Applied Research and Technology SMS226 Bedienungsanleitung

SMS226

Automated Speaker Management System

USER’S GUIDE

IMPORTANT SAFETY INSTRUCTIONS –READ FIRST

This symbol, wherever it appears, This symbol, wherever it appears, alerts

alerts you to the presence of uninsulated you to important operating and maintenance

dangerous voltage inside the enclosure. Voltage instructions in the accompanying literature.

that may be sufficient to constitute a risk of shock. Please read manual.

Read instructions:

Retain these safety and operating instructions for future reference. Heed all warnings printed here and on the equipment.

Follow the operating instructions printed in this user guide.

Do not open:

There are no user serviceable parts inside. Refer any service work to qualified technical personnel only.

Power sources:

Only connect the unit to mains power of the type marked on the rear panel. The power source must provide a good

ground connection.

Power cord:

Use the power cord with sealed mains plug appropriate for your local mains supply as provided with the equipment. If the

provided plug does not fit into your outlet consult your service agent. Route the power cord so that it is not likely to be

walked on, stretched or pinched by items placed upon or against.

Grounding:

Do not defeat the grounding and polarization means of the power cord plug. Do not remove or tamper with the ground

connection on the power cord.

Ventilation:

Do not obstruct the ventilation slots or position the unit where the air required for ventilation is impeded. If the unit is to be

operated in a rack, case or other furniture, ensure that it is constructed to allow adequate ventilation.

Moisture:

To reduce the risk of fire or electrical shock do not expose the unit to rain, moisture or use in damp or wet conditions. Do

not place a container of liquid on it, which may spill into any openings.

Heat:

Do not locate the unit in a place close to excessive heat or direct sunlight, as this could be a fire hazard. Locate the unit

away from any equipment, which produces heat such as: power supplies, power amplifiers and heaters.

Environment:

Protect from excessive dirt, dust, heat, and vibration when operating and storing. Avoid tobacco ash, drink spillage and

smoke, especially that associated with smoke machines.

Handling:

To prevent damage to the controls and cosmetics avoid rough handling and excessive vibration. Protect the controls from

damage during transit. Use adequate padding if you need to ship the unit. To avoid injury to yourself or damage to the

equipment take care when lifting, moving or carrying the unit.

Servicing:

Switch off the equipment and unplug the power cord immediately if it is exposed to moisture, spilled liquid, objects fallen

into opening, or the power cord or plug becomes damaged during a lightning storm or if smoke odor or noise is noted.

Refer servicing to qualified technical personnel only.

Installation:

Install the unit in accordance with the instructions printed in the user guide.

III

SMS226

Speaker Management System

IMPORTANT SAFETY INSTRUCTIONS –READ FIRST ....................................................................................II

INTRODUCTION ............................................................................................................................................... 1

SMS226 features...............................................................................................................................................................................................2

INSTALLATION................................................................................................................................................. 3

AC Power Hookup.............................................................................................................................................................................................3

Analog Audio Connections.................................................................................................................................................................................3

USB connection.................................................................................................................................................................................................3

BASIC OPERATION .......................................................................................................................................... 4

User interface controls.......................................................................................................................................................................................4

LED meters and mute switches.........................................................................................................................................................................4

Graphics LCD....................................................................................................................................................................................................4

Configuration Wizards ..................................................................................................................................... 5

Auto-setup button ..............................................................................................................................................................................................5

Auto-EQ button..................................................................................................................................................................................................5

Auto-Feedback button .......................................................................................................................................................................................6

SYSTEM FUNCTIONS....................................................................................................................................... 7

STORE button ...................................................................................................................................................................................................7

RECALL button..................................................................................................................................................................................................8

UTILITY button ..................................................................................................................................................................................................8

Input menu.........................................................................................................................................................................................................8

System menu.....................................................................................................................................................................................................9

Security menu..................................................................................................................................................................................................10

INPUT MODULE DESCRIPTIONS ................................................................................................................... 11

General settings...............................................................................................................................................................................................11

Compressor button..........................................................................................................................................................................................11

Graphic EQ button...........................................................................................................................................................................................11

Noise Gate button............................................................................................................................................................................................11

Sub-synth button..............................................................................................................................................................................................11

Feedback button..............................................................................................................................................................................................11

OUTPUT MODULE DESCRIPTIONS................................................................................................................ 13

Output button...................................................................................................................................................................................................13

Crossover button .............................................................................................................................................................................................13

Parametric EQ button ......................................................................................................................................................................................13

Delay button ....................................................................................................................................................................................................13

Limiter button...................................................................................................................................................................................................13

PC INTERFACE ............................................................................................................................................... 15

Overview..........................................................................................................................................................................................................15

Installation .......................................................................................................................................................................................................15

USB Connection..............................................................................................................................................................................................16

Operation.........................................................................................................................................................................................................17

WARRANTY INFORMATION ........................................................................................................................... 20

SERVICE: ........................................................................................................................................................ 21

SPECIFICATIONS ........................................................................................................................................... 22

LIST OF FIGURES

FIGURE 1 –Rear panel.......................................................................................................................................................... 3

FIGURE 2 –Signal Flow Block Diagram ................................................................................................................................ 7

FIGURE 3 - Device manager COM4 port usage example....................................................................................................16

FIGURE 4 - PC Overview screen..........................................................................................................................................17

FIGURE 5 - PC Inputs screen...............................................................................................................................................18

FIGURE 6 - PC Outputs screen............................................................................................................................................19

INTRODUCTION

The ART SMS226 is a two input, six output speaker management system with a number of advanced

functions and easy setup. The unit combines mono or stereo processing, a flexible crossover with speaker

protection and an automated setup facility. A graphic LCD display and LED meters allow control and

monitoring of the SMS226.

The speaker processor architecture is comprised of mono/stereo linkable processing modules on the two

inputs and mono processing blocks that apply to each output. Possible configurations are 2x2, 2x2 +sub, 2x3,

1x4, 1x5 and 1x6.

Input processing blocks include 1/3 octave graphic EQ, RMS compressor, noise gate, phase, feedback

suppression and sub-harmonic generator.

Output processing blocks include crossover filters, delay, parametric EQ, Limiter, level and phase control.

The Graphic EQ can be set up by an Auto-EQ function utilizing the measurement mic that comes with the unit.

The output processing blocks can be set up by the auto-configuration function, where the user selects

components from various manufacturers. Output Limiters can be linked in pairs for keeping stereo balance or

all tied together to additionally maintain the spectral balance.

The unit is controlled by a front panel interface that includes a graphic LCD, an array of mute switches located

under the LED meters for each input and output, an encoder knob and an array of switches.

The switch array allows the user access to all of the processing blocks directly. The encoder selects between

parameters and values through an integral switch. The LCD display shows parameter name and value

information plus a graphical representation of the value change.

Over 200 speakers and amplifiers are recallable from the setup wizard. Multiple custom speakers or entire

setups can be stored and recalled. When the system setup is complete, you can run an Auto-EQ function to

tweak the system using an external mic.

A PC-supported USB interface allows even quicker access to all of the functions of the device as well as

providing a backup storage mechanism. Factory presets can be updated through this interface insuring that

you have the latest fine tuned speaker crossover and amplifier data.

SMS226 features

2 inputs, 6 outputs plus a measurement mic input

Configurable for 2x2, 2x3, 2x2+1, 1x4, 1x5 and 1x6

Simple user interface supported with Graphics LCD, encoder and quick access menu buttons

Three setup wizards (Auto-feedback, Auto-EQ, System configuration)

Over 200 different factory speaker presets plus 20 user customizable speaker presets

200 different factory amplifier presets plus 10 user customizable amplifier presets

Store or recall up to 30 entire system presets

Dual/stereo 1/3 octave graphic EQ, Compressor, and Gate on inputs

Auto-EQ wizard works with optional external measurement mic

Dual/stereo sub-harmonic synthesizer

Dual/stereo feedback eliminator with adjustable fixed and active filters

Selectable phase on all inputs and outputs

Output limiters linkable for stereo or spectrum preservation

3 band fully Parametric EQ on all outputs

Up to 24dB/Octave crossover slopes ( Linkwitz-Reiley, Butterworth, Bessel)

Front panel mute switches on all inputs and outputs

Selectable level/attenuation meters on all inputs and outputs

Delays adjustable in either mSec or Feet.

Up to 500mSec (556 ft.) delays on each output adjustable for driver alignment to cluster delay

Input delays up to 600 mSec (660 ft.) for cluster alignment

Security lock with one million combinations.

USB interface to PC for graphical interface support

Firmware updateable over PC interface

Preset storage to/from PC

Universal power supply (90VAC to 240 VAC 50-60Hz)

Single high rack mount chassis.

INSTALLATION

The ART SMS226 may be used in a wide variety of applications and environments. Housed in a rack-

mountable, all-steel enclosure, the unit is designed for continuous professional use. Mounting location is not

critical, however, for greater performance reliability, we recommend that you not place the unit directly on top

of power amps, or other sources of heat and/or strong magnetic fields

AC Power Hookup

The ART SMS226 has a high efficiency universal power supply. Connect the unit to mains power of the type

marked on the rear panel. The power source must provide a good ground connection, and the ground pin on

the mains plug should never be defeated.

Set the ground Lift switch to GND to start for safe system operation. If you find this selection creates a ground

loop in your system, you can place the switch in the LIFT position.

Analog Audio Connections

Audio connections to and from the SMS226 are all balanced with the following wiring:

Rear panel balanced inputs: [XLR] Pin 2 = Hot (+), Pin 3 = Cold (-), Pin 1 = Ground

Rear panel balanced outputs: [XLR] Pin 2 = Hot (+), Pin 3 = Cold (-), Pin 1 = Ground

Front panel balanced input: [XLR] Use the Apex 220 measurement microphone only.

FIGURE 1 –Rear panel

Note: When connecting the outputs to your system, the SMS226 will default to using odd numbered output

channels for the "A" input and even numbered channels for the "B" input. It will also default to using CH1 for a

woofer and CH3 for a tweeter. If you have chosen 2x2+1 mode, CH5 and CH6 are used for the sub-woofer

connection.

You can override any of these settings manually.

USB connection

The USB connection allows access to the SMS226 using a PC. System and user preset info can be saved

and restored or all of the parameters can be adjusted from the PC instead of using the front panel interface.

Note that the front panel interface is disabled when using the USB interface.

BASIC OPERATION

User interface controls

The SMS226 is controlled from the front panel by a rotary encoder and a number of switches. The switches

allow quick access to various functions. Pushing (also referred to as "clicking") the encoder knob will generally

switch between a value or a parameter adjustment. Rotating the encoder knob will adjust the value or

parameter.

When you are in the default screen mode, the encoder can act as a master volume control. Refer to the

UTILITY button to see how to set this up.

Note that when editing text, pushing the encoder moves the cursor to the character to the right until all of the

available characters have been addressed. Since you cannot go backwards, simply repeat the process to

modify characters you missed the first time.

In case you get in trouble or lost, hitting any of the front panel menu keys TWICE will return you to the

starting screen (also referred to as the "default" screen).

LED meters and mute switches

The meters can display either Level or Attenuation. Level is measured at either the input jacks (for the first

two meters) or the output jacks (the last six meters).

When set to Atten mode, the Input A/ Input B meters switch to displaying the attenuation of the Compressor.

The Output 1- Output 6 meters display the Limiter attenuation in Atten mode.

The switches located below the meters mute the inputs or outputs when pushed. The adjacent red LED

indicates a muted channel when lit.

Graphics LCD

The LCD shows the SMS226's current state and relevant data. The default screen displays the unit's

configuration graphically. Parameters that relate to frequency response changes will display parameter settings

in both text and graphical form.

Configuration Wizards

Auto-setup button

The Auto-Setup function will help you configure your system and then run the Auto-EQ and Auto-Feedback

wizards.

MODE parameter

The SETUP Wizard starts with configuring the Inputs and outputs. You can choose mono or stereo input

operation and the number of outputs used. i.e. 2x3 means stereo input with a three way crossover using all 6

outputs. Setting the mode to 1x4 configures the unit as a mono input ("A") with 4 outputs. After this step, click

on the Next parameter to advance to the next menu item.

Out 1...Out 6 parameters

The next step is to choose the stored speaker data to use for each output. Stereo operation will group the

outputs into even and odd pairs (1&2, 3&4 etc).

Note: If you choose 2x2+1 mode, the Auto-setup wizard assumes that OUT5 will be used for the mono

subwoofer output

Note: When using a sub-woofer you will have to adjust the High Pass filter frequency and slope of the low

frequency speaker to match the upper cutoff frequency of the sub-woofer.

As each speaker is assigned, it is followed up by assigning a Power Amp to the same output. After the power

amps are assigned, you can re-name each output using up to 6 characters. Once you have completed the first

output the process repeats for the next output until all are completed.

The unit is not actually configured until you hit Next when prompted. Since this takes some time to complete,

a "Loading Please Wait" message appears in the LCD display while the unit works to retrieve the info.

When the SMS226 is fully configured, you have the option of running the Auto-EQ wizard by clicking on the

Next parameter, or Exiting.

Auto-EQ button

The Auto-EQ function of the SMS226 requires an APEX 220 instrumentation mic plugged into the

front panel XLR jack.

The unit generates pink noise and sends this to all of the outputs. The external mic allows the unit to

measure the response of the system and to make corrections using the internal 1/3 octave EQ. This process is

automatically repeated a number of times to obtain the best results.

Push Auto-EQ to start. Note that every sub-menu now offers the Exit function. Exit will return you to the

Configuration screen with no changes to the EQ.

Push the encoder knob to adjust the Set EQ flat or rotate to Setup, Run, or Exit. Push the encoder knob to

proceed.

Setup will allow adjustment of how the Auto-EQ operates. Most of the parameters have suitable defaults and

you should not have to modify them. You should at least review the low band limit and set it to the low

frequency cutoff of your system.

You can set the number of times to repeat the process (Default = 10), the Precision, the Target curve (adjust

each of the 31bands + 4dB), the extreme bands to limit the process

, and the Mode (the averaging can be set

to either absolute or mean).

If this is a problem, you can manually configure the unit using the output function switch.

After the parameters are set, select Next and push the encoder to proceed to the initial menu.

Selecting Run from the initial screen will drop you to the Level adjustment menu. The Back function is now

available in subsequent sub-menus. This will allow you to return to previous menus to make adjustments.

Push the encoder and adjust the level. This is for mic sensitivity and the default is set to the minimum value.

Increase it until you see some reflection of the pink noise from your system in the measurement mic. Next,

push the encoder and then rotate to Exit, Back or Run and push the encoder to proceed.

Selecting Run changes the LCD to display the adjusted EQ settings. As this process runs, you can hear the

EQ changes between each pass until the process is complete. When complete, rotate the encoder to select

Exit, Repeat or Load.

Selecting Exit will leave the EQ as it was before the process started.

Selecting Repeat will return you to the initial Auto-EQ menu with the EQ settings remaining from the previous

pass.

Selecting Load will save the EQ results, completing the Auto-EQ wizard and starting the Auto-Feedback

wizard.

Auto-Feedback button

After running the Auto-EQ function, the Feedback eliminator can be used to kill feedback in live situations. The

Feedback Eliminator monitors the incoming audio (IN A and IN B) for fixed tones and applies a notch filter.

You can set the number of "fixed" notches, the type of audio expected through the system (Speech, Low, Mid

or High Music), how long to hold an "active" (or non-fixed) notch and enable/disable the active system. Once

all of parameters are set, the system is updated and acts accordingly.

Active vs. Fixed notches

The number of fixed notches refers to filters that once set by the Auto-feedback system cannot time-out. You

set the number of fixed notches depending on the system's characteristics that do not change (i.e. a peak in a

speaker's response that is always there). You will not need more than a few fixed filters. The default setting is

Active filters act to prevent feedback in case of a change in mic, environment or system gain. These are the

most flexible filters as they will be applied as needed and can be reset over time. Active filters can be set to

reset or "lift" from 5 sec to 60 minutes (or "OFF" in which they act more like a fixed filter after the first time they

are required).

Using the Auto-feedback function

Before you activate the auto feedback function you should set the system gain levels with all of the mics on to

have a small amount of feedback. Once the system has tuned out the feedback, decrease the system levels a

couple of dB to ensure the best performance. The remaining active filters will act to prevent feedback.

Once the system is in use, you can use the Feedback button to tweak the parameters of the Auto-feedback

system as well as reset the active filters (Clear Lift parameter) or all of the filters (Clear All parameter).

. (These parameters are very useful. Your system may not pass frequencies below 40 Hz, so there is no reason to Auto-

EQ bands below this cutoff as the boosted bands simply overload the speakers in the most inefficient portion of their

range.)

FIGURE 2 –Signal Flow Block Diagram

SYSTEM FUNCTIONS

STORE button

The Store function consists of setting the destination and name of the preset and additionally the source if the

Type is set to Speaker or Power Amp. You can store up to 20 System presets (numbered 11 to 30) or 20 User

Speaker or Power Amp presets (numbered 201 to 220).

Note that the lower numbered presets are Factory presets and cannot be overridden.

Exit

Clicking on the Exit parameter will return the unit to the main Store screen. If you want to return to the default

screen simply hit the Store button again.

Type

The Store function allows you to save a System snapshot (default), a Speaker or a Power Amp preset. The

Type parameter selects the variant to be stored.

Confirm

After setting Type, clicking the Confirm parameter reveals another menu to adjust the destination and preset

name. If you have chosen to store a Speaker or Power Amp preset an additional parameter (SRC) allows you

to select the output channel used as a reference for the Speaker or Power Amp settings.

Editing the Name parameter is a little unique as after pushing the encoder to edit the first character you

simply push the encoder again to access the next character until the curser returns to the Name parameter.

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