Got given this AKG C451B mic for free - it works fine but the top housing that is on the mic seems to have come loose and as you move the mic around the top housing moves against the screws and this noise can be picked up on the headphones and the recording.
Anybody else encounter this? Is there a quick fix?
Just had another look at the mic head and it seems the screw holes have become bigger due to wear!!
Any suggestions on what i can do?
Thanks in advance.
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Re: Loose Mic Head
Aahhh the joys of second hand gear. wow, the holes have been enlarged... may be that the original screws are not fitted to it also. OR less likely, mic may have become this way from years of being pulled in and out of a bag, with loose screws the whole time. It will rattle if the screws are a loose fit, can only suggest to you at this point try and get some new screws for it. or short on that (more drastic measure) to resecure the head of the mic with a small dap of clear nail varnish about each screw head. the varnish will hold well enough, but may present an issue getting the mic apart again, this depending entirley on how much of the stuff you have applied. Less is better :). other than that, there is not really a fix. Hope this advice helps you.
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hard to say without more info. you probably know this , but as a condenser mic it requires 48v phantom power to operate. Does the pre-amp/mixer you are plugging it into provide that (there will be a button on it marked 48v)? If not, that is the problem.
Hi,the switch for the phantom power on the microphone is to activation of the mic.Without the phantom being activated, the mic will not work.
It can only be activated with a mixer console that has a phantom activation on it. After connecting the mic to the mixer,activate the phantompoweronthe mixer and switch on the phantom power on the mic,and problem solved.
Note: Mic will not work if no phantom activated on the mixer.
Have you tried using a another XLR cable..,or are the other mics phantom powered condensers..ie try to locate if its a mic problem or the cable..2 other points are 1 - XLR leads for phantom mics need to be XLR to XLR male to Female plugs[ends] 2- is that often an XLR to XLR cable will be not soldered or wired right,so that the power [phantom power is not getting to the mic] so ensure you have a proper cable for that job...Sorry i can't be more specific but from reading your problem all these issues come to mind..If you have ruled all these things out,then it could be the capsule or loose joint or component in the mic which means contact AKG,pro audio services or find a DIY mic person to help..G luck!!
Sounds to me like you may be missing a phantom power supply. The 570S is a Dynamic mic. The MX412d/c is a Cardioid and requires a 11-52v supply over pins 2 & 3 in the mic cable. Phantom power is a feature of most professional mixing consoles(usually 48v). If you do not have a phantom power supply on your system- then you can purchase single battery powered units to insert in the link between sound console and Mic. For example: AKG B-18
Hope this helps.
Had the same problem. Check the ground (earth) is attached properly to the mic. This will cause the signal to be interrupted and can also cause a phasing problem. A lot of techs don't check that when you send them for repair