Architects’ and Engineers’ Speciﬁcations

The closer the mic is to your mouth, the bassier is the tone. Adjust the position for the sound you prefer. If you hear breath pops, move the mic farther to the side of your mouth (Fig. 4). Tighten the thumbscrew.

Fig. 4

Adjust mic position to prevent breath pops.

Once you’ve adjusted the headset, it should remain in that position – no further adjustments are needed.

When using the mic for aerobics, you’ll need to keep the cable in place. To do this, attach the cable to the clothes clip (included), and clip it to the back of your shirt. As shown in Fig. 5, be sure that the cable droops BELOW the clip. That way, sweat drips off the cable instead of into your transmitter.

Additional clothing clips can be ordered from Crown’s Parts Department.

How to connect the CM-312AE to a wireless trans- mitter

1.Solder on a connector that mates with your trans- mitter. Technical Bulletin #3 (included) shows the correct wiring for various transmitters.

2.Plug in the cable. Adjust the trim pot on the trans- mitter input to prevent distortion.

Architects’ and Engineers’ Speciﬁcations

The microphone shall be the Crown Model CM-312AE or equivalent. The microphone shall be a headworn hypercardioid type of electret-condenser design. The microphone shall exhibit excellent off-axis response and gain-before-feedback. The microphone shall have an adjustable headband, adjustable boom with locking thumbscrew, and foam pop ﬁlter.

The microphone shall have a 45-inch (1.14-m), permanently attached, two-conductor shielded unter- minated cable that can be connected to a transmitter. Powering shall be 3–9V from the transmitter.

Nominal open-circuit sensitivity shall be 2.9 mV/Pa. Maximum SPL shall be 148 dB SPL for 3% THD. Equivalent noise shall be 31 dBA nominal. Frequency response shall be 50 Hz to 17,000 Hz with a uniform off-axis response, over 20 dB down at the rear nulls. The Crown model CM-312AE is speciﬁed.

Fig. 6

Dimensions

CM-312AE

Warranty

Crown professional microphones are guaranteed against malfunction for a period of three years from date of original purchase. Please refer to the enclosed full warranty statement for more detail.

Service

If the microphone does not function properly, check that it is aimed correctly and is connected as de- scribed in this datasheet.

If you determine that the microphone product is defec- tive, return the complete product in its original pack- aging to Crown Factory Service, 1718 W. Mishawaka

Road, Elkhart, IN 46517-9439.A Service Return

Authorization (SRA) is required for product being returned for service. An SRA can be completed on line at: www.crownaudio.com/support/factserv.htm.

For further assistance or technical support call 800-

342-6939.

Fig. 5 Let the cable droop below the clip to shed moisture.

Crown International, Inc. 1718 W. Mishawka Rd. Elkhart, IN 46517-9439 TEL: 574-294-8000 FAX: 574-294-8FAX www.crownaudio.com

© 2008 Crown Audio®, Inc. Speciﬁcations subject to change without prior notice. Latest information available at www.crownaudio.com. Crown and Crown Audio are registered trademarks of Crown International.

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CM-312AE specifications

The Crown Audio CM-312AE is a high-performance, professional-grade power amplifier specifically designed for live sound reinforcement and studio applications. Known for its reliability, versatility, and superior sound quality, the CM-312AE has become a staple in many sound systems across various settings, including concerts, events, and installations.

One of the main features of the CM-312AE is its lightweight design, achieved through a switching power supply and Class D amplification technology. This not only reduces the overall weight of the amplifier, making it easier to transport, but also enhances energy efficiency. With a power output of 300 watts per channel at 4 ohms and 180 watts per channel at 8 ohms, the CM-312AE delivers ample power for driving speakers in various configurations, ensuring clarity and punch even at high volumes.

The CM-312AE is equipped with advanced protection circuitry that prevents overheating, short circuits, and overloading. This feature is particularly valuable for live sound applications where equipment must withstand prolonged usage and harsh conditions. Additionally, an integrated cooling system with a variable-speed fan ensures optimal temperature management, allowing the amplifier to maintain performance without risk of damage.

Versatility is another hallmark of the CM-312AE. It includes multiple input options, including XLR and 1/4-inch TRS connectors, making it compatible with a wide range of audio sources. The amplifier also features a user-friendly interface with adjustable gain controls, allowing sound engineers to fine-tune the output for different environments and requirements.

In terms of sound quality, the CM-312AE offers a flat frequency response and low total harmonic distortion, which results in natural, high-fidelity audio reproduction. This makes it suitable for various applications, including music performances, public address, and multimedia presentations. Furthermore, the amplifier employs advanced signal processing technologies to enhance audio performance, reduce noise, and improve dynamics.

The rugged build quality of the Crown CM-312AE ensures durability and longevity, making it ideal for both touring and stationary setups. Its sleek design allows for easy rack mounting, ensuring that it can fit seamlessly into any professional audio system.

In summary, the Crown Audio CM-312AE combines lightweight portability, robust power output, and advanced protection features, all while delivering exceptional sound quality. Its versatility and durability make it a top choice for professionals in the audio industry, capable of meeting the demands of both live performances and studio recordings.