The 222 was originally developed as a "post-processor" to ensure US broadcasters' compliance with FCC-mandated occupied-bandwidth regulations. It incorporates a fast, asymmetrical peak limiter, independent pre-emphasis-protection limiting, and a very sharp-cutoff low-pass filter with proprietary overshoot control.
The 222 finds ready application in a wide variety of AM broadcast situations. In addition to the NRSC 10kHz cutoff for medium-wave AM broadcasting in the US, any high-frequency protection characteristic between 4.5kHz and 15kHz can readily be accommodated to meet other domestic and overseas needs. Though the 222 is intended to provide basic final limiting, a "floating platform" release characteristic yields sufficient program dynamics compression that often the unit can be run "barefoot" between the console and transmitter with good results.
Active-balanced, bridging; accepts nominal program line levels between –15dBu and +15dBu.
Active-balanced, 600-ohm resistive source; delivers 0dBm to +15dBm into 600 ohms.
Less than 0.2% THD, 10Hz–cutoff with Peak Limiter OFF.
Less than 1% THD, 200Hz–cutoff with Peak Limiter ON.
Better than 75dB below full carrier modulation (assuming NRSC de-emphasis).
Positive peak amplitude is continuously variable between +100% and +130% of the negative peak value.
bound paper manual
13/4"H x 19"W x 7"D
Additional Product Photos