Architectural and Engineering Specifications
The powered loudspeaker system shall have a frequency response from 45 Hz to 150 Hz.
The peak SPL with inaudible distortion shall reach 124 dB with music as a source, when
measured at a distance of 1M and driven to full output capacity. The system shall utilize a 15"
Black Widow®woofer.
The powered subwoofer system shall have a group of high impedance input connectors
consisting of one 1/4" RTS phone jack, one male XLR and one combo female XLR and 1/4"
RTS phone jack, on the rear panel, all connected in parallel. Avolume control will be located
next to the input jack group. A balanced high pass filtered output shall be provided, with one
female XLR and one 1/4" RTS phone jack provided.
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 95 dB below rated power, and typical THD
and IMD of less than 0.2%. The amplifier shall be capable of 300W into an 8 ohm nominal
load, and shall incorporate 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 150 Hz. The low frequencies shall be
processed to provide bass boost, subsonic filtering and overall response shaping, and the
high frequencies shall be made available via an external output.
The enclosure shall be constructed of injection-molded polypropylene of 1/4" nominal
thickness with a UL flame rating, and reinforcing ribs internally. Ahandgrip shall be molded in
on each side of the woofer and on the top rear edge.
A vinyl coated perforated metal grille shall be provided for woofer protection. The cabinet
shall incorporate 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 28 9/16" tall by 21 5/16" wide by 17" deep, and the weight
shall be 62 lbs. Power requirements shall be: 500 watts, 120VAC, 60 Hz Domestic and
240 VAC, 50 Hz (European). The loudspeaker system shall be called a Peavey Impulse 500P
Subwoofer.
12