Carson Manufacturing Co., Inc.
5451 North Rural Street
Indianapolis, IN 46220
Phone: (888) 577-6877 Fax: (317) 254-2667
www.carsonsirens.com
SC-407 Ver. B
LIGHT CONTROL / SIREN AMPLIFIER
Ver. B has different Auxiliary and Cutout Input Polarity Options
INSTALLATION AND OPERATING
INSTRUCTIONS
Carson is a trademark of Carson Manufacturing Company, Inc.
Sound Hazard
- Sound level from siren speaker (>120dBA @ 10 feet) may cause hearing damage.
Do not operate siren without adequate hearing protection for you and anyone in immediate vicinity.
(Ref. OSHA 1910.95 for occupational noise exposure guidelines)
OFF 1 2 3
RAD HORN
PA
MAN/PHSR
L ALY
A
UX 2
A
UX 1R ALY
V
OLUME
Carson
SC-407
ON
OFF
RAD
Y
ELP
STBY
WAIL
Page 2 of 12 SC-407-10 Ver. B Installation and Operating Instructions
05/07/05 CP4842C
TABLE OF CONTENTS
GENERAL DESCRIPTION .................................................................................... 3
SPECIFICATIONS ................................................................................................. 3
INSTALLATION ..................................................................................................... 4
SAFETY PRECAUTIONS .................................................................................. 4
UNPACKING .....................................................................................................4
MOUNTING ....................................................................................................... 4
INSTALLER-SELECTABLE OPTIONS ..............................................................4
SIREN CONNECTIONS ....................................................................................5
LIGHT CONTROL CONNECTIONS ..................................................................6
OPERATION .......................................................................................................... 8
GENERAL ..........................................................................................................8
SIREN SECTION CONTROLS .......................................................................... 8
Siren Control Switches .................................................................................8
Man/Phsr ......................................................................................................8
Horn .............................................................................................................. 8
Microphone ................................................................................................... 8
Volume Controls ...........................................................................................8
Auxiliary Input ...............................................................................................8
Cutout ........................................................................................................... 8
Horn Ring Cycler 2 (Optional) .......................................................................9
LIGHT SYSTEM CONTROLS ...........................................................................9
Lever Switch .................................................................................................9
Automatic Siren ............................................................................................9
Rocker Switches ........................................................................................... 9
SERVICE ............................................................................................................. 10
PROBLEMS ..................................................................................................... 10
PARTS ............................................................................................................. 11
INSTALLATION INFORMATION .....................................................................11
RETURN .......................................................................................................... 12
LIMITED WARRANTY .....................................................................................12
NOTICE
Due to continuous product improvements, we must reserve the right to change any specifications and information,
contained in this manual at any time without notice.
Carson Manufacturing Co., Inc. makes no warranty of any kind with regard to this manual, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose.
Carson Manufacturing Co., Inc. shall not be liable for errors contained herein or for incidental or consequential
damages in connection with the furnishing, performance, or use of this manual.
SC-407-10 Ver. B Installation and Operating Instructions Page 3 of 12
CP4842C 05/07/05
GENERAL DESCRIPTION
The SC-407 Light Control/Siren is a premium unit designed for single or dual 100W speaker use
and lighting control. The primary siren operating modes are Yelp, Wail, Standby and Radio. A
Noise Canceling PA Override and push-button Horn Override are available in all modes except
Radio. A push-button is provided for push-on/push-off Phaser operation in the Yelp and Wail
modes, and Manual siren control in the Standby mode. The Phaser function can be optionally
replaced by Two-Tone or disabled entirely with program jumpers. Another option allows cycling
through Wail, Yelp, and Phaser by pressing the horn ring when the function switch is in the
Standby position (Horn Ring Cycler 2). A latching siren cutout input is provided for connection to
a door switch, etc. to disable the siren when exiting the vehicle. Radio and PA volume controls
are provided on the front panel. The front panel is backlighted with LED's for night visibility. This
compact unit utilizes short circuit, high voltage, and reverse polarity protection systems for maximum service life.
The SC-407 provides a 4-position lever switch with LED indicators for primary lighting system
control of up to 60 amps total, and four illuminating rocker switches provide additional lighting
control with 20 amp per switch rating. The lever switch provides automatic Wail or Yelp siren
activation in position 3 (can be disabled). The light controls are directly connected via heavy lead
wires to assure high reliability.
SPECIFICATIONS
Siren Section
Input Voltage 9 - 16 VDC (negative ground)
Input Current 8 AMPS (@14 VDC - single 100W speaker)
16 AMPS (@14 VDC - dual 100W speakers)
Standby Current Less than 300 ma
Audio Frequency 200Hz - 10 kHz + 3db
Audio Distortion Less than 3% (@1 kHz - single 100W speaker)
Audio Output 40 watts (@14 VDC - single 100W speaker)
Audio Input 400 ohms + 10%
Output Power 105 WATTS RMS MAX. (15 VDC - single 100W speaker)
180 WATTS RMS MAX. (15 VDC - dual 100W speakers)
Siren Frequency 700Hz - 1450Hz (Two-Tone and Horn = 435 & 585Hz)
Tones / Cycle Rates Horn Wail Yelp Phaser Two-Tone
Cycle Rates 109 CPS 15 CPM 210 CPM 15 CPS 60 CPM
High Voltage Prot. 16 - 18 VDC will cause siren output to cease, resume at normal
Short Circuit Current 50 AMPS (supply circuit must be capable of supplying this)
Operating Temp. -15° F to +140°F
Controls 3-position siren mode rocker switch (Yelp, Standby and Wail).
3-position power mode rocker switch (On, Off and Radio).
Momentary push-button Horn switches.
Momentary push-button Manual/Phaser toggle switch.
Auxiliary input connection jumper-programmable for positive or negative Horn,
Manual/Phaser or Horn Ring Cycler 2 operation.
Cutout input connection jumper-programmable for positive or negative latching
cutout operation.
Connections (10-Pin
Conn.)
(2) Positive, (2) Negative, (2) Speaker, (2) Radio, Cutout, Auxiliary
Light Control Section
Voltage 9 - 16 VDC (negative ground)
Controls 4-position lever switch with position 3 siren activation and LED indicators
4 - illuminated on/off rocker switches
Current (Lever Switch) 30 AMPS per circuit, 60 AMPS total
Current (Rocker Sw.) 20 AMPS per switch
Connections
(8" Min. Leads)
Lever Switch - (1) #10 AWG input, (3) #14 AWG outputs
Rocker Switches - (1) #14 AWG input and (1) #14 AWG output per switch
EXTERNAL FUSING REQUIRED
Size 6-1/8" Wide, 5-7/8" Deep, 2-3/4" High
Weight 5-1/2 LBS.
General
Page 4 of 12 SC-407-10 Ver. B Installation and Operating Instructions
05/07/05 CP4842C
INSTALLATION
Proper installation of the unit is essential for years of safe, reliable operation. Please read all
instruction before
installing the unit. Failure to follow these instructions can cause serious dam-
age to the unit or vehicle and may void warranties.
SAFETY PRECAUTIONS
For the safety of the installer, vehicle operator, passengers and the community please observe
the following safety precautions. Failure to follow all safety precautions and instructions may
result in property damage, injury or death.
Qualifications - The installer must have a firm knowledge of basic electricity, vehicle electrical
systems and emergency equipment.
Mounting - Mount the unit for easy access by the vehicle operator. DO NOT mount in air bag
deployment area. Assure clearances before drilling in vehicle. To prevent internal damage
mounting bolts must not enter case more than 1/4".
Wiring - Use wiring capable of handling the current required. Make sure all connections are tight.
Route wiring to prevent wear, overheating and interference with air bag deployment. Install and
check all wiring before connection to vehicle battery.
Testing - Test all siren functions after installation to assure proper operation. Test vehicle operation to assure no damage to vehicle.
Keep These Instructions - Keep these instructions in the vehicle or other safe place for future
reference. Advise the vehicle operator of the location.
UNPACKING
Inspect contents for shipping damage. If found alert carrier immediately
. Contents should include unit with attached microphone, mounting bracket, microphone bracket with 2 screws, 2
mounting bolts, removable terminal block plug, and these instructions. Contact supplier immediately if any components are missing.
MOUNTING
The mounting bracket supplied can be installed above or below the unit. Choose a mounting
location convenient to the operator and away from any air bag deployment areas. Inspect behind
mounting area for clearance. Assure adequate ventilation to prevent overheating. Consider wire
routing and access to connections, as well as microphone bracket placement. Install mounting
bracket to vehicle using 1/4" hardware (not supplied).
If mounting in a rack or console, make sure that mounting bolts do not enter case more than 1/4".
INSTALLER-SELECTABLE OPTIONS
Carefully cutting programming resistor jumpers
or traces on the printed circuit board inside the
case can select various options.
Cover Removal - The cover is held in place by
a snap-fastener on the back of the unit. Hold
the unit with the front case flange on the edge
of a hard surface and press hard on the back of
the unit. The chassis will slide out the front of
the cover.
Auxiliary Input Function - The auxiliary input
normally activates the Horn function. To activate the Man/Phsr function with the auxiliary
input cut the jumper resistor labeled "AUX I".
Auxiliary Input Polarity - The auxiliary input is normally activated by connecting to positive. To
activate by connecting to ground cut the two
jumper resistors labeled "AUX P".
Cutout Input Polarity - The cutout input is normally activated by connecting to positive. To activate by connecting to ground cut the two
jumper resistors labeled "CUT P".
Two-Tone - Two-Tone can replace Phaser by cutting the jumper resistor labeled "T-T".
Phaser Disable - The Phaser function can be completely disabled by cutting the jumper resistor
labeled "PHSR".
OPTION JUMPERS
FUSE
T-T AUX I PHSR CUT P
AUX P
Sound Hazard
- Sound level from siren speaker (>120dBA @ 10 feet) may cause hearing damage.
Do not operate siren without adequate hearing protection for you and anyone in immediate vicinity.
(Ref. OSHA 1910.95 for occupational noise exposure guidelines)
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