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11
The system power amplifiers shall have an unfiltered frequency response of 10 Hz to 30 kHz which deviates
no more than +0, -1 dB up to rated power, a damping factor greater than 100 @ 1 kHz into 8 ohms, hum and
noise better than 90 dB below rated power, and THD and IMD of less than 0.1%. The woofer amplifier shall
be capable of 150 W into a 8 ohm nominal load, and the tweeter amplifier shall be capable of 50 W output
into a 8 ohm load, and both shall incorporate independent DDT
™
compression.
The input signal shall be electronically divided into high frequencies and low frequencies by a staggered-
pole third order slope line-level crossover at 2 kHz. The low frequencies shall be processed to provide bass
boost, subsonic filtering and overall response shaping, and the high frequencies shall be equalized for
constant directivity horn EQ- and response-shaping.
The enclosure shall be constructed of injection-molded polypropylene of 1/4" nominal thickness with a UL
flame rating, and reinforcing ribs internally. A handgrip shall be molded-in on the top rear edge, and one
on each side of the woofer.
A powder-coated metal grille shall be provided for woofer protection. The cabinet shall incorporate a pole
mount for speaker stand use, four tall sturdy rubber feet for floor standing use, and four mounting point
inserts on the top and bottom each for flying use.
The outside dimensions shall be: 23.69” tall by x 17.81” wide (10.00” in rear) by x 13.75” deep, and
the weight shall be 28 lbs. Power requirements shall be: 100 Watts nominal, 100 & 120 VAC, 50/60 Hz
Domestic and 220-240 VAC, 50/60 Hz (Export). The loudspeaker system shall be called a Peavey PR
12D.