Radial Engineering SW8 Owner's Manual
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Radial Engineering SW8 Owner's Manual

Eight channel auto switcher, transformer isolated
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True to the Music
SW8
Owner's Manual
Eight Channel Auto Switcher • Transformer Isolated
Order No. R800 8100
Radial Engineering Ltd.
1638 Kebet Way, Port Coquitlam BC V3C 5W9
tel: 604-942-1001 • fax: 604-942-1010
email: info@radialeng.com • web: www.radialeng.com
www.radialeng.com
Specifi cations and appearance are subject to change without notice.
Copyright © 2007 Radial Engineering Ltd.

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Summary of Contents for Radial Engineering SW8

  • Page 1 Order No. R800 8100 Radial Engineering Ltd. 1638 Kebet Way, Port Coquitlam BC V3C 5W9 tel: 604-942-1001 • fax: 604-942-1010 email: info@radialeng.com • web: www.radialeng.com www.radialeng.com Specifi cations and appearance are subject to change without notice. Copyright © 2007 Radial Engineering Ltd.

  • Page 2: Table Of Contents

    This manual covers installation and operation of the SW8. We recommend that you take a few minutes to read through this manual in order to familiarize yourself with the many innovative features incorporated into the SW8.

  • Page 3: Sw8 Overview

    The Radial SW8 is an eight channel redundant switcher designed primarily for live concerts where backing tracks are used to reinforce the performance. Should the primary playback machine suffer a failure, the SW8 can switch to a Playback B backup machine either automatically, manually, or by remote...

  • Page 4: Features And Functions

    5. LIFT SWITCH - disconnects pin-1 on the XLR output to activate external systems like sirens and strobe lights. further reduce the possibility of ground loop hum. 14. LINK IN & OUT - Used to daisy-chain multiple SW8 units together for larger systems. Rear Panel 15.

  • Page 5: Audio Connections

    Playback A Radial Cable Reference Radial manufactures a range of D-SUB cables that will interface the SW8 with a wide variety of equipment. Available with Radial Torsion or Mogami EZ-ID multi-pair snake cables in your choice of end termination and length.
  • Page 6 The SW8 offers two audio outputs; the line-level DB25 output connector and the front panel mic-level XLR jacks. Which output you choose to use will depend on where the SW8 is set up. For instance, the DB25 output will typically be used at the FOH mix position to feed line-level signals to the console while the XLR outputs would feed mic-level signals to the on-stage mic snake.

  • Page 7: Control Connections

    Remote Switching The FOOT-SW ¼” phone jack on the rear panel allows the SW8 to be controlled with a remote contact closure system or latching footswitch. Closing the circuit connected to the FOOT-SW jack produces the same result as depressing the SELECT A/B switch on the front panel.

  • Page 8: Grounding Options

    Internal Tone Filter The SW8 is equipped with a low pass fi lter that may be inserted into the Tone Track signal path to prevent cross-talk from loud Tone Track signals from bleeding into the program audio. The fi lter is controlled by an internal three position switch that can be accessed through a hole in the top using a small screwdriver or “tweaker”.

  • Page 9: Operation

    4. Connect an appropriate alarm circuit to the CONTACT OUTPUT jack as described in the previous section. 5. While sending the Tone Track signal to the SW8, adjust the THRESHOLD control to fi nd the level where the front panel ALARM LED illuminates.

  • Page 10: Signal Flow Block Diagram

    True to the Music BLOCK DIAGRAM SW8 Specifi cations Input-A & B 1/4” phone: TRS balanced +4dB / unbalanced -10dB D-Sub: DB25 balanced +4dB / unbalanced -10dB Input impedance: 140K ohms typical (without Global PAD) 10k ohms typical (with Global PAD)

  • Page 11: Faq

    Q: What testing procedures are recommended? A: It will greatly depend on the system as a whole. The SW8 can be interfaced in several ways so the best recommendation is to devise your own testing procedure that takes into account all the pieces of the system that will affect playback should one component fail.

  • Page 12: Warranty

    3 YEAR TRANSFERABLE WARRANTY RADIAL ENGINEERING LTD. (“Radial”) warrants this product to be free from defects in material and workman- ship and will remedy any such defects free of charge according to the terms of this warranty. Radial will repair or replace (at its option) any defective component(s) of this product (excluding fi...

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