Crown MPX-6, SMX-6, AMB-5 installation manual Welcome, Options, Unpacking

IQ Mixer / Multiplexer Hardware Installation

1 Welcome

Thank you for purchasing a Crown IQ mixer/multi- plexer. IQ mixer/multiplexers are intelligent mixers with special signal routing capabilities. Their intelli- gence stems from a powerful onboard microproces- sor which enables them to be controlled and monitored by a Crown IQ System®. Each input and each output can be individually controlled and, with their distributed intelligence™ capability, continue to operate even when an IQ System is not connected.

In addition to two main outputs (one for each chan- nel), each model has a second set of ÷busš outputs which are switched on/off by a relay. This enables many mixer/multiplexers to be connected to a com- mon audio bus without loading it down. They are designed to work as stand-alone units in a small audio system or as modules in a large audio sys- tem.

Three different models are available to serve a wide variety of needs. The MPX-6™ and SMX-6™ models operate as 6x2 mixers. The AMB-5™ can operates as a 5x2 mixer. Multiple units can be connected together to form larger mixers. For example, a MPX-

6and SMX-6can be connected together to form a single 12x2 mixer. They can also be connected as a 6x4 mixer.

The MPX-6is the simplest of the three models. It provides basic mixing capabilities. All control and monitor functions are handled by the IQ System. The MPX-6does not have the automatic mixing capability of the other models because it does not have input sensing.

The SMX-6is more sophisticated because it has sensing ability. A sensing circuit is located at the beginning of each input to sense the input signal level ahead of any signal processing. Similar sen- sors are located at each output. These sensors, along with its onboard intelligence, enable the SMX- 6 to perform many versatile functions like automatic mixing, compression, and automatic level control.

The AMB-5has the same functions as an SMX-6plus it has the ability to sense the ambient sound level and automatically adjust its output level ac- cordingly. In this way it serves as the ultimate automatic level controller. Input 6 is dedicated as the sensing input, leaving five to function normally as a 5x2 mixer. Unlike the SMX-6, signal processing is only available for Channel 1. Channel 2 functions like an MPX-6.

1.1 Options

In a standard IQ System, the IQ components like the mixer/multiplexers are connected to the system via the Crown Bus. The Crown Bus is a serial com- munication loop which carries IQ commands and data. IQ mixer/multiplexers are also able to bypass the Crown Bus and connect (one at a time) directly to a computer (PC compatible or Macintosh®). Once configured, the mixer/multiplexers can be discon- nected and allowed to operate by themselves.

Option 1 allows an AMB-5, MPX-6or SMX-6to con- nect to a host computer and serve as a Crown Bus interface between the computer and other IQ com- ponents. This eliminates the need to purchase a separate IQ interface (IQ-INT) for a small IQ Sys- tem.

Option 4 allows an SMX-6(only) to connect to a Crown Local Net loop. The Crown Local Net is a communication subsystem within an IQ System. Using it, two or more SMX-6scan communicate between themselves to keep track of the total num- ber of open microphones. This information can then be used to prevent feedback when more mics are open.

Note: Options 2-3 are not presently available.

1.2 Unpacking

Please unpack and inspect the unit for any damage that may have occurred during transit. If any dam- age is found, notify the transportation company im- mediately. Only you, the consignee, may initiate a claim with the carrier for damage resulting from shipment. Crown will cooperate fully as needed. Save the shipping carton as evidence of damage for the shipper’s inspection.

Even if the unit arrived in perfect condition, as most do, save all packing materials so you will have them if you ever need to transport the unit. NEVER SHIP THE UNIT WITHOUT THE FACTORY PACK.

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