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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: (43 1) 86 654-0*, Fax: (43 1) 86 654-516
Internet: http://www.akg.com
AKG Acoustics; A Division of Harman Pro Germany
Bodenseestraße 228, D-81243 München/GERMANY
Tel: (089) 87 16-0, Fax: (089) 8716-200
Arbiter Pro Audio
Wilberforce Road, London NW9 6AX/ENGLAND
Tel: (0181) 202 1199, Fax: (0181) 202 7076
AKG ACOUSTICS, U.S.
914 Airpark Center Drive
Nashville, TN 37217, U.S.A.
Tel: (615) 620-3800, Fax: (615) 620-3875
Studer Japan Ltd.
2-43-7, Uehara, Shibuya-ku, Tokyo 151-0064/JAPAN
Tel: (813) 3465-2211, Fax: (813) 3465-2214
Erikson Pro Audio
620 McCaffrey, St-Laurent, Quebec, H4T 1N1, CANADA
Tel: (514) 738-3000, Fax: (514) 737-5069
Internet: www.jam-ind.com/eriksonpro
The wireless microphone system shall provide at least four
channels of operation in the UHF frequencies US54 at 710.400
mHz and US59 at 734.600 mHz, KR3 at 745.650 mHz and KR4
at 750.900 mHz. Transmitter power shall not exceed 10 mW,
effective radiated power. Both handheld and bodypack
transmitters shall be provided. The system shall operate with a
companding system resulting in an A-weighted system dynamic
range no less than 108 dB(A). Both handheld and bodypack
transmitters shall be capable of continuous operation no less than
30 hours with a single pair of AA 1.5 volt batteries.
The transmitters shall provide the following functions:
ON/MUTE/OFF switch and battery status indicator. The
handheld transmitter shall have a maximum diameter no greater
than 40 mm and a length no greater than 258 mm. The handheld
transmitter shall have a net weight no greater than 245 grams.
The bodypack transmitter shall be constructed of rugged
plastic and have the following functions: ON/MUTE/OFF switch
and battery status indicator. There shall be a mini XLR input jack
for microphones and instrument outputs. The bodypack
transmitter shall have a maximum dimension no greater than 96
mm, and the net weight of the bodypack transmitter shall be no
greater than 76 grams.
The receiver shall be rack mountable using the accessory
mounting kit (RMU60). Total harmonic distortion at full output
shall be no greater than 0.8%. The receiver shall have an
adjustable squelch control and a front panel output level control,
continuously variable from microphone to line level. Indicators
shall include RF status, power, and mute status. Both output
XLR balanced and 1/4 inch unbalanced jacks shall be provided.
The wireless microphone system shall be the AKG Acoustics
Model WMS 40.
Architects and Engineers Specifications
DS-WMS 40 UHF
Specifications
Carrier frequencies: UHF-US54 - 710.400 mHz
US59 - 734.600 mHz
KR3 - 745.650 mHz
KR4 - 750.900 mHz
Modulation method: FM
Audio bandwidth: 40 Hz to 20 kHz
THD: typical 0.8%
Signal/noise ratio: typical 108 dB(A)
Handheld transmitter:
RF output: 10 mW (ERP)
Battery life: >30 hours
(2 x 1.5 V AA size batteries)
Size: 10.1 x 1.6 in. (258 x 40 dia mm)
Weight: 8.7 oz. (245 g)
Bodypack transmitter:
RF output: 10 mW (ERP)
Battery life: >30 hours
(2 x 1.5 V AA size batteries)
Size: 3.8 x 2.5 x 0.9 in. (96 x 64 x 22 mm)
Weight: 2.7 oz. (76 g)
Receiver:
Audio outputs: Balanced XLR and unbalanced
1/4” jack; level adjustable from mic
to line; 2 Vrms maximum
Specifications
Size: 9.3 x 5.6 x 1.7 in.
(235 x 142 x 43 mm)
Weight: 16.6 oz. (470 g)
Optional Accessories: RMU 60 Rack mount kit
CH 40 Carrying case
MK/GL Instrument cable
CB 40 Carrying bag for
PT 40 (black or gray)
Microphones available for the PT 40:
C 407/L: Omni-directional lavalier
C 444L: Cardioid headset microphone
Microphones available for the PT 40:
C 411/L: Acoustic vibration microphone
C 419/L: Hypercardioid clip-on instrument microphone
C 420/L: Professional cardioid headset microphone
CK 55 L: Cardioid lavalier microphone
CK 77 WR-L: Water resistant omnidirectional lavalier microphone
C 477 WR-L: Headset version of CK 77 WR-L
CK 97 C/L: Cardioid lavalier microphone