AMB-5 /SMX-6IQ 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. Slide it to the left (M) for microphone signal levels up to +7 dBu (0 dBu = 0.775 volts). Select the center position (L) for line level signals up to +32 dBu. Slide it to the right (P) to provide 44 VDC to mics requiring phantom power.

Figure 6.1 An Audio Input Section

Each input has a screwdriver-set, calibrated gain con- trol to compensate for different input source levels. The slot on the control shaft points to the gain setting. The settings are labelled for line-level input. Add 25 dB to the scale if the inputs are switched for microphone level signals.

Use a screwdriver to adjust the gain pot so that the input signal level plus gain equals roughly 0 dBu. You will need to know, or estimate, the level of the input

source. Setting the source signal level to approxi- mately 0 dBu will provide 20 dBu of headroom in the input preamp. Some recommended settings are given in Figure 6.2.

Figures 6.3-4 show the normal wiring for balanced and unbalanced inputs. It is also possible to parallel the inputs of multiple units to increase the number of mixer outputs. For example, the inputs of two 6x2 IQ–SMX-6s can be paralleled to create a 6x4 mixer. This technique is described in Section 6.1.5.

Figure 6.3 Balanced Audio Input Wiring

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Pro Audio

Semi-pro or

Dynamic

Condenser

 

Hot

Dynamic

Hot

Close-miked

Close-miked

 

 

 

 

 

equipment

consumer

mic, speech

mic, speech

 

condenser

mic, music

condensor

dynamic

dynamic mic,

 

 

 

 

 

 

equipment

 

 

 

mic, speech

 

mic, music

mic,

kick drum,

 

 

 

 

 

 

 

 

 

 

 

 

 

bass/drums

guitar amp

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

dBm/dBV

+4 dBm

–10 dBV

–75 dBV

–65 dBV

 

–45 dBV

–55 dBV

–25 dBV

–15 dBV

–5 dBV

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

dBu

+4 dBu

–8 dBu

–73 dBu

–83 dBu

 

–43 dBu

–53 dBu

–23 dBu

–13 dBu

–3 dBu

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Suggested

–4 (L)

+8 (L)

+21 (M)

+11 (M)

 

+18 (P)

+21 (M)

–2 (P)

–12 (M)

–12 (M) or

 

 

 

 

Setting

 

+3 (L)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0 dBm = 0.775 VRMS with a 600 ohm load, 0 dBV = 1 VRMS, 0 dBu = 0.775

VRMS

 

 

 

 

 

 

 

 

 

 

Fig. 6.2 Suggested Audio

Input Gain Control Settings

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IQ–AMB-5 / IQ–SMX-6 Reference Manual

 

 

 

 

 

 

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Crown IQAMB-5, IQSMX-6 manual IQ Audio In Depth, Closer Look at Audio Signal Wiring, Input

IQAMB-5, IQSMX-6 specifications

Crown IQSMX-6 and IQAMB-5 are revolutionary products designed for various applications in the electronic and automotive sectors, delivering high performance, reliability, and advanced features. These models showcase Crown's commitment to delivering cutting-edge solutions tailored for modern needs.

The Crown IQSMX-6 is a compact, high-efficiency power module equipped with a variety of features aimed at optimizing performance while minimizing energy consumption. One of its standout characteristics is the integration of advanced thermal management technologies. This module effectively dissipates heat, ensuring stable operation even under demanding conditions. The IQSMX-6 supports a wide input voltage range, making it adaptable for different applications, from consumer electronics to industrial machinery.

In contrast, the IQAMB-5 focuses on advanced analytics and monitoring capabilities. This model utilizes sophisticated algorithms for real-time data processing, allowing users to monitor system performance metrics and identify potential issues before they escalate. The architecture of the IQAMB-5 includes an intuitive user interface that simplifies operation, making it accessible for both skilled technicians and those new to the technology. Additionally, it features robust communication protocols, ensuring seamless integration with existing systems for enhanced interoperability.

Both models leverage Crown's proprietary technology, which includes energy-saving techniques that not only boost efficiency but also contribute to reducing operational costs. Their design emphasizes sustainability, catering to industries seeking environmentally responsible solutions. Furthermore, the compact form factor of the IQSMX-6 and IQAMB-5 enables easy installation in constrained spaces, providing versatility in deployment.

Security is another focal point for both devices. They incorporate advanced cybersecurity measures to protect data integrity and user privacy. This function is vital in today's digital landscape, where threats are ever-evolving, and organizations require reliable systems that prioritize safety.

Overall, the Crown IQSMX-6 and IQAMB-5 stand out as leading-edge solutions that embody Crown's mission to innovate and advance technology. With their distinctive features, state-of-the-art technologies, and commitment to quality, these models are poised to cater to a wide range of industries and applications, helping organizations enhance their operational capabilities while striving for sustainability. Through continuous improvements and adaptability, these products represent the future of efficient, secure, and smart technology.