PRASEQ Audio system unit
The new receiver audio processing system for ham radio and general communications. It enables you to optimise your reception for band and signal conditions as well as for your personal hearing.
Midrange frequencies are the most critical for achieving clear voice articulation in receive audio. The PRAS allows operators to have unique control over these important frequencies. First, operators can adjust the parametric midrange filter (MID FREQUENCY) from 400 Hz through 4 kHz, with the recommended sweet spot being at 2.5 kHz. In addition, operators can control the presence of these midrange frequencies plus or minus 15 dB using the MID GAIN control. Combined with a low-frequency filter (LOW) set at 160 Hz, and a high-frequency filter (HIGH) set at 6 kHz, the PRAS provides operators unparalleled control and quality of their receive audio.
Included is a 3.5mm to 3.5mm lead plus 1/4" adaptor, he recommended method is to use this cable to connect the external speaker output of your receiver to the 1/8" audio input of the PRAS. When connecting, reduce the receiver AF output to 10 o'clock or lower. Alternatively, the PRAS can be connected via the audio out pins of the DIN connector in the accessory jack on your receiver's rear panel. Check your receiver operation manual for assistance with your receiver's audio outputs. The speaker output of your receiver can also be connected to the PRAS 8 ohm input.
The PRAS is intended to be used with the Heil HPS-5 powered speaker (the PRAS must be used with a powered speaker).
Features