Wisdom Wands SC-1 owner manual Channel Low Woofer Output, Channel Subwoofer Output

Page 15

Using single-ended amplifiers

Using single-ended amplifiers

37 Channel Low (Woofer) Output

These seven balanced audio outputs carry the room-corrected “low pass” portion of the audio spectrum, and must be connected to the amplifiers that drive the woofer sections of the loudspeakers.

The pin assignments of this XLR-type male output connector are:

Pin 1: Chassis ground

12 Pin 2: Signal + (non-inverting)

3Pin 3: Signal – (inverting)

Connector ground lug: chassis ground

These pin assignments are consistent with the standards adopted by the Audio Engineering Society, and are used with the purpose-designed SA- series power amplifiers from Wisdom Audio. If you elect to use a different amplifier for your woofers, please refer to the operating manual of your power amplifier to verify that the pin assignments of its input connectors correspond to your Wisdom Audio SC-1. If not, wire the cables so that the appropriate output pin connects to the equivalent input pin, in order to preserve the polarity of the musical signal.

If your power amplifier does not have balanced inputs, the adapter used to convert from balanced to single-ended must “float” Pin 3 (the inverted signal). This can easily be checked with an ohmmeter: the impedance be- tween Pin 3 and either the center pin or the shield skirt on the RCA should be infinite. Tying the output of Pin 3 to ground (as some adapters do) will compromise the performance of the SC-1. Should you need them, prop- erly wired adapters are available from Wisdom Audio for an additional charge.

43 Channel Subwoofer Output

These three balanced audio outputs carry the room-corrected sub- woofer outputs, and must be connected to the amplifiers that drive the subwoofer(s) in the system.

The pin assignments of this XLR-type male output connector are:

Pin 1: Chassis ground

12 Pin 2: Signal + (non-inverting)

3Pin 3: Signal – (inverting)

Connector ground lug: chassis ground

These pin assignments are consistent with the standards adopted by the Audio Engineering Society. Refer to the operating manual of your power amplifier to verify that the pin assignments of its input connectors cor- respond to your Wisdom Audio SC-1. If not, wire the cables so that the appropriate output pin connects to the equivalent input pin, in order to preserve the polarity of the musical signal.

If your power amplifier does not have balanced inputs, the adapter used to convert from balanced to single-ended must “float” Pin 3 (the inverted signal). This can easily be checked with an ohmmeter: the impedance be- tween Pin 3 and either the center pin or the shield skirt on the RCA should be infinite. Tying the output of Pin 3 to ground (as some adapters do) will compromise the performance of the SC-1. Should you need them, prop-

15

Image 15
Contents Wisdom Audio System Controller SC-1 Risk of Electric Shock Do not Open Important Safety Instructions Table of Contents Care & Maintenance North American Warranty Unpacking the SC-1 Placement Considerations Operating Voltage Special Design Features System-Specific EQ Power Switch and Indicator Setup Memory LED IndicatorsFront Panel Setup Calibration Selector Switch Channel Inputs Rear PanelChannel High Planar Output Channel Subwoofer Output Channel Low Woofer OutputUSB Port RS232 Interface12v Trigger In and Out AC Mains Input, Switch and Fuse Assembly Page Introduction to Room Acoustics Surround channel geometry Stable, 3-dimensional stereo imagingSmooth, consistent bass Center channel heightSubwoofer Placement Room Treatment Suppliers of Acoustic Treatments Books on AcousticsGetting Ready to Calibrate Before Calibration During Calibration Wisdom System Configuration Speaker Selection Speaker Selection screen High Crossover Volume Trim Sample only 85 90 = Audyssey MultEQ Pro MultEQ Pro Welcome screen Job Information Options/Microphone Selection Room Dimensions Measurement Measuring additional positions Detection Results Page Target Sound Options Disconnect the microphone Save Results Page Calibration Completed Care & Maintenance North American Warranty Obtaining Service Recommended minimum load impedance SpecificationsDimensions Page Is a registered trademark of Wisdom Audio, Inc