Product Description

The AKG WMS 400 is your best choice for any application calling for a solution that is more flexible than a simple plug-and-play system yet easy to set up and operate. The WMS 400 provides cost-efficient, high-performance solutions for situations where several radio mics will be used simultaneously, including gigs at small clubs, small stages, or regional events. Using several single-channel systems has its limitations and may simply be too much for the available radio band.

SR 400
Integrated frequency scanner with frequency management database

Up to 12 channels can be used simultaneously in each subband

Infrared data transmission link

Rehearsal function for finding dead spots

Programmable warning functions using two-color display backlighting

The SR 400 diversity receiver is your best choice for cost-efficient, high-performance multichannel systems. Up to 12 channels* can be used simultaneously within the same subband and even large systems will work smoothly in environments hostile to RF transmission.

Being compatible with professional WMS 4000 antenna splitters, power supplies, and high quality antennas, the WMS 400 enables you to set up highly complex wireless systems. In Auto Setup mode, the receiver will scan the available bands, find an interference-free channel, and transmit the related frequency data to the assigned transmitter via infrared. This technique significantly reduces the time it takes to set up a multichannel system. A Rehearsal function identifying dead spots, a programmable display clearly indicating all important system parameters, twocolor display backlighting warning the user of critical conditions from a distance, and a transmitter battery status display on the receiver enhance reliability and add to ease of use.

PT 400
Infrared data download link for quick setup

Battery status display and data transmission

Connector for external mute switch

Integrated charging contacts

Extremely compact case

Professional mini XLR audio input

Mini XLR to 1/4 in. cable (included)

The PT 400 is a high-performance, compact bodypack transmitter for a host of applications. Many innovative features enhance both system reliability and user friendliness.

An LC display indicates all important system data at a glance, including the selected frequency in MHz or as a Preset subchannel, available battery capacity in hours, a warning when battery capacity is low, as well as the current transmission mode.

Once you have set a frequency on the receiver, an infrared transmission link will feed the related data to the assigned transmitter within seconds, making the setting up of large multichannel systems child's play.

The PT 400 uses a rugged case, and the mini XLR input allows you to connect a wide selection of microphones and instruments. A special jack lets you connect an optional external mute switch enabling the user to mute the audio signal even if the transmitter is hidden in the clothes.

Technical Description

Frequency Bands
Band 1: 650 to 680 MHz (TV Channels 44-48)
Band 2: 680 to 710 MHz (TV Channels 49-53)

Band 1: 650.000 to 680.000 MHz Range

TV Channel 44: 650.000 to 656.000 MHz
Frequency Combinations:
650.200 MHz
650.600 MHz
651.900 MHz
650.300 MHz

TV Channel 45: 656.000 to 662.000 MHz
Frequency Combinations:
656.100 MHz
657.300 MHz
658.400 MHz
659.100 MHz
661.000 MHz

TV Channel 46: 662.000 to 668.000 MHz
Frequency Combinations:
662.500 MHz

665.400 MHz

666.000 MHz

TV Channel 47: 668.00 MHz to 674.00 MHz
Frequency Combinations:
669.300 MHz

TV Channel 48: 674.000 to 682.000 MHz
Frequency Combinations:
674.000 MHz
675.000 MHz
677.200 MHz
678.800 MHz
679.300 MHz
679.600 MHz

Band 2: 680.000 to 710.000 MHz Range

TV Channel 49: 680.000 to 686.000 MHz
Frequency Combinations:
680.200 MHz
680.600 MHz
681.900 MHz
683.300 MHz

TV Channel 50: 686.000 to 692.000 MHz
Frequency Combinations:
686.100 MHz
687.300 MHz
688.400 MHz
689.100 MHz
690.000 MHz

TV Channel 51: 692.000 to 698.000 MHz
Frequency Combinations:
692.500 MHz
695.400 MHz
696.000 MHz

TV Channel 52: 698.00 MHz- 704.000 MHz
Frequency Combinations:
699.300 MHz

TV Channel 53: 704.000 to 710.000 MHz
Frequency Combinations:
704.000 MHz
705.000 MHz
707.200 MHz
708.800 MHz
709.300 MHz
709.600 MHz

Don't use 674.00 MHz if CH.47 and/or CH.48 are used by TV stations
Don't use 704.00 MHz if CH.52 and/or CH.53 are used by TV stations

IF a TV station occupies a channel, don't use it!

Use of more than two bands requires careful, expert setup
WMS 400 = 24 channels maximum
Separate bands by one channel if possible (Example: 1 + 3; 2 + 4)

SR 400
Carrier frequency range: 650 to 680, 680 to 710, 720 to 750, 760 to 790, 790 to 820, 835 to 863 MHz

Modulation: FM

Audio bandwidth: 35 to 20,000 Hz

THD: <0.3% (at 1 kHz)

Signal/noise ratio: 120 dB(A)

Audio outputs: balanced XLR and unbalanced TS 1/4" jack, balanced level switchable to 30 or 0 dBm

Dimensions: approx. 200 x 44 x 190 mm (7.8 x 1.7 x 7.4 in.)

Net weight: 972 g (2.2 lbs.)

PT 400
Carrier frequency range: 650 to 680, 680 to 710, 720 to 750, 760 to 790, 790 to 820, 835 to 863 MHz

Modulation: FM

Audio bandwidth: 35 to 20,000 Hz

Selectable channels: 1200

Max. channels for multichannel operation: > 50

THD: <0.7% typical at rated deviation/1 kHz

Signal/noise ratio: 120 dB(A) typical

RF output: 50 mW max. (ERP)

Battery life: 1.5 V AA size dry battery: 6 hours; 1.2 V NiMH, 2100 mAh AA size rechargeable battery: 8 hrs.

Dimensions: approx. 60 x 73,5 x 30 mm (2.4 x 2.9 x 1.2 in.)

Net weight: 90 g (3.2 oz.)

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