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1.

SAFETY INSTRUCTIONS

1. READ INSTRUCTIONS - All safety and operating instructions should be read before this product is operated.

2. RETAIN INSTRUCTIONS - The safety and operating instructions should be retained for future reference.

3. HEED WARNINGS - All warnings on this product and in the operating instructions should be adhered to.

4. FOLLOW INSTRUCTIONS - All operating and use instructions should be followed.

5. ATTACHMENTS - Do not use attachments not recommended by the product manufacturer as they may cause hazards.

6. WATER AND MOISTURE - Do not use this product near water - for example, near a bathtub, washbowl, kitchen sink, 

or laundry tub; in a wet basement; or near a swimming pool; and the like.

7. ACCESSORIES - Do not place this product on an unstable cart, stand, tripod, bracket, or table. The product may fall,

causing serious injury to a child or adult, and serious damage to the product. Use only with accessories recommended 
by the manufacturer, or sold with the product. Any mounting of the product should follow the manufacturer's instructions 
and should use a mounting accessory recommended by the manufacturer.

8. POWER SOURCE - This product should be operated only from the type of power source indicated on the marking label. If 

you are unsure of the type of power supply to your home, consult your product dealer or local power company.

9. OVERLOADING - Do not overload wall outlets or extension cords as this can result in a risk of fire or electric shock.

10. LIQUID ENTRY - Never spill any liquid of any kind on the product.

11. SERVICING - Do not attempt to service this product yourself. Opening or removing covers, including any over bottom or 

side speaker drivers, may expose you to dangerous voltage or other hazards. Refer all service to qualified service
personnel.

12. DAMAGE REQUIRING SERVICE - Unplug this product from the wall outlet and refer servicing to qualified personnel under

the following conditions:

•When the power-supply cord or plug is damaged.
•If liquid has been spilled, or objects have fallen into this product.
•If the product does not operate normally by following the operating instructions. Adjust only controls that are covered by the 

operating instructions as an improper adjustment of other controls may result in damage and will often require extensive 
work by a qualified technician to restore the product to its normal operation.

•If the product has been dropped or damaged in any way.
•When the product exhibits a distinct change in performance - this indicates a need for service.

13. REPLACEMENT PARTS - When replacement parts are required be sure the service technician has used replacement part 

specified by the manufacturer or have the same characteristics as the original part. Unauthorized substitutions may result in 
risk of fire, electric shock, or other hazard.

14. SAFETY CHECK - Upon completion of any service or repairs to this product, ask the service technician to perform safety 

checks to determine that the product is in proper operating condition.

15. HEAT - This product should be situated away from heat sources such as radiators, heat registers, stoves, or other products 

(including amplifiers) that produce heat.

The exclamation point within an
equilateral triangle is intended to
alert the user of the presence of
important operating and mainte-
nance (servicing) instructions in
the literature accompanying the
appliance.

CAUTION:

TO PREVENT THE RISK OF ELECTRIC SHOCK,

DO NOT REMOVE COVER (OR BACK). NO USER-

SERVICEABLE PARTS INSIDE. REFER SERVIC-

ING TO QUALIFIED SERVICE PERSONNEL.

The lightning flash with arrowhead,
within an equilateral triangle, is
intended to alert the user of the
presence of uninsulated “dangerous
voltage” within the product's enclo-
sure that may be of sufficient magni-
tude to constitute a risk of electric
shock to persons.

Bass Management Controller

3

Summary of Contents for LFE-4

Page 1: ...LFE 4 Miller Kreisel Sound Inc 9351 Deering Avenue Chatsworth CA 91311 5858 USA 818 701 7010 fax 818 701 0369 www mkprofessional com 2003 Miller Kreisel Sound Inc bass management operation manual...

Page 2: ...FOR STEREO 8 7 CONNECTING FOR DOLBY DIGITAL 9 8 CONNECTING FOR DTS 10 9 CALIBRATING YOUR M K PROFESSIONAL SYSTEM 11 THE M K PROFESSIONAL TEST DISC 11 10 SPEAKER PLACEMENT 12 ITU R BS 775 1 RECOMMENDAT...

Page 3: ...his product from the wall outlet and refer servicing to qualified personnel under the following conditions When the power supply cord or plug is damaged If liquid has been spilled or objects have fall...

Page 4: ...DTS and other surround sound formats are faced with numerous challenges when trying to accurately monitor complex and dynamic material and determine how this material will sound in its intended playb...

Page 5: ...e Bass management is equally suited to all formats from 2 channel stereo to 5 1 and beyond Indeed existing control rooms that are doing stereo 2 channel mixes especially with smaller nearfield monitor...

Page 6: ...way it will ultimately be played back The LFE 4 together with a properly set up and calibrated M K monitor system allows the mixer to hear his work with more accuracy than might otherwise be possible...

Page 7: ...of the mixer and power amplifiers through the XLR cables In order to minimize the grounding problems between the LFE 4 and equipment racks the internal audio signal ground can be separated from the ch...

Page 8: ...ower amplifiers 5 Locate the external power supply for the LFE 4 and plug it into the 4 pin power connector on the back of the LFE 4 Secure it in place by turning the outer ring clockwise Plug the ext...

Page 9: ...to plus and set the gain switch to the THX position 5 If you are using passive speakers with external amplifiers connect your speaker system to the power amplifiers 6 Locate the external power supply...

Page 10: ...E 4 2 Connect the outputs of LFE 4 to the inputs of your power amplifiers or directly to your powered loudspeakers 3 Connect the mixer output assigned to the low frequency effects channel LFE to the 0...

Page 11: ...el of 4dB with 20dB of headroom the maximum signal level from the source console etc can be 24dB Therefore at very high signal levels you can only add around 3dB of gain with the trim pots before the...

Page 12: ...dation is based on placing the speakers at equal distances around a 2 5 meter circle with the height of each speaker at 1 2 meters The center speaker is placed directly in front of the listener with t...

Page 13: ...eaking it is not a good idea to place the subwoofer directly in the center between the left and right speakers There s usually a null in this location which absorbs low frequencies rather than reinfor...

Page 14: ...off your body and into the microphone Point the meter at the center speaker at about ear height Play track one of the test CD through the selected speaker and read the SPL Adjust the level to 85dB usi...

Page 15: ...ut clipping level 27 dBu Gain Adjustment 12dB THD 1kHz 4 dBu 0 002 LFE Inputs Input impedance 20K ohm balanced Nominal input level 4 dBu Maximum input level 24 dBu Gain Adjustment 12dB Gain 10dB input...

Page 16: ...LFE 4 manual PN 70360 7 08 2003 rev 1 pt qrk...

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