SM Pro MBC502 User manual

MBC502
500 series Optical compressor
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Operating Manual
V1.1
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SM Pro Audio Page 2 of 11 MBC502 manual
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Contents
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1 Safety instructions .........................................................................................................3
2 Foreword .........................................................................................................................4
2.1 Important Notes: ......................................................................................................4
3 Introduction.....................................................................................................................5
3.1 Unboxing...................................................................................................................5
3.2 Connecting ...............................................................................................................5
4 Optical Compressor .......................................................................................................6
5 Channel controls ............................................................................................................6
5.1 Level..........................................................................................................................6
5.2 Mute...........................................................................................................................6
5.3 Rotary compression control ...................................................................................6
5.4 Rotary attack encoder .............................................................................................6
5.5 Rotary release encoder ........................................................................................... 6
5.6 Master Level ............................................................................................................. 6
5.7 Gain Reduction Display...........................................................................................6
5.8 Compression on/off switch .....................................................................................6
6 Master level.....................................................................................................................7
7 Frequency .......................................................................................................................7
8 Let’s play.........................................................................................................................8
9 Specs...............................................................................................................................8
10 Warranty........................................................................................................................ 9
10.1 Warranty Registration............................................................................................9
10.2 Warranty..................................................................................................................9
10.3 Return Authorization Number...............................................................................9
10.4 Warranty Regulations ............................................................................................9
10.5 Claim for Damages ..............................................................................................10
10.6 Other Warranty Rights.........................................................................................10
11 FCC and CE Regulation .............................................................................................11
12 Correspondence.........................................................................................................11

SM Pro Audio Page 3 of 11 MBC502 Manual
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1Safety instructions
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CAUTION: Please ensure power to your 500 series power chassis is OFF before installing or
removing your 500 series modules. Hot Swapping, (exchanging of 500 series modules with the
power on) is NOT recommended. If the power is on whilst exchanging modules, the pins on the
modules multipin connector may short and burn the regulator. For this reason, hot swapping of
modules is not covered under the SM Pro Audio warranty.
DETAILED SAFETY INSTRUCTIONS:
All safety and operation instructions of this manual should be read and adhered to before
operation.
Retain Instructions:
Please retain all safety and operating instructions for future reference.
Follow instructions:
All operation and user instructions should be followed.
Water, liquid and Moisture:
The appliance should not be used near water, rain or other liquids. Make sure that no liquid can
leak, spill or otherwise seep into the appliance.
Ventilation:
Please place the appliance so no obstacles interfere or impede the flow of air through the
ventilation openings.
Heat:
The appliance should be situated away from other heat sources such as heaters, radiators, ovens,
or other appliances that produce heat.
Power Source:
Make sure your appliance is set to the correct voltage for the country in which it will
be use before switching the device ON.
Grounding and Polarization:
Precautions should be taken so that the grounding or polarization means of an appliance is not
defeated.
Power-Cord Protection:
Power supply cords should be routed so that they are not likely to be walked on, pinched,
damaged, worn, or rubbed by any other device or obstacle.
Cleaning:
The appliance should be cleaned only with a light soft cloth. Do not use any damaging
or corrosive products on the unit.
Periods of inactivity:
The power cord of the appliance should be unplugged from the outlet when left unused
for a long period of time or in case a lightning storm occurs.
Damage Requiring Service:
The appliance should be serviced by qualified service personnel when:
• The power supply cord or the plug has been damaged; or
• Objects have fallen, or liquid has been spilled into the appliance; or
• The appliance has been exposed to rain; or
• The appliance does not appear to operate normally or exhibits a marked change in
performance; or
• The appliance has been dropped, or the enclosure damaged.
Servicing:
The user should not attempt to service the appliance beyond that is described in the Operating
Instructions.
All other servicing should be referred to qualified service personnel.! !

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2Foreword
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Dear Customer,
Thank you for purchasing this SM Pro Audio product. Our MBC502 has been designed as a tool
for use in home & professional studios, P.A. rental companies, Schools and in many other
situations where audio products would be used.
With vast experience in the audio industry over a long period of time, and along with valuable
suggestions from our customers, our engineers have developed a product that we know you will be
satisfied with. We guarantee you uncompromising quality as well as excellent technical and audio
properties at an extremely affordable price.
We hope you enjoy making music with SM Pro Audio!
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2.1 Important Notes:
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Every effort has been made to ensure all information provided in this manual is accurate at the
time of writing.
SM Pro Audio is not liable for any incorrect information contained in this manual and extends no
liabilities in regard to this manual other than those required by local law.
SM Pro Audio may update the contents of this manual at any time without prior notice. The latest
version of this manual is available from the SM Pro Audio website at all times.
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3Introduction
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MBC502 is a 500 series module that occupies 2 slots in your 500 series rack. It is a dual band
optical compressor with a Linkwitz-Riley 4th order (24dB/octave) crossover.
Each channel – low frequency and high frequency offer control over level, compression amount,
attack and release times. Switches allow you to mute one channel so that the other can act as a
filter, with the filters centre frequency determined by the frequency selector knob. The VU meter
displays the master output level, while gain reduction is shown on the LED meters. Last but not
least: The MBC502 audio circuit uses LME49720 ultra-low distortion/low noise Op Amps, for clear,
defined audio input and output quality.
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3.1 Unboxing
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Your SM Pro Audio MBC502 was carefully packed in the factory and the packaging was designed
to protect the unit from rough handling. Nevertheless, we recommend that you carefully examine
the packaging and its contents for any signs of physical damage, which may have occurred in
transit.
If the unit is damaged, please do not return it to us, but notify your dealer and the shipping
company immediately, otherwise claims for damage or replacement may not be granted. Shipping
claims must be made by the consignee.
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3.2 Connecting
The SM Pro Audio MBC502 is a 500 series compatible module, which connects to a 500 series
power chassis via the rear multipin slot. Please ensure the power is off before slotting your
module into your 500 series power chassis.Below is the feature layout of the multipin
connector.
Terminal 1 CHASSIS
2 OUTPUT 1 + (+4 Level)
3 OUTPUT 2 + (-2 Level)
4 OUTPUT -
5 GND
6 STEREO LINK
7 INPUT 2 - (-2 Level)
8 INPUT 1 - (+4 Level)
9 INPUT 2 + (-2 Level)
10 INPUT 1 + (+4 Level)
11 GAIN TRIM RESISTOR
12 +16V DC
13 GND
14 -16V DC
15 +48V DC