Table of Contents
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Table of Contents
Summary of Contents for OHM CRED Mark 2 2-4
- Page 1 CRED MARK 2 2-4 & 2-6 USER MANUAL...
- Page 2 EN55103-2 (1996) provides for a nominally flat response to 40kHz. Electrical Safety EN60065 (1998) Wellington Close • Parkgate • Knutsford Cheshire • WA16 8XL • England Tel: +44 (0)1565 654641 • Fax: +44 (0)1565 755641 Email: info@ohm.co.uk • Website: www.ohm.co.uk...
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Page 3: Table Of Contents
CRED Mark 2 2-4/2-6 Quick Reference Guide Display Channel Select Buttons Edit Select Buttons Parameter Knobs Mute Buttons Store Buttons Recall Button The User Guide Front Panel Input Signal Indicators Preset Store and Recall Channel Select Buttons Edit Select Buttons... - Page 4 This modern design is combined with OHM Factory Presets to deliver the optimal match for OHM cabinets and systems. These presets allow the user to simply achieve the best possible Unpacking Carefully open the shipping carton and check for any noticeable damage.
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Page 5: Quick Reference Guide
CRED Mark 2 2-4/2-6 Quick Reference Display The LCD Displays preset and parameter information. The default screen is shown after start up and displays the number of the current preset on the lower line of text. When navigating around the adjustable parameters, other information is shown. -
Page 6: Front Panel
Front Panel 1 Input Signal Indicators A set of three pairs of LEDs indicate signal present, +4dBu and input clip for each channel. The signal present LEDs operate at approximately 40 dBu, giving a useful indication of even relatively low input signal levels. -
Page 7: Output Signal And Limiter Indication
CRED Mark 2 2-4/2-6 7 7 7 7 8 8 8 8 7 Output Signal / Limiter Indication Two LEDs are provided for each output channel. These show the signal level relative to the limiter threshold. The yellow LED will light when the signal is 6dB below the threshold and the red 8 Mute Buttons and Status LEDs Each output has a mute button and associated status LED. -
Page 8: Rear Panel
PUSH 1 Power Inlet The OHM CRED series unit should be connected to a suitable mains electricity supply using the cable supplied. The processor has a switch mode power supply that is capable of operating with a nominal mains voltage of 85V to 240V, 50/60Hz without re-configuration. -
Page 9: Operation
Selecting a Factory Preset The CRED series processors have a library of Factory Presets designed to suit a range of OHM enclosures. Factory Presets contain some parameters that are fixed and hidden from view; the remainder of the DSP parameters are available for user manipulation. The number and type of hidden parameters is... -
Page 10: Navigation
A parameter may be adjusted when it is displayed by turning one of the three-parameter knobs. Each of the three-parameter knobs is associated with a zone on the display. Adjusting the leftmost parameter knob will change the value of the parameter showing in the leftmost zone of the display and so on. -
Page 11: Preset Store
CRED Mark 2 2-4/2-6 Preset Name Recall 32 My System Recall Recall SELECT PRESET TO RECALL Users can develop their own Preset based on one of the basic or Factory Presets stored within the device. Once a basic or user Preset has been recalled, a user has complete freedom to adjust any or all of the parameters. -
Page 12: Output Dsp Block Diagram
DSP Processing layout Input DSP block diagram Six Band High Input Input 4 Order Input A Delay Shelf EQ Shelf EQ LED’s Gain Routing -6dB Input B NB. Channel B processing is Identical to Channel A but for clarity it is not shown Output DSP block diagram Six Band High... -
Page 13: Dsp Processin
CRED Mark 2 2-4/2-6 DSP processing Input Channels Gain In A Gain 0.0dB ! Knob A: Gain, adjustable in 0.2dB steps from -80dB to +20dB Delay In A Delay 1.50ms ! Knob A: Delay, adjustable in variable steps from 0 to 400ms The delay parameter is adjustable in fine steps at low values;... - Page 14 System high pass filtering is provided for the input signal. This is the preferred location for high pass filtering as it affects all outputs and can therefore improve inter-band phase relationships. Filter type is selectable from Butterworth, Bessel, Linkwitz-Riley and Hardman. Filter slopes of up to 4th order or 24dB / octave are provided.
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Page 15: Output Channels
CRED Mark 2 2-4/2-6 Output Channels Gain and Polarity Out1 Gain 0.0dB Knob A: Gain, +/-15dB in 0.2dB steps Knob B: Changes polarity from Norm/Rev Delay Out1 Delay 1.5ms Knob A: Adjustable in variable steps from 0 to 80ms As for input delay, velocity sensitive Parameter Knobs provide finer adjustments at low levels and rapid selection of higher values. - Page 16 Parametric Equalisation Eight sections of equalisation are provided in a similar format to the input channel equalisation; two shelving filters and six parametric. Out1 Freq Slope Gain EQ>- 100Hz 12dB 0.0dB Knob A: Frequency, 10.0Hz to 25.6kHz in variable steps Knob B: Slope, 6 to 12dB / octave in 1dB steps Knob C: Gain, +/-15dB in 0.2dB steps The frequency is specified as point where the filter deviates by 3dB from the gain value.
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Page 17: Utilities
CRED Mark 2 2-4/2-6 Routing Out1 Source Inp A ! Knob A: Output source, selectable; Input A, Input B or Sum A+B Configures the routing from input to output. This function is only available in mono format Presets. Utilities Two utility functions are provided to adjust screen contrast and the display units used for parametric equalisation bandwidth. -
Page 18: Factory Presets
Factory Presets CRED 2-4 Location Preset Name Out 1 Out 2 Out 3 Out 4 Full Range Full range Full Range Full Range Basic Mono Basic Stereo 20~5K 5K> 20~5K <90.6 96.6> <90.6 96.6> TRS-218 + TRS-212 <90.6 96.6> <90.6 96.6>... -
Page 19: Eq And Filter Response Graphs
CRED Mark 2 2-4/2-6 Factory Presets 2-6 Preset Preset Name Out 1 Out 2 Out 3 Out 4 Out 5 Out 6 Full Range Full range Full Range Full Range Full Range Full Range Basic Mono 20~250 250~5K 5K> 20~250 250~5K 5K>... - Page 20 Information With the exception of HD and Lunaray Systems all settings are based on a 1:1 ratio and for use with CFU-A3 amplifiers with gain sensitivity set at 1.1v. Delays are set for “flush fronts”. Note: Delays are linked so care should be taken to address the whole system especially in 3 and 4 way systems IE: Saturn and HD when any adjustments are made.
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Page 21: Technical Specification
CRED Mark 2 2-4/2-6 Technical Specification General Inputs two [CRED-2-4 & CRED-2-6} > 10k Ohm Electronically balanced Input Impedance Maximum Input level +20dBu Outputs four [CRED-2-4] or six [CRED-2-6] Output Impedance <100 Ohm, ground balanced +20dBu into 600ohm load Maximum Output Level... - Page 22 NOTES...
- Page 23 Wellington Close • Parkgate • Knutsford Cheshire • WA16 8XL • England Tel: +44 (0)1565 654641 • Fax: +44 (0)1565 755641 Email: info@ohm.co.uk • Website: www.ohm.co.uk...