Shure ULX® Professional wireless receivers offer an exceptional value in both performance and price, for both working musicians and sound installers. For use with ULX Professional Wireless systems.

The expanded feature set of the ULXP4 wireless receiver offers a direct path to full, clear audio signals. 

Advanced settings and controls including lockable settings, automatic frequency selection, group scan function, and predictive diversity. More features below.

RF Carrier Frequency Range

470.000 to 865.000 MHz (Available frequencies depend on the applicable regulations in the country where the system is used). Refer to the frequency supplement supplied with the system.

Effective Range

100 m (300 ft.) under optimal conditions

NOTE: Actual working range depends on RF signal absorption, reflection, and interference

Audio Frequency Response

25 to 15,000 Hz, +/- 2 dB

NOTE: Overall system frequency response depends on the microphone element.

Transmitter Audio Polarity

Positive pressure on microphone diaphragm (or positive voltage applied to tip of WA302 phone plug) produces positive voltage on pin 2 (with respect to pin 3 of low impedance output) and the tip of the high impedance 1/4-inch output

Transmitter Gain Adjustment Range

ULX1: 25 dB

ULX2: 25 dB

Receiver Audio Output Level (+/- 38 kHz deviation, 1 kHz tone)

XLR connector (into 600 ohm load): +3.9 dBV (line), -17 dBV (mic)

1/4 inch connector (into 3000 ohm load): -2 dBV

Impedance

ULX1 (input): 1 Megohm ULXS4, ULXP4 (output): 50 ohms at line level; 2000 ohms at mic level

Modulation

+/- 38 kHz deviation compressor-expander system with pre- and de-emphasis.

RF Power Output

ULX1, ULX2: 30 mW maximum

Dynamic Range

>100 dB, A-weighted

RF Sensitivity

1.26 microVolt for 12 dB SINAD (typical)

Image Rejection

80 dB typical

Spurious Rejection

75 dB typical

Ultimate Quieting (reference +/- 38 kHz deviation)

>105 dB, A-weighted

System Distortion (reference +/- 38 kHz deviation, 1 kHz modulation)

0.3% total harmonic distortion, typical

Power Requirements

ULX1, ULX2: 9V alkaline battery; 8.4 V Nicad optional

ULXS4, ULXP4: 14 - 18 Vdc (negative ground), 550 mA

Battery Life

8 to 9 hours (with 9V alkaline battery)

Operating Temperature Range

-20 degrees to 49 degrees C (-4 degrees to 120 degrees F)

NOTE: Battery characteristics may limit this range.

Overall Dimensions

ULX1: 96.5 mm H x 67 mm W x 26.7 mm D (3.86 x 2.68 x 1.10 in.)

ULX2/SM58: 228.6 L x 51 mm Dia. (9 x 2 in)

ULX2/BETA 58: 220.9 mm L x 51 mm Dia. (8.7 x 2 in.)

ULX2/SM86: 213 mm L x 49 mm Dia. (8.4 in x 1.9 in)

ULX2/87, ULX2/BETA 87: 223.5 mm L x 51 mm Dia. (8.8 x 2 in.)

ULX4S: 43 mm H x 214 mm W x 163 mm D (1.72 in. x 8.56 in. x 6.52 in.)

ULX4P: 43 mm H x 214 mm W x 172 mm D (1.72 in. x 8.56 in. x 6.88 in.)