Operating instructions

Page 4 of 16 SA-441-10 Installation and Operating Instructions
CP4816D 03/31/10
GENERAL DESCRIPTION
The SA-441 Dual Siren Amplifier is a premium unit designed for dual 100W speaker use. The
control head is only 1 inch deep and can be installed in minimum clearance areas. Connection
between the control head and amplifier is via a single lead wire with common ground.
A 6-position rotary selector switch controls the primary operating modes of Radio, Horn
(Standby), Manual, Wail, Yelp, and Phaser. A Dual siren control switch provides additional
modes, including dual Wail, dual Yelp, Wail and Yelp, dual Phaser, dual Horn, and Two-Tone.
A Siren push-button switch is provided for Manual control of the output tone or Horn or Yelp
override, depending on the selector switch setting. An independent toggle switch controls
power. A hole is provided in the amplifier to adjust Radio volume.
Depending upon the version, the microphone may or may not be directly mounted to the
control head. Units with an “F” suffix have the microphone permanently mounted to the
faceplate. Units with an “FX” suffix are provided with an extension harness and connectors for
remote mounting of the microphone.
An auxiliary input is provided for connection to a positive or negative horn ring circuit or switch,
performing the same function as the Siren push-button.
An 8-position DIP switch on the amplifier allows selection of various options: Two-Tone to
replace Phaser, Phaser disable, Horn disable, dual mode disables, and Horn Ring Cycler 2
(HRC2), which allows cycling through Wail, Yelp, and Phaser by tapping the horn ring when
the selector switch is in the Horn position. The front panel is backlighted with LED's for night
visibility.
This durable unit utilizes short circuit, high voltage, and reverse polarity protection systems for
maximum service life over a wide temperature range. Two separately fused amplifiers provide
redundancy, and the unit will operate with only one amplifier functioning.