S
songsj
Member
Is it okay to run a dynamic mic [SM 57 ] through a phantom powered input/ [If you have no choice].
Thanks
Thanks
B
Big Kenny
New member
yes
noisedude
New member
yup. just make sure it's switched off before you plug the mic in or take it out.
VTgreen81
Active member
It's not a problem, we do it all the time
(Sonsj.......I'll quietly let you know so you don't get yelled at too, the folks here frown on posting the same thread in multiple forums)
(Sonsj.......I'll quietly let you know so you don't get yelled at too, the folks here frown on posting the same thread in multiple forums)
noisedude
New member
well, ok then. usually there's no problem with hot-plugging mics but really if you want to be careful you'll take the extra few seconds to switch off. it depends how expensive your gear is and how much you can afford stuff to break!
i wasn't going to say about the multiple threads...but it was a bit impatient, wasn't it?!
i wasn't going to say about the multiple threads...but it was a bit impatient, wasn't it?!
Gidge
Lapdance Test Dummy
from Harvey Gerst:
Most mics use a transformer as the output to the board preamp. A transformer won't pass DC. That's how phantom power works; they put +48 volts DC on pin 2 and 3 (relative to ground), and then the transformer stops it from going any further. But now they have that voltage at the mic and they can tap off of it to power the capsule and the electronics. Can it hurt a dynamic mic? Yes under a couple of conditions.
It could damage a mic if one side of the transformer or the cable is shorted to ground, or the connector doesn't make contact with both signal pins at the same time. For the most part, it shouldn't be a problem, but it's always a good idea (whenever possible) to turn off phantom power before connecting or disconnecting ANY mic.
Ribbon mics are most suceptable to phantom power since the ribbon acts like a fuse, and it will simply break or vaporize, but the transformer will usually offer some safety, even there.
https://homerecording.com/bbs/showthread.php?s=&threadid=27071&highlight=phantom+damage+dynamic
Most mics use a transformer as the output to the board preamp. A transformer won't pass DC. That's how phantom power works; they put +48 volts DC on pin 2 and 3 (relative to ground), and then the transformer stops it from going any further. But now they have that voltage at the mic and they can tap off of it to power the capsule and the electronics. Can it hurt a dynamic mic? Yes under a couple of conditions.
It could damage a mic if one side of the transformer or the cable is shorted to ground, or the connector doesn't make contact with both signal pins at the same time. For the most part, it shouldn't be a problem, but it's always a good idea (whenever possible) to turn off phantom power before connecting or disconnecting ANY mic.
Ribbon mics are most suceptable to phantom power since the ribbon acts like a fuse, and it will simply break or vaporize, but the transformer will usually offer some safety, even there.
https://homerecording.com/bbs/showthread.php?s=&threadid=27071&highlight=phantom+damage+dynamic
noisedude
New member
thanks ... right again 
Marik
Pro Microphone Design
<Ribbon mics are most suceptable to phantom power since the ribbon acts like a fuse, and it will simply break or vaporize, but the transformer will usually offer some safety, even there.>
Here, it would be interesting to have a look at this flame:
http://www.recording.org/cgi-local/ubb/ultimatebb.cgi?ubb=get_topic;f=6;t=000960
Here, it would be interesting to have a look at this flame:
http://www.recording.org/cgi-local/ubb/ultimatebb.cgi?ubb=get_topic;f=6;t=000960
H
Harvey Gerst
New member
I think the source of the confusion is ribbon mics with centertapped transformers, where the centertap is grounded. Most people wouldn't even know what to look for to see if this is a problem, so it's better to caution on the side of safety when dealing with unknown ribbon mics, hence the warnings.
S
songsj
Member
Thanks for the replies, I'm looking at the new Tascam 2488
which has 4 xlr and 4 1/4 inputs. 4 of the inputs have phantom power and I can 't tell from the product picture if you can turn the power on or off for each input individually. [ There appears to be only one phantom power button. ] I plan on using two condenser
overheads and 4 to 6 dynamic mics for my drums, so I may need to run a coulple of the dynamics with phantom power.
Sorry about the double post I looked up Phantom power with the search function and posted my question. Then I realized I didn't
know which forum the search took me to, so I posted again in
microphones.
which has 4 xlr and 4 1/4 inputs. 4 of the inputs have phantom power and I can 't tell from the product picture if you can turn the power on or off for each input individually. [ There appears to be only one phantom power button. ] I plan on using two condenser
overheads and 4 to 6 dynamic mics for my drums, so I may need to run a coulple of the dynamics with phantom power.
Sorry about the double post I looked up Phantom power with the search function and posted my question. Then I realized I didn't
know which forum the search took me to, so I posted again in
microphones.