AKG Acoustics C747 User Manual

C 747

Condenser Microphone

Description

The AKG Model C 747 gradient condenser microphone
uses a short section interference tube to enhance its
directional characteristics, making it an excellent choice for
unobtrusive speech applications when mounted on a podium
or lectern, or for teleconferencing activities. The microphone
is about the size of a ballpoint pen and the mini-gooseneck
extension facilitates adjustment and height. The finish is dark
gray matte. Frequency response extends from 30 Hz to 18
kHz, and polar response is very uniform. The microphone
can handle sound pressure levels of 133 dB with only 1%
THD and operates with phantom powering over the standard
ranges from 12 to 48 volts.

Features

• Slim profile for unobtrusive podium
mounting

• Extended low and high frequency
response

• Hypercardioid pattern for
excellent off-axis rejection

• High sensitivity (8.5 mV/Pa)

• High acoustic level capability
(133 dB-SPL for 1.0% THD)

Specifications

Transducer Principle: Pre-polarized condenser

Frequency Range: 30–18,000 Hz

Polar Pattern: Hypercardioid

Sensitivity at 1,000 Hz: 8.5 mV/ Pa =^-42 dBV

Equivalent Noise Level: 21 dB-A

Sound Pressure Level for 1% THD: 133 dB

S/N Ratio (A-weighted): 73 dB

Electr. Impedance: ≤ 400 ohms

Load Impedance: > 1,500 ohms

Power Requirement: 9-52 volts phantom powering

Connector: 3-pin XLR type

Cable Length: 10 ft. (3 m)

Finish: Dark gray matte

Size: Dia 0.35 in. (9 mm),

Length 5.4 in. (137 mm)

Net/Shipping Weight: .9 oz. (25 g)/26.5 oz. (750 g)

Included Accessories: H 47 Shock mount/adapter

W 70 Windscreen,
MSH 70 Short gooseneck,
SA 47 Swivel stand adapter,
SA 80 Clamp, SHZ 80 screw link

Optional Accessories: ST 45, ST 46 Table stands

MSH 80 Long gooseneck;
B 18 E Battery supply
MF-DA Mounting flange

Microphones · Headphones · Wireless Microphones · Wireless Headphones · Headsets · Electroacoustical Components

Limited Warranty

Valid only in the United States. AKG Acoustics warrants AKG products against defects in material
or workmanship for a period of two years from the date of original purchase for use, and agrees to
repair or, at our option, replace any defective unit without charge for either parts or labor. Important:
This warranty does not cover damage resulting from accident, misuse or abuse, lack of reasonable
care, the affixing of any attachment not provided with the product, loss of parts or connecting the
product to any but the specified receptacles. This warranty is void unless service or repairs are
performed by an authorized service center. No responsibility is assumed for any special, incidental

or consequential damages. However, the limitation of any right or remedy shall not be effective
where such is prohibited or restricted by law. Simply take or ship your AKG product prepaid to our
service department. Be sure to include your sales slip as proof of purchase date. (We will not repair
transit damage under the no-charge terms of this warranty.) Note: No other warranty, written or oral
is authorized by AKG Acoustics, Inc. This warranty gives you specific legal rights, and you may also
have other rights which vary from state to state. Some states do not allow the exclusion or
limitation of incidental or consequential damages or limitation on how long an implied warranty
lasts, so the above exclusions and limitation may not apply to you.

Specifications subject to change without notice.

AKG Acoustics GmbH

Lemböckgasse 21–25, P.O.B. 158, A-1230
Vienna/AUSTRIA
Tel: [phone]*, Fax: [phone]
Internet: http://www.akg.com

AKG Acoustics; A Division of Harman Pro Germany
Bodenseestraße 228, D-81243 München/GERMANY
Tel: [phone], Fax: [phone]

Arbiter Pro Audio

Wilberforce Road, London NW9 6AX/ENGLAND
Tel: [phone], Fax: [phone]

AKG ACOUSTICS, U.S.

914 Airpark Center Drive
Nashville, TN 37217, U.S.A.
Tel: [phone], Fax: [phone]

Studer Japan Ltd.

2-43-7, Uehara, Shibuya-ku, Tokyo 151-0064/JAPAN
Tel: [phone], Fax: [phone]

Erikson Pro Audio

620 McCaffrey, St-Laurent, Quebec, H4T 1N1, CANADA
Tel: [phone], Fax: [phone]
Internet: www.jam-ind.com/eriksonpro

AKG is constantly improving and modifying its products, therefore, specifications are subject to change without notice.

The microphone shall be a directional condenser type utilizing a
combination of gradient and interference actions to produce a well
defined hypercardioid polar pattern.

The microphone shall be no larger in diameter than 0.35 in.
(9 mm), and the finish shall be matte black. On-axis frequency
response shall be maintained within the range of 30 Hz to 18 kHz,
as measured at 1 meter. Microphone sensitivity shall be at least

8.5 mV/Pa, and the self A-weighted noise level of the microphone
shall be no higher than 21 dB. The microphone shall operate in a
sound field of 133 dB-SPL with no greater than 1% THD.

The microphone shall operate on phantom powering, covering
the range from 9Vdc to 52Vdc. The microphone shall be the AKG
Acoustics Model C 747.

S

R

R

1

Graphical Data

Architects and Engineers Specifications

DS-C 747

On-axis Frequency Response
(measured at 1 meter)

Polar Response

.35 in. (9 mm)

diameter

5.4 in.

(137 mm)

length

PA 62
PHANTOM POWE
ADAPTER FO
9 TO 52 VOLT
AUSTRIA