*AMB-5 / *SMX-6 DATA DATA ENABLE ENABLE IQ Mixer/Multiplexers with Automatic Signal Processing Printed on recycled paper. © 1999 by Crown International, Inc., P.O. Box 1000, Elkhart, Indiana 46515-1000 U.S.A. Telephone: 219-294-8000. The IQ–AMB-5 and IQ–SMX-6 are produced by Crown International, Inc. Trademark Notice: IQ2 ™ is a trademark and Crown ®, IQ System ®, Com-Tech ®, and PZM® are registered trademarks of Crown International, Inc. Other trademarks are the property of their respective owners.
3 YEAR THREE YEAR FULL WARRANTY 3 YEAR WORLDWIDE NORTH AMERICA SUMMARY OF WARRANTY The Crown Audio Division of Crown International, Inc., 1718 West Mishawaka Road, Elkhart, Indiana 46517-4095 U.S.A.
AMB-5 / SMX-6 IQ Mixer/Multiplexer Important Safety Instructions 1) Read these instructions. 2) Keep these instructions. 3) Heed all warnings. 4) Follow all instructions. 5) Do not use this apparatus near water. 6) Clean only with a dry cloth. 7) Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions. 8) Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus that produce heat.
AMB-5 / SMX-6 IQ Mixer/Multiplexer The information furnished in this manual does not include all of the details of design, production, or variations of the equipment. Nor does it cover every possible situation which may arise during installation, operation or maintenance. If you need special assistance beyond the scope of this manual, please contact our Technical Support Group. Crown Audio Technical Support Group Plant 2 SW, 1718 W. Mishawaka Rd., Elkhart, Indiana 46517 U.S.A.
AMB-5 / SMX-6 IQ Mixer/Multiplexer Quick Install Procedure This procedure is provided for those who are already familiar with Crown’s IQ System® and who would like to install the mixer/multiplexer in the shortest time possible. Less experienced installers or those wishing a full explanation of the installation procedure are encouraged to go to Section 3 where the full installation procedure is described. Prepare the mixer/multiplexer: 1 Set the IQ address switch (Figure 3.
AMB-5 / SMX-6 IQ Mixer/Multiplexer CONTENTS Quick Install Procedure ................................................................. 5 1 Welcome ......................................................................................... 8 1.1 Unpacking .............................................................................. 8 2 Controls, Connectors & Indicators ................................................ 9 3 Hardware Installation ...................................................................
AMB-5 / SMX-6 IQ Mixer/Multiplexer 5.3 Auxiliary Port ......................................................................... 20 6 IQ Audio In Depth ......................................................................... 23 6.1 A Closer Look at Audio Signal Wiring ........................................ 23 6.1.1 6.1.2 6.1.3 6.1.4 6.1.5 6.2 6.3 6.4 6.5 Input ............................................................................... IQ–AMB-5 Ambient Sensing Input ...............................
AMB-5 / SMX-6 IQ Mixer/Multiplexer DSPI DSPI ENABLE ENABLE Figure 1.1 The IQ–AMB-5 and IQ–SMX-6 1 Welcome Thank you for purchasing a Crown® IQ mixer/multiplexer. IQ mixer/multiplexers are intelligent mixers with special signal routing capabilities. Their intelligence stems from a powerful onboard microprocessor which enables them to be controlled by a Crown IQ System®.
AMB-5 / SMX-6 IQ Mixer/Multiplexer 2 Controls, Connectors & Indicators Figure 2.
AMB-5 / SMX-6 IQ Mixer/Multiplexer ODEP ENABLE ENABLE IOC POWER SPI CH1 CH2 ODEP OFF ENABLE IOC POWER SPI CH1 CH2 ODEP OFF ENABLE IOC POWER SPI CH1 CH2 OFF DSPI ODEP ENABLE ENABLE IOC POWER SPI CH1 CH2 ODEP OFF ENABLE IOC CROWN BUS LOOP 2 DSPI CROWN BUS LOOP 1 RS232 POWER SPI CH1 CH2 ODEP OFF ENABLE IOC POWER SPI CH1 CH2 OFF Figure 3.
AMB-5 / SMX-6 IQ Mixer/Multiplexer One of the advantages of connecting directly to a host computer is that a separate IQ interface (IQ–INT-II) is not required. If you plan to configure the unit while it is connected to the Crown Bus, skip ahead to Section 3.2. RS232 is commonly used with IBM PCs and compatibles, and is the communication standard supported by the mixer/multiplexer when used as an interface. Because it uses unbalanced signal wiring, it cannot be used for distances over 50 feet (15.2 m).
AMB-5 / SMX-6 IQ Mixer/Multiplexer Crown Bus loops, 1 and 2, and an IQ–SMX-6 is to be installed into loop 1 and given an address of 114. No other IQ–SMX-6 can be given the same address in loop 1. However, an IQ–SMX-6 in loop 2 can have the same address. Different IQ components in the same Crown Bus loop can have the same address. For example, both an IQ– SMX-6 and an IQ–AMB-5 can use address 114 in the same loop. A valid IQ address is any number from 1 to 250.
AMB-5 / SMX-6 IQ Mixer/Multiplexer 3/16 in (0.48 cm) Figure 3.4 Four-Terminal Removable Barrier Block Plug The following examples show how to connect the mixer/multiplexer to other IQ components on the Crown Bus: Mixer/Multiplexer 1 Mixer/Multiplexer 2 1 2 3 4 1 2 3 4 Figure 3.7 Crown Bus Wiring for RJ-45 Input 4-pin DIN Output 4 1 Cable connectors are numbered as they appear from the front.
AMB-5 / SMX-6 IQ Mixer/Multiplexer 3.3 Connect the Audio Wiring (Step 3) 3.4 Connect Auxiliary Devices (Step 4) IQ mixer/multiplexers have 6 mic/line inputs and 2 stack inputs (Input 6 of the IQ–AMB-5 is dedicated for ambient sensing). Two audio channels feed two main and two auxiliary bus outputs. Three-terminal removable barrier block connectors are provided for the mic/ line inputs and main and bus outputs. RCA-type phono jacks are provided for the stack inputs. See Section 5.
AMB-5 / SMX-6 IQ Mixer/Multiplexer 4 Operation The IQ–AMB-5 and IQ–SMX-6 sensing mixer/multiplexers are IQ components that can be controlled and monitored from a remote location via an IQ System. In addition to basic mixing functions, the IQ–AMB-5 and IQ–SMX-6 sensing mixer/multiplexers offer advanced signal processing and have the capability of mixing audio signals automatically. The IQ–SMX-6 is a 6x2 automatic mixer, with computer controlled input switching and routing capabilities.
AMB-5 / SMX-6 IQ Mixer/Multiplexer output channel) via RCA pin jacks. Each input enters the mix of the respective output channel at unity gain, and without manual or computer input control. These stack inputs allow you to multiply the number of audio inputs by stacking 2, 3, or more units to build a larger mixer. See section 5.1.4 for more information about forming larger mixers. 4.1.
AMB-5 / SMX-6 IQ Mixer/Multiplexer +25 dB in 1/2-dB steps. • Gate Threshold: the input level above which the gate will “open” and below which the gate will “close.” Control range is from –100 to +25 dB in 1/2-dB steps. • Low Set: the gain setting that will be used when the gate is “closed.” Control range is from –100 to +25 dB in 1/2-dB steps. • Delay: determines how long the gate will stay open after the incoming signal drops below the Threshold. Control range is from 0.2 to 30 seconds. 4.2.
AMB-5 / SMX-6 IQ Mixer/Multiplexer If the level audibly drops each time the gate opens, try a lower value for Idle Gain. Idle gain should never be set to a value greater than Max Gain. Control range is from –100 to +25 in 1/2dB steps. • Reaction Time: the time in seconds to adjust gain 10 dB toward the necessary gain structure to obtain the desired average output level. Control range is from 0.2, to 30 seconds.
AMB-5 / SMX-6 IQ Mixer/Multiplexer increase in the ambient signal level above the Threshold setting. A 4:1 Expansion Ratio setting will raise the output gain 1 dB for every 4 dB that the ambient signal increases. Choices are 1:1, 1.5:1, 2:1, 2.5:1, 3:1, 4:1, and 5:1. • Threshold: determines at what ambient sound level the Ambience function will begin to operate. It is the sound pressure level of the ambient sensing input (Input 6).
AMB-5 / SMX-6 IQ Mixer/Multiplexer drive the two current-summing mix buses. The stack inputs also feed into the mix buses. The VCA's derive their control voltages from a multiplexer circuit driven from the microprocessor. The microprocessor uses onboard algos or commands from a host computer to control the VCAs. Levels can be set in 1/2 dB increments from 25 dB gain to 100 dB attenuation (which is considered “off”). 5.1.
AMB-5 / SMX-6 IQ Mixer/Multiplexer Figure 5.
AMB-5 / SMX-6 IQ Mixer/Multiplexer Figure 5.
AMB-5 / SMX-6 IQ Mixer/Multiplexer 6 IQ Audio In Depth This section provides additional information about Crown’s IQ System with special guides to aid in the installation and use of the IQ–AMB-5/IQ–SMX-6. For more information about any of these topics, contact the Crown Technical Support Group. 6.1 A Closer Look at Audio Signal Wiring 6.1.1 Input Three-terminal removable barrier block connectors are provided for the audio inputs. Each input has an input selector switch.
AMB-5 / SMX-6 IQ Mixer/Multiplexer Balanced sources should be wired as shown in Figure 6.3. Notice that the shield is not connected to the chassis ground of the source if the source is also connected to the AC ground (that is, it has a grounded AC plug). This prevents unwanted ground loops.
AMB-5 / SMX-6 IQ Mixer/Multiplexer Each bus output can drive any number of inputs within this impedance range. AUDIO OUT + Notice that the shield is not connected to the output ground terminal if the load is connected to AC ground. This prevents unwanted ground loops. Unbalanced output wiring is shown next. STACK IN 1 MAIN – + Both main and bus outputs are wired the same way. Balanced output wiring is shown in Figure 6.7. BUS – Figure 6.
AMB-5 / SMX-6 IQ Mixer/Multiplexer The correct way to wire stacked units is shown below: First Unit AUDIO OUT 2 AUDIO OUT STACK IN MAIN BUS To signal source STACK IN 1 MAIN BUS First Unit + – + – + – + – AUDIO IN -5 2 0 ADD 25 5 FOR MIC 10 -10 -12 15 21 AUDIO IN -5 1 + 3-pin output connector 0 ADD 25 5 FOR MIC 10 -10 -12 15 21 – M L P + M L P – (–) No connection 2-conductor shielded cable Connect ground ( ) from output to phone plug shield Do NOT tie ground terminals
AMB-5 / SMX-6 IQ Mixer/Multiplexer 6.2 Using the AUX Port There are many possible uses for the AUX output. For example, it can be used to turn on auxiliary cooling fans. To do this the AUX connector might be used to close a relay. The relay would then turn the fans on or off. This is shown in Figure 6.14. When the Aux port is turned on by the IQ System it provides 10 VDC across pins 3 (+) and 1 (ground). An internal 1.5 K ohm resistor limits the current to a maximum of 16 mA.
AMB-5 / SMX-6 IQ Mixer/Multiplexer 6.3 The Mixer/Multiplexer as a 1-Loop IQ Interface The mixer/multiplexer can serve a an IQ interface between a host computer and a single Crown Bus loop for other IQ–AMB-5/IQ–SMX-6 units only. This can eliminate the need for an external IQ Interface (IQ-INTII) in a small system. The mixer/multiplexer connects directly to the host computer via the DB9 serial connector. Switches accessed through the side of the chassis are used to select the parity and baud rate.
AMB-5 / SMX-6 IQ Mixer/Multiplexer 6.5 A Closer Look at Crown Bus Wiring The Crown Bus is a serial communication loop designed to transmit IQ commands and data. As implemented in the IQ mixer/multiplexer, it is a 20 mA current loop operating at a baud rate of 38.4 K. The Crown Bus connection can use inexpensive twisted-pair wiring (shielded or unshielded) and it must be unbroken.
AMB-5 / SMX-6 IQ Mixer/Multiplexer 7 IQ Address Tables This section contains lookup tables for every valid IQ address. The valid addresses are 1 to 250. Do not use an address number higher than 250! Addresses above 250 are reserved for special system use.
AMB-5 / SMX-6 IQ Mixer/Multiplexer IQ Address Switch IQ Address 1 2 3 4 5 6 7 126 127 128 129 130 131 132 133 134 135 136 137 138 139 OFF ON ON ON ON ON ON OFF 140 141 142 143 144 145 146 147 148 149 150 151 OFF OFF ON ON OFF OFF OFF ON 152 153 154 OFF OFF OFF ON ON OFF OFF ON 155 156 157 158 159 160 161 162 163 IQ Address Switch IQ 8 Address ON ON ON ON ON ON ON OFF OFF OFF OFF OFF OFF OFF OFF ON ON OFF OFF OFF OFF OFF OFF ON OFF ON OFF OFF OFF OFF OFF ON ON ON OFF OFF OFF OFF OFF ON OF
AMB-5 / SMX-6 IQ Mixer/Multiplexer 8 Factory Service Always use the original factory pack to transport the unit. To obtain factory service, fill out the service information page found in the back of this manual and send it along with your proof of purchase and the defective unit to the Crown factory. For warranty service, we will pay for ground shipping both ways in the United States. Contact Crown Factory Service or Technical Support to obtain prepaid shipping labels prior to sending the unit.
AMB-5 / SMX-6 IQ Mixer/Multiplexer Crown Factory Service Information Shipping Address: Crown International, Inc., Factory Service, Plant 2 SW, 1718 W. Mishawaka Rd.
