Mackie support

[Charlie Brown]

Hi folks,

One of my SRM450 V2s tweeter is very intermittent. It will work for a few seconds then cut out again. It actually hurts your ears when it does work because you're used to it not working, if that makes sense?

I changed over the cables and that doesn't seem to be the problem - just hums a lot.

Dad think it's a dry joint of a problem with the crossover?

Where can I take it to for servicing? Cheers

[Paul James Promotions]

Could well be a loose component on the crossover board, they can sometimes become loose due to vibration. Are you not confident to have a go yourself?

You could also try swapping the tweeter in the poorly box into the good box, if it works perfectly you've immediately eliminated the tweeter itself as the problem.

[Charlie Brown]

Dad might have a go - are they easy to get into/mess up?

[Charlie Brown]

Okay,

Undid both of them and now the tweeter seems to be 'semi working'.

When you set the poorly speaker to 12ock on the gain and plug a mic in, it's a lot quieter and not as clear as the happy mackie. I'm getting feedback so I know the tweeter is still working.

Any suggestions? Also, where can I buy the knobs that go on the back to secure it to a stand?

Cheers

[supersound]

you need to disconnect the bass driver and test.

[Pe7e]

If you have both speaker cabinets split open, have you tried swoping the tweeter drivers over? if so does the problem follow the tweeter or does it stay with the cabinet? Just because a tweeter makes a noise, it doesn't mean it's OK, the diaphram inside the tweeter could well be damaged, especially if it's been driven hard, it's a common fault and can easily be fixed, a new diaphram costs around £40 - £50

[Charlie Brown]

I'll get dad to have a look and swap them over tonight. I'll let you know. Thanks

[Wayno]

With the gain set at 12 o'clock a mic feed will be quiet as although full gain for a line input it is actually a lower gain setting for a mic input.

[Charlie Brown]

I meant in comparison to the good speaker, both set at 12, one was significantly quiter than the other.

[Kernow]

Hi folks,

One of my SRM450 V2s tweeter is very intermittent. It will work for a few seconds then cut out again. It actually hurts your ears ?
Where can I take it to for servicing? Cheers

http://www.papegaaienpark.nl/index.php/en/rescue-centre/parrot-hospital.html

;) :D :D :D

[Charlie Brown]

:lol:

[Cj_The_Dj]

any update?

[Charlie Brown]

Well I used it last night and one speaker was considerably louder than the other. Like on one speaker, the vocals were really sharp and crisp and the other muffled/not as clear?

Especially with tunes like Mack the knife etc.

[katman]

I would say thay the horn is not working on one of them then !

[Charlie Brown]

I'd already got one RCF sub but needed another, Paul was selling his 705 sub and two tops so I had the lot. The problem I had with the mackies was one sounded louder than the other & it's happened again with the RCF's tonight (but quite noticeable!) I've tested both speakers and they're in full working order.

Tried it with my laptop and then the dds 80 and it's the same so I that's eliminated the playout...apart from the mixer! I have a spare one in the garage which I'll dig out tomorrow but if I remember correctly (when I had the mackies) the spare mixer didn't change anything either. Should one side be significantly louder than the other? Should the dennon mixer be in mono or stereo? I thought both speakers should be equal volume?

Any advice would be appreciated. Thank you in advance.

[Solitaire Events Ltd]

Are you standing closer to one speaker than the other one? :sj:

[Charlie Brown]

:lol:

No, there is difference. I mean, it sounds alright but one side is doing double the work to the other.

[Jiggles]

I think its your ears and head Charlie. Its a very odd thing that two sets of speakers have the same problem!

[Charlie Brown]

Well my brother and dad must have funny ears too!

[katman]

The way to test the speakers is to take a single output from your mixer or whatever source you are using and feed it into one speaker, then loop out into the other. That way you are feeding exactly the same into both speakers and they should sound the same.

If you notice a difference in sound then swap the physical positions of the speaker. The fault should then move to the opposite side. If it does then that speaker has a fault of some sort.

If the fault appears to be on the same side then get a hearing test because you have knackered one of your eardrums !!!

[Charlie Brown]

Great idea. I'll try that tomorrow.

[Jiggles]

I could be something to do with phasing too.

http://www.feilding.net/sfuad/musi3012-01/images/lectures/04_phase_cancellation.gif

Something like that. One ear could be getting a summed phase while the other is getting the nulled side thus it sounds different.

[Charlie Brown]

Now I've plugged into the base, they sound pretty much the same volume, on they're own and it's different. Really bizarre.

[Corabar Steve]

Bass

Their

:P

[SoundONE]

As Jiggles says could be phase reverse, are they balanced leads that you have brought or some that someone has knocked up for you. if the + and - have been mixed up you could get this effect.

What makes me think this is possible is because you say it's happened twice on different speakers. I would swap leads and see if the other side changes to a lower volume.

It's only going to be a 5 min job to find out of it's the speaker or connections.

[Charlie Brown]

Tried it with a different mixer, same problem. The sub comment was complete rubbish, I wasn't making sense then.

Perhaps that's how speakers should be. I dunno. :(

[Kernow]

Tried it with a different mixer, same problem. The sub comment was complete rubbish, I wasn't making sense then.

Perhaps that's how speakers should be. I dunno. :(

Are you running in stereo or mono ?