Phantom power and Shure SM58

  • Thread starter Thread starter Scotsman
  • Start date Start date
S

Scotsman

New member
I have a Soundcraft Spirit F1 mixing board. It provides phantom power for condenser mics but it's either on for the full board or off, in other words, it can't be assigned to individual channels. I use condenser mics for acoustic guitar and I have a Shure SM58 for vocals. If I switch on phantom power when the Shure mic is in use, will it damage it? If not, will the Shure mic still work? I don't want to take the risk and try it in case I hose my SM58.

Cheers
Scotsman
 
Not a problem. 48v gets applied to both signal leads so electrically, everything is balanced. Be sure not to touch the metal windscreen with your lips.....






....... just kidding. :D :D You won't get shocked. :p
 
The 'similar threads' feature at the bottom of this post helped me out and I got the answer I needed (and wanted!)

Cheers folks
 
You will read in the user's manual of almost every device that can produce Phantom power to not turn on PP if a non-PP mic is connected, but nothing will happen- unless something is wrong with the wiring. Short of taking the mic apart and checking it out, I am not shure how you would know ahead of time.

My Soundcraft board (not a Spirit, but don't recall what model, it's stored away right now) has a PP switch for each channel. Nice. Once I recall having PP sent to a recording device (for some legit reason it was hooked up) and a deathly howl resulted. turned off PP, noise stopped.

The truth is, the only reason I posted here was to take advantage of the opportunity to make that second pun. The first one was just gravy.
 
Actually the SM58 has a Transformer in it and a Transformer will block DC...

In a non-Transformer Dymanic Mic there also shouldn"t be any problems with Phantom power unless there is an accidental short between a signal and ground wire.....


:D
 
There are old timers that will tell you that once you feed +48 into an SM58, it will never never sound the same again....

... Ignore those old timers....
 
I know this is a late reply to this but for the ppl who are still looking for an alt solution to such problem:

you can use a Quarter inch cable on the dynamic mic, this will insure that no Phantom Power would be transferred to your mic.
 
YXrecordings said:
I know this is a late reply to this but for the ppl who are still looking for an alt solution to such problem:

you can use a Quarter inch cable on the dynamic mic, this will insure that no Phantom Power would be transferred to your mic.
Click to expand...

Using a 1/4" connectors is very wrong, you will not get a balanced mic input at the correct ohm level this way, there is no need as the SM58 works fine with phantom applied.

No need to reply to a 5 year old thread with an incorrect suggestion.

Alan.
 
Funnily enough when I bought my one and only SM58, it came with a 1/4 inch to XLR cable.... This was a long time ago, however.
 
Armistice said:
Funnily enough when I bought my one and only SM58, it came with a 1/4 inch to XLR cable.... This was a long time ago, however.
Click to expand...

But did your PA system look like this back then LOL, my first shure mic was in fact a hiZ one for jack PA systems, and yes we had a PA just like the photo in my first band.

Alan.

eminar.webp
 
You must log in or register to reply here.
Back
Top