Question about Mackie Tapco Th15a Thump Active Loudspeaker

1 Answer

My TH-15A starts making VERY loud crackling noises after a few minutes of being turned on. It does not matter if an XLR cable is plugged in or not, and the volume control does not change the volume of the cracking at all - the only way to fix it is to turn it off. Before the cracking noise starts, the speaker works normally. Even if it is set to a very low volume, the noise starts after a few miuntes. Nothing on the board looks burnt, all the condensators seem fine as well. As I do not have warranty left, I wonder if this is a known issue and if there is any way to fix it? ,,Thank you in advance!

Posted by on

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Mackie Master
  • 2,015 Answers

Buy a canister cold spray and spray on some active components if the noise begins You have a thermical failure in a component on the board can be faltering resistorcircuits or resoldering some active components.

Posted on May 14, 2016

Ad

5 Suggested Answers

Anonymous

SOURCE:

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

Ad
gfxmaxx

mathew ridley

  • 155 Answers

SOURCE: My mackie thump amp will

Crackling is usally one or two things my guess would be bad grounding of the amp or bad connection with the jacks or plug it self try to make it crackle on purpose by jiggling the jacks see if it has any effect on the crackling try to narrow your possibilitys

Posted on May 04, 2011

Testimonial: "ok you think it is an electrical issue and not from the speaker I tried other wires. I believe the place has bad grounding to the outlets. Thank you"

Fred Yearian

  • 5603 Answers

SOURCE: have a low noise like

Make sure you are using BALANCED audio line to the speaker AND your mixer is powered from the SAME receptacle as this speaker. One MAY have to run an extension cord back to the mixer and othe equipment, but this must be done to reduce noise and also for equipment safety. Multiple recepatacles in a building have grounding issues that can generate noise or worse damage equipment due to ground loops. If you DJ mixer does NOT have balanced outputs, use DI boxes so you can use balanced lines to your speakers. Your cables will either be XLR or 1/4 inch TRS types, not just TS type.

Posted on May 14, 2011

Vito Vacirca Jr.

  • 140 Answers

SOURCE: I am trying to run

No there is no special cord. The aux you use for a monitor should be pre fader( that means the signal comes before the volume slider) turn the individual slider all the way down. Talk into the mike at the volume you would be singing at the loudest. Adjust the gain of that chanel up untill the clip light comes on. Now back it down so it dosent come on at your loudest. Now pick the aux you want to use. Turn it up 1/2 way, turn up the master aux send coresponding to the channel aux number 1/2 way you should get sound. If it's too loud turn it down if you need more turn it up. If you have any more questions, give me a call at the shop.

Vito Vacirca Jr.

Pro Line Music

490 Lincoln Highway

Fairless Hills Pa. 19030

215-736-8055

servicedepartmentprolinemusic@comcast.net

prolinemusic@comcast.net

www.prolinemusic.com

Posted on Jul 15, 2011

Marty Machine

  • 1 Answer

SOURCE: TH-15A won't make sound. Comes on, then flashing

I've fixed over 100 of these beasts, hope i can shed light for you all ;-)

The flashing LED indicates the power supply rails (+28v and -28v) are being pulled down to 0volts by a (typical) fault on the amp board, usually means the amplifier chip has faulted (usually the LF amp, but on occasion can also be the HF amp).

Locate the 3wire(red, black, brown) connector that goes between the amp board and the larger power-supply board and disconnect it at the power-supply end. (it's actually hard-wired on the amp board end).

Now switch on the Amp, the LED should now be stable, which has proven you've isolated the fault.

Order a replacement board from Mackie, the part number is on the PCB.
From memory it's something like "002163-00" or something, but now you know what the part number will look like.

Depending what country you're in, Amp boards are around $100.

Enjoy!

Posted on Nov 09, 2011

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

I have loud box artist,channel 2 make a cracklings noise even when my guitar is not plugged in .The cracklings noise takes a while to start getting noisey


With nothing plugged in and the noise still there it most likely the output stage of the amp. If the unit is under warranty - tag it, bag it, and send it back for a new one. If not under warranty, you should remove the chassis and inspect for anything loose and spray the guts with zero residue contact cleaner. Use the cleaner liberally. Usually these output noises are the result of loose or dirty components. Clean all the electronics, put it back together and see if that doesn't get rid of the noise.
Good Luck!
Chad

May 23, 2018 | Music

1 Answer

No power in Mackie TH-15A


i) I assume the fuse you mentioned was in the mains plug - did you also check the fuse in the TH15A mains input socket? This is accessed by pulling out the tab in the bottom section of the socket (below the centre pin). This is a 3.15Amp antisurge fuse, 20mm type.

ii) If this fuse has blown, then replace it & all may be well ...... but if it blows again, then move to step iii).

iii) With mains disconnected, remove rear panel (outer screws) & check the power supply PCB for damaged components, especially R111 & R112 (100ohms). If the latter are burnt or open circuited, then the amplifier module may have blown.

regards, Dave

Aug 20, 2014 | Mackie TH-15A Active DJ Powered THUMP...

1 Answer

Static crackling sounds


Replace the speakers or let it be repaired by some one.their may be rust near the speaker coils.just giv it a try.

Nov 20, 2013 | Yamaha Music

1 Answer

My Mackie Thump TH-15A will not produce any bass. I can get some sound but only from the top tweeter. Whats wrong and how can i fix this?


Could be the crossover has died or the main speaker winding has failed. Open her up and connect on side of the main speaker direct to a 9v battery and then wipe the other wire over the other terminal. If you get a crackling from the speaker then it's likely the crossover, if there is no response at all from the speaker then it is dead and possibly the crossover too.

Sep 23, 2013 | Mackie TH-15A Active DJ Powered THUMP...

1 Answer

My peavy kb300 produces a crackling noise & cuts off intermitently when I raise the volume on all 3 chanels.


Low Voltage power supply regulation issue, particularly with +15V and -15V.

Dec 23, 2011 | Peavey Music

1 Answer

I have 2 th-15a and went i put them to sound together trere is a big humming sound. i dont have a mixer and if i need one witch one should be


Make sure ALL interconnected equipment is powered from the SAME receptacle. Use extension cord if necessaary. Use ONLY balanced interconnecting audio lines as well. You have a ground loop... make sure all power connections are three wire.

Jun 23, 2011 | Mackie TH-15A Active DJ Powered THUMP...

1 Answer

Have a low noise like hum when i turn on thump 15A It doesn t change by moving level but when I plug in anything it s feeding a noisy tale on every signal attack.


Make sure you are using BALANCED audio line to the speaker AND your mixer is powered from the SAME receptacle as this speaker. One MAY have to run an extension cord back to the mixer and othe equipment, but this must be done to reduce noise and also for equipment safety. Multiple recepatacles in a building have grounding issues that can generate noise or worse damage equipment due to ground loops. If you DJ mixer does NOT have balanced outputs, use DI boxes so you can use balanced lines to your speakers. Your cables will either be XLR or 1/4 inch TRS types, not just TS type.

May 14, 2011 | Mackie TH-15A Active DJ Powered THUMP...

1 Answer

My mackie thump amp will start to have a loud cracking sound. The cracking goes away if I have the input line unplugged from the speaker but with it plugged in it has the cracking sound and it does not...


Crackling is usally one or two things my guess would be bad grounding of the amp or bad connection with the jacks or plug it self try to make it crackle on purpose by jiggling the jacks see if it has any effect on the crackling try to narrow your possibilitys

May 04, 2011 | Mackie TH-15A Active DJ Powered THUMP...

1 Answer

My Korg c15s has a lot of grating staticky noises when played ....I'm told it cannot be repaired as Korg no longer makes parts for this model?


I have a Korg C-15s and also experiencing loud crackling sounds when I turn it on. The problems seems to be either the sliding volume control or the amplifier itself. Honestly though, I believe the issue is the volume control. I opened my piano to get a closer look and attempted to clean the contacts on the volume. Unfortunately after cleaning the contacts, the crackling sounds became somewhat worse. After I turn the piano on, the volume control is generally rendered useless......volume set to low volume and the noise is quite loud and other times the volume control is set high and get very low volume crackling noise. No real consistency. The noise does diminish after a few minutes but so does the piano sounds to an inaudible level. There were a couple of instances where I turned it on and surprising enough, no no noise and perfect sound. For these reasons I believe the issue is within the volume control and not so much the amplifier. I have an electronics background and noticed that the volume control is very unique in design and is not something that can be substituted with another volume control from other sources.

My recommendation is to check the sound quality of the audio from the RCA L/R audio outs on rear of the piano by connecting to a stereo receiver. If it sounds fine you're in luck. If the crackling sound does not diminish after a few minutes like mine does, I would suggest disconnecting the internal speakers and using the audio out only. You can connect a pair of studio monitors or high quality computer speakers, preferably with a small subwoofer to deliver the full audio range and deeper tone of a real piano. I'm currently using a basic pair of Logitech computer speakers and is quite acceptable until I can afford a high quality set of monitors or relocate my piano closer to my high quality Yamaha receiver.

I hope this info helps a bit.

Aug 18, 2010 | Yamaha Full-Size Keyboard

Not finding what you are looking for?
Mackie Tapco Th15a Thump Active Loudspeaker Logo

Related Topics:

826 people viewed this question

Ask a Question

Usually answered in minutes!

Top Mackie Music Experts

Michial Gueffroy

Level 3 Expert

1140 Answers

 Grubhead
Grubhead

Level 3 Expert

5699 Answers

Joaquim Martins

Level 3 Expert

1127 Answers

Are you a Mackie Music Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...