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DLM12S Powered Subwoofer

Placement

The DLM12S subwoofer is designed to sit on the   

floor or stage. It is not designed to be pole-mounted 

 

or suspended.

When pole-mounting loudspeakers, be sure that the 

DLM12S subwoofers are stabilized and secured from 
falling over or being accidentally pushed over. For 
stacked scenarios, it is highly suggested that straps are 
utilized. Failure to follow these precautions may result 
in damage to the equipment, personal injury, or death.

The cabinet has no rigging points and is  
not suitable for rigging. NEVER attempt to  
suspend a DLM12S subwoofer by its handles.

As with any powered components, protect them from 

moisture and extreme cold and follow the other Care 
and Maintenance suggestions below.

The Ins and Outs of Polarity

The Mackie DLM12S subwoofer includes a switch  

that allows you to quickly invert the polarity of the 

 

subwoofer’s output relative to the input signal it is  
receiving from the mixer or other sound source.    
But what exactly does that mean? A subwoofer works  
by literally pumping air as the woofer cone moves in 

 

and out with respect to the cabinet in which it is 
housed. It does so according to the low-frequency 

 

portion of the signal it receives from the sound source.

The woofer cone is simply following the waveform as 

seen in the sine wave in Figure 1. As the sine wave rises, 
the woofer cone pushes out. Likewise, as the sine wave 
falls, the woofer cone pulls into the cabinet. A musical 
signal is much more complex, of course, but the same 
principle applies. Movement of the woofer cone causes 
air pressure changes that we perceive as sound.

When the normal/invert [polarity] switch [5] is 

engaged, the original waveform is simply reversed 180˚ 
[see Figure 2]. Again, the subwoofer cone follows the 
waveform. However, this time the woofer cone starts 
by pulling into the cabinet followed by the woofer cone 
pushing out. If you have ever experimented with a 
subwoofer polarity switch, you may not have noticed  
any changes to the sound regardless of its position, 
especially if you are listening to just the subwoofer. 

 

This is normal, as our ears perceive them both at the 
same time. 

The normal/invert [polarity] switch comes into    

play when the DLM12S subwoofer is paired with a  
loudspeaker. Ideally, the woofer cones of the subwoofer 
and full range loudspeaker would work together by 
pushing and pulling in unison. DLM12S subwoofers are 
designed to be used in a broad range of applications. 
The flexibility provided by the polarity switch is    
necessary to ensure that you are receiving the best   
possible sound from your system, regardless of your 
setup.

Care and Maintenance

Your Mackie subwoofers will provide many years of 

reliable service if you follow these guidelines:

•  Avoid exposing the subwoofers to moisture.  

If they are set up outdoors, be sure they are 
under cover if rain is expected.

•  Avoid exposure to extreme cold (below  

freezing temperatures). If you must operate  
the subwoofers in a cold environment, warm 
up the voice coils slowly by sending a low-level 
signal through them for about 15 minutes prior 
to high-power operation.

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

this when the power is turned off. Avoid getting 
moisture into any of the openings of the 

 

cabinet, particularly where the drivers are 
located.

<–– Time ––>

Figure 1: Normal [0˚]

Amplitude

Amplitude

Figure 2: Invert [180˚]

<–– Time ––>

Polarity Waveforms

Содержание DLM12S

Страница 1: ...OWNER S MANUAL 2000W Powered Subwoofer with DLP Digital Processor DLM12S...

Страница 2: ...cted Consult the dealer or an 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 t...

Страница 3: ...t output compact subwoofer on the market Fit an entire DLM system in nearly any car Stack them up for storage Pole mount a DLM8 or DLM12 Extremely durable 15mm poplar cabinet Rugged powder coated 20 g...

Страница 4: ...tial connections with the power switches OFF on all equipment Make sure the master volume level or gain controls are all the way down 2 Connect the line level outputs from the mixing console or other...

Страница 5: ...L R L UNBALANCED R 0dB 0dBu MAIN METERS R L OL 4 6 3 10 15 7 10 20 30 0 2 BREAK MUTES ALL CHANNELS PHANTOM POWER POWER STEREO GRAPHIC EQ FX SEND MID 2 5kHz MID 2 5kHz MID 2 5kHz MID 2 5kHz MID 2 5kHz...

Страница 6: ...AVIS RISQUE DE CHOC ELECTRIQUE NE PAS OUVRIR TOREDUCETHERISKOFFIREORELECTRIC SHOCK DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE DONOTREMOVECOVER NOUSERSERVICEABLE PARTSINSIDE REFERSERVICINGTOQUAL...

Страница 7: ...there is no additional loading to the inputs when daisy chaining In other words you could conceivably daisy chain DLM subwoofers indefinitely INPUTS FULL RANGE HIGH PASS A B A B STEREO MONO NORMAL INV...

Страница 8: ...T EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE DO NOT REMOVE COVER NO USER SERVICEABLE PARTS INSIDE REFER SERVICING TO QUALIFIED PERSONNEL 1 THRU 2 TRS TRS Line XLR RISK OF ELECTRIC SHOCK DO NOT OPEN AVI...

Страница 9: ...DA 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 U...

Страница 10: ...r The frequency range above 20 Hz 200 Hz is sent to these line level output jacks The frequency range depends on where the crossover XVR 11 is set 7 Full Range Outputs Connect the full range outputs t...

Страница 11: ...cy should be set to the lowest frequency response rating of the main loudspeakers Press the XVR button repeatedly until the desired crossover setting is highlighted DLM8 110 Hz DLM12 90 Hz SRM350 100...

Страница 12: ...tance 13 and use these buttons to save and recall presets 14 17 2000W 2W Switch 1 At Mackie we are always striving to push the envelope dreaming up new awesome products to design in order to expand th...

Страница 13: ...ating a built in thermal switch will activate muting the signal and ramping the fan up to top speed An error message will also appear on the OLED Display When the amplifier has cooled down to a safe o...

Страница 14: ...e changes that we perceive as sound When the normal invert polarity switch 5 is engaged the original waveform is simply reversed 180 see Figure 2 Again the subwoofer cone follows the waveform However...

Страница 15: ...u think your Mackie product has a problem please check out the following troubleshooting tips and do your best to confirm the problem Visit the Support section of our website www mackie com support wh...

Страница 16: ...www mackie com click Support and select Locate a Service Center Service for Mackie products living outside the United States can be obtained through local dealers or distributors If you do not have a...

Страница 17: ...GE Simply plug the signal source i e mixer output into the input jack s and patch that subwoofer s full range jack to the next subwoofers s input jack and so on daisy chaining multiple DLM12S subwoofe...

Страница 18: ...nector 3 pin IEC 250 VAC Safety Features Input Protection Peak and RMS limiting power supply and amplifier thermal protection Display LEDs Defeatable front power ON Front load power limiter Status Inf...

Страница 19: ...SSubwooferDimensions WEIGHT 48 lb 21 7kg 16 4 in 417 mm 20 8 in 529 mm 17 9 in 455 mm DLM12SSubwooferFrequencyResponse Frequency Response Hz 20 80 90 100 50 100 200 500 dB SPL Legend DLM8 DLM12 SRM350...

Страница 20: ...rocessing DAC DAC Comp Lim High Pass Outputs XOver B A B XOver ADC Fader XOver A B Full Range Outputs ANALOG BUS A B ADC HARDWIRE BUS A B DIGITAL BUS A B Limit Limit Mono Stereo DISPLAY USER CONTROLS...

Страница 21: ...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 hou...

Страница 22: ...DLM12S Powered Subwoofer 22 DLM12S Powered Subwoofer 16220 Wood Red Road NE Woodinville WA 98072 USA Phone 425 487 4333 Toll free 800 898 3211 Fax 425 487 4337 www mackie com...

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