18 Sound - Click here for more information

The ASP-202 is able to differentiate between programme sound and background noise levels and adjusts the programme audio to the optimum listening level, irrespective of the background noise.Cost

Effective - by utilising discrete electronics as opposed to expensive DSPs or microprocessors the ASP-202 is able to offer extremely stable and reliable performance in a cost effective, industrial specification package.

More importantly the Ambience Compensator requires neither complex installation nor repeated adjustment to ensure that the audio levels remain tightly controlled.

The ASP-202 can be installed and set-up by any technician with a basic understanding of audio principals. The 19" rack mount frame is designed to be installed in a control room or office area with other audio processing equipment.

The ASP-202 is inserted into the programme feed (before the power amplifier) and connections are made via industry standard XLR connectors. Any mixture of balanced or unbalanced feeds are accommodated. The Sound Pressure Level Sensor - SPL 202 is located in the target area where the ambient noise level is to be monitored and connected to the ASP-202.

Input level trim with peak indication for both stereo channels.

The ASP-202 automatically adjusts for any changes made in the target area from time to time (such as the installation of additional speakers, furnishings etc).

• Programme audio present indicator.
• Internal power supply indication.
• Fault indication if a short circuit is detected on the programme outputs.
• Fault indication if SPL 202 sensor not connected and SPL 202 sensitivity adjustment.
• Front panel programme level control - set for optimum listening level.

The Audio Level Equaliser consistently maintains the optimum audio volume irrespective of input level changes.

Variations in audio intensity annoy the listener, whether they are in a restaurant, banking hall, music shop, or 'surfing' through television channels at home.

Due to a lack of standards for volume reference levels in the recording industry, every CD and even adjacent tracks can be recorded at a different level.

Attending to these varying levels often takes up valuable time. The solution is the LE-207 which automatically maintains the optimum listening level no matter how much the input level varies. The LE-207 smoothly translates any changes in input level to maintain a constant perceived average audio output volume level.

The LE-207 utilises several internal time constants (pre-set) in order to avoid 'pumping' effects and no compression artefacts are generated. The entire dynamic range of the input audio is maintained and moved up or down in level. A limiter is only incorporated to protect sensitive downstream equipment such as amplifiers and speakers from a large instantaneous increase in the input level. Once the LE-207 has smoothly tracked the increase in level, the limiter is disabled.

Cost Effective - The LE-207 has been designed with the discerning, price conscious client in mind and offers extremely stable and reliable performance in a cost effective, industrial specification package.

More importantly the Audio Level Equaliser requires neither complex installation nor on-going adjustment to ensure that your audio levels remain tightly controlled.

Installation and Operation

The LE-207 is packaged in a robust, free-standing, aluminium enclosure and can be installed by an unskilled person.

The LE-207 is inserted into the programme feed (before the power amplifier) and connections are made via industry standard RCA connectors.

Once the LE-207 is connected, the power amplifier volume control is set to the preferred listening level, and that’s it! No more problems with varying audio levels.

• Input changes to a lower level - bar graph display moves to the left and the central LED is red while the LE-207 is equalising.
  
  
• Input changes to a higher level - bar graph display moves to the right and the central LED is green while the LE-207 is equalising.
  
  
• Input is constant and LE-207 has completed equalising - bar graph is centered (green LED's lit) and central LED flashes (mixture of red and green).