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VCA-MC Series

 Amplifier Accessories

Operation Manual

We recommend that accessories requiring service be returned with the product in which 
they are installed. 

Warranty is only valid within the country in which the product was pur-

chased. 

When sending in the amplifier and accessory, please refer to the amplifier service 

section for more information.  If you choose to have only the accessory serviced, please 
follow instructions below

7.1 International and Canada Service

Service may be obtained from an authorized service center. (Contact your local Crown/
Amcron representative or our office for a list of authorized service centers.) To obtain ser-
vice, simply present the bill of sale as proof of purchase along with the defective unit to an 
authorized service center. They will handle the necessary paperwork and repair.

Remember to transport your unit in the original factory pack. 

7.2 US Service

Service may be obtained in one of two ways: from an authorized service center or from the 
factory. You may choose either. It is important that you have your copy of the bill of sale as 
your proof of purchase.

7.2.1 Service at a US Service Center

This method usually saves the most time and effort. Simply present your bill of sale along 
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 authorized service centers in your area can be obtained from Crown Factory 
Service, or online from http://www.crownaudio.com/support/servcent.htm.

7.2.2 Factory Service

Crown accepts no responsibility for non-serviceable product that is sent to us for factory 
repair. It is the owner’s responsibility to ensure that their product is serviceable prior to 
sending it to the factory. Serviceable product list is available at http://crownweb.
crownintl.com/crownrma/. For more information, please contact us direct.

A Service Return Authorization (SRA) is required for product being sent to the factory for 
repair. An SRA can be completed online at www.crownaudio.com/support/factserv.htm. If 
you do not have access to the web, please call Crown’s Customer Service at 574.294.8200 
or 800.342.6939 extension 8205.

For warranty service, we will pay for ground shipping both ways in the United States. Con-
tact Crown Customer Service to obtain prepaid shipping labels prior to sending the unit. 
Or, if you prefer, you may prepay the cost of shipping, and Crown will reimburse you. Send 
copies of the shipping receipts to Crown to receive reimbursement. 

Your repaired unit will be returned via UPS ground. Please contact us if other arrange-
ments are required.

7 Service

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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