Speck XTRAMIXcxi Reference Manual Download Page 3 | Manualshive

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Chapter 2 Initial

Contents

iii

General ......................................................................................
Operator Safety Summary .........................................................
Power

Source

......................................................................

Grounding the product ........................................................

Use the proper power cord ..................................................

Use the proper fuse .............................................................

Panels and Covers ...............................................................

General Description ...................................................................
Input

section

........................................................................

Effects

section

.....................................................................

Master

section

.....................................................................

Features .....................................................................................
Standard Accessories .................................................................
Regulated

power

supply

......................................................

Rack mount adapters ...........................................................

Rubber

Protectors

................................................................

Specifications ............................................................................




Unpacking and Inspection  .........................................................
Environmental Considerations  ..................................................
Grounding

...........................................................................

Rack

grounding

...................................................................

Repacking for Shipment  ............................................................




General ......................................................................................
Mechanical Installation  .............................................................
Physical Placement of Adjacent Equipment ..............................
Power supply  .............................................................................

Contents

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Chapter 1 Introduction

Chapter 3 Installation

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Summary of Contents for XTRAMIXcxi

Page 1: ...Ultra Compact Studio Line Mixer speck electronics Reference Manual Version 5b XTRAMIXcxi...

Page 2: ...without permission the customer agrees to pay for parts and labor necessary to remove the modification before repair The cause of the defect is in the sole judgment of Speck Electronics Should a defec...

Page 3: ...ster section Features Standard Accessories Regulated power supply Rack mount adapters Rubber Protectors Specifications Unpacking and Inspection Environmental Considerations Grounding Rack grounding Re...

Page 4: ...Sends Stereo Effects Return Section Monitor Section Master Section Stereo Cue Return Section Stereo Aux Return Section Talkback Section Rear Panel Controls Input Channel Connections and Switches Effec...

Page 5: ...per AC Grounding Quality AC system AC distribution Clock noise and AC Safety earth connection Electronics earth Proper Audio Grounding and Shielding EMI and RFI Sources of EMI Reducing EMI 44 44 44 44...

Page 6: ...unded through the grounding conductor of the power cord To avoid electrical shock plug the power cord into a properly wired receptacle before making any audio connection to the mixer A protective grou...

Page 7: ...2 Figure 1a Front Panel Layout Figure 1b Rear Panel Layout XTRAMIXcxi XTRAMIXcxi Chapter 1 Introduction Section...

Page 8: ...oup 2 output mixer or any combination of the above mentioned configurations The mixer is divided into three basic sections The input section the effects send and return section and the master section...

Page 9: ...witching Eight assignable subgroups available for all input channels and effects returns Effects send outputs have summing points so that other mixers aux outputs may be combined with the Xtramix send...

Page 10: ...put Impedance Subgroup Insert Return Impedance Effects Sum In Impedance Effect Send Output Impedance Program Feed Output Impedance Monitor Feed Output Impedance Tuner Feed Output Impedance Subgroup Fe...

Page 11: ...to indicate 0 VU Frequency response measured at program feed left Residual Noise Measurement Any primary line In to Program Out 89 dBu unweighted 95 dBu A weighted Test Conditions 0dBu signal at left...

Page 12: ...avoid locating the Xtramix or any low level audio equipment immediately adjacent to power amplifiers power supplies or any source of Electromagnetic emissions To protect operating personnel the Nation...

Page 13: ...erial number of the product Place the product in the original container if available If the original container in not available a suitable one can be purchased from Speck Electronics If the original c...

Page 14: ...of the operators normal position in order to facilitate the use of the front panel controls Any device that emits a high EMI Electro Magnetic Interference or RFI Radio Frequency Interference energy fi...

Page 15: ...ning the mounting location The power supply may be wired to operate with 100 VAC 120 VAC 220 VAC 230 VAC or 240 VAC 50 60hz Before applying AC power you should verify that the voltage setting on your...

Page 16: ...into the receptacle on the power supply The connectors are keyed so they will only fit in one direction Next fit the rectangular plug into the connector at the rear of the Xtramix These connectors ar...

Page 17: ...is made to operate the mixer it would be a good idea to set all the mixers controls to their neutral positions This gives you a reference point to work from when adjusting controls and switches All v...

Page 18: ...hing the panel or markings Paper towels are not recommended Commercially available window cleaner solutions may be used however the solution should be applied to the cloth and not the panel to avoid t...

Page 19: ...This page intentionally left blank 14 Chapter 3 Installation Section...

Page 20: ...sign switches that are used in conjunction with the effects send pots for assignment to 8 effects send busses Each channel also incorporates an in place solo switch on the front panel and high low lev...

Page 21: ...16 Figure 2 Input Channel Chapter 4 Operation Section...

Page 22: ...o not automatically mix to the program monitor and headphone outputs They must be assigned to a subgroup first Once assigned to a subgroup the monitor level and pan for that respective subgroup is the...

Page 23: ...Master Monitor or Headphone level although adjusting the Master Monitor or Headphone level will not affect any relative balance created with the Input Level Control Be aware that the solo circuit acti...

Page 24: ...mono composite for the effects sends There are two Effects Send Controls available per input channel in the form of a black capped dual concentric potentiometer The smaller inner knob is labeled as th...

Page 25: ...f the black capped concentric adjusts the level being sent to the selected Even effects bus This control is used in conjunction with the Even Effects Assign Switch and Even Assign Changeover Switch Wh...

Page 26: ...21 Figure 3 Stereo Effects Return Channel Chapter 4 Operation Section...

Page 27: ...when used in conjunction with the Channel Subgroup Assign Switches allows the effects return to be assigned to any of eight individual subgroups or any of four subgroup pairs When an effects return i...

Page 28: ...oup Assign Switches will select subgroups 5 thru 8 Depressing this switch allows you to isolate any effect return to the Monitor and or Headphone outputs while maintaining stereo perspective The sourc...

Page 29: ...24 Figure 4 Monitor Channel Chapter 4 Operation Section...

Page 30: ...ive stereo mix level of all signals assigned to its associated assign subgroup With the Monitor s Pre Post switch see rear panel set to Pre this control will function independent of the assign Subgrou...

Page 31: ...is allows you to solo multiple monitor channels while retaining their relative levels Depressing this switch deletes the Bus Subgroup signal from the Monitor Program and Headphone feeds although its a...

Page 32: ...27 Figure 5 Master Section XTRAMIXcxi Chapter 4 Operation Section...

Page 33: ...ssed this LED will change from green to red These 10 segment VU volume units meters indicate the relative levels of the stereo program and 8 subgroup outputs and are sensitive from 20db to 3db Dependi...

Page 34: ...ster Typically the monitor outputs would be connected to a stereo power amplifier for purposes of driving a personal monitoring system However in situations where the Xtramix is interfaced to for inst...

Page 35: ...amplifier via a dedicated headphone box the input sensitivity of the Cue Return has been calibrated accordingly Do not attempt to connect the speaker terminals of any power amplifier directly into th...

Page 36: ...microphone will operate most efficiently when the operator speaks at a distance of about two feet from the mike This mike is activated by the Talkback Switch and is adjusted with the Talkback Trim Co...

Page 37: ...32 Figure 6 Input Channel Connectors and Switches Chapter 4 Operation Section...

Page 38: ...gnal to any stereo input channel use only the left input connector Doing so effectively converts the channel status from stereo to mono thereby eliminating the need for any external Y type connections...

Page 39: ...34 Figure 8 Effects Monitor and Subgroup Connectors Chapter 4 Operation Section...

Page 40: ...3 This potentiometer adjusts the output level to the outboard effects device itself of all channel signals routed to an Effects Send Master via its associated channel s Effects Send Controls When matc...

Page 41: ...four odd subgroups 1 3 5 7 see Effects Return Assign Switches on the front panel Typically this input is utilized to connect the right output of a stereo effects device When an effects return is opera...

Page 42: ...ut for the return of any stereo line level signal such as a analog digital or hard disk recorder A discrete mono signal may be utilized when plugged into the left connector only These 1 4 input connec...

Page 43: ...38 Figure 10 Master Input Output Connectors Chapter 4 Operation Section 23...

Page 44: ...before pre the Program Master Level Control This means that any device interfaced to this jack will be processed before the Program Master Level Control and will not be affected by any adjustments of...

Page 45: ...be wired accordingly See figure 11b These balanced 1 4 TRS phone type connectors are the left right outputs for the stereo program master The signal present at these jacks is adjusted by the Program M...

Page 46: ...or the monitor and headphones are before Pre the Program Master Control When set to this position any adjustment to the Program Master Control will have no direct affect on the monitor or headphone ou...

Page 47: ...dio signal A discrete mono signal may be utilized when plugged into the left connector only Connections to the Cue return stereo input should be made with standard unbalanced tip and sleeve TS 1 4 plu...

Page 48: ...erator will be required to perform this adjustment This 4 pin connector will accommodate the connector from the power supply cable The connectors are keyed so they will only fit in one direction For i...

Page 49: ...44 Chapter 4 Operation Section This page intentionally left blank...

Page 50: ...en add one synth to the mixer at a time carefully listening and monitoring your progress If a problem arises such as a buzz hum intermittent signal or nonexistent signal stop at that point and solve t...

Page 51: ...hen using a larger rack system it is recommended that a dedicated and isolated AC service be provided This service should have its own AC wires isolated receptacle and breaker and not be shared with o...

Page 52: ...likely be your audio equipment and would result in unwanted buzzes or hums In order for any audio signal such as a synth signal to get from the synth to the mixer it requires a minimum of 2 conductors...

Page 53: ...by other electronic devices There are natural and man made sources of EMI that you can t do anything about These sources include radio TV and radar transmitters as well as motors lights and computers...

Page 54: ...Appendix A 49 Signal Flow Diagram Part A...

Page 55: ...Appendix A 50 Signal Flow Diagram Part B...

Page 56: ...witchcraft 297 Balanced Effects Sends 1 8 T R S Switchcraft 297 Balanced Effects Sum 1 8 T R S Switchcraft 297 Unbalanced Tuner Output T R S Switchcraft 297 Balanced Headphone Output T R S Tip Left Ri...

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