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Related Manuals for Linea Research XiB Series
Summary of Contents for Linea Research XiB Series
- Page 1 Linea Research XiB series DSP amplifier User Guide version 1 Page 1 of 31...
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Page 2: Important Safety Information
Important Safety Information Please read carefully and keep the following instructions and safety information. Heed all warnings and follow all instructions. • Do not remove covers. There are no user serviceable parts inside; please refer servicing to qualified service personnel. •... -
Page 3: Table Of Contents
Table of Contents Important Safety Information ....................2 Regulatory Compliance ....................2 Thanks and Unpacking ......................5 Introduction and Key Features ....................6 Front Panel .......................... 13 Power Switch ........................ 13 Power ON indicator ......................13 Bridged Mode indicator ....................13 Control Software Online indicator .................. - Page 4 Signal Processing Block Diagram ..................29 Technical Specifications ..................... 30 Page 4 of 31...
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Page 5: Thanks And Unpacking
Thanks and Unpacking Thank you for choosing a Linea Research XiB series DSP amplifier system for your application. Please spare a little time to study the contents of this manual, so that you obtain the best possible performance from this unit. -
Page 6: Introduction And Key Features
Introduction and Key Features Introduction The XiB DSP amplifier systems from Linea Research integrate light-weight power supplies, high power sonically transparent class D amplifiers, complete system monitoring and a fully featured USB or network controlled 24 bit 96kHz DSP processing platform as standard. -
Page 7: Mechanical Installation
Mechanical Installation The XiB DSP amplifier system is designed to be mounted in a standard 19” rack enclosure. Where the amplifier is used in a fixed installation, it is possible to use only the front panel 19” rack mounting holes to mount it in a standard rack enclosure. If the amplifier is mounted in a mobile rack it is recommended that the rear rack mounting kit is fitted so Page 7 of 31... - Page 8 the amplifier can be well supported. Damage caused by insufficient support is not covered by the warranty. To prevent damage to the front panel it is recommended that plastic cups or washers are fitted underneath the rack mounting bolt heads. It is possible to mount multiple XiB amplifiers without ventilation gaps between them but it is essential that an unobstructed flow of clean air is available from the back of the unit to the front.
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Page 9: Ac Power Connection
AC Power Connection WARNING! THIS APPLIANCE MUST BE GROUNDED. The amplifier must always be connected using a 3-wire, grounded AC supply. The framework of the rack mount enclosure should also be connected to the same grounding circuit. The unit should never be operated unless the AC power cable ground is correctly terminated;... -
Page 10: Audio Connections
Audio Connections For each amplifier channel there are female and male XLR input connectors which are wired in parallel. Typically the female connector is used for the audio input, the male XLR connector being available to link the same audio signal to another amplifier channel. The HOT, + or ‘in phase’... -
Page 11: Using Unbalanced Connections
Using unbalanced connections When connecting the XiB amplifier to an unbalanced audio source, the signal conductor should be terminated to XLR pin2 and the cable screen terminated to both pins 1 and 3. In bridged mode output channel 1 signal chain provides the signal for the 1 & 2 pair of amplifier channels, output channel 3 signal chain provides the signal for the 3 &... -
Page 12: 100V Line Operation
More than one speaker can be connected to each channel provided the total impedance per channel is not less than 2 ohms. In bridged mode the minimum total impedance should not be less than 4 ohms. 100V line operation A single channel of an XiB can deliver 1250W in to 2 Ohms, therefore the RMS voltage at the speaker terminals when delivering this will be √(1,250 x2) = 50V. -
Page 13: Front Panel
Front Panel Power Switch The XiB amplifier is fitted with either one or two dual channel power modules. As the power modules operate independently there is a separate power switch for each. When the power switch is operated, the protect indicator will flash while the DSP and amplifier control systems are prepared. -
Page 14: Protect
Protect The XiB DSP amplifier system has sophisticated protection and monitoring systems which keep the amplifier within its safe operating window whenever possible. This indicator lights when the protection systems are active in any way. User DSP indicator Using the PodWare PC application the user can introduce audio processing such as EQ, gain and delay. -
Page 15: Rear Panel
Rear Panel Power Inlet The XiB series amplifier should be connected to a suitable mains electricity supply using the cable supplied. The unit uses auto ranging switch mode power supplies which are capable of operating with a nominal mains voltage of either 115V or 230V, 50/60Hz without re-configuration. -
Page 16: Communications Port Connections
-) Communications Port Connections Linea Research XiB series DSP amplifiers may be controlled and monitored using the PodWare PC application. There are two ways of connecting your computer to XiB: 1 – Using the USB socket (when you want to connect your computer to just one XiB) 2 –... -
Page 17: Podware Amplifier Control Panel
This section of the user guide explains the functions of the PodWare control panel for the XiB series DSP amplifiers. For further help and information on the main PodWare application please click on the help button on the main application. For more detailed help about the XiB control panel, click the “?”... -
Page 18: Amplifier Channels
Amplifier Channels It is important to realise that each two channel amplifier section contains its’ own DSP. So a four channel amplifier is logically split into two sections, each with two channels. There is an independent two channel control panel associated with each section. Each section will appear in PodWare as an independent ‘device’... -
Page 19: User Dsp
You may also mute the amplifier inputs using the mute buttons. You can change the view to the main panel by clicking the “>>” button. User DSP The amplifier can either use: • Factory settings determined entirely by the Factory preset file from your amplifier vendor (called “Factory voice”) –... - Page 20 The Output section allows you to control the output drive level of each amplifier. Also, depending on which parameters have been hidden by the vendor, you may also be able • Adjust the routing from inputs to outputs (allowing you for example to feed two outputs from one input).
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Page 21: Hidden Controls
The Power button allows the amplifier to be put into power saving mode when it is not being used. The associated Auto Power Save Time control allows the amplifier to automatically go into power-save if no audio signal has been detected for a period of time. This function can be defeated by setting the latter control to Manual. -
Page 22: Tool Bar
settings rather than the User DSP settings. However, routing (source selection), Limiter thresholds and Bridge mode become overwritten by the values in the factory file, even if the vendor has allowed you to edit these. For further information on loading factory settings, please refer to the PodWare application main help. -
Page 23: Audio Processing
PgUp Increase value (coarsely) PgDown Reduce value (coarsely) Up/Right arrow Increase value (finely) Down/Left arrow Reduce value (finely) On push-button controls: Space Activate Audio Processing The Digital Signal Processor (DSP) within the amplifier does all the necessary processing (such as crossover filtering, driver equalisation and power limiting) for the loudspeaker to give you a solution which operates well in most circumstances without the need for further user adjustment (apart from gain). -
Page 24: Equalisation Filters
Eight bands of parametric equaliser, each band having frequency variable over the range 10Hz to 25kHz, bandwidth variable from 0.18 to 5.6 octaves (Q 0.15 to 8.1), and boost/cut from –15 to +15dB. Delay adjustable up to 90ms. Adjustable input gain from –30 to +15dB, mute and polarity. Adjustable output gain from –30 to +15dB. -
Page 25: Limiters
Limiters deal with routine over-driving of the amplifier, making sure that the driver(s) are not pushed too hard. The limiter indicator(s) will warn you when the driver is being driven into limit. Minor faults are dealt with by ‘dimming’ the amplifier, reducing the level to a sufficient degree and for a sufficient time that the amplifier is able to recover gracefully without any user interaction. -
Page 26: Eq And Filter Response Graphs
EQ and Filter Response Graphs The following plots show the attenuation characteristics of the various crossover filters available within the XiB. These are all shown at a crossover frequency of 1kHz. Butterworth 1 . 10 1 . 10 Frequency, Hz 6dB/Oct 12dB/Oct 18dB/Oct... - Page 27 Bessel 1 . 10 1 . 10 Frequency, Hz 12dB/Oct 24dB/Oct Hardman 1 . 10 1 . 10 Frequency, Hz 4th Order 8th Order Page 27 of 31...
- Page 28 The following plots show the magnitude response (frequency response) characteristics of the various equalisation filters available within the XiB. These are all shown at a c frequency of 1kHz. Shelving EQ 1 . 10 1 . 10 Frequency, Hz Low shelf, varying Gain High shelf, varying Slope Parametric EQ 1 .
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Page 29: Signal Processing Block Diagram
Signal Processing Block Diagram Please note that each XiB4 contains two of these processing blocks, one for each pair of channels. Page 29 of 31... -
Page 30: Technical Specifications
Technical Specifications AUDIO Input impedance 10k balanced Max Input level +20dBu Frequency Response 20Hz - 20kHz+/-0.5dB @ 4 Ohm load Output noise -106dB A weighted Ref max output, 22kHz BW Distortion <0.05% (1kHz, -3dB output. 22kHz BW) PROTECTION SYSTEMS Output over current Initially gain reduced to maintain control, extreme or persistent over current causes shutdown Over temperature limiters applied, persistent over temperature causes shutdown... - Page 31 POWER SUPPLIES Type High current, high freq. switch-mode Number One / Two, fully independent Efficiency >90% typical Input voltage 115v / 230v nominal +/- 10% Input voltage selection Automatic Mains frequency range 45 - 65Hz Other features Automatic soft-start Automatic brownout recovery Remote shutdown Automatic over voltage protection THERMAL...
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