AKG WMS420 UHF Vocal Set Wireless System (Band A: 530.025 to 559.00 MHz) From D.O'B. Sound Pro


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The AKG WMS420 UHF Wireless Vocal Set is designed for live sound reinforcement applications such as for public address, presentations, installations, and music performances that require up to eight simultaneously operating systems over a 30 MHz bandwidth. This system consists of an HT420 Handheld Dynamic Wireless Microphone Transmitter, an SR420 UHF Stationary Wireless Receiver, two detachable RF antennas, an AC adapter for the receiver, a microphone stand adapter, and a AA-size battery for the transmitter.

The UHF receiver features two detachable antennas that enable connection to a wide range of professional RF accessories such as antenna splitters and remote mounted directional antennas for use with multi-channel systems. The front panel of the receiver features an on/off button, a rotary volume control, a button for selecting one of the available eight carrier frequencies within the system's range, an LCD display that shows the selected receiving channel, an RF OK LED to indicate the presence of a signal, and a CLIP LED to indicate when the audio level is too high. Partners in Wireless Technology - AKG and D.O'B. Sound Pro.

The back panel of the receiver features a squelch control knob that will automatically mute the audio output if the strength of the radio transmission frequency becomes too weak. The back panel also features a DC IN port with strain relief for connecting the AC adapter, a balanced XLR-3F output for connecting to a live mixer, and an unbalanced 1/4" output for connecting to an amplifier.

The handheld wireless microphone transmitter features a patented D5 dynamic capsule that is designed to reject audio feedback, a noiseless on/off/mute switch, a gain control knob, and an LED indicator light. The microphone is powered by a single AA battery which provides between six and eight hours of operating time with a range of approximately 30 meters. The transmitter also includes charging contacts for use with rechargeable batteries and AKG's CU400 rechargeable base station (sold separately).

Detachable Antennas
Enables the use of professional RF accessories such as antenna splitters and remote antennas in multi-channel systems
Squelch Control
Automatically mutes the audio output if the signal strength of the transmission frequency falls below an adjustable threshold
D5 Dynamic Capsule
Rejects audio feedback
Rechargeable Contacts on Transmitter
Enables the use of rechargeable AA batteries

AKG Vocal Set Specs

Carrier Frequency Band A: 530.025 to 559.00 MHz
Diversity Antenna switching
RF Output 10, 20, or 50 mW (depending on frequency band)
Maximum Channel Output Up to eight compatible channels within one frequency band
Frequency Selection Fixed frequencies
Modulation FM
Audio Bandwidth 40 to 20,000 Hz (± 3 dB)
Range 98' (30 m) 
Further distances can be achieved using external antennas
Rack Mountable 1/2 RU
Dimensions (L x H x D) 5.91 x 1.77 x 7.87" (150 x 45.0 x 200 mm)
Weight Not specified by the manufacturer
Capsule Dynamic D5
Carrier Frequency Band A: 530.025 to 559.00 MHz
Polar Pattern Supercardioid
Signal to Noise Ratio 105 dB-A
THD 0.8% at 1 kHz
Audio Bandwidth 70 to 20,000 Hz (±3 dB)
Transmitter Synchronization Manual
Battery Type Six to eight hours on one AA battery
Dimensions (L x Diam) 9.33 x 2.01" (237 x 51.0 mm)
Weight 7.55 oz (214 g)
Packaging Info
Package Weight 3.045 lb
Box Dimensions (LxWxH) 17.25 x 12.7 x 3.35"





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