Audio-Technica ES915SC Architect’s and Engineer’s Specifications, frequency response 30-20,000 Hz

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ES915SC

hole and is less likely to damage the table surface.)

5.Using a 1.5 mm (1/16") drill bit, drill three pilot holes for the mounting screws. (If mounting below the table surface, be certain NOT to drill pilot holes through the table.)

6.Place the AT8474 mount over the hole and partially tighten the three screws. Then place the microphone in the AT8474 so that the microphone’s power module (base) extends through the AT8474 mount into the hole. Tighten all three screws evenly. For maximum security, the screws should be tight enough to ensure that the microphone is held securely in place and cannot be removed without loosening

the screws.

7.If mounting the AT8474 mount below the surface of the table, slide the rubber trim ring over the microphone (above the table surface) and seat it between the microphone and the sides of the hole for a

finished appearance. (If mounting the AT8474 above the surface of the table, you may also choose to use the trim ring beneath the surface of the table, for added attenuation of noise, shock and vibration.)

8.After installing the microphone, assure maximum shock mount effectiveness by providing some slack in the connecting cable. The cable can be secured to the table with a standard wire clip or cable tie (not included).

Architect’s and Engineer’s Specifications

The microphone shall be a fixed-charge condenser designed for permanent installation or portable applications. It shall have a cardioid polar pattern with a uniform 120° angle of acceptance and a frequency response of 30 Hz to 20,000 Hz. It shall be capable of accepting optional interchangeable elements for additional polar patterns. The microphone shall operate from an external 11V to 52V DC phantom power source. It shall be capable of handling sound input levels up to 138 dB with a dynamic range of 109 dB. Nominal open-circuit output voltage shall be 10.0 mV at 1 V, 1 Pascal. Output shall be low impedance balanced (250 ohms). It shall offer outstanding rejection of radio frequency interference (RFI).

The microphone shall incorporate a self-contained power module with an XLRM-type connector at the base for direct connection to a mating XLRF- type panel jack or cable connector. It shall include a recessed switch to permit choice of flat response or 80 Hz low-frequency roll-off. The microphone shall incorporate an illuminating mute switch in the power module.

The mute switch shall illuminate when the microphone is on. The mute switch shall be quiet in operation with no mechanical clicks or pops and shall always return to the off position (after momentarily turning on to verify microphone connection) when phantom power is restored.

A universal isolation-type shock mount suitable for above or below surface installation shall be supplied for mounting the microphone in a solid surface. It shall be possible to firmly secure the microphone in the mount. The mount shall include appropriate hardware for installation. For alternative mounting and portable applications, the microphone shall be supplied with a stand clamp to permit attaching the microphone directly to a standard 5/8"- 27 or 3/8"-16 thread. A two-stage foam windscreen shall also be included.

The microphone shall be a small-diameter double gooseneck design, with an overall length of [304.8 mm (12.00"): ES915SC12]; [381.0 mm (15.00"): ES915SC15]; [457.2 mm (18.00"): ES915SC18]; [533.4 mm (21.00"): ES915SC21] [609.6 mm (24.00"): ES915SC24] and a head diameter of 8.4 mm (0.33"). Weight shall be [125 grams (4.4 oz): ES915SC12]; [130 grams (4.6 oz): ES915SC15]; [135 grams (4.8 oz): ES915SC18]; [140 grams (4.9 oz): ES915SC21]; [145 grams (5.1 oz): ES915SC24]. Finish shall be low-reflectance black.

The Audio-Technica [ES915SC12]; [ES915SC15]; [ES915SC18]; [ES915SC21]; [ES915SC24] is specified.

Specifications
Element	Fixed-charge back plate, permanently
	polarized condenser
Polar pattern	Cardioid
Frequency response	30-20,000 Hz
Low frequency roll-off	80 Hz, 18 dB/octave
Open circuit sensitivity	–40 dB (10.0 mV) re 1V at 1 Pa
Impedance	250 ohms
Maximum input sound level	138 dB SPL, 1 kHz at 1% T.H.D.
Dynamic range (typical)	109 dB, 1 kHz at Max SPL
Signal-to-noise ratio1	65 dB, 1 kHz at 1 Pa
Phantom power requirements	11-52V DC, 4 mA typical
Switches	Flat, roll-off; mute/on
Weight	ES915SC12: 125 g (4.4 oz)
	ES915SC15: 130 g (4.6 oz)
	ES915SC18: 135 g (4.8 oz)
	ES915SC21: 140 g (4.9 oz)
	ES915SC24: 145 g (5.1 oz)
Dimensions	ES915SC12: 304.8 mm (12.00") long
	ES915SC15: 381.0 mm (15.00") long
	ES915SC18: 457.2 mm (18.00") long
	ES915SC21: 533.4 mm (21.00") long
	ES915SC24: 609.6 mm (24.00") long,
	All: 8.4 mm (0.33") head diameter,
	18.9 mm (0.74") base diameter
Output connector	Integral 3-pin XLRM-type
Optional interchangeable elements	ESE-O omnidirectional (360°)
	ESE-H hypercardioid (100°)
	ESE-ML MicroLine® (90°)
Audio-Technica case style	M26
Accessories furnished	AT8474 universal isolation mount; AT8473
	quick-mount stand adapter; 5/8"-27 to 3/8"-16
	threaded adapter; AT8109 two-stage foam
	windscreen

In the interest of standards development, A.T.U.S. offers full details on its test methods to other industry professionals on request.

1 Pascal = 10 dynes/cm2 = 10 microbars = 94 dB SPL

1Typical, A-weighted, using Audio Precision System One. Specifications are subject to change without notice.

	24.00"
0.48"	(609.6 mm)
	to
(12.3 mm)
	12.00"
	(304.8 mm)

0.33"

(8.4 mm)0.74"

(18.9 mm)

frequency response: 30–20,000 Hz polar pattern

330˚

0˚

in dB

30˚

300˚

60˚

Response

10 dB

270˚

90˚

50

100

200

500

1k

2k

5k

10k

20k

120˚

Frequency in Hertz

240˚

LEGEND

LEGEND

12" or more on axis

Roll-off

210˚

150˚

200 Hz

1 kHz

180˚

5 kHz

SCALE IS 5 DECIBELS PER DIVISION

8 kHz

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Audio-Technica Limited, Old Lane, Leeds LS11 8AG England
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