Overview

Stereo SPL-Limiter with Microphone and Timer

The SPL3TS is a limiter with a microcontroller continuously measureing the input-level and attenuating the output level as much as necessary to keep the sound level below the given threshold. The TS version is equipped with a timer for time based level control.

The SPL3TS has the ability to adjust the sound-level (actual output-level) and the threshold (input sensitivity). It also features a dedicated microphone input for the included measuring microphone. With the microphone connected the SPL3TS has the possibility to measure the audio-level from live-bands etc. This measuring microphone makes the SPL3TS the ideal limiter for live performances where the band uses its own PA system. When, in live mode, the sound-level exceeds the threshold, the limiter can give a warning to the band (with a flashing light). If the sound-level remains too loud for a longer period of time the limiter will activate the sanction output and can, if desired, cut-off the mains supply of the band.

The SPL3TS has a built in clock/ timer. This makes it possible to program a completely different sound level at different periods of the day. The built in calendar allows you to program a list of 10 dates to switch the limiter to bypass automatically. All these settings can be adjusted by using the PC-software. But before it becomes possible to make any changes this software has to be registered; this makes it impossible for un-authorised people to alter the limiters configuration.

All the connectors, the sound-level and threshold controller are inaccessible after the limiter is sealed.

Product Details

  • Stereo sound pressure limiter
  • Microphone for measuring accoustic levels
  • Music- and Live operation modes
  • Sanction output to switch off external amplifiers.
  • Time switch with 3 timeslots per day
  • Timer control via PC-software (USB)
  • Tamper-proof bracket to lock-in the connectors
  • Tamper-proof and sealable cover to protect the settings
  • Threshold and output controls
  • Trigger outputs for external signalling or switching applications
  • External attenuation input
  • Optional relais box SRL-1 for switching applications available
Microphone input
XLR (for the supplied microphone)
Input
2x XLR, electronically balanced
Input level (max.)
-14 to +6 dBu
Input impedance
10 kOhm
Output
2x XLR, electronically balanced
Output impedance
600 Ohm
Frequency response
20 Hz - 20 kHz
Signal/noise ratio
> 80 dB
THD+N
< 0.05 % (CCIR-RMS)
Limiter threshold
-14 to +6 dBu (Line), 80 to 120 dBA (microphone)
Output reduction
0 to -40 dB
External attenuation
0 to -20 dB (10 kOhm variable resistor)
Signalling- and switch outputs
20 V / 10 mA DC
Supply voltage
220 - 240 VAC / 50 Hz
Power consumption
20 W
Dimension (W x H x D)
483 x 45 x 175 mm, 19” / 1HE
- Weight 3.5 kg