Crown Audio MA-24X6, MA-36X12 Options PIP Modules, IQ-PIP-USP2 Adapter, Input Ground Lift Switch

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Macro-Tech MA-24X6 & 36X12 Power Amplifiers

4 Advanced Features

and Options

4.3 Options

4.3.1 PIP Modules

Versatile PIP (Programmable Input Processor) modules provide flexible expansion features that can be added to customize the amplifier. PIP modules plug into the connector inside the back panel of the amplifier.

PIP modules are available with a features rang- ing from error-driven compressor/limiters to IQ control. Visit the Crown website at www.crownaudio.com, or contact Crown Tech- nical Support, for descriptions of available PIP modules.

4.3.2 IQ-PIP-USP2 Adapter

The IQ-PIP-USP2 Adapter allows the amplifier to accept the Crown IQ-PIP-USP2 module, which offers remote control and monitoring via Crown’s Smart Amp™ IQ features set, plus a wide range of digital signal processing capabil- ities

Features:

• 24-bit, 48-kHz sampling rate for analog to digital conversion.

• Programmable DSP filters.

• Greater than one-half second of signal delay for each channel.

• Input Signal Compressor/Limiter, Ther- mal Limiter and Clip Eliminator for each channel.

• Presets for easy recall of settings.

• Auto-Standby for reduced energy costs.

• Error reporting.

• Logic input and output.

• Listen Bus allow easy connection to an audio monitoring system.

4.3.3 Input Sensitivity Switch

The Input Sensitivity Switch is located inside the PIP compartment at the back of the ampli- fier (Figure 4.1). It is set at the factory to 0.775 volt for rated output into 8 ohms. It can also be switched to a sensitivity of 1.4 volts, or a fixed voltage gain of 26 dB (4.8 volts for rated out- put). At 26 dB voltage gain, the equivalent input sensitivity is:

Macro-Tech 24X6: 3.1V for Channel 1, and 2.2V for Channel 2.

Macro-Tech 36X12: 4.8V for Channel 1, and 2.6V for Channel 2.

How to change the input sensitivity:

1.Turn off the amplifier and disconnect its power cord from the AC mains power recep- tacle.

2.Remove the PIP module (two screws).

3.Locate the sensitivity switch access hole inside the chassis opening as shown in Fig- ure 4.1. It is located just above the phone jack inputs.

4.Set the switch to the desired position noted on the access hole label. The position toward the front panel sets the sensitivity to 1.4

volts for rated output, the middle position provides a voltage gain of 26 dB, and the position toward the back panel sets the sen- sitivity to 0.775 volt for rated output.

5.Replace the PIP module and restore the power.

4.3.4 Input Ground Lift Switch

The Input Ground Lift switch is located on the rear panel (Figure 4.1) and can provide isola- tion between the input signal ground and the AC ground. It affects only the phone jack inputs and has no effect on the input connectors on the PIP module. Sliding the switch to the left isolates or “lifts” the grounds by placing an impedance between the sleeve of each phone jack and the circuit ground.

When a PIP module is plugged into the ampli- fier, only the noninverted and inverted signal lines are connected in parallel with the corre- sponding lines of the input phone jacks. The signal grounds are not paralleled. For example, XLR pins 2 and 3 are connected in parallel with the tip and ring of the corresponding phone jack. However pin 1 of the XLR is not con- nected in parallel with the sleeve of the phone jack.

Figure 4.1 Input Sensitivity and Ground Lift Switches

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Operation Manual

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Contents MA-24X6 Some models may be exported under the name AmcronMA Series amplifiers require Class 2 output wiring Important Safety InstructionsUse only with a cart, stand, bracket, or table Safety Standard Crown International, IncTCF Technical Certificate No P4300CRI1.IWS Competent Body’s Name and AddressTable of Contents How to Use This Manual FeaturesWelcome Unpack Your Amplifier Install Your Amplifier SetupYou may also stack amps without using a cabi- net Choose Input Wire Balanced Line ConnectorsChoose Output Wire and Con- nectors Distance Wire SizeWire Your System System Wiring a Macro-Tech 36x12 is shownConnect to AC Mains Startup ProcedureTurn up the level of your audio source to an optimum level Precautions OperationFront Panel Controls Indicators Dust Filter Signal/IOC IndicatorOdep Indicator Enable IndicatorPower Cord Reset SwitchesInput Sensitivity Switch Ground Lift SwitchAdvanced Features Options Standby ModeProtection Systems Output Device Emulation Protection OdepCircuit Breakers Transformer Thermal ProtectionCircuit Designs Grounded Bridge Replace the PIP module and restore the power Input Ground Lift SwitchOptions PIP Modules IQ-PIP-USP2 AdapterTroubleshooting Front panel has several helpful indicator LEDs FigureOdep and Signal/IOC Indicator States Theory of Operation Only ONE Channel Shown Specifications Power Draw at Idle DimensionsWeight Output ImpedanceTypical Phase Response AC Power Draw Thermal Dissipation Following equation is used to calculate thermal dissipationAC Power Draw Thermal Dissipation Service Warranty 12/01Worldwide Except USA & Canada Crown Factory Service Information Nature of ProblemThis page intentionally left blank This page intentionally left blank Macro-Tech MA-24X6 & 36X12 Power Amplifiers

MA-36X12, MA-24X6 specifications

Crown Audio is a renowned name in the professional audio industry, celebrated for its commitment to innovation and reliability. Two prominent offerings that stand out in their lineup are the MA-36X12 and MA-24X6 power amplifiers. Designed for versatility and performance, both models cater to a variety of applications, ranging from commercial installations to live sound environments.

The Crown MA-36X12 amplifier delivers 36 channels of robust power, making it an ideal choice for larger systems requiring multiple zones of audio distribution. Its ability to provide a solid output ensures that every speaker in a setup receives the necessary power, maintaining audio clarity and preventing distortion. The MA-36X12 is engineered with a focus on thermal efficiency, utilizing advanced cooling systems to minimize overheating during extended use. Additionally, its compact design allows for easy integration into various environments, whether it be schools, conference centers, or places of worship.

On the other hand, the Crown MA-24X6 amplifier offers 24 channels of audio powerhouse capability. With slightly less power than the MA-36X12, the MA-24X6 is still no slouch; it provides exceptional sound quality, making it suitable for smaller installations or setups requiring fewer channels but high-quality delivery. The MA-24X6 features an intuitive user interface, allowing for seamless adjustments and monitoring of each channel's performance. This amplifier also comes equipped with integrated signal processing capabilities that enable users to fine-tune audio output according to specific acoustics and requirements.

Both models incorporate Crown’s proprietary DriveCore technology, which combines superior sound quality with greater efficiency in amplifying audio signals. This technology minimizes power consumption while maximizing output, ensuring that audio reproduction is both dynamic and clear. Furthermore, Crown’s Smart Amp technology enhances reliability by incorporating self-monitoring functions that provide real-time feedback on performance and status.

In terms of connectivity, the MA-36X12 and MA-24X6 amplifiers come with a variety of inputs and outputs to accommodate diverse audio sources and speaker configurations. Their rugged construction makes them well-suited to endure the rigors of live events and installations, ensuring they deliver consistent performance over time.

In summary, the Crown Audio MA-36X12 and MA-24X6 amplifiers exemplify the brand's dedication to quality and innovation in professional audio solutions. With advanced technologies and versatile features, they respectively cater to both large and small installation needs, making them reliable choices for audio professionals around the globe.
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