OWNER'S MANUAL
Copyright 2018, Samson Technologies Corp.
v1
Samson Technologies Corp.
278-B Duffy Ave
Hicksville, NY 11801
www.samsontech.com
Important Safety Information
RISQUE DE CHOC ÉLECTRONIQUE -
This lightning flash with arrowhead symbol within an equilateral triangle is
intended to alert the user to the presence of non-insulated “dangerous voltage”
within the product’s enclosure that may be of sufficient magnitude to constitute
a risk of electric shock.
The exclamation point within an equilateral triangle is intended to alert the user
to the presence of important operating and maintenance instructions in the
literature accompanying the appliance.
WARNING: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE COVER (OR
BACK) AS THERE ARE NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO
QUALIFIED SERVICE PERSONNEL.
If you want to dispose this product, do not mix it with general household waste. There is a
separate collection system for used electronic products in accordance with legislation that
requires proper treatment, recovery and recycling.
Private household in the 28 member states of the EU, in Switzerland and Norway may return
their used electronic products free of charge to designated collection facilities or to a retailer (if
you purchase a similar new one).
For Countries not mentioned above, please contact your local authorities for a correct method of
disposal.
By doing so you will ensure that your disposed product undergoes the necessary treatment, recovery
and recycling and thus prevent potential negative effects on the environment and human health.
ATTENTION
NE PAS OUVRIR
3Stage 412: Quad Handheld Wireless System
Important Safety Information
FCC Rules and Regulations
Samson wireless receivers are certified under FCC Rules part 15 and transmitters are certified
under FCC Rules part 74.
Licensing of Samson equipment is the user’s responsibility and licensability depends on the
user’s classification, application and frequency selected.
NOTE: This equipment has been tested and found to comply with the limits for a Class B digital
device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable
protection against harmful interference in a residential installation. This equipment generates,
uses and can radiate radio frequency energy and, if not installed and used in accordance with
the instructions, may cause harmful interference to radio communications. However, there is
no guarantee that interference will not occur in a particular installation. If this equipment does
cause harmful interference to radio or television reception, which can be determined by turning
the equipment off and on, the user is encouraged to try to correct the interference by one or
more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver
is connected.
• Consult the dealer or an experienced Radio/TV technician for help.
The device has been evaluated to meet general RF exposure requirement.
To maintain compliance with FCC’s RF exposure guidelines, this equipment should be installed
and operated with a minimum distance of 20cm between the radiator and your body.
The manufacturer is not responsible for any radio or TV interference caused by unauthorized
modifications or change to this equipment. Such modifications or change could void the user’s
authority to operate the equipment.
This radio transmitter (identify the device by certification number or model number if Category
II) has been approved by Industry Canada to operate with the antenna types listed below with
the maximum permissible gain indicated. Antenna types not included in this list, having a gain
greater than the maximum gain indicated for that type, are strictly prohibited for use with this
device.
This device complies with Part 15 of the FCC rules and Industry Canada license-exempt RSS
standard(s).
Operation is subject to the following two conditions:
(1) this device may not cause harmful interference, and
(2) this device must accept any interference received, including interference that may cause
undesired operation.
WARNING: Changes or modifications not expressly approved by the party responsible for
compliance could void the user’s authority to operate the equipment.
4
Important Safety Information
1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this apparatus near water.
6. Clean only with dry cloth.
7. Do not block any ventilation openings. Install in accordance with the manufacturer’s
instructions.
8. Do not install near any heat sources such as radiators, heat registers, stoves, or other
apparatus (including amplifiers) that produce heat.
9. Do not defeat the safety purpose of the polarized or grounding type plug. A polarized plug
has two blades with one wider than the other. A grounding type plug has two blades and
a third grounding prong. The wide blade or the third prong are provided for your safety. If
the provided plug does not fit into your outlet, consult an electrician for replacement of the
obsolete outlet.
10. Protect the power cord from being walked on or pinched particularly at the plugs,
convenience receptacles, and at the point where they exit from the apparatus.
11. Only use attachments/accessories specified by the manufacturer.
12. Use only with the cart, stand, tripod, bracket, or table specified by the
manufacturer, or sold with the apparatus. When a cart is used, use caution
when moving the cart/apparatus combination to avoid injury from tip-over.
13. Unplug the apparatus during lightening storms, or when unused for long
periods of time.
14. Refer all servicing to qualified personnel. Service is required when the apparatus has
been damaged in any way, such as power supply cord or plug is damaged, liquid has been
spilled or objects have fallen into the apparatus has been exposed to rain or moisture, does
not operate normally, or has been dropped.
15. This appliance shall not be exposed to dripping or splashing water and that no object filled
with liquid such as vases shall be placed on the apparatus.
16. Caution-to prevent electrical shock, match wide blade plug wide slot fully insert.
17. Please keep a good ventilation environment around the entire unit.
18. The direct plug-in adapter is used as disconnect device, the disconnect device shall
remain readily operable.
19. Batteries (battery pack or batteries installed) shall not be exposed to excessive heat such
as sunshine, fire or the like.
20. The AC plug considered as disconnect device of adapter.
5Stage 412: Quad Handheld Wireless System
Introduction
Congratulations on purchasing the Samson Stage 412 Quad Microphone Wireless System! The
Stage 412 system is the perfect solution for any application requiring four high quality, wireless
microphones in an easy to use package. Featuring simple operation, with 12 available channels
and infrared set for the transmitter channel, the Stage 412 can quickly be up and running out
of the box. The system includes the SR412 Quad channel receiver with individual and mixed
outputs. Also included are four VH12 handheld microphone transmitters.
With the Stage 412 system, you’ll have great sound quality with clear reception, and the
ability to walk freely around your venue. For any live sound application (karaoke, presentation,
education, house of worship, etc.) the Stage 412 is the ideal tool for your Quad-performer
needs. The Stage 412 provides outstanding performance and reliability.
Although this product is designed for intuitive operation, we suggest you take some time to
go through these pages to learn how we’ve implemented a number of unique features, and to
get step-by-step instructions for setting up your system. If your Stage 412 was purchased in
the United States, you’ll also find a warranty card enclosed—please don’t forget to follow the
instructions so that you can receive online technical support, and so that we can send you
updated information about this and other Samson products. Also, be sure to check out our
website (www.samsontech.com) for complete information about our full product line.
We recommend that you record your serial number in the space provided below, for future
reference.
Serial number:_______________________________
Date of purchase:____________________________
If you have any questions or comments regarding the Stage 412 Wireless System or any other
products from Samson, do no hesitate to contact us at support@samsontech.com.
With proper care and maintenance, your Stage 412 will operate trouble-free for many years. Should
your Stage 412 ever require servicing, a Return Authorization (RA) number must be obtained before
shipping your unit to Samson. Without this number, the unit will not be accepted. Please visit
www.samsontech.com/ra for an RA number prior to shipping your unit. Please retain the original
packing materials and, if possible, return the unit in its original carton. If your Stage 412 was
purchased outside of the United States, contact your local distributor for warranty details and service
information.
Features
• Professional, Quad-handheld wireless system for use in both live sound and sound
contracting applications
• 6 available frequencies per receiver channel operating in the VHF band designed for
maximum system compatibility in the same location without interference
• Individual receiver (4) 1/4”, mixed pair (2) XLR and all receivers mixed XLR outputs
• Up to 200’ of line-of-sight operating range
• Four professional VH12 handheld transmitters with Q6 Dynamic Microphone capsules
• Up to 10 hours of battery life, using two standard AA batteries
6
SR412 Receiver Front Panel Features
1 2 3 4 44 33
5 3 4 5 55
8 8
76 67 76 67
1. Power Switch - Press to turn the receiver on or off.
2. IR Transmitter - When preforming an “IR SET” for any of the four receivers, an infrared light
is used to set the transmitter channel.
3. Channel SELECT Buttons - Press this button to cycle through each of the four receiver’s
operating channels. Press and hold this button to send the channel information to the
transmitter via the “IR SET” infrared transmission.
4. LED Displays - The 7-segment LED display shows each receiver’s current operating channel.
The channels are indicated by numbers 1–6.
5. Volume Controls - This knob sets the level of the audio signal being output through the
corresponding receiver output jack on the rear panel. Reference level is obtained when the
knob is turned fully clockwise (to its “10” setting).
6. AF Indicators - Lights green when the corresponding VH12 transmitter is powered on, and
there is an audio signal present and detected by the receiver. The indicator lights red when
the transmitted audio signal is overloaded.
7. RF Indicators - Lights orange when the corresponding VH12 transmitter is powered on, and
there is an RF signal present and detected by the receiver.
8. Channel Labels - The channel label designates the frequency group. The label color
matches the label color on the bottom of the corresponding handheld microphone
transmitter.
7Stage 412: Quad Handheld Wireless System
SR412 Receiver Rear Panel Features
2 5 6
41
3 33 3
1
1. Antenna - The antenna mountings allow full rotation for optimum placement. In normal
operation, both antennas should be placed in a vertical position. The antennas can be
folded down for convenience when transporting the SR412.
2. POWER DC IN - Connect the supplied 15-volt adapter here.
WARNING: Do not substitute any other kind of power adapter. Doing so can cause damage
to the SR412 and will void your warranty.
3. Unbalanced Outputs - Use the unbalanced, 1/4” jacks to connect the individual SR412
receivers to the line level inputs of a mixer, amplifier, or other audio equipment.
4. CHANNELS A & B Mixed Output -
This balanced, low impedance XLR jack carries a mix of
both the Channel A and Channel B receivers.
5. CHANNELS C & D Mixed Output - This balanced, low impedance XLR jack carries a mix of
both the Channel C and Channel D receivers.
6. MIXED OUT ALL CHANNELS - This balanced, low impedance XLR jack carries a mix of all four
receivers.
8
VH12 Transmitter Controls and Features
1. Status Indicator - This LED displays the
operation mode:
GREEN Normal Operation
RED Mute
Flashing GREEN Low Battery
2. Power/Mute Switch - Press and hold to turn the
unit on or off. Press and release to mute or
unmute the transmitter.
3. Battery Cover - Unscrew the battery cover
and slide down to open the VH12 battery
compartment.
4. Battery Holder - Open the battery holder by
pressing the tab and lifting the cover. Insert
two standard AA (LR6) batteries here, being
sure to observe the plus and minus polarity
markings shown.
WARNING: Do not insert the batteries
backwards; doing so can cause severe damage
to the VH12 and will void your warranty.
5. Input GAIN Control - This control adjusts the
transmitter input sensitivity. For optimal
performance, using the included screwdriver,
set the input GAIN control to where you see
the VH12 PEAK indicator start to light under
high levels, then turn down until the PEAK
light stops lighting.
6. IR Lens - This window is used to capture the
infrared signal sent from the VH12 during
the IR SET to channelize the transmitter. The
battery cover must be open and the IR Lens
facing towards the receiver to load the selected
channel.
7. Plastic Screwdriver - Designed for use in
adjusting the VH12 input GAIN control (See
#5 Input GAIN Control).
9Stage 412: Quad Handheld Wireless System
Quick Start
In order for your wireless system to work correctly, both the receiver and transmitters must be set to
the same channel.
Follow this basic procedure for setting up and using your Stage 412 wireless system:
Physically place the SR412 receiver where it will be used, and fully extend the antennas
vertically. The general rule of thumb is to maintain “line of sight” between the receiver and
transmitter so that the person using or wearing the transmitter can see the receiver.
With the SR412 powered off, connect the included power adapter. Turn the SR412 on
momentarily to confirm that the unit is receiving power. You’ll see the LED displays light up.
Then turn the SR412 power off.
With your amplifier or mixer off and volume control all the way down, connect the SR412 receiver
XLR Mix Outputs or individual reciever 1/4” outputs or to the inputs of a mixer or amplifier. Turn
the Level knob on the SR412 completely counterclockwise, then turn its power on.
10
Quick Start
With the transmitter powered off, install two fresh AA batteries into VH12 handheld transmitter.
Leave the battery compartment open.
Turn on the power to the transmitter by pressing and holding Power switch; the indicator LED
will light green.
Press the CH A SELECT button on the front of the SR412 to choose an available channel for
the CH A receiver. The channel number will increase by one digit, from 1–6. Once the last
channel has been reached, the count will cycle back to 1.
11Stage 412: Quad Handheld Wireless System
Quick Start
Position the VH12 transmitter about 6-12" (15-30 cm) from the front of the SR412 receiver
with the transmitter's IR window facing the IR transmitter on the front panel of the SR412
receiver.
Press and hold the SR412 CH A SELECT button to set the transmitter to the same channel as
the receiver via infrared transmission.
When the transmission is complete, the SR412 will receive RF signal and the tone-key (for
more about tone-key read the section titled “All about squelch”) from the transmitter. The CH A
READY indicator will light on the front panel of the SR412 receiver. Repeat these steps for the
remaining transmitters and receivers. The four receivers available frequency channels do not
overlap, so you can set the four receivers to the same channel number.
Turn on your connected amplifier or mixer, but keep the volume all the way down. Set the
Volume knob on the SR412 fully clockwise (to its “10” setting). This is unity gain.
Speak or sing into the microphone. Slowly raise the volume of your amplifier or mixer until the
desired level is reached.
If you find the system has noticeable dropouts, reduced overall working range, or unexpected
noise bursts, change the operating channel of the system using the steps above.
When using multiple systems in the same frequency band, each system must be set to a different
operating channel.
12
Specifications
System Specifications
Operating Frequency VHF 173 MHz to 198 MHz
Number of Frequencies per Channel 6
Frequency Stability ±0.005%
Modulation Mode FM
Maximum Deviation ±30 kHz
Operating Range 200’ / 60m
Operating Temperature Range 40° to 43°
Working Humidity 65±20%RH
Frequency Response 80 Hz to 15 kHz
Tone Key Frequency 30.00 kHz
SR412 Receiver Specifications:
Image Rejection 35 dB
Dynamic Range 100 dB
Maximum Output 1.37 V
Sensitivity -100 dBm @ 30 dB SINAD
Output Connectors Two 1/4” (6.3 mm) unbalanced, Three XLR balanced
Audio Output Levels -12dB
Power Supply 100-240V, 50/60Hz, 0.4A, Output: DC 15V, 800mA
Dimensions 16.92” x 6.7” x 1.57” / 430 mm x 170 mm x 40 mm
Net Weight 3.08 lb / 1.4 kg
VH12 Transmitter Specifications
RF Power Output 10mW
Microphone Element Q6 Dynamic
Typical Battery Life 12 hours
Current Consumption 120 mA typical
Dimensions ø2.16” x 10” / ø55 mm x 255 mm
Net Weight 0.48 lb / 0.22 kg
At Samson, we are continually improving our products, therefore specifications and
images are subject to change without notice.
13Stage 412: Quad Handheld Wireless System
All about squelch
Squelch (or muting) circuitry acts to silence the audio output of the receiver whenever the
desired RF signal is not present. If such circuitry is not present, the receiver may output a
different signal—or even extremely unpleasant white noise—whenever the RF signal is lost
due to dropout or excessive distance, or when the transmitter is turned off. This is due to a
phenomenon known as the capture effect (sometimes called capture ratio), which describes
the fact that an FM receiver is constantly seeking RF signal and will always utilize the strongest
signal of a particular frequency that it locates (with the strongest signal always suppressing
weaker signals of the same or nearly same frequency).
To combat this, there are several kinds of squelch circuits used by wireless systems. The most
basic kind, called carrier squelch, simply sets an RF signal threshold; when signals drop below
this threshold, the audio output is muted.
Another, more advanced design, called noise squelch, carries out an automatic comparison
of the incoming RF signal to a reference voltage (generally 200 kHz or higher) in order to
determine whether it is valid signal or simply radio noise (which has much greater high
frequency energy than valid signal), muting the audio output when noise is detected.
A third kind is called tone squelch (sometimes called “tone-key” or “tone-code” squelching).
The Stage 412 system features this method of squelch. Here, the transmitters add a supersonic
tone to all audio signals they transmit, with the receivers refusing to pass through any received
audio signal that does not contain this tone.
14
Troubleshooting
Issue Solutions
Turn on the VH12 transmitter using the Power/Mutr switch.
Ensure the VH12 transmitter’s batteries are installed correctly.
Confirm that the SR412 adaptor is correctly connected and
plugged into an electrical outlet.
No Audio
Distorted Audio
Audio Dropout
Transmitters and
Receiver on Different
Channels
Turn on the SR412 receiver.
Make sure the SR412 output and audio input connections are
securely connected.
Ensure that the SR412 receiver and VH12 transmitters are in line
of sight with one another.
Check the receiver and audio input device level controls.
Check the receiver output level and audio input device level.
Check the VH12’s batteries and replace if low.
Another transmitter may be broadcasting on the same channel.
Turn off transmitter that may be causing interference.
The transmitter may be too far away from the receiver. Move
closer to the receiver, or reposition the antennas.
Remove any sources that may cause RF interference, such as cell
phones, cordless phones, lighting equipment, computers, etc.
Contact your Samson reseller or distributor for assistance.
15Stage 412: Quad Handheld Wireless System
Samson Technologies
278-B Duffy Ave
Hicksville, NY 11801
Phone: 1-800-3-SAMSON
www.samsontech.com
Loading...