Question about Mackie SRM-450 System

2 Answers

When I turn on my Mackie srm 450 it puts out a loud noise.

The noise sounds like a very loud hum that does not stop. The peak light also comes on almost right away. Can anyone tell me what this is or how to fix it?

Posted by on

  • lwolfgramm May 30, 2010

    I have diconected the speaker from the amplifier to find out if it is the speaker and it is definitely the amplifier.

×

Ad

2 Answers

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    President:

    An expert whose answer got voted for 500 times.

  • Master
  • 1,297 Answers

Sound like a defective input

pull your input and pass through wires, if any and try to power up again

if the hum is gone then it is just a simple process to see which wire is giving the feedback

assuming nothing is plugged in an you are still getting the feedback then the concern is in the input circuit board and you will have to have the unit repaired

Posted on May 30, 2010

Ad
  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    President:

    An expert whose answer got voted for 500 times.

  • Master
  • 1,902 Answers

There is a connection problem with your wiring. Check all of your connections and make sure that they are in all the way, no wires not even 1 strand is touching each other, and all connections are secure. If that doesnt fix the issue then you can put the wires into another port. Sometimes the problem is the sub not being placed in the right port

Posted on May 30, 2010

  • lwolfgramm May 30, 2010

    This problem is with the amplifier. I have disconected it from the speaker and it still does the same thing. There were two prongs on the board that were broken so I soldered them and it is still doing the same thing.

×

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that 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.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Mackie srm 450


http://www.mackie.com/products/home/contact.html

Jul 20, 2014 | Mackie SRM-450 System

1 Answer

My Mackie SRM-450's both make excessive white noise, one of them crackles quite loudly.


This type of active speaker by Mackie has a issue with operational amplifier ic's inside, they are just those little black things with 8-pin soldered to the pcb, you may have some of them damaged, because of the erratic operation of the units, let me know if i can help more.

Jul 04, 2013 | Mackie SRM-450 System

1 Answer

Mackie 450 thermal light on no sound


could you give some more info? what are your running into your speaker? and how exactly is it run? once we weed out common issues like switched up cables, than we can move on to internals.
which on that note, I think this is a manufacturing defect


here's a link to the schematic if you want to go poking around the circuits.....


http://www.mediafire.com/?myion3zkxn3


or
http://www.mediafire.com/file/myion3zkxn3/Mackie-SRM450 actspk.pdf



take a resistance test between D56 pin1 and Q35 pin2. thats where this issue seems to be stemming from from ones ive worked on. I have know it to be an internal track that was broken and needed to be glued back down. definitely not the first time ive seen this....

Dec 07, 2012 | Mackie SRM-450 System

1 Answer

Mackie 450v1 when i turn on low cut switch the sound stops turn off low cut and sound returns


Dusty/Faulty switch and/or opamp inside pcb, let me know to help more/.

Jan 03, 2012 | Mackie SRM-450 System

1 Answer

My srm 450v2 is making a low hissing sound have changed the lead and power chord but its still the same if you tap the mic the noise stops until you start speaking again and it still does it when no xlr...


you may have a bad ground somewhere within the wiring. If the hiss disappears when you use the mic, it is probably because you are temporarily providing a ground with the x channel of your xlr. either the bad ground is within the speaker, or it is within the house wiring. if you have any fluorescent lights nearby, or on a similar circuit, you will get a hum or hiss. Beyond that, I'm not sure what it could be except possibly a blown component within the speaker.

Mar 08, 2011 | Mackie SRM-450 System

2 Answers

The tweeter of my mackie srm 450 V2 makes a quite loud noise (humm). this nois was there right from the beginning, and mackie told me, that this was usual....the older 450´s did not make this kind of...


The latest 450v2 include this metal portion 1 to isolate AC lines over IC's, metal part 2 is include in all versions, some technician remove them and that creates more hum at idle levels, by having both the latest 450v2's are the quietest of the v2's.
V1 did not use switching power supply, they use discrete circuit and that is why they are a bit quieter
tweeter-mackie-5t215me55uezwm4wwbbpfxqh-3-0.jpg

Aug 04, 2010 | Mackie SRM-450 System

2 Answers

Mackie SRM-450 tweeter distorts sound


I'd just order a new diaphragm and see if that's the problem before any other dismantling. If that's not the problem, I'd take it to a certified repair shop. The fact that it's still working but not producing certain frqs,tells me you won't be able to see the problem with the naked eye.

Feb 19, 2010 | Mackie SRM-450 System

1 Answer

Humming speakers


If you disconnect the signal leads and the hum is away, it's probably a groundloop problem, or your equipment is generating the hum.
If it does not go away, the amps are defective

Sep 23, 2009 | Mackie SRM-450 System

1 Answer

SRM 450 stopped working, all three lights in back on, red ligh


I suspect the unit is in protection mode due to an amp failure.

Mar 30, 2009 | Mackie SRM-450 System

2 Answers

Humming problem


This could be a grounding problem, it might change if you plug it in elsewhere or it might be where you live.

Jan 28, 2009 | Mackie SRM-450 System

Not finding what you are looking for?
Mackie SRM-450 System Logo

Related Topics:

119 people viewed this question

Ask a Question

Usually answered in minutes!

Top Mackie Audio Players & Recorders Experts

 Grubhead
Grubhead

Level 3 Expert

5113 Answers

Brad Brown

Level 3 Expert

15628 Answers

Are you a Mackie Audio Player and Recorder Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...