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DPR 504

User Manual

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Summary of Contents for DPR 504

Page 1: ...1 DPR 504 User Manual...

Page 2: ...ED PRACTISE OF BSS AUDIO AND WILL RENDER ANY EMC OR SAFETY CERTIFICATION VOID For continued compliance with international EMC legislation ensure that all input and output cables are wired with the cab...

Page 3: ...started 12 7 0 Operating instructions 14 7 1 Filter and Width 14 7 2 Key listen 15 7 3 Threshold 16 7 4 Key level meter 16 7 5 Gate open indicator 17 7 6 Attack release hold 17 7 7 Range 20 7 8 Link 2...

Page 4: ...ters Key listen provides operator with the facility to hear the effect of Key side chain EQ or other processing effect as an aid to setting up Dual metering system which indicates both average and pea...

Page 5: ...to undergo extreme vibration through extensive road trucking and touring the unit must be supported at the rear and or sides to lessen the stress on the front mounting flange The necessary support ca...

Page 6: ...ranges selectable with the mains voltage selector switch on the rear of the unit It is vital that the position of this switch is checked BEFORE initial power up to ensure that it matches the local mai...

Page 7: ...e fuse for continued compliance with safety standards It is very unlikely that fuses will blow during normal use but if replaced fuses continue to blow then the internal transient suppressors may have...

Page 8: ...8 The DPR 504 Fig 4 2 Rear Panel Fig 4 1 Front Panel...

Page 9: ...9...

Page 10: ...00 ohms or less The nominal input level is between 10dBv and 10dBv with an upper maximum or 20dBv Connector wiring is shown in figures 5 1 5 2 There is no internal connection to the Pin 1 terminal and...

Page 11: ...in figures 5 3 5 4 Should an unbalanced output be required then the Cold pin must be connected to Pin 1 to ensure no loss of output level For some rack mounted systems the chassis or safety power grou...

Page 12: ...r control to 1kHz Set the width control to 10 The gate open triangular LED will be illuminated and the program signal should be heard at the same level as if it were not connected through the gate cha...

Page 13: ...en the gate Dynamic functions are those that determine when to open and close the gate Mode functions are those that determine why the gate opens and by how much Control classfication Key fucntions Ke...

Page 14: ...for the centre of the response without regard to the octave value set by the width control In use the user should commence with a fairly wide width setting and then progressively narrow the response...

Page 15: ...uld be used during the setup of the side chain key filter and width controls as it is often easier to more accurately set them whilst listening to their effect The key listen signal appears at the out...

Page 16: ...l and is displayed as a moving dot above the average column in a simultaneous manner The dynamics of this display are optimised for user visibility and accuracy with the peak dot exhibiting a damped d...

Page 17: ...uence which is called hold Hold is a period of time for which the gate will remain fully open once the signal has dropped below threshold level and is necessary to avoid the 7 5 Gate open indicator Th...

Page 18: ...pplications but provides control over a wide range to allow more critical tuning in sensitive applications The decay contour has been given a special audio taper which ensures that even relatively fas...

Page 19: ...ignal has since fallen below 0dB threshold Similarly the hold sequence continues for its set duration and avoids the starting of another attack sequence should the key signal momentarily fall below 0d...

Page 20: ...s ideal for use when cleaning up acoustic microphone lines and other noisy sources during live sound reinforcement shows When the switch is set to 70dB the gate action will be very much on off This is...

Page 21: ...nd connected in parallel with that of the master channel such that the action of the slave channel is now totally controlled by the master If it is not required for the side chain key signal of the sl...

Page 22: ...ng internal signal to enhance the selectiveness of the gate switching 7 10 IN This switch selects whether the gating action is active or not When the switch is out the gate will be held permanently cl...

Page 23: ...will be demonstrated by repeated mains fuse failure at power up Even in this case of extreme over voltage the DPR 504 is protected against failure and the simple removal of the damaged suppressors wil...

Page 24: ...h this procedure it is recommended that you recheck all audio wiring for correctness Should it be necessary then the simple removal of an internal wire link accomplishes this task Refer to figure 8 2...

Page 25: ...has been completed If the unit was purchased in the European Union you may as an alternative return the unit to any other BSS distributor in the European Union You should include a statement listing...

Page 26: ...tween 0 5 and 10 octaves Key source Switchable internal or EXTernal via 1 4 RTS jack Threshold Variable between 20dBv and 50dBv Attack Audio attack switchable FAST 20uS or AUTO 40uS 5mS program depend...

Page 27: ...G Gate open 17 Getting started 12 H Hold 17 I IN 22 Inputs 10 Installation 5 K Key level meter 16 Key listen 15 L Link 21 M Mains fusing 6 Mains power connection 6 O Outputs 11 R Rack dimensions 6 Ra...

Page 28: ...2 8 User Notes...

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