Audio Technica PRO 47T User manual

PRO 47 T and PRO 47 TL
REMOTE-POWERED
CARDIOID CONDENSER
THREAD-MOUNT GOOSENECK
MICROPHONES
Frequency in Hertz
Response in dB
10 dB
20k
10k
5k
2k
1k
500
200100
50
LEGEND 12" or more on axis
Frequency Response
Audio-Technica design engineers have utilized
the newest low-mass technology in the quest
for superior performance.The charge is now on
the fixed back plate, rather than the moving
element.With the A-T fixed-charge “back plate”
construction, a gold-vaporized diaphragm just
2 microns thick (about 0.000079") can be
used. This reduces moving mass substantially,
improving frequency response and transient
response while reducing distortion.
The microphone element is enclosed in a
rugged housing with a low-reflectance black
finish. A 5/8"-27 threaded flange allows the
microphone to mate with the threads of a
standard microphone desk or floor stand. A
5/8"-27 threaded stud is also provided so it can
be secured to a permanent mounting surface.
Operation and Maintenance
Output is low impedance balanced.The output
connector mates with XLRF-type 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 conven-
tion.
DC phantom power (9-52 volts) must be
applied equally to Pins 2 and 3, with the ground
for the power supply connected to Pin 1. This
can be provided by a console or mixer with
built-in phantom voltage or with the addition
of an in-line phantom power supply, such as
the recommended Audio-Technica CP8506
and AT8801 power supplies.
If an extension cable is necessary, AT8314
cable (or equal) should be used. Regardless
of cables used, it is important that both ends
of each cable are wired consistently, with the
shield always connected to Pin 1 at both
ends, Pin 2 connected to Pin 2, and Pin 3 to
Pin 3.This will ensure that all microphones are
electrically in phase and reduce problems of
uneven response and sound cancellation
when two microphones are used close to each
other.
The high sensitivity of the PRO47Tensures
useful output and an excellent match to most
mixer, tape recorder and amplifier inputs.
It will provide undistorted output even in
sound fields as loud as 134 dB SPL. However,
due to the high sensitivity, in some instances
it may be possible to overload sensitive input
stages. If distortion occurs, first check for
input overload. In such cases, an attenuator
such as the Audio-Technica AT8202 may be
required between the mic and the electronics
input. (Also, many mixers provide “input pad”
switches to reduce mic-input signal levels.)
The provided AT8146 windscreen simply slips
over the head of the microphone, effectively
reducing wind noise or “popping” when used
extra close.
The small-diameter gooseneck is very easy
to manipulate for proper positioning. It is
heavily lubricated to offer very smooth and
quiet operation. Should it become noisy with
prolonged use, apply a light machine oil
directly on the gooseneck area affected.
While a modern condenser microphone is
not unduly sensitive to the environment, tem-
perature extremes can be harmful. Exposure
to high temperatures 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.
Description
The PRO47Tis a wide-range condenser
microphone with a cardioid (unidirectional)
polar pattern. It was designed for high-quality
sound reinforcement and other demanding
sound pickup situations. Standing 12.40"
above the mounting surface, its small-diameter
alternating gooseneck design permits highly
flexible positioning while maintaining a smooth,
well-contoured appearance. The PRO47TL is
a 15.79" version of this microphone.
The PRO47Tfeatures a 9.8' (3.0 m) perma-
nently-attached miniature cable with an
XLRM-type connector, which allows it to be
plugged directly into an XLRF-type jack or
cable connector.The unit’s integral electronics
can be powered from any external 9V to 52V
DC phantom power source.

One-Year Limited Warranty
Audio-Technica microphones and accessories purchased in
the U.S.A. are warranted for one year from date of purchase
by Audio-Technica U.S., Inc. (A.T.U.S.) to be free of defects in
materials and workmanship. In event of such defect, product
will be repaired promptly without charge or, at our option,
replaced with a new product of equal or superior value if
delivered to A.T.U.S. or an Authorized Service Center,
prepaid, together with the sales slip or other proof of purchase
date.
Prior approval from A.T.U.S. is required for return.
This warranty excludes defects due to normal wear, abuse,
shipping damage, or failure to use product in accordance with
instructions. This warranty is void in the event of unauthorized
repair or modification.
For return approval and shipping information, contact
the Service Department, Audio-Technica U.S., Inc.,
1221 Commerce Drive, Stow, Ohio 44224.
Except to the extent precluded by applicable state law,
A.T.U.S. will have no liability for any consequential,
incidental, or special damages; any warranty of mer-
chantability or fitness for particular purpose expires
when this warranty expires.
This warranty gives you specific legal rights, and you may
have other rights which vary from state to state.
Outside the U.S.A., please contact your local dealer for
warranty details.
PRO 47 T and PRO 47 TL
200 Hz
1 kHz
5 kHz
8 kHz
LEGEND
SCALE IS 5 DECIBELS PER DIVISION
90
60
120
30
150
210
240
270
300
330
180
0
PRO47TandPRO47TL SPECIFICATIONS†
Element ..................................................... Fixed-charge back plate
permanently polarized condenser
Polar Pattern ............................................. Cardioid (Unidirectional)
Frequency Response .............................. 70-16,000 Hz
Open Circuit Sensitivity .......................... –37 dB (14.1 mV) re 1V at 1 Pa*
Impedance ................................................ 100 ohms
Maximum Input Sound Level .................. 134 dB SPL, 1 kHz at 1% T.H.D.
Signal-to-noise Ratio1.............................. 66 dB, 1 kHz at 1 Pa*
Dynamic Range (Typical) ......................... 106 dB, 1 kHz at Max SPL
Phantom Power Requirements ............... 9-52V DC, 2 mA typical
Weight (less cable)
PRO47T................................................ 2.2 oz (63 grams)
PRO47TL .............................................. 2.4 oz (67 grams)
Dimensions
PRO47T................................................ 12.40" (315.0 mm) long
PRO47TL .............................................. 15.79" (401.0 mm) long
Both ....................................................... 0.47" (12.0 mm) head diameter
Output Connector .................................... 3-pin XLRM-type
Cable ......................................................... 9.8' (3.0 m) long (permanently attached
to microphone), 0.10" (2.6 mm) diameter,
2-conductor, shielded cable
Accessories Furnished .......................... AT8146 foam windscreen,
AT8425 5/8"-27 threaded mounting stud
Optional Accessories:
AT8104a large metal windscreen.
AT8117 large foam windscreen for
high-wind conditions.
CP8201 line matching transformer
(Lo-Z to 50,000 ohms).
AT8202 adjustable in-line attenuator for use
with balanced Lo-Z microphones.
AT8314 2-conductor, shielded, vinyl-jacketed,
broadcast-type cable with XLRF-type connector
at microphone end, XLRM-type connector at
equipment end. Available in 10', 20', 25', 30', 50'
& 100' lengths.
AT8416 shock mount.
CP8506 four-channel 48V phantom power
supply (AC powered).
AT8601 microphone desk stand.
AT8614 die-cast microphone desk stand.
AT8801 single-channel 48V phantom power
supply (AC powered).
Polar Pattern
PRO47T
Dimensions PRO47TL Dimensions
12.40"
315.0 mm
2.6 mm
0.10"
2.68"
68.0 mm
0.75"
19.0 mm
0.10"
1.18"
30.0 mm
2.24"
56.9 mm
12.0 mm
0.47"
15.79"
401.0 mm
2.6 mm
0.10"
2.68"
68.0 mm
0.75"
19.0 mm
0.10"
1.18"
30.0 mm
2.24"
56.9 mm
12.0 mm
0.47"
Audio-Technica U.S., Inc., 1221 Commerce Drive, Stow, Ohio 44224
Audio-Technica Limited, Old Lane, Leeds LS11 8AG England
Form No. 0320-0806-01-B/W © 1998 Audio-Technica U.S., Inc. Printed in U.S.A.
† 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