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DSP audio system
iDR is a 16in/16out DSP mixing and processing solution for installed and live audio systems that's easily expandable, packed with processing muscle and endowed with a fantastic selection of remote control options.

The installer chooses the right combination of products from the iDR family to create 'set and forget' tailored audio distribution and control systems. Day-to-day operation is incredibly simple and convenient, with a range of wallplates and other remote controllers available to suit the application. As you would expect from Allen & Heath, the iDR is fully capable of delivering concert quality audio and offers both 48k and 96k operating modes.

Once you have started using iDR you will see uses for it everywhere! The flexibility of the iDR concept makes it ideal for controlling background and/or foreground sound in installed systems. It can also be used for live sound speaker management and monitor processing. iDR is at home in front-of-house or monitor processing racks, in theatres, houses of worship, restaurants, retail outlets, conferencing facilities, government buildings, nightclubs, leisure centres, museums, hotels, amusement parks and countless other environments where audio might need to be controlled and distributed.

iDR-8 front panel
The iDR-8 front panel has 16 soft keys plus 32 tri-colour LEDs. iDR-in and iDR-out expanders each have a further 8 LEDs. What these keys and LEDs do is up to the installer - they can be volume controls, source selectors and meters, they can recall presets, or in a fully protected system they can do nothing at all. iDR-8 has an LCD display which normally shows basic information such as time or unit name but can also show custom messages programmed into presets. iDR-8's face plate can be removed for access to the unit's internal clock, network setup and diagnostic menus, plus RS232 port for PC connection (there is another port on the rear of the unit) and a label strip which is protected behind a window when the face plate is in place.

Audio Processing
At the heart of iDR-8 is a pair of powerful Motorola DSPs. Having somuch processing muscle available has several major advantages:

•         iDR-8 has a fixed architecture with full processing for allinputs and outputs, so the installer does not have to think about conserving orallocating resources

•         iDR-8 has a 48kHz, 16x16 mode and anaudiophile 96kHz, 8x8 mode

•         No DSP or delay expanders areneeded - everything is included in the standard unit.

iDR-8's processing includes preamp, fader, mute and polarity control, parametric EQ,crossover filters, compressors and gates with sidechain filter, limiters,crosspoint matrix, input and output patchbays, stereo/group linking, 16 levelducker, ambient noise sensing, automatic mic mixer, two independent pagers andsignal generator for lineup tones and pink noise. The equivalent analogue processing equipment would easily fill several racks!

Preset System
The iDR preset system is supremely flexible, allowing the installer to save, name and recall up to 250 presets containing only those parameters which they have specified. This makes it easy to provide both global and zone-dependent control. Presets can be recalled by day of the week/time and levels can be cross-faded for smooth transitions. All presets can be archived with iDR settings as a configuration file.

Audio I/O
The basic iDR-8 has 8 balanced XLR mic/line inputs, 8 balanced XLR line outputs and enough processing for the full 16x16 matrix. The high quality preamps feature programmable gain, pad and +48V control as well as a unique pre-A/D converter soft clip hardware limiter, designed by Allen & Heath to eliminate the distortion associated with clipping of digital converters.

Audio Monitor
iDR's monitoring system is wonderfully convenient, flexible and powerful. Any point in the signal chain can be listened to via stereo headphone or line outputs. Monitoring can be 'daisy-chained' through several iDR-8 units, so the user can monitor any point in a big distributed system. Monitor source is selected manually or by dragging the mouse pointer over the iDR Manager software windows. The monitor can be reassigned to unused iDR-8 channels, bringing the basic unit architecture up to 10x10.

Remote Audio
Adding an iDR-in and / or an iDR-out expander to an iDR-8 brings the channel architecture up to 16x8, 8x16 or the full 16x16. The expanders can be sited up to 300 metres away from the main unit, making them ideal for local audio connection in distributed systems.

iDR Control
A look at iDR-8's back panel reveals the scope of iDR's controlcapabilities. iDR-8 can communicate with iDR-switch units, iDR-in and iDR-outexpanders, third party controllers, PL Series 'intelligent' wall plates, MIDIshow controllers, PCs, networks and modems. Up to 4 communications ports can beused at once - network and DR-link ports are always available, with two moreselected from RS232, Sys-Net, MIDI and PL-Anet. Rear panel leds clearly indicate active ports.

iDR-switch
iDR-switch wall plates and other external equipment such as curtains, lights, custom panels, PIR sensors, etc. can be easily brought under iDR control using iDR-switch. A total of 3 iDR-switch units can be included in an iDR system, providing up to 72 switch closure inputs and 48 logic outputs.

iDR in/out Expander Units
iDR-in and iDR-out are add-on audio expander units for the Allen & Heath iDR-8 audio mix processor. They provide additional analogue audio inputs and outputs to add to those on the main unit. The iDR-in has 8 mic/line inputs, the iDR-out has 8 line outputs.One or both may be connected to the iDR-8. Only one of each may be added to the iDR system bringing it up to a maximum 16x16 audio matrix.

These units do not have any processing built in. They convert the analogue audio to an 8 channel wide digital bus which feeds the iDR-8 via a CAT5 STP cable. The iDR-in features high grade mic/line preamps with PC configured gain, pad and phantom power switching, and a built-in soft clip limiter.

The iDR-out provides electronically balanced differential outputs. The processing is available onthe main iDR-8 unit which features the full 16x16 matrix. Both units have 8 front panel LEDs in addition to the 3 status indicators. These are 3-colour soft LEDs which can be assigned as audio meters, mute indicators or patch related indicators. They are programmed in the usual way using the iDR System Manager software.

Control of the expanders is via the DR-Link port using a CAT5STP cable. This means that two CAT5 cables are required to interconnect an expander to the main unit. Maximum distance between the units is 250 metres.Local mains power is required.

PL Designer and PL Client software
Bundled with the new iDR System Manager v3.2, ALLEN & HEATH offers new software for the design and operation of virtual wall plate style remote controllers. These are designed by the installer to provide control interfaces running on client PCs connected to the iDR via a network.

PL Designer lets the designer create a control layout from a selection of control types such as switches, faders and LEDs, or from parameter windows such as EQ. These can be associated with selected iDR channels and labelled for on-screen identification. The resulting PL Client panel can be installed on the client PC. Different panel layouts can be designed and customised for different rooms and applications. For example, a hotel receptionist could control local sound sources and volume using a panel window running on the computer.

 

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