Trinnov Audio ST2-HIFI User Manual
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Trinnov Audio ST2-HIFI User Manual

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ST2-HIFI
USER GUIDE
V. 3.8
High Perform nce Digit l Acoustics,
since 2003.

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  • Page 1 ST2-HIFI USER GUIDE V. 3.8 High Perform nce Digit l Acoustics, since 2003.
  • Page 2 Light version...

  • Page 3: Table Of Contents

    6.7 TARGET CURVE / LIMITER CURVES GETTING STARTED 6.8 ABOUT LATENCY 3.1 POWERING ON THE ST2-HIFI 3.2 REMOTE ACCESS TO THE GRAPHICAL USER INTERFACE (GUI) 3.3 USING THE ST2 HIFI AS A WIFI ACCESS POINT 3.4 USING THE ST2 HIFI AS A DHCP CLIENT 3.5 REMOTE ACCESS FROM A TABLET, LAPTOP OR SMARTPHONE...
  • Page 4 Trinnov is a registered trademark of Trinnov Audio. ©2003-2014 Trinnov Audio - All rights reserved. Windows is a registered trademark of Microsoft Corporation in the United States and other countries. Apple, iPad, iPhone and iPod Touch and iMac are trademarks of Apple Inc., registered in the U.S. and other countries.
  • Page 6 PLUG FROM THE AC RECEPTACLE. 2. Follow all warning and instructions. 8. Install in conformance with the manufacturer's instruc- tions. 3. TRINNOV Audio expressly forbids unauthorized modifi- cation of this equipment. 9. Maximum permissible operating conditions: 0°C to 40°C, 20-65% relative humidity.

  • Page 7: What's In Your Box

    THE ST2-HIFI 1 TRINNOV 3D MICROPHONE (optional) 1 POWER CABLE...

  • Page 8: Concept

    The weakest element of any high-fidelity system is the room. Typical rooms introduce up to 10dB of distortion in the frequency response. Furthermore, loudspeakers with a perfect impulse response don’t exist. Trinnov’s ST2-HiFi solves the acoustic equation. It takes your high-end system to a whole new level of accuracy, from high-fidelity to acoustic-fidelity.

  • Page 9: The Rear Panel

    THE REAR PANEL Power section Audio section 1 IN & 1 OUT 2 STEREO ANALOG 2 STEREO ANALOG POWER M15A POWER SERIAL AES/EBU SINGLE-ENDED IN BALANCED IN (XLR) (RCA) (XLR) SOCKET FUSE SWITCH NUMBER PARALLEL PORT DVI PORT VGA PORT PS2 FOR MOUSE ETHERNET OR KEYBOARD...

  • Page 10: Measurement Microphone

    THE TRINNOV 3D MEASUREMENT MICROPHONE front The measurement microphone is one of the most critical component in the Trinnov calibration procedure. The c libr tion microphone nd the rr ngement The Optimizer’s sophisticated algorithms not only rely on very accurate acoustic of the c psules measurements but also on the ability to localize speakers positions and to detect early reflection origin.

  • Page 12: Typical Connections

    TYPICAL CONNECTIONS Series Connection Insertion Loop SOURCES PREAMP ST2-HIFI ST2-HIFI POWER AMPS POWER AMPS The ST2 HiFi seamlessly integrates your hifi installation. Whether your system allows for series connection and/or insertion loop, both analog and digital inputs/outputs of the ST2 HiFi can be used.

  • Page 13: Connecting A Source

    CONNECTING A SOURCE PLAYER Connecting CD Pl yer to the AES Input 1 The ST2 HiFi allows you to connect and play any stereo source without any configuration. This example shows how to connect the AES output from a CD player to the ST2 HiFi.

  • Page 14: Connecting Speakers

    CONNECTING SPEAKERS Def ult output connectors for stereo system This image shows the outputs that should be used as default stereo system output. Please remind that these outputs play simultaneously. STEREO POWER AMPLIFIER Stereo System connection ex mple...

  • Page 15: Connecting The Microphone

    CONNECTING THE MICROPHONE The Trinnov 3D measurement microphone must be connected to the balanced analog inputs of the ST2 HiFi. • Always make sure the microphone is turned off before you connect it to the ST2 HiFi. • The microphone cables are labelled and numbered from 1 to 4. •...

  • Page 18: Powering On The St2-Hifi

    POWERING ON THE ST2 HIFI It is not recommended to cut the AC Power, NOTE Don't forget that the amplifier IMPORTANT NOTE as the system saves several “last-used” settings should always be powered up last. while shutting-down. Turn on the main power switch on the rear panel to supply the ST2 HiFi To shut the ST2 HiFi down, press the front panel power button once.

  • Page 19: Remote Access To The Graphical User Interface (Gui)

    REMOTE ACCESS TO THE GRAPHICAL USER INTERFACE (GUI) The ST2 HiFi has built-in Ethernet and optional WiFi. The ST2 HiFi allows several options for remote control: It can simultaneously be part of a network as: • Remote control from a tablet, laptop or smartphone over the network, •...
  • Page 20 ST2 HIFI USING THE AS A WIFI ACCESS POINT Provided that the optional WiFi dongle has been inserted into one of the USB port of the ST2 HiFi before ignition, a dedicated WiFi Access point should appear in the WiFi Networks list of your tablet/smartphone/computer under the name "ST2-xx"...
  • Page 21 ST2 HiFi as Access Point ST2 HIFI. This is the default configuration of the This figure shows that: • The ST2 HiFi creates its own WiFi network. • The ST2 HiFi Access Point and the Home Network are two separated networks. •...

  • Page 22: Using The St2 Hifi As A Dhcp Client

    • The network parameters of the ST2 HIFI can also be set includes an active DHCP server. should allow the ST2 HiFi to reach Trinnov Audio's Server manually in the Settings/Network page of the Graphical for software updates through Internet.

  • Page 23: Remote Access From A Tablet, Laptop Or Smartphone

    REMOTE ACCESS FROM A TABLET, LAPTOP OR SMARTPHONE The ST2 HiFi has a built-in VNC Server that enables full remote control from any VNC client host device over the network. VNC control from Windows® 3.5.1 About VNC VNC is a graphical desktop sharing system that transmit the keyboard and mouse events from one computer (server) to another (client), relaying the graphical screen updates back in the other direction, over a network.
  • Page 24 3.5.2 VNC Connection First install the VNC client application on the device you want to control the ST2 HiFi from. Make sure this device is connected to the same network (either wired or wireless network). The VNC Client will ask you: the server address (or host depending on the application) + a display port + a password. "TightVNC"...
  • Page 25 Server Adress IP addresses can be retrieved from the graphical interface in the Setup/Network page: The server address is the IP address of the ST2 HIFI: • The Ethernet IP address if the ST2 HIFI is hardwired to the local network. •...

  • Page 26: Connecting The St2 Hifi To An Existing Wifi Network

    CONNECTING THE ST2 HIFI TO AN EXISTING WIFI NETWORK 3.6.1 Introduction Unlike using the ST2 HIFI as an Access Point or DHCP client, connecting the device to a home network as a wifi client requires some configuration. This is the most flexible and confortable network configuration since it allows both controlling the ST2 HIFI and browsing internet from a smartphone or tablet, without any cables.
  • Page 27 3.6.2 Configuration of the client 1. In the Settings/Network page, hit the Setup... button to display the wifi configu- ration page. 2. Select the required WiFi mode (FULL is the default mode but only works as an Access Point until the WiFi client is configured). 3.

  • Page 30: Overview

    OVERVIEW You can access to the Advanced preamplifier settings of the ST2 HiFi on the home page by pressing the button. Setting...
  • Page 31 Rename, save, copy or delete presets Access the Optimizer step-by-step calibration wizard Setup the synchronization mode of the ST2 HIFI Manage the ST2 HIFI network connectivity Name and organize inputs Configure the power-on default parameters Unleashed the full power of the Loudspeaker/Room Optimization with the advanced settings menu Back to the Home page...

  • Page 32: Setting Up The Audio Clock

    SETTING UP AUDIO CLOCK Status information frame displays the current and detected sample rate. Its purpose is to indicate whether or not the ST2 HIFI is correctly synchronised. The  Clock mode  frame proposes two modes: Slave & Master. • SLAVE mode: the ST2 HIFI synchronizes itself on an external clock signal emitted by an SPDIF or AES audio signal from a digital transport, or by an external master word clock.

  • Page 33: Inputs Configuration

    INPUTS CONFIGURATION Virtual Keyboard The INPUTS configuration menu allows you to manage up to 6 sources which will be available on the ST2 HIFI's Home page. One vertical tab per input on the left. Input-specific parameters on the right. Unused sources can be hidden from the Home with the Enabled...
  • Page 34 For each input, you can define: • Its name whith the Edit name button, • Its icon on the Home screen: by clicking on the button under the back button, a new page opens where you just have to click on the desired icon and confirm your choice by pressing Close button, •...

  • Page 35: Presets Management

    PRESETS MANAGEMENT Settings Panel Except the inputs configuration and power-on default settings, all parameters are saved into presets. The ST2 HIFI can store up to 29 user presets. Home Page - Presets list Presets 1-9 page The presets list is available from the Home page.

  • Page 36: Power-On Default Settings

    Presets page consists of four vertical tabs: Presets 1-9: includes the Built-in preset and presets 1 to 9 • POWER-ON DEFAULT SETTINGS • Presets 10-19: includes presets 10 to 19 • Presets 20-29: includes presets 20 to 29 Preset Info.: shows the current preset information •...

  • Page 37: Usb Backup Restore

    USB BACKUP/RESTORE How to use a USB key to save/load presets and to save acoustic reports. You can: • Load or save presets to a USB key. • Save or load profiles (= sources configuration) to a USB key. • Save or load XML parameters to a USB key.

  • Page 38: Channels Settings

    CHANNELS SETTINGS Channels menu, available through the button on the Home page give you access to fine-tuning tools. Channels Meters are also available for every Inputs and Outputs. Inputs You can launch a test noise for each configured channel, for example check if your connections are correctly done and assigned.
  • Page 39 To create an EQ, press the Edit button on the User EQ bar, a new window User EQ Edition will open: Master Gain slider dB Scale Frequency sliders Direct Input Gain values Frequency sliders values Scrollbar Change Channels button Bypass EQ This is a standard 31 bands EQ.
  • Page 40 Once in the Channels page you can save your current EQ by presssing Save ; from this point two choices are offered to you: • You already have a user EQ saved and want to overwrite it with your new •...
  • Page 41 For each Output channel you can: MUTE it with the Mute button INVERSE THE POLARITY with the polarity trigger (the polarity is inversed when the trigger is lighted up) ADJUST THE LEVEL by +/-0.5dB step ADJUST THE DELAY by +/-0.5ms. You can not input a negative delay.

  • Page 45: Overview

    OVERVIEW The ST2 HIFI includes a step-by-step calibration assistant to helps you throughout the calibration process and benefit from the Room/Speaker correction technology Trinnov Optimizer with just a few clicks. Wizard's steps quick reference : Step 4-A Step 1 Step 2 Step 3 Step 4 Step 5...

  • Page 46: Presets Selection Output Connections

    PRESETS SELECTION OUTPUT CONNECTIONS Step 1 - Presets selection Output connections You have 2 choices to make in the wizard's first step: Select a preset range Select your speaker layout: where the filters issued from calibration will be saved. The ST2 HIFI automatically computes 5 presets at the end of the calibration process, so a slot of 2.0 Mono-amp •...
  • Page 47 Using the Wizard templates implies respecting the following speaker connection order: TEMPLATES BALANCED ANALOG OUTPUTS SINGLE ENDED ANALOG OUTPUTS HI/Sub 1 HI/Sub 2 2.0 MONO-AMP /Sub 1 /Sub 2 LEFT RIGHT LEFT RIGHT HI/Sub 1 HI/Sub 2 2.0 BI-AMP /Sub 1 /Sub 2 LEFT LEFT...

  • Page 48: Microphone Setup

    MICROPHONE SETUP Step 2 Microphone Setup The first and most critical step of the Optimization procedure is the measurement (or calibration), which first relies on a correct microphone placement. 1 . During the calibration procedure, the microphone should be screwed on a microphone or camera stand. red LED must be pointed to the front 2.
  • Page 49 In this very straightfoward step, you just have to choose the model number (ie ID) of your microphone from a dropdown menu. That ID can be found directly at the back of your microphone. If by error your microphone is not referenced in the list, please contact your vendor for an update. Microphone installation The frame is describing precisely how to determine your microphone...

  • Page 50: Calibration Level Adjustment

    CALIBRATION LEVEL ADJUSTMENT Step 4 - Calibration Level adjustment In this step, you will adjust the output level of your speakers to the minimum required level for calibration. To avoid excessive level output, the output is automatically set to -40dB . Start Press in the Calibration level adjustement frame to launch a pink noise.

  • Page 51: Crossover Calibration

    CROSSOVER CALIBRATION Step 4 A Semi-automatic crossovers calibration The Step 4 displays different settings depending on the selected template: • The Cross-overs calibration is only available with the 2.0 Bi-amp template. • The Bass management crossover frequency is only available with the 2.1 and 2.2 templates. The calibration of bi-amplified speakers is a two-steps procedure: •...
  • Page 52 ...Semi-automatic crossovers calibration Please refer to your speaker's manufacturer specifications to determine the appropriate filters: • Low / High cross-over frequencies (default 2000 Hz) • Filter type (default 4th order Linkwitz-Riley). The following filters are available: • 2 and 4 order Linkwitz-Riley •...
  • Page 53 Crossover filters representation "Constant-directivity horn" EQ filters Scroll down to display the crossover filter representation. NOTE The calibration of multi-way speakers usually requires The green curve represents the theoretical low-pass filter response. high output level. The red curve represents the theoretical high-pass filter response. The blue curve represents the theoretical resulting response of the speaker.
  • Page 54 Crossovers Impulse response after calibration Amplitude (power & direct) response after calibration Impulse response Amplitude (power & direct) graph shows the measured impulse response of each driver and indicates whether graph shows the recombined amplitude response of the speaker: they are correctly synchronized or not. You can see whether the combination of the drivers is constructive, and you can observe the effects of level/delay/polarity modification on the combined amplitude of the speaker.

  • Page 55: Speaker Calibration

    SPEAKER CALIBRATION Step 4 B Bass Management setup The Bass management crossover frequency window is displayed with 2.1 and 2.2 Bass management templates. Low frequencies below the bass management crossover frequency will be filtered and sent to the subwoofer(s). -10/+10 -1/+1 Press the buttons to respectively decrease or increase the crossover...
  • Page 56 Step 5 Main Calibration Calibrate Main If you are coming from step 4-b  after having setup your bass management cross-over frequency press the If you are coming from step 4-a  after the cross-over calibration, press the button in the Calibrate Main Calibration Calibration button in the...
  • Page 57 Calibrate Main Calibration If you are coming from step 4 press directly the button in the frame to launch the speaker calibration sequence. Calibrate Pressing the button initiates a serie of 3 MLS ( Maximum Length Sequence, Calibration signal) minimum, that will be played and measured on each speaker (subwoofers included).

  • Page 58: Automatic Presets

    AUTOMATIC PRESETS Step 6 Turn off Microphone Next Step Turn off the microphone, the front light of the microphone will fade off. Press the button to continue. Step 7 Filters computation The ST2 HIFI is now computing 5 filters/presets. The computation can take 2 to 5 minutes. A progress bar indicates remaining computation time. The 5 presets tend to cover a large spectrum of listening types;...
  • Page 59 Step 8 Enjoy your ST2 HIFI Congratulations the Wizard is over You can now press the Enjoy your ST2 HIFI button and compare the five presets described in the previous page. Note that your system is muted for a security matter, so it is the good time to unplug your microphone and plug your favorite source. Presets The presets are directly available in the home page via the button.

  • Page 62: Trinnov Certified Installers

    Depending on how far you want to dig into its features, the Optimizer is either a straightforward and easy-to- use automatic compensation system or an incredibly  flexible  and powerful tool, including numerous advanced filter parameters,  target curves and manual EQ’s, all being recomputable on the fly. TRINNOV CERTIFIED INSTALLERS By following an iterative installation procedure, the Optimizer achieves results beyond expectations ...

  • Page 63: Iterative Procedure

    ITERATIVE PROCEDURE Whether it is using the Optimizer Settings of the Setup Wizard, the Target Curve or other parameters described in this chapter, the method to converge to the best results efficiently remains the same. 1 . Establish a correlation between the Optimizer graphs and the listening experience. 2.
  • Page 64 Settings screen Advanced Settings screen Advanced settings Settings Runtime menu can be accessed from the screen. The page automatically displayed is the menu, used to switch the different corrections of the Optimizer On Acoustics correction • : amplitude and phase response corrections Level Alignment •...

  • Page 65: Optimizer Graphs

    OPTIMIZER GRAPHS Reading and interpreting the Optimizer Graphs require some acoustic knowledge and is therefore dedicated to advanced users or certified installers. The Optimizer Graphs include a Display (1 ) and a Config (2) area. Display area is organized in  : •...
  • Page 66 Computation Graphs update The parameters described in the following chapters require a compu- tation to be applied. Apply changes As soon as a parameter is modified, the button will highlight. Pushing this button initates a new calculation. On modification of an Optimizer parameter and computation of the new Optimizer graphs response (After) compensation filters, the will be...

  • Page 67: Optimizer Modes

    OPTIMIZER MODES Optimize Modes Amplitude + Phase Maximum Boost Maximum Attenuation Amplitude + Phase parameters are used to avoid over-correction. mode is used in every factory presets except the natural preset. Excessive boost can cause distorsion and damage speakers and should be avoided unless the amplification It is the default behaviour of the Optimizer and implies amplitude AND phase response corrections to + speakers system has sufficient headroom.
  • Page 68 Amplitude only Low Range only Low range only Amplitude mode only provides amplitude response correction and result in less spatial accuracy mode does not provide phase response correction and only compensate the and stability. amplitude response up to 1 50Hz (Default).. Advanced settings The range of action of this mode can be defined in the page.
  • Page 69 IIR Filters maximal frequency According to L R speakers mode According to L&R speakers IIR filters are dedicated to low range amplitude accidents. mode takes the average response of the left and right loudspeakers as reference and automatically uses it as target curve. IIR filters maximum frequency can be modifed and requires a computation.
  • Page 70 According to L R speakers According to L&R speakers has its own specific parameters  : Processing on LR target IIR Only None Switching the from will disable the bass correction. Align on L&R target Disabling the option will result in a flat target curve for mid/high frequencies. Optimizer phase Off/On According to determines whether or not the phase correction is applied in...

  • Page 71: Optimizer Settings

    OPTIMIZER SETTINGS Maximum Boost Attenuation Maximum Boost Maximum Attenuation parameters are used to avoid over-correction. These parameters affect the bandwidth. Excessive boost can cause distorsion and damage speakers and should be avoided unless the amplification + speakers system has sufficient headroom. Filter response Displaying the should highlight frequency regions where the maximum boost/attenuation...
  • Page 72 Quantity of Early Reflections Resolution of the Energy response Quantity of Early Reflections Resolution of the Energy response The parameter determines the amount of early reflections taken into is the resolution of the room correction. account for acoustic compensation. 1 /3 oct is the default settings. 3 cycles is the default settings.

  • Page 73: Target Curve / Limiter Curves

    TARGET CURVE / LIMITER CURVE Target Curve Target Curve is certainly the most powerful and the easiest fine-tuning tool within the advanced settings to adjust the automatic calibration and achieve a suitable tonal balance. The correlation between graphical representation and listening experience can be made by comparing the Bypass before and after amplitude responses graphs while bypassing the correction using the button...
  • Page 74 Limiter Curve Limiter Curve is a frequency-dependant version of the Maximum boost/attenuation parameters. default Limiter curve limits boost and attenuation in the extreme frequencies. Limiter curve shows both the maximum boost and maximum attenuation allowed on a graphs with the amplitude in dB as ordinate and the frequency in Hertz as abscissa.
  • Page 75 Expert mode Pushing the HiFi mode switch the Limiter curve to and enables three edit functions: In this example, the compensation filter will not be allowed to boost the amplitude response by more than 0.1 dB between approximately 700 and 1 500 Hz. Move point •...

  • Page 76: About Latency

    ABOUT LATENCY The processing implies a latency, which depends on the following parameters  : • Sampling Rate • Buffer size • Advanced audio processing parameters The latency increases with the buffer size whereas it decreases with the sampling rate. Depending on the requirements of the application, you can try to reduce the buffer size to lower the latency but please be aware that it might result in CPU overloads, sync loss and eventually loud digital clicks, especially when processing 1 92kHz audio on multiple channels.

  • Page 78: Principle

    The purpose of multipoint calibration is not only to optimize a wider area but also to gather more information from measurements and increase reliability by taking differences occuring in the listening area into consideration. However, taking different measurements into account is irrelevant if the listening area PRINCIPLES considered is too much disparate acoustically.

  • Page 79: Multipoint Engine

    MULTIPOINT ENGINE Optimizer A mutipoint calibration can be performed in the settings/Calibration Advanced settings page, available in the Unless the preset loaded in the ST2 HIFI contains multi-measurement, this page should only display one measurement. calibration status weight Every measurement features a and a Lock option.
  • Page 80 Calibration wizard To perform multipoint measurement, please first refer to the regarding microphone Analog 1 Balanced connection, placement, calibration level and make sure the source is selected. Calibration wizard Unlike the , please note that every step needs to be made manually. Mute Master level As first step, push the...

  • Page 82: Sources Configuration

    SOURCES CONFIGURATION NOTE Even though the ST2 HIFI has mainly been designed to reproduce stereo content on any 4-speakers layouts, the unit can also handle 4-channels sources, including 3.0, 3.1 , LCRS and Quad. The Wizard does not include templates for such configurations. It is therefore necessary to proceed manually to configure both the input format, and the speaker layout.

  • Page 83: Sources Routing

    SOURCES ROUTING The next step is to configure the Sources routing to make sure the channel affectation complies with the Each column of the sources routing matrix corresponds to a physical Input. input connection. The caption above the routing matrix reminds the different types of inputs available on the ST2 HIFI: Each row of the sources routing matrix represents a source channel and depends on the sources format •...
  • Page 84 4-Channels sources The physical Inputs available in the routing matrix depends on the selected source: Selecting «Analog 1 SE» activates Analog 1 SE Analog 2 SE Inputs: Selecting «Analog 3 Bal» activates Analog 3 Bal Analog 4 Bal Inputs:...

  • Page 85: Speakers Configuration

    SPEAKERS CONFIGURATION Setup > Speakers The Speaker layout can be configured in the page of Advanced settings The number of speakers and subwoofer can be defined using the respective buttons and cannot exceed 4 in total. If the speaker layout includes subwoofer(s), the subwoofer will be calibra- ted full-range.

  • Page 86: Speakers Routing

    SPEAKERS ROUTING The Speakers routing matrix is similar to the sources routing matrix. Each row of the speakers routing matrix represents a source channel and depends on both the sources Each column of the speakers routing matrix corresponds to a physical Output. format and speaker layout respectively configured during the previous steps.
  • Page 87 Outputs Unlike for sources, all physical Outputs are used simultaneously. the first two columns the last two columns The signals affected to of the speakers routing matrix The signals affected to of the speakers routing matrix are simultaneously sent to the following Outputs: are simultaneously sent to the following Outputs: •...

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