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 To obtain information in another language about the

use of this product, please contact your local Crown Distributor. If you need assistance locating
your local distributor, please contact Crown at 574-294-8000.

This manual does not include all of the details of design, production, or variations of the equip-
ment. Nor does it cover every possible situation which may arise during installation, operation or
maintenance.

The information provided in this manual was deemed accurate as of the publication date. However,
updates to this information may have occurred. To obtain the latest version of this manual, please
visit the Crown website at www.crownaudio.com.

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 Crown, Crown Audio and Amcron are registered trademarks of Crown

International. Other trademarks are the property of their respective owners.

Some models may be exported under the name Amcron.

®

VCA-MC Series Operation Manual

VCA-MC8

1-VCAP

4-VCAP

135504-5
     5/08

VCA-MC4A

©2008 Crown Audio

®

 Inc., 1718 W. Mishawaka Rd., Elkhart, IN 46517-9439 U.S.A.

Telephone: 574-294-8000

Summary of Contents for 1-VCAP

Page 1: ...on or maintenance The information provided in this manual was deemed accurate as of the publication date However updates to this information may have occurred To obtain the latest version of this manu...

Page 2: ...as been tested and found to comply with the limits for a Class B digital device pursuant to part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interfer...

Page 3: ...Bridge Mono Wiring 9 4 Operation 10 4 1 Operation Using the VCAP Wall Mount Level Control 10 4 1 1 Troubleshooting 11 4 2 Operation UsingYour Own Potentiometer or an External 10 VDC Variable Source 12...

Page 4: ...VCAP Wall Mount Level Control 5 Figure 1 4 4 VCAP Wall Mount Level Control 5 Figure 3 1 Wiring the VCA Level Control to the VCA MC module 7 Figure 3 2 Wiring Your Own Potentiometer 8 Figure 3 3 Exampl...

Page 5: ...nnel 1 VCA2 for channel 2 and so on VCA MC modules can be controlled in one of two ways Optional Crown 1 VCAP or 4 VCAP wall mount level controls An external control voltage of 0 to 10 VDC 1 VCAP See...

Page 6: ...e system to be set at the amplifier 1 2 1 VCAP Level Control Features Provides remote volume control for one or more CTs amplifier channels 1 3 4 VCAP Level Control Features Provides remote volume con...

Page 7: ...ox and the power amplifier allowing some slack on both ends No cable is provided CAT 5 cable will work fine but Crown recom mends using standard twisted pair shielded microphone cable 2 See Figure 3 1...

Page 8: ...iometer as shown in Figure 3 2 Connect one end terminal of the pot to the power supply ground and VCA ground connect the other end terminal to 10 VDC and connect the wiper to the VCA control input of...

Page 9: ...subwoofers all for the same room In this case it is convenient to control all of those channels with the same control Also for correct operation when channels are bridged control inputs for the bridg...

Page 10: ...turn the amplifier attenuator clockwise until the system s volume is at the maxi mum value you want it to operate at Remember to refer to the power rating of the speakers If the sound from your speak...

Page 11: ...Detent 0 is full counterclockwise Dentent 30 is full clockwise Note This table is for refer ence only Actual attenuation may vary 1 dB 4 1 1 Troubleshooting If the amplifier gain does not respond to t...

Page 12: ...e to the input level you just used to set it If the input level from the audio source increases so will the output level of the amplifier The volume limit is not an absolute limiter 6 Turn off the amp...

Page 13: ...ion is 43 3 dB See the CTs Multi Channel Series Operation Manual for attenuation vs detent of the amplifier attenuator Figure 5 1 System Block Diagram This unique design allows the system designer to...

Page 14: ...8 cm Control Voltage 0 to 10VDC between GND and VCA VCA MC8 Pins VCA GND 10V VCA x4 Weight 5 0 oz 142 g Dimensions Gain Module 5 1 2 x 2 1 2 14 0 cm x 6 4 cm Connector Break Out 5 15 16 x 1 1 2 15 cm...

Page 15: ...with the defective unit to an authorized service center to obtain service They will handle the necessary paperwork and repair Remember to transport the unit in the original factory pack A list of auth...

Page 16: ...rmation sheet in the back of this manual 2 Do not ship any accessories manuals cords hardware etc with your unit These items are not needed to service your product We will not be responsible for these...

Page 17: ...yment of Non Warranty Repairs Payment on out of warranty repairs must be received within 30 days of the repair date Units unclaimed after 30 days become the property of Crown Audio Inc If you have any...

Page 18: ...after receipt of the defective product at our authorized service center or our factory All expenses in remedying the defect including surface shipping costs in the United States will be borne by us Yo...

Page 19: ...hase price not including interest insurance closing costs and other finance charges less a reasonable depreciation on the product from the date of original purchase Warranty work can only be performed...

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