Audio Technica PRO 41 Manual, Specifications

SCALE IS 5 DECIBELS PER DIVISION
Polar Pattern
200 Hz
LEGEND
5 kHz
1 kHz
8 kHz
240
180
210
270
300
330
0
150
120
90
30
60

12" or more on axis
100
50
200
LEGEND
10k
5k
1k
500
2k
20k
Frequency in Hertz
Frequency Response
Response in dB
10 dB

• Provides natural, full-range vocal reproduction
• Silent on-off operation thanks to MagnaLock
™
switch design
• Hi-ENERGY
®
neodymium magnet for improved output and 
transient response
• Two-stage ball-type screen reduces wind noise and “popping”
during close use
• Corrosion-resistant contacts from gold-plated XLRM-type 
connectors
• Superior internal shock mounting reduces handling noise
• Rugged design and construction for reliable performance
• Cardioid polar pattern reduces pickup of sounds from the sides 
and rear, improving isolation of desired sound source
Output from the microphone’s XLRM-type connector is low 
impedance (Lo-Z) balanced. The signal appears across Pins 2 and 3;
Pin 1 is ground (shield). Output phase is “Pin 2 hot” – positive acoustic
pressure produces positive voltage at Pin 2.
Plug Type Ground Audio “+” Audio “–”
XLR Pin 1 Pin 2 Pin 3
1
/
4
" “TRS” Sleeve Tip Ring
1
/
4
" Sleeve Tip Sleeve
To avoid phase cancellation and poor sound, all mic cables must be
wired consistently: Pin 1-to-Pin 1, etc. For a high-impedance (Hi-Z) mic
input, connect a Lo-Z balanced cable to a Hi-Z matching transformer 
(A-T CP8201 or equal) at the equipment input.
When using the PRO 41 in settings with a stage monitor speaker, 
the speaker should be located 180° off axis (at the rear of the 
microphone). This placement, in conjunction with the microphone’s 
uniform cardioid pickup pattern, will virtually eliminate the possibility of
undesired audio feedback.
The PRO 41 utilizes a MagnaLock on/off switch. This specially designed
switch operates silently and may be locked in the “on” position to 
prevent accidental turn-off during use. To lock, slide the switch up into
the “on” position (Fig. 1a). Using a small flat-head screwdriver, rotate 
the small screw in the center of the switch 90 degrees (
1
/
4
turn) 
counter-clockwise (Fig. 1b). Never force the screw. When the screw slot
position is horizontal (“across” the microphone body), the switch is
locked. To unlock the switch, turn the screw 90 degrees clockwise until
the screw slot position is again vertical (in line with the microphone
body). Never try to turn the switch more than 90 degrees or 
1
/
4
rotation.
The switch may only be locked in the “on” position. Do not try to turn the
screw when the switch is in the “off” position.
Take care to keep foreign particles from entering the windscreen. An
accumulation of iron or steel filings on the diaphragm, and/or 
foreign material in the windscreen’s mesh surface, can degrade 
performance.
Audio-Technica U.S., Inc., 1221 Commerce Drive, Stow, Ohio 44224
Audio-Technica Limited, Old Lane, Leeds LS11 8AG England
www.audio-technica.com
P3893-00190     P51681-EN     ©2004  Audio-Technica U.S., Inc.    Printed in Taiwan
PRO 41 CARDIOID DYNAMIC MICROPHONE

ON ON
ON
OFF

Fig. 1a Fig. 1b Fig.1c Fig. 1d
Do not try
Do not turn to lock switch
Unlocked Locked screw clockwise in the “off ”
Position Position to lock position
PRO 41 SPECIFICATIONS
†
ELEMENT Dynamic
POLAR PATTERN Cardioid
FREQUENCY RESPONSE 90-16,000 Hz
OPEN CIRCUIT SENSITIVITY –55 dB (1.7 mV) re 1V at 1 Pa*
IMPEDANCE 300 ohms
SWITCH MagnaLock
™
on/off
WEIGHT (less cable and accessories) 10.7 oz (304 g)
DIMENSIONS 7.28" (185.0 mm) long, 
2.09" (53.1 mm) head diameter
OUTPUT CONNECTOR Integral 3-pin XLRM-type
CABLE 15.0' (4.5 m) cable with XLRF-type 
connector at microphone end, 
XLRM-type connector at equipment 
end
ACCESSORIES FURNISHED  AT8470 Quiet-Flex
™
stand clamp for 
5
/
8
"-27 threaded stands;
5
/
8
"-27 to 
3
/
8
"-16 threaded adapter;
soft protective pouch
†
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 /cm
2
= 10 microbars = 94 dB SPL
Specifications are subject to change without notice.
 

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