Page 4 of 16 SA-441-10 Installation and Operating Instructions
11/1/19 CP5203A
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, Horn, Yelp or Power C override, depending on the
selector switch setting. An independent toggle switch controls power. A hole is provided in the amplifi-
er 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, per-
forming 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 maxi-
mum service life over a wide temperature range. Two separately fused amplifiers provide redundancy,
and the unit will operate with only one amplifier functioning.
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