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Owner’

s Manual

11

Owner’s Manual

Thump18S Subwoofer: Rear Panel Features continued...

7. Level Knob / OL LED

The level knob adjusts the input sensitivity of the  

inputs. This allows signals from the outside world to 
be adjusted to run through each channel at optimal 
internal operating levels. There is –6 dB of gain with the 
knob fully down (off), ramping up to 6 dB of gain fully 
up (max). The level control has no effect on the high 
pass outputs or full range outputs. 

The accompanying OL (overload) indicator  

illuminates red when the amplifier in the Thump18S  
is near the clipping point. It is OK if the OL LED blinks 
occasionally, because this means that the transient 
peaks are just reaching the maximum output of  
the amplifier and you are getting the most out of  
the subwoofer.

However, if the OL LED is blinking frequently  

or continuously, turn down the level control on  
the Thump18S or turn down the signal at its source 
(e.g., the mixing console) until the OL LED blinks  
occasionally or not at all.

8. Normal/Invert Switch [Polarity]

This switch reverses the polarity of the signal going 

into the subwoofer amplifier by 180˚. It has no effect on 
the signal at the outputs.

There is no right or wrong setting for this switch.  

Listen to the overall blend of the subwoofer with    
the rest of the system and select the switch position 
that gives you the best sound for your audience.  
In fact, your system may vary when positioned  

 

differently and in alternate venues. Don’t be afraid  
to experiment with the position of the polarity switch. 
See page 12 for more information.

Questionnaire

There is quite a bit of blank space left over, so why not 

fill it with a questionnaire?

• Beatles or Stones?

• Star Wars or Star Trek?

• Chocolate or vanilla?

• Batman or Superman?

• Dogs or cats?

• Beer or whiskey?

• Pizza or cheeseburger?

• Football or baseball?

• Playstation or Xbox?

• Jimmy Page or Jimi Hendrix?

• Family Guy or South Park?

• Coffee or tea?

• What is your favorite color?

• What is the air-speed velocity of an unladen  

        swallow?

Final Thoughts

The following pages discuss Thump18S placement, an 

in-depth look at polarity, protection circuitry, technical 
information and much more. Check it out!

Summary of Contents for Thump 18S

Page 1: ...OWNER S MANUAL 1200W 18 Powered Subwoofer Thump18S ...

Page 2: ...l installation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications However there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television reception which can be determi...

Page 3: ...nstruction 82 lb 37 2 kg Like us Follow us Watch our dang videos Please write the serial number here for future reference i e insurance claims tech support return authorization make dad proud etc Purchased at Date of purchase Important Safety Instructions 2 Contents 3 Features 3 Introduction 4 How To Use This Manual 4 Getting Started 4 Things To Remember 4 Hookup Diagrams 5 Thump18S Subwoofer Rear...

Page 4: ...line level outputs from the mixing console or other signal source to the XLR inputs on the rear panel of the Thump18S subwoofers 3 Connect the high pass outputs from the Thump18S subwoofers to the inputs of powered loudspeakers or to an amplifier powering passive loudspeakers 4 Connect the supplied AC power cords to the IEC sockets on the rear panel of each subwoofer Plug the other end into an AC ...

Page 5: ...U 15 15 U 15 15 U 15 15 U 20 20 R L 7 8 ST RTN FX RTN EQ 12kHz HI PAN AUX U 15 O O MON FX U 15 O O U 15 FX TO MON FX MASTER U 15 O O O O dB 30 20 10 10 O O 40 50 5 5 U 60 dB 30 20 10 10 O O 40 50 5 5 U 60 dB 30 20 10 10 O O 40 50 5 5 U 60 dB 30 20 10 10 O O 40 50 5 5 U 60 dB 30 20 10 10 O O 40 50 5 5 U 60 dB 30 20 10 10 O O 40 50 5 5 U 60 dB 30 20 10 10 O O 40 50 5 5 U 60 dB 30 20 10 10 O O 40 50 ...

Page 6: ...wd that s groovin and dancin to your fine selection In this example a laptop is connected to the channel 1 and 2 inputs of an Onyx Blackjack and a set of headphones are connected to the phones jack The L R monitor outputs of the Onyx Blackjack are connected directly to the channel A inputs of each Thump18S subwoofer The channel A high pass output of each Thump18S subwoofer is connected directly to...

Page 7: ...woofer input Main Outs Thump18S subwoofers may be daisy chained via the male XLR connector labeled FULL RANGE 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 Thump18S subwoofers See above for a visual representation of daisy chaining ...

Page 8: ...range outputs of these two Thump18S subwoofers are connected directly to the channel A inputs of another set of Thump18S subwoofers Talk about beefy low end and we ve only connected the subs The channel A high pass outputs of the last two Thump18S subwoofers are connected directly to the inputs of the main pair of Thump12 loudspeakers The aux 1 and aux 2 sends from the mixer are connected directly...

Page 9: ...rated by any upstream equipment from coming out of the speakers 3 Power LED When the power switch is turned on and the power cord is connected to an active AC mains supply this LED illuminates green to indicate that the subwoofer is indeed really on The cool green LED on the front of the subwoofer works the same way 4 XLR Inputs Balanced XLR female connectors are provided for the left and right in...

Page 10: ... Connector Pin 1 Shield ground Pin 2 Positive or hot Pin 3 Negative or cold 2 1 SHIELD COLD HOT 3 SHIELD COLD HOT 3 2 1 Balanced XLR Output Connector 6 Full Range Outputs Connect the full range outputs to the inputs of another powered subwoofer powered loudspeakers or to an amplifier powering passive loudspeakers Balanced XLR male connectors are provided for the line level A and B full range outpu...

Page 11: ...nally or not at all 8 Normal Invert Switch Polarity This switch reverses the polarity of the signal going into the subwoofer amplifier by 180 It has no effect on the signal at the outputs There is no right or wrong setting for this switch Listen to the overall blend of the subwoofer with the rest of the system and select the switch position that gives you the best sound for your audience In fact y...

Page 12: ...ve 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 s...

Page 13: ...p18S is designed to be efficient both electrically and thermally In the unlikely event of the amplifier overheating a built in thermal switch will activate muting the signal When the amplifier has cooled down to a safe operating temperature the thermal switch resets itself and the Thump18S subwoofer resumes normal operation If the thermal switch activates try turning down the level control a notch...

Page 14: ...e as short as possible If you think your Thump18S 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 720trees com 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 part with your subwoofer Troubleshooting No p...

Page 15: ...two female XLR inputs Be sure the cables are wired per AES Audio Engineering Society standards Balanced XLR Input Connector Pin 1 Shield Ground Pin 2 Positive or hot Pin 3 Negative or cold Balanced XLR Input Connector 2 3 1 SHIELD COLD HOT SHIELD COLD HOT 3 2 1 BalancedXLROutputConnector There are also four male balanced XLR output connectors on each Thump18S subwoofer two high pass and two full r...

Page 16: ...ply and amplifier thermal protection Display LEDs Front and rear power ON Rear OL limiter Construction Features Cabinet Exterior grade 15 mm plywood Finish Textured black catalyzed polyurethane paint Handles One on each side Physical Properties Height 26 5 in 672 mm Width 22 6 in 573 mm Depth 22 8 in 580 mm Weight 82 lb 37 2 kg Mounting Methods The Thump18S subwoofer is designed to sit on the floo...

Page 17: ... Thump18SSubwooferDimensions Thump18SSubwooferFrequencyResponse 22 6 in 573 mm 22 8 in 580 mm 22 6 in 573 mm 26 5 in 672 mm 26 5 in 672 mm 22 8 in 580 mm WEIGHT 82 lb 37 2 kg Frequency Hz 10 20 dB 10 dB 10 dB 0 dB 100 1000 20000 10000 ...

Page 18: ...Thump18SSubwooferBlockDiagram LEVEL 6dB 6dB Input XLRs High Pass Output XLRs Full Range Output XLRs Crossover OL LED LPF Overexcursion Protection HPF Thermal Monitoring Amp Limiter Polarity Invert Thermal Mute Normal Inverted Gain Crossover HPF Crossover HPF ...

Page 19: ...of the noncompliance within the Warranty Period to the Company at www 720trees com 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 the original dated sales receipt as evidence of the date of purchase You will need it to obtain any warranty service For full terms and co...

Page 20: ...16220 Wood Red Road NE Woodinville WA 98072 USA Phone 425 487 4333 Toll free 800 898 3211 Fax 425 487 4337 www 720trees com ...

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