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MR5mk2

MR5mk2

Protection Circuits

Input Signal Wiring

You should use high-quality, shielded cable to connect 

the signal source to the signal input jack [1] on the 
MR5mk2. 

•  For balanced signals, foil shielded cables, such as 

Belden 8451, 8761, or 9501 are commonly used for 
studio wiring.

•  Microphone cables work well for the XLR input.
•  The better the shield, the better the immunity from 

externally induced noise (like EMI and RFI). Route the 
cable away from AC power cords and outlets. These are 
common sources for hum in an audio signal. Wall warts 
and line lumps are especially insidious hum inducers!

  Quality cables may be purchased from Mackie dealers. 

• 

In certain home theater applications, it may be necessary 
to connect the speaker outputs from a stereo receiver to 
the inputs of the MR5mk2, if the receiver doesn’t have 
preamp outputs or other line-level output connections.

CAUTION:

 Do not attempt to connect a 

speaker output directly to the input of the 
MR5mk2! Speaker levels are much higher 

than line levels and can damage the input circuitry in 
the MR5mk2.

However, it is possible to insert a speaker-level to 

line-level signal attenuator between the receiver’s 
speaker output and the MR5mk2’s input. The local 
Mackie dealer should be able to assist, or you can build 
your own.

Care and Cleaning

Mackie Reference Studio Monitors will provide many 

years of reliable service if you follow these guidelines.

•  Avoid exposing the monitors to moisture.
•  Avoid exposure to extreme cold (below freezing  

temperatures).

•  Use a dry cloth to clean the cabinets. Only do this when 

the power is turned off.

There are several protection mechanisms designed 

into the MR5mk2 to safeguard the loudspeakers and 
amplifiers from inadvertent damage.

CAUTION:

 The protection circuits are  

designed to prevent damage to the  
loudspeakers under reasonable and sensible 

conditions. Should you choose to ignore the warning 
signs (i.e., excessive distortion), you can still damage 
the speakers in the MR5mk2 by overdriving them. Such 
damage is beyond the scope of the warranty.

Overexcursion Protection

A 12 dB/octave high-pass filter at 50 Hz just prior to 

the low-frequency amplifier prevents very low  

 

frequencies from being amplified. Excessive  
low-frequency energy below 50 Hz can damage the 
woofer by causing it to “bottom out,” also known as 
overexcursion, which is equivalent to a mechanical form 
of clipping.

Thermal Protection

All amplifiers produce heat. The MR5mk2 is designed 

to be efficient both electrically and thermally.

•   If for some reason the heatsink gets too hot, a thermal 

switch activates and turns off the amplifier. This  
protection operates independently for the  

 

low-frequency and high-frequency amplifiers. Therefore, 
it is possible for only the low frequency or high  
frequency amplifier to shut down while the other 
remains on.

•   When the heatsink cools down to a safe temperature, 

the thermal switch resets and normal operation  
resumes.

•   If the heatsink temperature again gets too hot, the  

shutdown process repeats. Should this happen, make 
sure that airflow to the rear of the cabinet is not  
restricted. 

Integrated Magnetic Shielding

The MR5mk2 contains drivers with large magnetic 

structures. The drivers’ magnets are shielded to help 
prevent the magnetic field from radiating out into the 
environment and playing havoc with computer monitors 
or TV screens. Unshielded speakers can cause  
distortion in both the shape and color of the picture 
if placed too close to a CRT (cathode ray tube). If you 
have a particularly sensitive computer monitor or TV 
screen, it may be necessary to move the speakers a few 
inches away.

Содержание mr5mk2

Страница 1: ...OWNER S MANUAL High Resolution Powered Studio Monitor MR5mk2 ...

Страница 2: ...experienced radio TV technician for help CAUTION Changes or modifications to this device not expressly approved by LOUD Technologies Inc could void the user s authority to operate the equipment under FCC rules 21 This apparatus does not exceed the Class A Class B whichever is applicable limits for radio noise emissions from digital apparatus as set out in the radio interference regulations of the ...

Страница 3: ... hazardous substances that are generally associated with EEE At the same time your cooperation in the correct disposal of this product will contribute to the effective usage of natural resources For more information about where you can drop off your waste equipment for recycling please contact your local city office waste authority or your household waste disposal service Contents MR5mk2 Features ...

Страница 4: ...ssional monitoring system The completely re voiced MR5mk2 features all new high end drivers and provides unmatched frequency response performance in its category The MR5mk2 s precision Class A B amplification 55W LF 30W HF offers class leading power tons of connection options and simple acoustic controls for room correction Plus an optimally sized custom waveguide and minimum diffraction molded ba...

Страница 5: ...sponse in a room that s optimized for bass reproduction A lot of factors can conspire to thwart the MR5mk2s extended low frequency including room shape room volume and acoustical treatment This is not a cop out or an apology It s plain old physics in action Luckily we ve armed you with some compensating controls that you can use to optimize the frequency response of the speakers in your particular...

Страница 6: ... of input connectors XLR 1 4 inch and RCA Since all three of them are connected together electrically do not connect more than one signal at a time to the input jacks The XLR connector and 1 4 inch TRS tip ring sleeve connector accept a balanced signal while the RCA connector accepts an unbalanced signal A balanced signal provides better noise rejection and is the preferred method especially if us...

Страница 7: ...the characteristics of the woofer to produce low frequency extension Conversely if the mixes are consistently too bright then adding some additional high frequency energy in the monitors satisfies your ears and the resultant mix has less HF content It s a real rush to mix really loud But remember that the resulting mix only sounds good when you play it at least that loud However strange it may sou...

Страница 8: ...ers from inadvertent damage CAUTION The protection circuits are designed to prevent damage to the loudspeakers under reasonable and sensible conditions Should you choose to ignore the warning signs i e excessive distortion you can still damage the speakers in the MR5mk2 by overdriving them Such damage is beyond the scope of the warranty OverexcursionProtection A 12 dB octave high pass filter at 50...

Страница 9: ...ted near AC cables power transformers or other EMI sources including wall warts and line lumps These sources usually produce hum Is there a light dimmer or other triac based device on the same AC circuit as the monitor Dimmers cause buzzing noises Use an AC line filter or plug the monitor into a different AC circuit Excessive hiss is an indication of an incorrect gain setting somewhere before the ...

Страница 10: ... Support department at 1 800 898 3211 normal business hours Pacific Time to explain the problem They will tell you where the nearest factory authorized service center is located in your area Service for Mackie products living outside the United States can be obtained through local dealers or distributors Need help with your new MR5mk2 Visit www mackie com and click Support to find FAQs manuals and...

Страница 11: ...SLEEVE TIP SLEEVE TIP RING RING TIP SLEEVE RING 1 4 TS Phone Plugs and Jacks TS stands for Tip Sleeve the two connections available on a mono 1 4 phone jack or plug They are used for unbalanced signals It is okay to connect an unbalanced 1 4 phone plug into the 1 4 TRS phone jack on the MR5mk2 1 4 TS Unbalanced Wiring Hot Tip Shield Ground Sleeve RCA Plugs and Jacks RCA type plugs also known as ph...

Страница 12: ...e our products by incorporating new and improved materials components and manufacturing methods Therefore we reserve the right to change these specifications at any time without notice MR5mk2 Specifications Acoustic Performance Free Field Frequency Response 50 Hz 20 kHz Sound Pressure Level 1 meter 4 dBu into Balanced Input 104 dB SPL 1m Maximum SPL Per Pair 116 dB SPL 1m Transducers Low Frequency...

Страница 13: ...ged MR5mk2 Block Diagram 2011 LOUD Technologies Inc All Rights Reserved 2 dB 0 2 3 1 2 dB HIGH FREQ XLR BALANCED LINE INPUT RCA UNBALANCED LINE INPUT 1 4 UNBALANCED LINE INPUT INPUT LEVEL CROSSOVER HI FREQ LO FREQ HI FREQUENCY POWER AMPLIFIER HI FREQUENCY DRIVER LO FREQUENCY DRIVER TWEETER HI VDC HI VDC OVEREXCURSION PROTECT LO FREQUENCY POWER AMPLIFIER WOOFER HI VDC LO VDC TOROIDAL POWER TRANSFOR...

Страница 14: ...E 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 TO REDUCETHE RISK OF FIRE OR ELECTRIC SHOCK DO NOT EXPOSETHIS EQUIPMENTTO RAIN OR MOISTURE DO NOT REMOVE COVER NO USER SERVICEABLE PARTS INSIDE REFER SERVICINGTO QUALIFIED PERSONNEL AVIS RISQUE DE CHOC ...

Страница 15: ...vice representative will at its option either repair or replace any such nonconforming product provided that Customer gives notice of the noncompliance within the Warranty Period to the Company at www mackie com support or by calling LOUD technical support at 1 800 898 3211 toll free in the U S and Canada during normal business hours Pacific Time excluding weekends or LOUD holidays Please retain t...

Страница 16: ... Road NE Woodinville WA 98072 USA United States and Canada 800 898 3211 Europe Asia Central and South America 425 487 4333 Middle East and Africa 31 20 654 4000 Fax 425 487 4337 www mackie com E mail sales mackie com ...

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