Description

The AT915QMRx/C is a wide-range condenser microphone with a cardioid polar pattern. It is designed for quality sound reinforce- ment, professional recording, television, and other demanding sound pickup applications. The small-diameter alternating gooseneck design permits highly flexible positioning while maintain- ing a smooth, well-contoured appearance. Its adjustable-length design allows for the ultimate in positioning flexibility.

The microphone features an XLRM-type connector insert at its base, allowing it to be plugged directly into an XLRF-type panel jack or microphone cable. The integral power module can be powered from any external 9V to 52V DC phantom power supply. A recessed switch in the power module permits choice of flat response or low-frequency roll-off to help control undesired ambient noise.

Four additional interchangeable elements are available to permit selection of angle of acceptance from 90° to 360°.

Audio-Technica design engineers have utilized the newest low-mass diaphragm technology in the quest for superior performance. The permanent charge is now on the fixed back plate, rather than the moving element. With A-T fixed-charge “back plate” construction, a gold-vaporized diaphragm just 2 microns thick (about .000079") can be used. This considerably reduces moving mass, thus improving frequency response and transient response while reducing distortion.

The microphone is enclosed in a rugged housing with a low-reflectance black finish.

While a modern condenser microphone is not unduly sensitive to the environment, tempera- ture extremes can be harmful. Exposure to high temperature can result in gradual and permanent reduction of the output level. Avoid leaving the microphone in the open sun or in areas where temperatures exceed 110° F (43° C) for long periods of time. Extremely high humidity should also be avoided.

Architects and Engineers Specifications

The microphone shall be a fixed-charge condenser with a cardioid polar pattern and a frequency response of 40 Hz to 20,000 Hz. It shall be capable of accepting optional interchangeable elements for additional polar patterns. It shall operate from an external 9V to 52V DC phantom power source. Nominal open-circuit output voltage shall be 7.0 mV at 1 kHz, 1 Pascal. Output shall be low impedance balanced (200 ohms).

The microphone shall have a self-contained power module with an XLRM-type connector insert at the base for direct connection to a mating XLRF-type panel jack or cable connector. The power module shall include a switch for low-frequency roll-off. A locking ring/isolator shall be supplied.

The microphone shall be a small-diameter alternating gooseneck design, with an overall length adjustable from 15.83" (402.0 mm) to 18.39" (467.0 mm). Head diameter shall be 0.48" (12.2 mm). The microphone weight shall be 4.2 oz (120 grams). Finish shall be low-reflectance black.

The Audio-Technica AT915QMRx/C is specified.

AT915QMRx/C

Cardioid

Miniature

Condenser Adjustable- length Gooseneck Quick-mount Microphone

Installation and Operation

Output is low impedance balanced. The output connector mates with XLRF-type cable connectors. The balanced signal appears across Pins 2 and 3, while the ground (shield) connection is Pin 1. Output is phased so that positive acoustic pressure produces positive voltage at Pin 2, in accordance with industry convention.

The microphone can be secured to a podium or desktop with the included locking ring/isolator. Rubber-insulated feet attenuate noise, shock and vibration transmitted through the mounting surface. A nylon compression bushing utilizes two set screws to hold the microphone securely in place. A template is provided on the back of this sheet to aid in installation of the locking ring/isolator.

The provided foam windscreen simply slips over the head of the microphone, effectively reducing wind noise or “popping” when used extra close.

The small-diameter gooseneck is easy to manipulate for proper positioning. Heavily lubri- cated, it operates smoothly and quietly. Should the unit become noisy with prolonged use, apply a light machine oil directly on the gooseneck area affected.

 

Frequency Response (Typical)

 

 

 

 

 

 

 

 

 

 

 

in dB

 

 

 

 

 

 

 

 

10 dB

Response

50

100

200

500

1k

2k

5k

10k

20k

 

 

 

 

Frequency in Hertz

 

 

 

 

 

LEGEND

12" or more on axis (flat)

 

Roll-off

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Audio-Technica AT915QMRX/C specifications Description, Architects and Engineers Specifications, Installation and Operation
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AT915QMRX/C specifications

The Audio-Technica AT915QMRX/C is a professional-grade lavalier microphone designed for communication and broadcasting applications. It is particularly well-suited for use in theaters, interviews, presentations, and film production, providing exceptional audio quality in a compact, unobtrusive package.

One of the standout features of the AT915QMRX/C is its high-quality condenser capsule. This microphone is engineered to capture sound with remarkable detail and clarity, making it ideal for capturing vocals and spoken dialogue. The wide frequency response, ranging from 20 Hz to 20 kHz, ensures that it can accurately reproduce both low and high-frequency sounds, providing a rich, full-bodied audio experience.

In terms of design, the AT915QMRX/C boasts a low-profile design that makes it easy to conceal under clothing or in hair, which is essential for presenters who want to minimize visible distractions. The microphone includes a sturdy windscreen that helps reduce plosive sounds and wind noise, allowing for clean, uninterrupted audio capture in various environments.

The microphone is equipped with a rugged cable that measures 1.2 meters, providing ample length for most applications while reducing the risk of tangling. It has a detachable connection system that allows for easy cable replacement or integration with different wireless transmitters, enhancing versatility and reliability for professionals on the go.

The AT915QMRX/C features a high sensitivity rating, enabling it to pick up soft-spoken words while still handling louder sources without distortion. Its low self-noise ensures that even quiet sounds are captured with clarity, making it a preferred choice for recording dialogue in quiet settings.

Another significant technology behind the AT915QMRX/C is its high dynamic range, which allows the microphone to adapt to different sound levels, capturing both soft whispers and louder expressions with ease. This adaptability is crucial in dynamic environments where sound levels can fluctuate unexpectedly.

Overall, the Audio-Technica AT915QMRX/C is designed to meet the demands of professionals looking for a reliable, high-quality lavalier microphone. With its excellent audio performance, discreet design, and highly adaptable connectivity options, it stands out as a top choice for anyone needing a dependable solution for capturing high-fidelity sound in a variety of settings.
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