American Audio LSM-480 User manual

American Audio LSM Loudspeaker Controller User Manual
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LSM-480
USER MANUAL
A.D.J. S UPPLY E UROPE B.V.
Junostraat 2
6468 EW Kerkrade
The Netherlands
www.americanaudio.eu

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Table of Contents
Table of Contents ................................................................ 3
1.0 Introduction ....................................................................4
2.0 Features ..........................................................................5
3.0 Front Panel Functions ...................................................6
4.0 Rear Panel Functions .................................................... 9
5.0 Powering Up the Device .............................................. 10
6.0 Operating the Device ..............................................…11
6.1 Input/Output menus.......................................................... 11
6.2 System Menus...............................................................13
7.0 QuickReference.............................................................18
8.0 PC Control Software ................................................... 19
9.0 Specifications................................................................20

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1.0 Introduction
The LSM series is a digital loudspeaker management system designed for
the touring or fixed sound installation markets. The absolute latest in
available technology is utilized with 32-bit (40-bit floating point ) processors
and high performance 24-bit Analog 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,
delay, polarity, 6 bands of parametric EQ per channel, multiple crossover
selections and full function limiters. Precise frequency control is achieved
with its 1 Hz resolution. Inputs and outputs can be routed in multiple
configurations to meet any requirement. The LSM series can be controlled
or configured in real time on the front panel or with the intuitive PC GUI
accessed via the USB or RS485. 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:
- LSM- unit
- LSM Drive CD (incl. User Manual & PC Software)

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2.0 Features
32-bit DSP (Highly accurate digital processing)
High Performance 24-bit A/D and D/A Converters
Accurate 1 Hz Frequency Resolution.
6-Band Parametric Equalizers for each Input and Output
Full-Function Limiters on Output Channels
One Touch” easy access setup button
Backlit 4-Line x 32 Character LCD Display
Full 5-segment LEDs on every Input and Output
Storage up to 30 Program Setups
USB and RS-485 interfaces for PC Control and Configuration
Pink noise and single frequency generator
Original Neutrik XLR connectors
Security Lock

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3.0 Front Panel Functions
1. USB – a standard Type B USB connector. Proper device driver must be
installed prior to usage.The red LED will come on for indication will USB
cable connected
2. Mute keys – Mute/Unmute input and output channels. When an input
channel is muted, a red LED will come on for indication.
When Menu Control key is pressed, it selects the corresponding
channel for the LCD menu display which is acknowledged by a green LED
above the button’s. The last modified menu will be displayed on the LCD.
While the Menu Control key is hold down, multiple channels can be
linked or unlinked by pushing the desired channels. This eases
programming the same parameters across multiple channels. Multiple
Inputs can be linked together and multiple outputs can be linked
together. Inputs and Outputs are linked separately.
3. Peak Level LED - Indicates the current peak level of the Signal:
Signal, -12dB, -6dB, -3dB, Over/Limit. The Input Over LED references to
the device's maximum headroom. The Output Limit LED references to
the threshold of the limiter.
4. Menu keys - There are 8 menu keys for Signal-Gain/Phase/Delay, EQ,
X’over (Crossover), Limiter, Channel (Input Mix), Name (Channel name) for
each input/output channel and System and Exit control for main system.
1
2
3
5
4
6
7

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5. Rotary Thumb Wheel - Changes data values of a parameter and
confirms the change. The wheel has travel velocity sensing which eases
large incremental data modifications. While modifying delay and frequency
(1 Hz resolution), pressing the Speed key simultaneously will
increment/decrement the data value by 100X. To confirm the setting push
the wheel one time.
6. LCD – 4 line x 32 words to show all the information necessary to control
the unit.
7. Cursor control- 4 keys for Cursor control.

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4.0 Rear Panel Functions
1. Main Power - Connected via a standard IEC socket. A compatible power
cord is supplied with the unit. The voltage input is 90-240VAC, 50-60Hz.
2. Main Fuse - T2.5A-250V. Slow blow type.
3. Power switch - Controls power On/Off.
4. RS485 – Enables remote control of the device up to 1000M..
5. 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 -.
5 Output
4
2
1
3
5 Input

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5.0 Powering Up the Device
• After powering up the unit, the following initialization screen is displayed
on the LCD:
• The initialization process takes about 8 seconds and during that period
the unit boots and displays the device model and firmware version.
• After the initialization process is finished the LSM displays its main screen:
• The screen shows the current program number and program name
assigned to the unit. If the 2 fields are empty, it means that no program
is assigned, the last data before previous power down is recalled instead.
• Now the LSM is ready to operate.
** LSM Series **
LSM-480 v1.00
DEVICE : 1
PROG (U):1
(U)> User program (F) factory program

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6.0 Operating the Device
Tips: Channel Linking – While holding down the Mute button for 2 Seconds
more than 1 channel from the same group (Input or Output group) can be
selected to link the channels together. The green LEDs above the Mute
buttons are lit for the linked channels. Any modification of the data for the
selected channel will be applied to the linked channels as well. To cancel
the linking, simply deselect the desired channel when the Mute key is
still pressed.
6.1 Input/Output menus
Each of LSM input channels has a separate Mute key. Hold down the Mute
key for 2 seconds then the Channel menu can be used and the green LEDs
above the Mute button are lit.
One Touch easy access setup button
LSM Drive have 8 one touch setup buttons enabling the user to control the
Signal, EQ, X over, Limiter, Channel, Name for each input/output, and
System and Exit button in an easy and direct way.
-Signal-Gain/Phase/Delay - Signal parameters
• LEVEL - Gain, -40.00dB to +12.00dB in 0.1dB steps.
• POL - Polarity, can be normal (+) or inverted (-).
• DELAY - Delay in 21µs steps. Can be displayed in ms, ft or m. The
time of the unit delay can be changed in the System menu. The
maximum delay permitted is 1000ms.
OUI_1:XXXXXX MENU:Signal
LEVEL:0.00dB
POL :+
DELAY :0.105ms

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-EQ - EQ parameters
• EQ# - Selects one of the 6 available Equalizers.
• LEVEL - EQ level gain. Ranges from -30.00dB to +15.00dB in
0.1dB steps.
• FREQ - EQ center frequency. Ranges from 20 to 20,000Hz in either
1Hz steps or 1/36 octave steps
• BW - EQ Bandwidth. Ranges from 0.05 to 3.00 octaves in steps of 0.01
octave steps for PEQ. The Q value is automatically shown beneath the
octave value. For Lo-Sht or Hi-Shf, it is either 6 or 12dB/Oct.
Type - Type of EQ. The types can be parametric (PEQ), Lo-shelf
(Lo-shf) and Hi-shelf (Hi-shf).
.
OUT_1:xxxxxx MENU: EQ
EQ#:EQ1 BW:0.50OCT
LEVEL:0.00dB Q=28.85
FREQ : 1000HZ TYPE:PEQ
-X Over - Crossover Parameters
• FTRH - Filter Type of low frequency crossover point (high pass).
Types can be Butterworth, Linkritz Riley or Bessel.
• FRQH - Filter cut-off Frequency of low frequency crossover point
(high pass). Ranges from 20 to 20,000Hz in either 1Hz steps or
1/36 octave steps. The frequency steps can be selected in the
• SLPH - Filter Slope of low frequency crossover point (high pass).
Ranges from 12 to 48dB/octave. If the selected Filter Type is
Linkritz Riley, the available slopes are 12 / 18 / 24 / 48 dB/octave.
• FTRL - Filter Type of high frequency crossover point (low pass).
• FRQL - Filter cut-off Frequency of high frequency crossover point
(low pass)
• SLPL - Filter Slope of low frequency crossover point (high pass).
Ranges from 12 to 48dB/octave. If the selected Filter Type is
Linkritz Riley, the available slopes are 12 / 18 / 24 / 48 dB/octave.

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OUT_1:XXXXXX MENU:X-Over
FTRH: Butwrth FTRL: Butwrth
FRQH: 1000Hz FRQL:1000Hz
SLPH: 24dB SLPL:24dB
-Limiter - Output Limiter
• THRESH - Limit Threshold. Ranges from -20 to +20dBu in 0.5dB
steps.
• ATTACK - Attack time. Ranges from 0.3 to 100ms in 0.1ms steps,
then ranges from 1 to 100ms in 1ms steps.
• RELEASE - Release time. Can be set at 2X, 4X, 8X, 16X or 32X
the attack time.
OUT_1:XXXXXX MENU:Limiter
THRESH:+20.0dB
ATTACK:10ms
RELEASE:2X (20ms)
-Channel - Input Mixer
• 1,2,3,4– Input channel source for the current output channel. Can
be used to mix the input source or disable it (Off). If more than one
input sources are enabled, they will be added together as the
source for the current output channel.
OUT 1 : MENU:Source
InA:ON
InB:ON
InC:OFF
InD:OFF
Name - Channel Name
• Name - Channel name. 6 characters in length.
OUT 1:XXXXXX MENU:Name
NAME:XXXXXX
6.2 System Menus
The System Menus allow the user to control and change parameters that
are related to the system behavior and general operation. It can be
accessed by pressing the System one touch key

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SYSTEM MENU
*Load a Xover
Store a Xover
Erase a Xover
System Set
Signal Generate
-Load a Xover - Program Recall
The LSM has a built in non-volatile memory that can store up to 30 different
program setups. A program can be recalled by using this menu.
Load a Xover
*User Mode
Factory Mode
Load a Xover: User Mode
*1
2
3…
• PROG - Program Number to be recalled.
-Store a Xover - Program store
The LSM has a built in non-volatile memory that can store up to 30 different
program setups. A program can be stored by 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.
Store a Xover
*1
2
3…
• PROG - Program Number for the current data to be stored.
Erase a Xover
Erase a Xover
*1
2

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3…
-SYSTEM Set
SYSTEM MENU
*Password
Bac Light Set
Delay Unit
Device ID
Systen info
*Password- The password of the LSM is 6 characters in length.
SYSTEM SETUP MENU: Password
*------*
*0 *
*------*
Bac Light Set
SYSTEM SETUP MENU: Time
Light on / 20 s
The LCD display can be set to be always on or switch off after 20 Second.
Delay ID
SYSTEM SETUP MENU: Delay
DELAY UNIT: ms /cm / ft
Set the Delay unit in ms or cm or ft
Device ID
SYSTEM SETUP MENU: Device
DEVICE ID: 1

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Set the Device ID from 1 to 250
System Info
Version: V1.0.1
Copy Right :
Created by:
Created Date: 2008-08-18
-Signal Generate
*Normal
Pin Noise
Tones ( XXXX Hz)
Normal- Normal mode
Pin Noise-Pin Noise Generate mode
Tones- Tones mode, you can select any frequency from 20Hz to 20 Hz.
• NAME - Program Name, allows a maximum length of 15 characters.
SYSTEM Recall
P:1 XXXXXXXXXXXX
SYSTEM Store
P:1
SYSTEM Store
NAM:XXXXXXXXXXXX
Security - Security Lock
The LSM enables the user to secure the unit and prevent undesired
changes in the setup. In order to lock/unlock the unit the user must enter the
correct password.
• PASSWORD – Under the System Menu
The password of the LSM is 6 characters in length. The user can change it
via the PC application software. The factory default of a new unit does not
require a password.
*Password
SYSTEM SETUP MENU: Password

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*------*
*0 *
*------*

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7.0 Quick Reference
Parameter
s
Menu
<<Menu>>
Field
<<Cursor>>
Min
Max
Steps
Units
Level Signal LEVEL -40 +15 0,1 dB
Polarity Signal POL + / -
Delay Signal DELAY 0 1000 1
21µs
EQ Number EQ EQ# 1 6 1
EQ Level EQ LEVEL -30 +15 0.1 dB
EQ Frequency EQ FREQ 20 20.000 1 Hz
EQ Bandwidth EQ BW 0.05 3 0.01 Octave
Crossover low XOver FTRH Off / Butterworth / Linkwitz-Riley / Bessel
Crossover low XOver FRQH 20 20.000 1 Hz
Crossover low XOver SLPH 12/18/24/48 Octave
Crossover High XOver FTRL Off / Butterworth / Linkwitz-Riley / Bessel
Crossover High XOver FRQL 20 20.000 1 Hz
Crossover High XOver SLPL 12/18/24/48 Octave
Out limiter thresh Limit THRESH -20 +20 0.1 dB
Out attack time Limit ATTACK 0.3 100 0.1 / 1 ms
Out release time Limit RELEASE 2 / 4 / 8 / 16 / 32X Attack time
Source Source 1, 2, 3, 4 Off / On
Channel name Ch-Name NAME 6 characters

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8.0 PC Control Software
The LSM series is shipped with a special PC Control Software - LSM Drive
gives the user an option to control the unit from a remote PC via the USB or
RS485 serial communication link. The software 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 PC’s hard drive,
The LCD will display below when PC software are connected

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9.0 Specifications
Inputs and Outputs
Input Impedance: >10k Ohms
Output Impedance: 50 Ohms
Maximum Level: +20dBu
Type: Electronically balanced
Audio Performance
Frequency Response: +/- 0.1dB (20 to 20 kHz)
Dynamic Range: 115dB type (unweighted)
CMMR: > 60dB (50 to 10 kHz)
Crosstalk: < -100dB
Distortion: 0.002% (1 kHz @+4dBu)
Digital Audio Performance
Processor: 32-bit
Sampling Rate: 96 kHz
Analog Converters: High Performance 24-bit
Propagation Delay: 1.5ms
Front Panel Controls
Display: 4 x 32 Character Backlit LCD
Level Meters: 5 segment LED
Buttons: Mute/Edit Controls
Menu Controls
Dial Encoder: Embedded Thumb Wheel
Connectors
Audio: 3-pin XLR
RS-485 X 2
USB: Type B
Power: Standard IEC Socket
General
Power: 90-120 or 200-240 VAC (50-60Hz)
Dimensions: 19”x1.75”x9” (483x44x229 mm)
Weight: 7lbs / 3.2kg