The concept of an equalisation device which allows the user to not only select from a menu of various EQ types but also to integrate them with each other in any combination is one that could only have come from Klark Teknik. At the heart of Helix DN9340E is the fact that it sounds incredible – the most common remark from first-time users is ‘it sounds just like a great analogue EQ!’
For the uninitiated, the new Helix DN9340E is a dual channel, 2RU, all-digital equalisation unit that simultaneously offers a five-mode 31-band graphic EQ, twelve bands of full parametric EQ, four configurable filters (HPF, LPF, hi shelf, lo shelf and notch) and two bands of true dynamic EQ (T-DEQ) per channel.
Unit control is provided by both a touch strip and rotary controls, full input and output metering is provided plus dedicated meters for the T-DEQ function. A large, bright LCD display provides visual reference for all functions and the entire menu structure is simple and intuitive. Helix can also be linked to Midas Siena, Legend and Heritage consoles via the Solo Tracking System (STS): this allows any channel of connected Helix EQ to be edited from the control surface of a single Helix DN9340E unit or PC simply by activating the appropriate PFL function on the console (STS only works on the outputs of the Siena).
By linking a DN9331 RAPIDE to the DN9340E it allows the user to have instant control over the Helix 31 band graphic EQ function thanks to the unique 31 Klark Teknik 100mm motorised faders fitted to this unit.
The Helix DN9340E also features AES/EBU digital inputs and outputs as standard, complete with word clock sync inputs. Whilst the internal sample rate of all DN9340/44E units remain at 48kHz/44.1kHz, these digital connections are all 96 kHz compatible allowing easy interface with any other digital device featuring the higher sample rate.Secondly the Helix DN9340E unit also features a dual port Ethernet communications interface. This is to facilitate much faster communication, response and metering between units than was previously possible with serial comms. The Ethernet ports allow for control of the units from a PC, either via Ethernet or wirelessly with the Helix EQ Remote Control Software (RCS) an ELGAR Add-In.
The Digital Equaliser shall provide two audio channels (analogue and digital, in and out) in a standard 2U 19” rack mount chassis.
Each audio channel shall include: Source select (analogue or digital), input gain, delay up to one second, up to four filters, two dynamic EQ bands, up to 12 parametric EQ bands and a 31 band graphic EQ.
Digital inputs shall run at any sample rate up to 96kHz with internal sample rate conversion. The sample rate converter can be bypassed when the incoming digital signal has a sample rate of 44.1kHz or 48kHz.
A word clock input shall be provided to allow the system to lock to an external clock source. In addition, the word clock input can be used to only clock the digital outputs allowing digital audio to come into the unit at one sample rate and go out at another.
Digital outputs shall also run at any sample rate up to 96kHz. In standard operation, they shall run at the system sample rate (48kHz or 44.1kHz). Using the internal SRC, the digital outputs can also run at the same sample rate as the digital inputs or the word clock input.
All delay times shall be set in milliseconds and microseconds, or in distance units (metric and imperial) with a temperature compensation facility.
The high and low pass filters shall be selectable from notch, high pass, low pass, high shelf and low shelf types. The Low pass and high pass filters shall have selectable slopes of 6, 12, 18, 24, 36 and 48 dB per octave and the high and low shelf filters shall have selectable slopes of 6 and 12 dB per octave and ±12 dB of gain.
The dynamic EQ sections shall have independent high and low level thresholds and gain and be selectable from parametric EQ, or high shelf or low shelf filter types. The parametric EQ shall provide proportional-Q, constant-Q and symmetrical-Q responses. The dynamic EQ sections shall also have independent attack and release times.
The parametric EQ sections shall have up to 12 dB of cut or boost and a Q value variable from 0.4 to 20. The parametric EQ shall provide proportional-Q, constant-Q and symmetrical-Q responses.
The graphic EQ section shall provide 31 bands on standard frequencies defined in BS EN ISO 266 : 1997. Proportional-Q, constant-Q and symmetrical-Q responses shall be provided as well as emulations of Klark Teknik DN27 and DN360 Graphic Equalisers.
Each Digital Equaliser shall meet or exceed the following performance specifications:
Frequency response: ±0.3 dB (20 Hz to 20 kHz)
All analogue audio inputs and outputs shall be electronically balanced and use XLR connectors. All digital audio inputs and outputs shall be 110Ω AES/EBU and use XLR connectors. A 480 x 64 graphic LCD shall be provided to display a graphical representation of the equaliser section responses. All parameters shall be displayed and adjusted via a 20 x 2 alphanumeric LCD display, three rotary encoders and individual menu buttons for each equaliser section. A dual touchstrip shall be provided for use with the graphic LCD to allow the selection of graphic EQ band and gain, and centre or corner frequency for filters, and dynamic and parametric EQ. The graphic and alphanumeric LCDs and the dual touchstrip shall have LED backlights.
There shall be provision for 32 system memories and 32 factory presets with a security lock-out feature. There shall also be a security lock-out feature that is enabled when the unit is under remote control.
The Digital Equaliser shall be provided with RS-232 ports on the front and rear panels and two Ethernet ports on the rear panel. The Ethernet ports and front panel RS-232 port shall be provided for remote control from a master Digital Equaliser or a PC and additionally the front panel RS-232 port shall also provide the facility to download software updates and preset memories into the Digital Equaliser. The rear panel RS-232 port shall be provided for remote control from Midas Heritage and Legend mixing consoles. The Digital Equaliser shall be controllable from the ELGAR remote control PC software.
The unit shall be capable of operating from a 100 to 240V, 50 to 60 Hz a.c. power source.
The Digital Equaliser shall be the Klark Teknik model DN9340E and no alternative option is available.
Digital Inputs Two
Analogue Inputs Two
Word Clock Input
Digital Outputs One 2-Channel Output
Analogue Outputs Two
Processing (Per Channel)
Show Command Component
Trade Descriptions Act:
Helix DN9340E and DN9344E EQ Remote Control Software (RCS) Add-In allows remote PC access to all the functions of Helix EQ, including overall system store and recall. An extremely intuitive Graphical User Interface (GUI) allows simple navigation between function pages. The system is designed to work with all PCs including the latest hand-held PC tablets for ease of wireless connection and portability.
Real time indication of unit on-line / off-line status is visible on all pages and the individual function pages have familiar and easy to use controls whether using a mouse, keypad or stylus. The make or break of this type of system is always navigation, and this is one of the Helix EQ RCS’s real strengths, using our proprietary ‘FastNav’ page. This is a control panel that is always active, and shows every function of every channel. Thus it is possible to move between, for instance, the graphic EQ for channel 10 and the T-DEQ controls for channel 37 with a single click.
Helix DN9848E System Controller Remote Control Software (RCS) Add-In provides on-line remote control and off-line system configuration, either via wired or wireless Ethernet technology. The remote control software allows intuitive control of every function of an individual unit or units, it also (and uniquely) allows inputs and outputs to be assigned to control groups. These groups can then be made to control any parameter of the unit or the system – muting, delay, EQ, dynamics, speaker or room zones, whatever you need. Simple screens with easy-access controls make for quick adjustments and entire system set-ups can then be stored as an ELGAR computer file.
To download ELGAR, Klark Teknik Add-Ins, as well as the latest hostcodes for the individual units, please click here and it will take you to the Download section or use the links in the menu at the top of the page.
DN9340E / DN9344E