – Threshold: input level at which the signal will be limited.

• Rel. – The release value, expressed in dB/seconds

5.1.8 Phase – Phase inversion

Change the polarity of the channel by a 180º phase inversion. Select between Normal
or Inverted.

Thr.: 24.00dBu

In 12 Limiter

Thr.: 24.00dBu

In 12 Compr.:

Att.: 20ms

In 12 Compr.:

Hold: 10ms

In 12 Compr.:

Ratio: 5.00:1

In 12 Compr.:

Rel.: 200ms

In 12 Compr.:

Gain: 1.00dB

In 12 Compr.:

Rel.: 50

In 12 Limiter

Normal

In12 Phase:

LMS608 Feb 2020

15 Amate Audio

5.1.9 Channel Link

Input channels 1 & 2, and 3 & 4 can be linked in order to set the same parameters on
both. The factory setting is that channel 1 and 2 are linked and 3 and 4 too. Turn the
rotary knob set the link off.

5.2 Output Menus

To access the Input Menus press the <Channel or Channel> key. Press Exit to finish
editing or again <Channel or Channel> to edit other channels.

The following menus are available for each output channel. Please note that by default
the inputs and outputs channels are linked in groups of two. The following options are
shown for the output group composed of Out1 and Out2

5.2.1 Input Gain

Adjust the gain of each output, using the rotary knob.

5.2.2 Mixer

Select the level to be routed from each input by turning the rotary knob. Select 0dB for
maximum level of an input. To disable one input, turn the rotary knob counter­clockwise until “Off” is displayed. Push the rotary knob to select the next input. This
menu is only shown when channels are unlinked. The settings are kept after linking
the channels again.

5.2.3 Delay

Adjust the delay by turning the rotary knob. Push this knob to switch the unit between
ms, ft or m.

5.2.4 Crossover

• Low Pass – First adjust the Low Pass Filter cut-off frequency. To switch it off, turn

the rotary knob clockwise until frequency reaches 20 kHz.

On

In 12 Link:

0.50dB

Out12 Gain

0.000ms

Out12 Delay

Input 1 0.00dB

Out1 Mixer
Input 2 Off

Out1 Mixer

LMS608 Feb 2020

16 Amate Audio

Second, press the rotary knob and select from the available types and slopes:
Type: Butterworth, Slopes: 6dB, 12dB, 18dB or 24dB
Type: Bessel. Slopes: 6dB, 12dB, 18dB or 24dB
Type: Linkwitz-Riley. Slope: 12dB or 24dB

• High Pass – First adjust the High Pass Filter cut-off frequency. To switch it off, turn

the rotary knob counter-clockwise until frequency reaches 20 Hz.
Second, press the rotary knob and select from the available types and slopes:

Type: Butterworth, Slopes: 6dB, 12dB, 18dB or 24dB
Type: Bessel. Slopes: 6dB, 12dB, 18dB or 24dB
Type: Linkwitz-Riley. Slope: 12dB or 24dB

5.2.5 Parametric EQ

Select between one of the 10 available Equalizers on each output channel by using
the keys < Select and Select >. Browse the parameters by turning the rotary knob and
push the knob to select and confirm the values. The following parameters can be
adjusted for each EQ:

• Freq - EQ center frequency.

• Gain - EQ level gain.

• Q - EQ Bandwidth. For shelving filters the Q sets the transition in dB/Oct. See Annex

1

for further information about the Q factor implementation in the LMS608.

• Type - Shape of EQ. The available types are:

Bell: Modifies the gain of a certain frequency range, with bell shape
Notch: Eliminates a range around a center frequency
Low-Shelf: Modifies the gain of all the range below a selected frequency.
High-Shelf: Modifies the gain of all the range above a selected frequency.
All Pass: Modifies the phase response, without influencing the frequency response.
Band Pass: Filters out all the range except the defined band.
High Pass: Filters out all the range below a certain frequency.
Low Pass: Filters out all the range above a certain frequency.

Q: 2.36

Out12 PEQ 1

Freq: 1500Hz

Out12 LowPass

Type: BUT 24dB

Out12 LowPass

Type: BUT 24dB

Out12 HighPass

Freq: 40Hz

Out12 HighPass

Type: Bell

Out12 PEQ 1

Freq: 1000Hz

Out12 PEQ 1
Gain: 0.00dB

Out12 PEQ 1

LMS608 Feb 2020

17 Amate Audio

• Enabled – When set On, the currently selected EQ is on line.

5.2.6 Dynamics Compressor

A true RMS compressor can be set to avoid the output signal go above a certain RMS
value. The following parameters can be adjusted:

• Thr. - Compressor Threshold. Sets the level at which the compressor will activate.

• Att. - Attack time. Time it takes the compressor to start actuating after reaching the

threshold.

• Hold - Hold time. Sets up a delay before the compressor enters the release cycle.

Useful for compressing low frequency long notes.

• Rel. - Release time. Time the compressor uses to return to unity gain after the signal

is below the threshold.

• Ratio - The compressor ratio determines the slope in which the signal is compressed.

The higher this value is, the higher the compression.

• Gain – The compressor make up Gain. Use it in case the level of the compressed

signal must be corrected (0dB by default)

5.2.7 Limiter

A peak-limiter can be set at each input. It is a zero attack time limiter, so it will
immediately act on the signal. The parameters that can be changed are:

• Thr. – Threshold: input level at which the signal will be limited.

• Rel. – The release value, expressed in dB/seconds

Thr: 12.00dBu

Out12 Limiter

Enabled: On

Out12 PEQ 1
Thr.: 24.00dBu

Out12 Compr.

Att.: 20ms

Out12 Compr.

Hold: 10ms

Out12 Compr.

Ratio: 5.0:1

Out12 Compr.

Rel.: 200ms

Out12 Compr.

Gain: 3.0dB

Out12 Compr.

Rel: 50dB

Out12 Limiter

LMS608 Feb 2020

18 Amate Audio

For Amate Audio passive cabinets, there is a tool that easily computes the correct value
of the limiter threshold for each output. These values are the result of a deep study made
in out R+D facilities, thus its use guarantee protection without compromising the
performance of the system. This tool is available at

http://www.amateaudio.com/en/LimCal.

5.2.8 Phase – Phase inversion

Change the polarity of the channel by a 180º phase inversion. Select between Normal
or Inverted.

5.2.9 Channel Link

Output channels can be linked in order to set the same parameters on both. The
factory setting is that output channels 1&2, 3&4, 5&6 and 7&8 are linked. Turn the
rotary knob set the link off.

5.3 System Menu

The System Menu allows the user to control and change parameters that are related
to the system behaviour and general operation. It can be accessed by pressing the
Menu key on the front panel. The available options are:

5.3.1 Load - Program Recall

The DSP unit has a built-in non-volatile memory that can store different program
setups. A program can be recalled using this menu. Use the rotary knob to browse the
desired program to load and click it to accept

Confirm your selection by turning the rotary knob until “YES” is in capital letters and

press enter again.

My_Preset

Load: 1

On

Out12 Link:

Normal

Out12 Phase:

NO/yes

Load Preset ?

no/YES

Load Preset ?

LMS608 Feb 2020

19 Amate Audio

5.3.2 Save - Program Store

A program can be stored using this menu. The old program with the same program
number will be replaced. Once the program is stored in the flash memory, it can be
recalled at a later time, even after power down.

Select the number of slot where the current setting will be stored by rotating the
thumbwheel and pressing it to confirm. After that, it is required to enter a name for the
new preset, using the rotary wheel to select the characters and the center click to
confirm:

Once you finish typing the name of the preset, press again the Menu key to confirm.
Press the rotary knob to select “YES”. A confirmation message is displayed.

5.3.3 Access Level – Lock the front panel through a password

To lock the system, turn the rotary knob until the word “Locked” is displayed. The

system will prompt for a password.

The password may be up to 8 characters long. When entering shorter passwords, use
the Menu key to finish and confirm. Use the Exit key to go back and make the
password shorter.

WARNING: If blank spaces are included in the password, they will be stored and must
be entered in the same position in order to unlock the device.
NOTE: The factory default password is “Password”

no/YES

Save Preset?

Empty

Save: 4

Unlocked

Access Level:

My_Pre_

Set Presetname:

My_Preset

Preset Saved OK

**** Locked ****

Access Level:

MyPass

Set Password:

MyPass

Confirm Password

LMS608 Feb 2020

20 Amate Audio

After that the system will be LOCKED and only the Mute buttons and the Menu key
will be active.

To UNLOCK the device, proceed with the following steps:
Press the menu key. The Lock screen will appear. Turn the rotary knob
counterclokwise to select “Unlocked”

Then enter the password. Click enter to finish.

5.3.4 Version Info

Shows the device software and hardware information. Turn the rotary knob to display
the information available:

5.3.5 Routing

The routing function assigns the inputs to the outputs using pre-established templates.
The templates are shown in the table below:

Routing

Out 1

Out 2

Out 3

Out 4

Out 5

Out 6

Out 7

Out 8

Stereo 1­Way

In1

In2

Off

Off

Off

Off

Off

Off

Stereo 2­Way

In1

In2

In1

In2

Off

Off

Off

Off

Stereo 3­Way

In1

In2

In1

In2

In1

In2

Off

Off

Stereo 4­Way

In1

In2

In1

In2

In1

In2

In1

In1

Mono 8­Way

In1

In1

In1

In1

In1

In1

In1

In1

Access Level:

Unlocked

Access Level:

Pas_

Enter Password

SN: 0000010262

Version Info

SW:10.0.3.105796

Version Info

HW: 4.9.3

Version Info

169.254.50.254

IP Address

B896:74:01:01:C1

MAC Address

LMS608 Feb 2020

21 Amate Audio

The unit assigns the Input source for the corresponding outputs when each routing
mode is selected. The Stereo configuration will also activate the links between paired
channels (Out 1&2, Out 3&4, Out 5&6, Out 7&8)

NOTE: The configuration mode configures the input sources when selected. The user
can change the source afterwards if desired. It does not keep the configuration in
memory.

5.4 Copy/Paste Keys

The Copy and Paste keys can be used to copy the parameters of one configuration
item (i.e. a parametric EQ, a compressor, a delay, etc.) from one channel to another.

The process is shown with the following example: The PEQ2 of Out3 will be copied to
PEQ1 of Channel 5.

First, browse the menu until any of the parameters of the item PEQ2 of Out3 is
displayed:

At this point press the “Copy” key on the front panel. Note that all parameters in PEQ2

(Frequency, Type, Gain and Q) will be copied. The message “Copied” will be
displayed.

Now browse until the LCD displays the destination parameter and press the “paste”

key. A confirmation message is shown:

Push the rotary knob and all the parameters are copied to the new item.
NOTE: If the copied item is pasted to linked channels, the parameter will be copied to

both channels.

Stereo 3-Way

Routing:

Freq: 350Hz

Out3 PEQ 2
Push to Confirm

Paste Item?
Freq: 350Hz

Out5 PEQ 1

LMS608 Feb 2020

22 Amate Audio

6 PRESETS

The LMS608 is shipped with several presets pre-loaded in the unit that help in the set-up
of the sound system. These presets have been designed and selected for deliver an active
loudspeaker response (with internal amplification) when using them with our passive
cabinets, as well for positive interfering in low frequency range and for protecting the
sound system in over-voltage case.

In the following chart, the list of the presets is displayed:

NOTE: Outs 7&8 have in these presets a default (flat response) configuration.
In the case of set-ups without subwoofer units, the presets configure the passive

loudspeakers as full-range loudspeakers so they will reproduce all the frequency range.
For the case of set-ups with subwoofers, the output channels from 1 to 4 (Corresponding

to the “tops”) are configured with a high pass filter, and the channels 5 to 6 (Corresponding
to the “subs”) are configured with a low pass filter and a boost of 3 dB in the tuning

frequency. In this way we obtain a set-up with a balanced frequency response.
These presets are read-only, in consequence they can’t be overwritten, edited nor deleted.

If you want to edit a preset, before is necessary to copy it to another free memory
available.

The presets don’t include the proper limiter threshold, since it depends in the number of
cabinets and amplifier type that are part of the sound system. For computing the proper
limiter threshold, it is highly recommended to use the tool we have available in the
following link: amateaudio.com/LimCal

Nr

Type

Name

OUT1 - OUT4

OUT 5 & 6

1

Read-Only

N6P

N6P / FLAT

N6P / FLAT

2

Read-Only

N6P & N12WP

N6P / XOVER

N12WP / LPF90+3

3

Read-Only

N26P

N26P / FLAT

N26P / FLAT

4

Read-Only

N26P & N12WP

N26P / XOVER

N12WP / LPF90+3

5

Read-Only

N12P

N12P/ FLAT

N12P/ FLAT

6

Read-Only

N12P & N18WP

N12P / XOVER

N18WP / LPF90+3

7

Read-Only

N12PR

N12PR / FLAT

N12PR / FLAT

8

Read-Only

N12PR & N18WPR

N12PR / XOVER

N18WPR/LPF90+3

9

Read-Only

N15P

N15P / FLAT

N15P / FLAT

10

Read-Only

N15P & N18WP

N15P / XOVER

N18WP / LPF90+3

11

Read-Only

N15P & N218WP

N15P / XOVER

N218WP/LPF90+3

12

Read-Only

N15PR

N15PR / FLAT

N15PR / FLAT

13

Read-Only

N15PR & N18WPR

N15PR / XOVER

N18WPR/LPF90+3

14

Read-Only

KEY10

KEY10 / FLAT

KEY10 / FLAT

15

Read-Only

KEY10 & N12WP

KEY10 / XOVER

N12WP / LPF90+3

16

Read-Only

KEY10 & N18WP

KEY10 / XOVER

N18WP / LPF90+3

17

Read-Only

KEY12

KEY12 / FLAT

KEY12 / FLAT

18

Read-Only

KEY12 & N18WP

KEY12 / XOVER

N18WP/ LPF90+3

LMS608 Feb 2020

23 Amate Audio

7 OPERATING THE SOFTWARE

7.1 Device List

Once the software DSPLink is started, a window with the list of connected devices is
shown. The main controls are as following:

MUTE: The device will be completely muted when this button is clicked. Click it

again to unmute.

IDENTIFY: When pressing this button, the device will blink 5 times its leds on the
front panel. Useful for installations with several DSP connected to the computer, in
order to identify each unit.

STANDBY: When this button is clicked, the DSP will go into standby mode (low
power consumption). In this mode, there is no output signal. Click the button again to
recover the normal operation mode.

EDIT: Open control window for full control of the device.

The following options are available in this window:

• File / Quit: Close the program.

• Tools

o Change software password: allows the user to create a password to

access the software. By default, no passwrod is needed. If a password
is set and then forgotten, the software must be reinstalled.

o New Group: create a group that associates 2 or more DSP.
o Enter Demo Mode: enables to use the software without a connected

device.

o Enable Update: Enables the firmware upgrade of the units in the list (an

Administrator password is required, see Section 8).

• Help

o Request Support: sends a report about a problem in the software,
o About: Shows basic info about the application

LMS608 Feb 2020

24 Amate Audio

7.2 Device Options

7.2.1 Main window
In this window the Preset options, the device name, and the input and output levels

and VUMeters, as well as the link and mute settings are displayed.
Here, also the source for In 3 & 4 can be selected. The available options are Analog

or AES.

7.2.2 X-over window
In this window all the crossover settings for each output are displayed and can be set.

The same information can be found on each channel’s window.

7.2.3 Input / Output window
When selecting one of the inputs or outputs on the left side, a window with all available

controls will be displayed: Mixer, PEQ, Xover, Gain, Mute, Polarity, Limiter and
Compressor.

To access all available parameters of the Compressor, click on the word
“COMPRESSOR” besides the Limiter control. A new window will display showing the
controls for Threshold, Attack, Hold, Release, Ratio and Makeup Gain.

LMS608 Feb 2020

25 Amate Audio

7.2.4 File Menu

• Open: Load a preset from a previously stored file.

• Save: Save current preset to a file in the hard disk.

• Restore Presets: Load a set of presets from a previously stored file.

• Backup Presets: Backup all the presets of the device to the hard disk.

• Quit: Exit the device’s main window.

7.2.5 Hardware Menu

• Enter Password: Enable access to advanced options. Some advanced
functionalities are User level disabled by default, to protect factory
configurations. To access advanced functionalities DSPLink access must be
set at Administrator level. To change the access level, the user must enter here
the following passwords:
User level: Password
Administrator level: Ad_min

LMS608 Feb 2020

26 Amate Audio

• Configure:

o Change password: change the factory default password. The new

password may have up to 8 characters. You will be first asked for the old
password.
NOTE: The factory default password is “Password” (case sensitive)

o Network Settings: allows to manually configure the IP of the device

(static IP).

o Power On Preset: Set here the preset that will be selected at startup.

The default setting is “last setting”.

o Global Access Rights: select which controls will be unlocked even the

“Lock Unit” control is selected. Click on the checkbox of the functions
that should be available to the user without entering a password:

o Output mode: pre-select the input assignment to outputs, in groups of

two (Dual Bridge or Mono).

o Routing: Changes the input assignments and links of outputs as

described in Section 5.3.5.

o AES -> Analog Failover: when this feature is On, and the unit is

operating with AES input, the processor will automatically switch to the
analog input if the AES signal is lost. A valid analog input must be
connected to the desired inputs.

• Lock unit: In order to lock the unit by password, select “Hardware > Lock Unit”.
To unlock the unit again, select “Hardware > Enter Password”.

• Go to Standby: the DSP will go into standby mode (low power consumption).
In this mode, there is no output signal. Is is equivalent to press on the Standby
button at the Device List.

• Set Pin: Set a 4-digit pin to allow the access to the unit via software. If the PIN
needs to be removed, select this function and leave the PIN field blank (the

message “Invalid PIN” will be shown). If the PIN is forgotten, a firmware

upgrade is needed (see Chapter 8).

• Status Details: A quick information window about the device is displayed.

LMS608 Feb 2020

27 Amate Audio

8 QUICK REFERENCE

Menu
Function

Channel

Parame
ter

Value

Units

Gain

I / O

Gain

-48 to +12; Step: 0.25

dB

Source

Inputs

Source

Analog / AES Stereo

Mixer

Outputs

Input
1/2/3/4

-48 to 0; Step: 0.25

dB

Delay

I / O

Delay

I: 0 to 2000; Step depends on range
O: 0 to 50

ms

LowPass /
High Pass

I / O

Freq.

20 to 20000; Step depends on range

Hz

Type

BUT 6dB / BES 6dB / BUT12 dB / BES
12 dB / LR 12 dB / BUT 18 dB / BES 18dB
/ BUT 24dB / BES24 dB / LR 24dB / LR
48dB

Enabled

On / Off

PEQ 1 to
PEQ 10

I / O

Freq.

20 to 20000; Step depends on range

Hz

Gain

-12 to 12; Step: 0.25

dB Q 0.2 to 25; Step: 0.1

Type

Bell / Notch / High Shelf / Low Shelf /
Allpass/ Band Pass/ High Pass/ Low
Pass

Enabled

On / Off

Compres­sor

I / O

Thr.

-48 to +24; Step: 0.25

dBu

Att.

1 to 10000; Step: 1

ms

Hold

1 to 10000; Step: 1

ms

Release

1 to 10000; Step: 1

ms

Ratio

1.2:1 to 25:1

Makeup
Gain

-12 to +12; Step: 0.25

dB

Limiter

Input

Thr.

-48 to +24; Step: 0.25

dBu

Rel.

10 to 100; Step: 1

dB/s

Limiter

Output

Thr.

-48 to +12; Step: 0.25

dBu

Rel.

10 to 100; Step: 1

dB/s

Phase

Output

Phase

Normal / Inverted

Link

I / O

Link

Off / On

LMS608 Feb 2020

28 Amate Audio

9 TROUBLESHOOTING

9.1 How to perform a firmware upgrade

To perform a firmware upgrade, proceed as following:
WARNING: In the Firmware Upgrade Process all your presets will be erased. Please

make a backup of them before upgrading the unit. During the upgrade process you
will be asked to perform this backup.

1. Connect the unit to the computer

2. Using DSPLink, enter the Device Main Window

3. Choose “Hardware > Enter Password”

4. Enter the administrator password, which is “Ad_min”

5. Go to “Hardware > Firmware Upgrade”

6. Be careful to answer “Yes” if you want your settings and presets to be backed
up

7. Wait until firmware is upgraded. Do not plug off or disconnect the unit from the
computer during this process.

8. Your presets will be restored automatically

9.2 Password recovery

The unit is shipped unlocked, so no password will be necessary unless the unit is
locked by the user. The default user password is “Password”.

In case this Password has been changed by the user (Using the Menu “Hardware >
Configure > Change Password”) and is no longer remembered, a Firmware Upgrade

is needed to re-establish the password to the default value (see previous section).

LMS608 Feb 2020

29 Amate Audio

10 SPECIFICATIONS

LMS608

Analog Inputs

Number

4

Input Impedance

21 kOhms

Maximum Level

+24 dBu

Type

Electronically balanced

Digital inputs

No. of channels / connectors

2 / 1 XLR3

Type

AES/EBU

Accepted formats

16 or 24 bit;

44.1, 48, 88.2 or 96kHz

Analog Outputs

Number

8

Maximum Level

+12 dBu

Type

Impedance Matched

Audio Performance

Frequency Response

20Hz to 20kHz (+/- 0.5dB)

Dynamic Range

116 dB (A-weighted)

Crosstalk

< -85 dB

THD

< 0.005%

Digital Audio Performance

Processing

64-bit

Analog Converters

High Performance 24-bit

Sampling Rate

96 kHz

Propagation Delay

350 us

Front Panel Controls

Display

2 x 16 Character. White Backlit

LCD

Level Meters

Per I/O: Signal Present, -6dB;

Limiter, Clip

Buttons

Illuminated Mute Controls, Menu

Controls

Dial Encoder

Rotary Thumb Wheel

Connectors

Analog Audio

3-pin XLR Pin 1: shield 2: live (+)

3: return (-)

Digital Audio (AES/EBU)

3-pin XLR

USB

Type B (on front panel)

Ethernet

RJ45 (on rear panel)

Power

Standard IEC Socket

General

Power

85 to 240 VAC (50 / 60 Hz)

Dimensions (H x W x D)

1U 19” Rack

44 x 483 x 165 mm

Weight

2.5kg

LMS608 Feb 2020

30 Amate Audio

System Parameters

No. of Programs

100

Program Names

16 character length

Security Lock

Password Lock/Unlock

NOTE: Specifications subject to change without notice

LMS608 Feb 2020

31 Amate Audio

11 ANNEX

1

For bell parametric filters (PEQ), the bandwidth definition differs among the different
DSP manufacturers. For this reason, it is difficult to successfully copy filter settings
between different processors.

The frequency span of the filter is defined by either the bandwidth or the Q factor.
These parameters are inversely proportional, meaning the bigger the bandwidth, the
smaller the Q. The formulas relating both parameters are:

𝑄 =

𝑓

0

𝑓𝐻− 𝑓

𝐿

=

𝑓

0

𝐵

𝐵 = 𝑓𝐻− 𝑓

𝐿

The border frequencies of the bandwidth are usually set at the point where the energy
decreases three decibels, as shown in Figure 1.

Fig. 1: Bandwidth graphical representation

The majority of audio processor manufacturers implement the Q in four different ways:
Bandpass-Q, Constant-Q, dB/2 and 3dB hybrid method. The first two are based in
analogue filters, while the last two take advantage of the capabilities of digital
processing.

The Bandpass-Q method builds the bell filter adding the response of a band-pass filter
plus a gain block to the input signal, as shown in Figure 2.

LMS608 Feb 2020

32 Amate Audio

Fig. 2: Block diagram of a bell filter

As shown in Fig. 2, when adding both processed and original signals at the output, the
bandwidth of the resulting signal is higher than the bandwidth of the bandpass filter
used. The Bandpass-Q method defines the Q of the bandpass filter block, and not of
the resulting filter. The difference is shown in Figure 3.

Fig. 3. Red line: Bandpass filter with 6dB gain. Dotted blue line: Parametric bell filter.

To avoid this difference, Constant-Q implementations lower the Q that the user selects
in the bandpass filter, just enough to compensate this difference. In consequence, the
resulting Q at the output is the same as the user expects. However, this solution
cannot be applied for filters with a peak gain lower than 3dB.

The dB/2 method always sets the bandwidth as one-half of the peak gain, so the
definition works no matter what the peak gain is. Amate Audio LMS608 uses the dB/2
method, because it keeps the bell shape independent from the peak gain.

The 3dB Hybrid Method works in two ways: If the peak gain is greater than 6dB, the
bandwidth is set at -3dB of the peak (Constant-Q), otherwise it uses the dB/2 definition,
setting the bandwidth to one-half of the peak gain.

Bandpass filter

Adding block

Filter gain

Input signal

INPUT

OUTPUT

DECLARATION OF CONFORMITY

In accordance with EN 45014:1998

Manufacturer’s Name: “AMATE AUDIO S.L.”
Manufacturer’s Address: C/ Perpinyà 25, Polígon Industrial Nord

08226 Terrassa, (Barcelona), SPAIN

Brand:

“AMATE AUDIO”

We declare under our own responsibility that:

Product:

Audio signal processor. Audio apparatus for professional use

Name: LMS608

Conforms to the following product specifications:

Safety: IEC 60065-01 + A1
EMC: EN 55022:2006

EN 55103-1:2009
EN 55103-2 2009
FCC Part 15

WARNING:

In accordance to EN55022, this is a class A product. In a domestic environment this product may cause radio
interference in which case the user may be required to take adequate measures.

Supplementary Information:

The product herewith complies with the requirements of the:
Low Voltage Directive 2006/95/EC

EMC Directive 2004/108/EC
RoHS Directive 2002/95/EC
WEEE Directive 2002/96/EC

With regard to Directive 2005/32/EC and EC Regulation 1275/2008 of 17 December 2008, this product is
designed, produced, and classified as Professional Audio Equipment and thus is exempt from this Directive.

Date of issue:

January 28th, 2020

Signature:

Juan Amate Lopez

General Manager

Conformity Marking

LMS608 Feb 2020

34 Amate Audio

NOTES:

LMS608 Feb 2020

35 Amate Audio

LMS loudspeaker management systems have been

designed, engineered and manufactured in Barcelona

– SPAIN by

Amate Audio S.L.

Perpinyà, 25 · Polígon Industrial Nord · 08226 Terrassa

T. [phone] – F. [phone] –

[e-mail]

R&D and FACTORY:

Violinista Vellsolà, 18 · 08222 Terrassa

T. [phone] – F. [phone]

Barcelona – SPAIN

www.amateaudio.com

© Copyright 2022 by Amate Audio S.L.