AKG Acoustics GmbH

SPR 4

  • Bodypack receiver with rugged magnesium case
  • Combined on/off and volume control for ease of use
  • Auto Setup and Environment Scan functions for identifying clean frequencies
  • Operates for up to eight hours off two AA size dry batteries, seven hours off optional BP 4000 battery pack with integrated Smart Battery Management system.
  • Backlit display and jog control for ease of use
  • Received signal strength and battery status metering
  • Bottom panel contacts for direct battery charging on optional charger
  • Individual mix function

4 The SPR 4 bodypack receiver features a rugged die-cast magnesium case. Auto Setup and Environment Scan functions for finding clean frequencies make setting up extremely easy. The 30 MHz bandwidth allows manual selection of 1200 frequencies or the system chooses from preprogrammed frequency preset banks.The SPR 4 provides a backlit display and jog control for ease of use. The display indicates the received signal strength and battery status along with other parameters. Integrated charging contacts allow the optional BP 4000 battery pack to remain inside the receiver whilst being charged on the CU 4000 charger (optional). The BP 4000 will be charged to capacity in only one hour, and can power the SPR 4 for about seven hours.

The only control the artist needs to operate is an ergonomically shaped volume control with integrated on/off switch. Placed in the center of the SPR 4 top panel, the volume control with its clearly discernible detents can be operated intuitively even if it is positioned outside the user's field of vision.

An Individual mix function allows a personalized monitor mix to be set up even where only a small sound system with no separate monitor mixer is available.

To accommodate the individual preferences of users, the SPR 4 has been designed to drive a large number of different types of earphones.


 System components for multichannel systems

Consumer Alert (for US users)
Most users do not need a license to operate this wireless microphone system. Nevertheless, operating this microphone system without a license is subject to certain restrictions: The system may not cause harmful interference; it must operate at a low power level (not in excess of 50 milliwatts); and it has no protection from interference received from any other device.
Purchasers should also be aware that the FCC is currently evaluating use of wireless microphone systems, and these rules are subject to change. For more information, call the FCC at 1-888- CALL-FCC (TTY: 1-888-TELL-FCC) or visit the FCC’s wireless microphone website at www.fcc.gov/cgb/wirelessmicrophones


 

© 2012 AKG Acoustics GmbH

- Stereo pocket receiver with rugged magnesium case
- Backlit LCD display with automatic power saving
- Combined on/off and volume control
- Auto setup and Environment scan (Field) function for identifying clean frequencies
- Displays: RF-input level, battery remaining time, frequency, group und countries
- Automatic Lock-Function (Key Lock)
- Operates for up to eight hours with two AA size batteries
- Adjustable squelch level
- Integrated charging contacts
- Headphone output: 3.5mm stereo jack
- Dimensions: 70 x 90 x 25 mm (2.8 x 3.5 x 1 in.)
- Weight: 165g (5.82 oz.)
 


Carrier frequency range500 to 530, 570 to 600, 790 to 820, 835 to 865 MHz
Audio bandwidth35 Hz 20 kHz
THD<0.8% typ.
Signal/noise ratio>90 dB(A) typ.
ModulationFM, MPX Stereo
Channel separation>40 dB(A)
Audio outputs3.5 mm jack, 150 mW (rms)/16 ohms
Battery life 6 to 10 hours, volume dependent, 2 AA batteries or BP 4000
Dimensions70 x 90 x 25 mm (2.8 x 3.5 x 1 in.)
Net weight165 g (5.82 oz.)
Patent(s)Remaining battery life (Patent no. AT 408.280, GB 2.349.230, US 6,344,730)