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Spacebar

Stereo Microphone Positioning System

User Manual, Revision C, October 7, 2010

Stereo Spacebar User Manual Revision C

Page 1 of 13

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Summary of Contents for Spacebar

Page 1: ...Spacebar Stereo Microphone Positioning System User Manual Revision C October 7 2010 Stereo Spacebar User Manual Revision C Page 1 of 13 ...

Page 2: ...o precisely set microphones in standard stereo configurations i e XY ORTF NOS and AB 50cm the Spacebar allows for exact settings through the entire continuum of angle and spacing This allows the user to adjust the stereo microphone array and tailor the pickup field to suit virtually any recording environment We highly recommend The Stereophonic Zoom by Michael Williams a technical paper that provi...

Page 3: ...clamp horizontal bar and microphone holders fig 1 Spacebar component diagram Stereo Spacebar User Manual Revision C Page 3 of 13 STAND CLAMP LOCKING HANDLE POSITION LOCK NUT STAND CLAMP HORIZONTAL BAR ANGLE ADJUST LOCK SCREW LARGE MIC HOLDER SMALL MIC HOLDER JAM NUT KEYED RING ...

Page 4: ... be adjusted with 5mm precision by using the ruler on the front of the horizontal bar Note that these rulers are for reference as the actual capsule spacing will need to be determined with a measuring tape or ruler The SB 30 and SB 66 are both supplied with two microphone holder assemblies and an additional tall microphone holder The taller microphone holder body can be used to raise one microphon...

Page 5: ...ill snap back and engage in the new position fig 3 Spacebar vertical angle adjustment Setup Procedure 1 On the mic holder assemblies loosen the position locking nut and the angle locking screw and set the angle to 0 Tighten both again 2 Thread on the microphone clips for your desired microphones but do not tighten all the way Put the microphones in the clips and while looking down on the Spacebar ...

Page 6: ...e keyed ring and tighten the angle lock screw 4 Place the microphone holder assembly into the slot on the horizontal bar and install the Position Lock Screw to secure the assembly Changing the horizontal bar length 1 Refer to fig 5 exploded parts diagram later in this manual 2 To remove the horizontal bar loosen the 8 32 set screw H407 with a 5 64 hex wrench Turn the set screw counter clock wise a...

Page 7: ...Bar optional 1 2 E404 KEYED RING 2 3 E403 Mic Holder Large 1 4 H432 10 32 x 1 4 SK CP SS 2 5 H510 Knob Black 5 8 2 6 E402 Mic Holder Small 1 7 E405 24mm Nut 10 32 Thread 2 8 E400 Round Stand Clamp 1 9 H407 8 32 x 3 8 Set Screw Pilot Point 1 10 H512 Adjustable Handle 10 32 x 78 stud 1 11 H520 Round Pin 1 16 x 3 2 12 H514 5 8 27 Threaded Boss 2 13 H436 10 32 x 7 8 FL SC SS 4 14 H459 10 Flat Washer B...

Page 8: ...m bar can be used 2 The SB CMB is mounted to the horizontal bar with two 1 4 20 x 1 3 4 socket head cap screws Use the 3 16 hex wrench included with the SB CMB kit to tighten these screws 3 The 24mm thumb nut clamps the mic holder bar in place Loosening this nut allows the mic holder front to back position to be adjusted from 3cm to 13 5cm fig 6 SB CMB assembly Stereo Spacebar User Manual Revision...

Page 9: ...E427 Center Mount Bridge 1 2 E426 Center Mount Mic Holder 1 3 H514 5 8 27 Threaded Boss 1 4 H515 5 8 27 24mm Nut 1 5 E405 24mm Nut 10 32 Thread 1 6 H494 1 4 X 1 Spacer 252 ID 1 2 OD Black Aluminum 2 7 H446 10 32 x 3 4 Flat Socket Head Cap Screw 2 8 H489 1 4 20 X 1 3 4 Socket Head Cap Screw Stainless Steel 2 9 H493 1 4 20 Flat Washer Stainless Steel 2 Grace Part ...

Page 10: ...sures that there is no way that the Spacebar assembly can become detached from the cable and fall The Hanging Adapter assembly also comes with two monofilament yokes These yokes are used to steer the hanging microphone array for positioning and aiming the microphones for optimal sound pickup There are two different length yokes included One for use with the 30cm Spacebar and one for use with the 6...

Page 11: ...ing Adapter Monofilament Yoke Stereo Spacebar User Manual Revision C Page 11 of 13 4 CONDUCTOR MIC CABLE STEREO SPLICE 2 CONDUCTOR MIC CABLE CABLE STRAIN RELIEF CLAMP LEFT RIGHT MONOFILAMENT LINE SWIVEL TO ANCHOR POINT TO SPACEBAR ENDS SHRINK TUBING ...

Page 12: ...ead the wire tube assembly into the stand mount hole on the Spacebar 5 Establish how much wire loop will be needed for the wires to reach the microphones and then tighten the thumb screw so that it binds into the wire insulation This will secure the wire and keep it from slipping back through the wire tube 6 Install the 6 32 x 3 8 button head screws in the ends of the bar leaving about 1 16 of thr...

Page 13: ...tion Date Initials A Initial release 01 30 09 MBG B Changed wording in Changing horizontal bar length Added SB CMB instructions 10 03 09 MBG C Added SB HB to manual 08 09 10 EDG Stereo Spacebar User Manual Revision C Page 13 of 13 ...

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