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hole and is less likely to damage the table surface.)
5. Using a 1.5 mm (
/
") drill bit, drill three pilot holes for the mounting
1
16
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
hypercardioid polar pattern with a uniform 100° angle of acceptance
and a frequency response of 80 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.
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
/
"- 27 or
5
8
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"): ES915H12]; [381.0 mm
(15.00"): ES915H15]; [457 .2 mm (18.00"): ES915H18]; [533.4 mm
(21.00"): ES915H21] [609.6 mm (24.00"): ES915H24] and a head
diameter of 8.4 mm (0.33"). Weight shall be [125 grams (4.4 oz):
ES915H12]; [130 grams (4.6 oz): ES915H15]; [135 grams (4.8 oz):
ES915H18]; [140 grams (4.9 oz): ES915H21]; [145 grams (5.1 oz):
ES915H24]. Finish shall be low-reflectance black.
The Audio-Technica [ES915H12]; [ES915H15]; [ES915H18]; [ES915H21];
[ES915H24] is specified.
/
"-16 thread. A two-stage foam
3
8
Specifications
Element
Polar pattern
Frequency response
Low frequency roll-off
Open circuit sensitivity
Impedance
Maximum input sound level
Dynamic range (typical)
Signal-to-noise ratio
Phantom power requirements
Switch
Weight
Dimensions
Output connector
Optional interchangeable elements
Audio-Technica case style
Accessories furnished
In the interest of standards development, A.T.U.S. offers full
details on its test methods to other industry
professionals on request.
2
1 Pascal = 10 dynes/cm
= 10 microbars = 94 dB SPL
1
Typical, A-weighted, using Audio Precision System One.
Specifications are subject to change without notice.
frequency response: 80 – 20,000 Hz
50
100
200
500
1k
2k
5k
10k
20k
Frequency in Hertz
LEGEND
12" or more on axis
Roll-off
polar pattern
0˚
330˚
30˚
300˚
60˚
90˚
270˚
120˚
240˚
LEGEND
200 Hz
150˚
210˚
1 kHz
180˚
5 kHz
SCALE IS 5 DECIBELS PER DIVISION
8 kHz
Audio-Technica U.S., Inc., 1221 Commerce Drive, Stow, Ohio 44224
Audio-Technica Limited, Old Lane, Leeds LS11 8AG England
©2010 Audio-Technica U.S., Inc.
audio-technica.com
ES915H
Fixed-charge back plate, permanently
polarized condenser
Hypercardioid
80-20,000 Hz
80 Hz, 18 dB/octave
–40 dB (10.0 mV) re 1V at 1 Pa
250 ohms
138 dB SPL, 1 kHz at 1% T.H.D.
109 dB, 1 kHz at Max SPL
1
65 dB, 1 kHz at 1 Pa
11-52V DC, 4 mA typical
Flat, roll-off
ES915H12: 125 g (4.4 oz)
ES915H15: 130 g (4.6 oz)
ES915H18: 135 g (4.8 oz)
ES915H21: 140 g (4.9 oz)
ES915H24: 145 g (5.1 oz)
ES915H12: 304.8 mm (12.00") long
ES915H15: 381.0 mm (15.00") long
ES915H18: 457.2 mm (18.00") long
ES915H21: 533.4 mm (21.00") long
ES915H24: 609.6 mm (24.00") long,
All: 8.4 mm (0.33") head diameter,
18.9 mm (0.74") base diameter
Integral 3-pin XLRM-type
ESE-O omnidirectional (360°)
ESE-C cardioid (120°)
ESE-ML MicroLine
(90°)
®
M26
AT8474 universal isolation mount; AT8473
quick-mount stand adapter;
/
5
8
threaded adapter; AT8109 two-stage foam
windscreen
0.33"
(8.4 mm)
10 dB
0.74"
18.9 mm
253
"-27 to
/
"-16
3
8
0.48"
(12.3 mm)
24.00"
(609.6 mm)
to
12.00"
(304.8 mm)
0001-0116-01
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