OWI MC4-D User manual

Model MC4-D or MC4-BT
MEDIA CONTROL by OWI
Installation Instructions
Media Control 4-Channel Audio Mixer
Fits on a double gang American electrical box
Established 1978
OWI Incorporated
17141 Kingsview Ave. Carson CA 90746 USA
Tel. [phone]
www.owi-inc.com
Technical Support: 310-515-1900

Filename:MC4-BT MANUAL
01/26//18
Page 2 of 6
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK
DO NOT REMOVE COVER (OR BACK)
NO USER-SERVICEABLE PARTS INSIDE
REFER SERVICING TO QUALIFIED PERSONNEL
The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of
uninsulated "dangerous voltage" within the product's enclosure that may be of sufficient magnitude to constitute a risk
of electric shock to persons.
The exclamation point within an equilateral triangle is intended to alert the user of the presence of important operating
and maintenance (servicing) instructions in the literature accompanying the appliance.
The apparatus shall not be exposed to dripping or splashing and that no objects filled with liquids, such as vases, shall be
placed on the apparatus.
IMPORTANT SAFETY INSTRUCTIONS
1. Read these instructions - All the safety and operation instructions should be read before this OWI product is operated.
2. Keep these instructions - The safety and operating instructions should be kept for future reference.
3. Heed all warnings - All warnings on this product and in these operating instructions should be followed.
4. Follow all instructions - All operating and other instructions should be followed.
5. Do not use this apparatus near water - for example, near a bathtub, washbowl, kitchen sink, laundry tub, in a wet basement, near
a swimming pool, swamp or salivating St. Bernard dog, etc.
6. Clean only with dry cloth.
7. Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions. - This OWI product should
be situated so that its location or position does not interfere with its proper ventilation. For example, the Component should not be
situated on a bed, sofa, rug, or similar surface that may block any ventilation openings, or placed in a built-in installation such as a
bookcase or cabinet that may impede the flow of air through ventilation openings.
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 wider 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 plugs, convenience receptacles, and the point where they exit
the apparatus.
11. Only use attachment/accessories specified by the manufactures.
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 this apparatus during lightning storms or when unused for long periods of time.
14. Refer all servicing to qualified service personnel. Servicing 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, the apparatus has been
exposed to rain or moisture, does not operate normally, or has been dropped. The user should not attempt to service this OWI product
beyond those means described in this operating manual. All other servicing should be referred to the OWI Service Department.
15. To reduce the risk of fire or electric shock, do not expose this apparatus to rain or moisture.
16. To prevent electric shock, do not use this polarized plug with an extension cord, receptacle or other outlet unless the blades
can be fully inserted to prevent blade exposure.
17. Exposure to extremely high noise levels may cause permanent hearing loss. Individuals vary considerably in susceptibility to
noise-induced hearing loss, but nearly everyone will lose some hearing if exposed to sufficiently intense noise for a period of time.
The U.S. Government's Occupational Safety and Health Administration (OSHA) has specified the permissible noise level exposures
shown in the following chart.

Filename:MC4-BT MANUAL
01/26//18
Page 3 of 6
According to OSHA, any exposure in excess of these permissible limits could result in some hearing loss. To ensure against
potentially dangerous exposure to high sound pressure levels, it is recommended that all persons exposed to equipment capable of
producing high sound pressure levels use hearing protectors while the equipment is in operation. Ear plugs or protectors in the ear
canals or over the ears must be worn when operating the equipment in order to prevent a permanent hearing loss if exposure is in
excess of the limits set forth here.
18. OWI recommends that this apparatus is to be placed on a switched power outlet, one that switches both sides of the line and
has contact separation of at least 3mm.
Installation Instructions
Media Control
Model MC4-BT
MC4-BT carton includes the followin
g
items:
One (1) each MC4-BT (Media Control Mixer)
One (1) each 15V DC, Level V, UL Listed Power Suppl
y
Four (4) each 6:32 Truss head screws
Four (4) each plastic washers
Introduction:
Congratulations on purchasing the Media Control MC4-BT by OWI.
A double gang electrical box four channel Audio mixer, the MC4-BT will allow either Line, Mic, optical level
inputs on designated channel. It has an additional four set of level controls to provide a fixed secondary output
not effected by any of the changes on the front panel level input controls. Typical uses of the secondary output
would be “Hard of hearing”, “Room combiner” or priority feed that is not affected by input controls.
Specifications:
Two Gang Electrical box, Four Channel Mixer with both Microphone and Line Audio Mixer
Power 15 Volts DC
Current 170 mils
Channels Four plus a Bluetooth Input
Voltage Levels Line (-14 to +4dBm)
Outputs Three (3)
Output Types Balanced on Euro Block, unbalanced 3.5 stereo minijack (dual
mono Signal), RJ45 for OWI Amplified speakers only
Input types 2 ea. Front panel 3.5mm stereo Jacks
Input # 1 - 3.5mm stereo Jack
Input # 2 - 3.5mm stereo Jack
Input # 3 - balanced input (Mic or line selected)
Input # 4 – Optical Toslink
Input # Bluetooth - Wireless
Input Control Input # 1 - 3.5mm stereo Jack
Input # 2 - 3.5mm stereo Jack
Input # 3 - balanced input (Mic or line selected)
Input # 4 – Optical Toslink / Bluetooth - Wireless

Filename:MC4-BT MANUAL
01/26//18
Page 4 of 6
Four Sliders provide easily seen level controls for selectable either line level or microphone level inputs.
The MC4-BT provides 2 convenient front panel 3.5 mini stereo jack inputs on channels 1 and 2. The two
jacks are stereo and combine to mono at the jack.

Filename:MC4-BT MANUAL
01/26//18
Page 5 of 6
A. Input #1 (3.5 mini stereo input) – A1 - Gain/level control for input #1 A
B. Input #2 (3.5 mini stereo input) – B1 – Gain/level control for input #2 B
C. Input #3 (balanced line input) – C1 – Gain/level control for input #3 C
D. Input #4 – Digital Toslink
E. Bluetooth (optional) - E1 - Pair button for Bluetooth
F. Volume selection digital Toslink or Bluetooth
G. Priority override selector for 3.5 mini on #1 or Bluetooth
G1. Priority override sensitivity control
H. Power input – 15V DV
J. Input #3 Selector (microphone/line level)
J1. Gain/level control for C
K. 3.5 Mini jack – Dual Mono signal output
K1. Gain/level control for K
L. Balanced Line Level output
L1. Gain/level control for L
M. CAT5 output to OWI AMP Speakers only
A convenient Mic and Line switch (J) is accessible from the rear allowing Channel 3 to be assigned to either
Line or Mic level input. Line is to the right and Mic is to the left.
Input # 3 is balanced input with detachable Euro style three pin connectors. When single ended is required, -
and ground are jumped together and + is tied to the hot wire.
The Main Audio Outputs
a) Unbalanced output (K) is a 3.5 mini jack output which has volume control (K1) for the main level
b) balanced output (L) is a green Euro Style output which has a volume control (L1) for its main level
c) Cat 5 output (M) is a RJ45 Jack which has a volume control (L1) for its own main level
The RJ45 connector allows for a quick hook up for Output and power are all hooked up with a single 8 pin
connector. Looking at the RJ45 from the left is pins –
Four (4) trim controls (1) for the front panel slide controls.
Bluetooth Setup, Connection, and Pairing –
Bluetooth SETUP to your device:
1) Push and hold pairing button (E1) for 3 seconds to wake up the Bluetooth module. The light will start
flashing
2) Push/Tap the pairing button (E1) once again quickly – now the module is in paring mode (fast blinks)
3) Use your device to search for (OWI MC4) and connect.
4) There is no code to pair to the unit
Re-connect the device to the MC4-BT:
1) Push and hold pairing button (E1) for 3 seconds to wake up the Bluetooth module
2) search for (OWI MC4) on your device and connect.
Priority Override features –
Priority override selector for 3.5 mini on #1 or Bluetooth (G)
This will allow either the Bluetooth or the 3.5 Minijack to have priority over the input.

Filename:MC4-BT MANUAL
01/26//18
Page 6 of 6
If you want Bluetooth to have Priority, Slide the slider to the BT selection and it will have priority over the 3.5
mini jack.
If you want the 3.5 minijack to have priority over the Bluetooth slide the slider switch down to the Input # 1
position.
Once you have chosen the priority adjust the Priority override sensitivity control (G1)
Please note that the Bluetooth signal must be turned up the entire way to send enough signal to trigger the
override module.
4 audio inputs: 3.5 mini jack, Balanced input, TosLink, Bluetooth (optional)
The Normal input accepts an unbalanced input via a 3.5 Mini Jack. 1 Balanced input via a Phoenix style screw terminal plug.
Input 3 can be microphone level or line level, set by ( ). The line level can range from -20dBu to 0dBu. The microphone level input
can be -40dBu. The minijack can accept mono or stereo inputs. The stereo channels are summed together. This audio is adjusted with
potentiometer adjacent by each “Input”.
Priority Override Feature
The Priority input accepts balanced input levels of jumper selected 100 volts audio, 70 volts audio, 25 volts audio and 1volt
(approximately line level) audio. Audio on the Priority input suspends audio on the Normal or Auxiliary input and switches the
speaker amplifier to pass the Priority audio (A8). After the Priority audio stops, the unit waits a selectable time delay before returning
to the Normal or Auxiliary audio input. The delay is computer settable via RS232 from 5 to 60 seconds. With an adapter, the USB
connector on a computer can be used to set the delay.
Balanced Line Level Output
A nominal 0dB level, balanced output ( ) is available. The audio output is post-master fader. The master (Master Volume)
fader is on the face per source.
Microphone Wireless Microphone / “Auxiliary Input” A 3.5mm connector is available to connect an infrared receiver. This
receiver picks up an infrared signal from a special wireless microphone. The wireless microphone is interrupted by priority audio.
There is a level adjustment pot on the circuit board to balance the microphone audio level against other audio input levels. Any line
level may be input here.

Filename:MC4-BT MANUAL
01/26//18
Page 7 of 6
LIMITED WARRANTY
1. The Media Control MC4 series has been thoroughly tested and inspected at the factory. It is warranted for one (1) year from
date of purchase.
IT IS THE OWNERS’ RESPONSIBILITY TO ESTABLISH THE DATE OF PURCHASE BY ACCEPTABLE EVIDENCE
AT TIME SERVICE IS SOUGHT.
2. Any unit, which in the judgment of OWI INC. is defective or develops defects under normal use will be replaced or repaired
without cost within the warranty period.
3. This warranty will be considered void if unit has been dropped, misused, abused, altered in any manner, overdriven with
excessive amplification exceeding manufacturer’s specification, improperly serviced or accidental damage.
4. OWI Inc. shall have no liability whatsoever for consequential damage. The sole responsibility and discretion of OWI Inc. under
this warranty shall be limited to the repair of the product or replacement thereof.
5. IMPORTANT: This warranty is void unless the attached card is completed and mailed to OWI Inc. within 10 days following
the date of purchase. Units must be sent to OWI Inc. or to the dealer where purchased.
6.
OWI INCORPORATED Date Purchased: _____________________
17141 Kingsview Ave Model Number: _____________________
Carson, CA 90746 Serial Number: _____________________
(Keep this part for your record)
-----------CUT AND MAIL-----------------------------------------------------------------------------------------------------------
OWI INCORPORATED
17141 Kingsview Ave
Carson, CA 90746
LIMITED WARRANTY
Model Number: _______________________________________________
Model Name: ________________________________________________
Serial No.____________________________________________________
Date of Purchase: Month: ________________ Day _____ Year _________
Owner’s Name: _______________________________________________
Address: ________________________________________________
City: __________________________ State _______ Zip__________
Dealer’s Name: _____________________ City___________ State ______
Purchased from (please check one):
Video __, Electronic __, Mail Order __, Mass Merchandiser __, Installer __
Others (please specify) __________________________________________
Remarks: _____________________________________________________
_____________________________________________________