The compact speaker system shall be of the two-way type, with a 15-inch low-frequency loudspeaker front-mounted in a ducted bass-reflex hardwood plywood enclosure, a compression driver mounted on a high frequency horn which has a 2-inch throat and 4-inch diameter diaphragm with gap field strength of 19k Gauss, and a separate Control Electronics Unit.

The Control Electronics Unit shall contain a power supply capable of operating from a 90-125/180-250V AC, 50/60 Hz line; electronic crossover circuitry; electronic delay for the phase alignment of the low frequency speaker; low- and high-frequency protection filters which automatically activate under high power conditions; RMS, peak and excursion limiters to protect the speaker components; equalization circuitry; active balanced input; and indicator LEDs for power and limiters. Total harmonic distortion shall be less than 0.1%. “A” weighted noise level shall be at least 110 dB below maximum rated output of +26 dBu.

The speaker system, its companion Control Electronics Unit, and a power amplifier rated at up to 600 watts/channel into 8 ohms shall meet the following performance criteria: frequency response, 40 Hz to 18 kHz ±4 dB measured with 1/3 octave pink noise at 1 meter on axis; output of 130 dB SPL one meter on axis with peaks in excess of 140 dB SPL when driven with “A”-weighted noise. High frequency distribution, 70 degrees horizontal by 60 degrees vertical.

Speaker enclosure dimensions are 21 1ž4" W x 24 1ž4" H x 18 1ž4" D, weight 82 lbs (37 kg). Control Electronics Unit dimensions are 19" W x 1 3ž4" H x 7 3ž4" D, weight 8 lb (3.6 kg).

The speaker system shall be the Meyer Sound MSL-2A.

The Control Electronics Unit shall be the Meyer Sound S-1.