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Owner’

s Manual

15

Owner’s Manual

Appendix A: Service Information

Poor bass performance

•  Check the polarity of the connections between the  

    mixer and the subwoofers. You may have your  
    positive and negative connections reversed at one  
    end of one cable, causing one subwoofer to be  
    out-of-phase with the other.

•  Poor bass performance may be the result of bad  

    AC power. See the section titled ‘AC Power’ on  
    the previous page for further details.

Poor sound

•  Is it loud and distorted? Make sure that you’re not  

    overdriving a stage in the signal chain. Verify that  
    all level controls are set properly.

•  Is the input connector plugged completely into  

    the jack? Be sure all connections are secure. 

Noise

•  Make sure all connections to the active  

 

    subwoofers are good and sound.

•  Make sure none of the signal cables are routed  

    near AC cables, power transformers, or other   
    EMI-inducing devices.

•  Is there a light dimmer or other SCR-based device  

    on the same AC circuit as the DLM12S? Use an  
    AC line filter or plug the subwoofer into a  

 

    different AC circuit.

Hum

•  Try disconnecting the cable connected to the   

    input jack. If the noise disappears, it could be  
    a “ground loop,” rather than a problem with the  
    DLM12S subwoofer. Try some of the following  
    troubleshooting ideas:

•  Use balanced connections throughout your system  

    for the best noise rejection.

•  Whenever possible, plug all the audio equipment’s  

    line cords into outlets which share a common  
    ground. The distance between the outlets and the  
    common ground should be as short as possible.

If you 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) 
where you will find lots of useful information such as 
FAQs and other documentation. You may find the answer 
to the problem without having to send your Mackie 
product away.

Troubleshooting

No power

•  Our favorite question: Is it plugged in? Make sure  

    the AC outlet is live [check with a tester or lamp].

•  Our next favorite question: Is the power switch  

    on? If not, try turning it on.

•  Make sure the line cord is securely seated in the  

    line cord socket and plugged all the way into the  
    AC outlet.

•  Is the power LED on the front panel glowing   

    green? If not, make sure the AC outlet is live.   
    If so, refer to “No sound” below.

•  The internal AC line fuse may be blown. This is  

    not a user serviceable part. If you suspect the  
    AC line fuse is blown, please see the "Repair"   
    section next.

No sound

•  Is the input level control for the input source  

    turned all the way down? Verify that all the volume  
    controls in the system are properly adjusted.   
    Look at the level meter to ensure that the mixer  
    is receiving a signal.

•  Is the signal source working? Make sure the    

    connecting cables are in good repair and securely  
    connected at both ends. Make sure the output  
    volume (gain) control on the mixing console is  
    turned up sufficiently to drive the inputs of the  
    speaker.

•  Make sure the mixer does not have a mute on or a  

    processor loop engaged. If you find something like  
    this, make sure the volume/gain is turned down  
    before disengaging the offending switch.

•  Has it shut down? Make sure there is at least   

    six inches of free space behind each DLM  

 

    subwoofer.

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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