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or visit
www.soundoffsignal.com
500 Series Control System and Siren Amplifier
ENGSA5(xxxSx)
Rev. D - 07/2021
feature needs to be activated in the SoundOff Central bluePRINT
Software. It is not on by default.
Vehicle OEM’s typically use pulse width modulation frequencies from
100 to 250 Hz.
PWM is measured in Duty Cycle - referring to “on” time in each
cycle. Below is an example of different common duty cycles.
Vehicle manufacturers commonly use PWM to control vehicle
brightness, including headlights, parking lights, and interior lights.
CN7.2 - CN7.9 - Discrete Inputs 1-8
Through SoundOff Central bluePRINT Programming, each of these
inputs can be customized and mapped to control different outputs.
All of these inputs can be set to high polarity (positive), or low
polarity (ground).
System Siren Functions
CN8 – Siren Speaker Outputs
The Orange and Orange/Black wire pair is the primary speaker (A)
output on a 100 or 200-watt system. For 200-watt systems, the
Green and Green/Black speaker outputs drive the secondary speaker
(B). When extending the wiring to the siren speaker, use a minimum
of
16ga wiring
.
Please note: There is no polarity requirement for these outputs. Either
output can be considered positive or negative.
CN9.3 & CN 9.6 – Radio Rebroadcast
The two blue wires on CN9 are reserved for Radio Rebroadcast
functions. Radio rebroadcast allows the siren amplifier to broadcast
radio transmissions through the siren speaker. Radio Rebroadcast
will not work if the signal is driving remotely amplified speakers,
since the signal amplitude is likely too low.
Locate the two wires that connect the external speaker to the two-
way radio. Splice one blue wire into one of the external speaker
wires. Splice the other blue wire into the other external speaker wire.
If the blue wires need to be extended, use a minimum of 20ga wire.
Radio Rebroadcast Volume
Radio Rebroadcast volume must be adjusted before placing the
vehicle into service. Volume can be set through the SoundOff Central
bluePRINT Software.
PA Microphone
The PA Microphone in bluePRINT is a specialized high gain
microphone that connects via a 1/4” TRS (Tip/Ring/Sleeve) audio
jack on the front of the control panel.
12v Input @ 100% Duty Cycle - Signal is never off.
12v Input @ 75% Duty Cycle - Signal is off 25% of the time.
12v Input @ 50% Duty Cycle - Signal is off 50% of the time.
Microphone to the control panel isn’t desirable. As an optional
installation, the PA Microphone can be connected directly to the
siren amplifier, using accessory kit PSRN5HDK3.
The accessory kit includes a 20’ TRS audio cable, an additional
microphone jack and an internal adapter cable, allowing the
microphone to be removed from the control panel, and connected
directly to the siren amplifier.
On pages 12 and 13 is an example of both types of installations.
PA Volume
PA volume is set using SoundOff Central bluePRINT Software.
P
ROGRAMMING
CN10 - USB Port
All programming for bluePRINT is performed through this port.
Connected lightbars can also be configured through this port.
Programming & Troubleshooting
SoundOff Central bluePRINT Software allows for programming of
bluePRINT.
D
EFAULT
F
UNCTIONALITY
Although we anticipate the 500 Control System will be custom
programmed either by the upfitter or the end-user, it does contain
default functionality that provides operation similar to the 400 series
siren amplifier.
These defaults are erased the first time a program is uploaded to the
500, and they are not recoverable.
This information is covered in the 500 Control System Defaults
Addendum, which is available through the Dealer Portal.
W
IRE
A
MPERAGE
T
ABLE
N
OTICE
:
• These figures are calculated assuming battery voltage at 12.8
VDC. This accounts for equipment that may be running with the
engine off.
• Don’t forget the wire length accounts for the total length of the
circuit - from power supply through the load device to ground
termination.
• This table was calculated with a target voltage drop at 2% or less.
• Finally, be sure to calculate wire length assuming 125% load capacity.
W
IR
E
G
AU
GE
A
MPERAGE
L
EN
GT
H
(I
N
F
EE
T
)
