You need to be logged in to post on the forum
Topic Options
Index
#69496 - 04/10/10 04:20 PM [Off-Topic] SM57 repair
rharv Offline
Veteran

Registered: 05/30/00
Posts: 18673
Loc: Marysville, Mi. USA
One of our SM57's is messing up.

I opened it up (unscrewed the halfs) and wiggleda couple wires. The yellow wire cam loose easily. Easy fix, I thought. So I soldered it back to the post on the capsule.

I plugged it in to check it and it sounds 'tubular'. Very middle range tube sound.
It is also measuring a bit weaker than other dynamic mics I have here to compare with. Unfortunately I didn't bring another home 57 to compare directly.
Should there be continuity from each post on the transducer (capsule) to each of the three prongs of XLR?
Nothing is grounding to the case. I checked that with continuity test.
Green wire looks like it may have been 'crimped' as I observe a flat spot in it. If shortened to eliminate the flat spot it will be too short to solder. It appears all three wires go thru the foam down to the XLR connection, is this correct?

It is weird in that it 'works' but does not sound correct.

Any ideas?

FWIW the top half of the recorded signal will clip before the bottom half when displayed as a wavform..
seems like a phase issue, but I didn't change any wire connections (only resoldered one wire).


Edited by rharv (04/10/10 04:34 PM)
_________________________
Make your sound your own!

Top
#69497 - 04/10/10 05:14 PM [Off-Topic] Re: SM57 repair [Re: rharv]
Mac Offline
Veteran

Registered: 05/29/00
Posts: 38502
Loc: Chesapeake, Virginia USA
Check that pinched green wire, it likely is now open.

Use your ohmmeter to check the continuity of each wire from capsule connection to pin connection, one at a time.

Be careful trying to measure continuity of the capsule, use one of the higher ohms settings to reduce current applied to the voice coil. Using the low ohms or Diode scale setting can sometimes pop the voice coil of the capsule...

--Mac
_________________________
PGmusic FAQs, Tutorials and Updates! click here

You must be Audiominds.
www.audiominds.com

Top
#69498 - 04/10/10 05:25 PM [Off-Topic] Re: SM57 repair [Re: Mac]
rharv Offline
Veteran

Registered: 05/30/00
Posts: 18673
Loc: Marysville, Mi. USA
So there should be continuity from the capsule to the XLR? Thanks, should make it pretty straight forward.

Using RX1K on a small AA battery powered unit, good enough? Thanks


Edited by rharv (04/10/10 05:27 PM)
_________________________
Make your sound your own!

Top
#69499 - 04/10/10 05:56 PM [Off-Topic] Re: SM57 repair [Re: rharv]
silvertones Offline
Veteran

Registered: 05/13/03
Posts: 7174
I almost got so SM 57s cheap once from a guy who said that sounded bad. I checked them out and indeed they did however before i plugged them in in front of him I knew they would. They had wrapped colored tape around the mics up near the head for ID. Well the SM 57 has a little hole up there that vents the back side of the diaphragm. If you block that it can't move properly. I didn't have the heart to cheat the guy. I removed the tape and they were perfect.
_________________________
John
ESI Gigaport HD+
Lenovo Turion II /4 Gig Ram/ Win7x64
15.6" Monitor
"The only Band is a Real Band"

Top
#69500 - 04/10/10 06:47 PM [Off-Topic] Re: SM57 repair [Re: silvertones]
rharv Offline
Veteran

Registered: 05/30/00
Posts: 18673
Loc: Marysville, Mi. USA
Funny, this one has tape up near there for ID also, but not on the vent. That vent ring is missing and the tape is farther down by just a little. I do remember that part of the other SM57's, a small screen like band that this one is missing.

On further testing, I removed the XLR connector and see that I have back-yellow-green at the capsule end, and black-red-blue at the other end, so there is a connection in between. Also, continuity at RX1k is not responding at all from one end to the other on the red/blue and the yellow/green wires using any combination. The black one seems just fine.

So I'm thinking Barry somehow blew something in the larger half, where the colors change. Must be a reason for that change, not just a continuous wire. Maybe I'll finish taking it apart just to see what's involved between the cartridge and the XLR connector.. looks like an intriguing assembly inside that cone.


Edited by rharv (04/10/10 06:49 PM)
_________________________
Make your sound your own!

Top
#69501 - 04/10/10 06:49 PM [Off-Topic] Re: SM57 repair [Re: rharv]
Mac Offline
Veteran

Registered: 05/29/00
Posts: 38502
Loc: Chesapeake, Virginia USA
There is an audio transformer between capsule and mic then. DC continuity won't cut it as DC does not flow thru a transformer.
_________________________
PGmusic FAQs, Tutorials and Updates! click here

You must be Audiominds.
www.audiominds.com

Top
#69502 - 04/10/10 06:55 PM [Off-Topic] Re: SM57 repair [Re: Mac]
rharv Offline
Veteran

Registered: 05/30/00
Posts: 18673
Loc: Marysville, Mi. USA
By 'capsule and mic' I assume to mean capsule and XLR (?).

Gonna make it more difficult to test I guess with what I have on hand. I was hoping somebody on here had yanked a couple SM57's apart before. May be easier to just run to the store and see what mom/dad want for one.
..and finish ripping this one apart to learn from.
_________________________
Make your sound your own!

Top
#69503 - 04/10/10 07:49 PM [Off-Topic] Re: SM57 repair [Re: rharv]
Mac Offline
Veteran

Registered: 05/29/00
Posts: 38502
Loc: Chesapeake, Virginia USA
Shure publishes online user guides. Schematic is at the end of the .pdf

http://www.shure.com/stellent/groups/pub...pro_sm57_ug.pdf


--Mac
_________________________
PGmusic FAQs, Tutorials and Updates! click here

You must be Audiominds.
www.audiominds.com

Top
#69504 - 04/10/10 07:52 PM [Off-Topic] Re: SM57 repair [Re: Mac]
rharv Offline
Veteran

Registered: 05/30/00
Posts: 18673
Loc: Marysville, Mi. USA
Thanks
_________________________
Make your sound your own!

Top
#69505 - 04/11/10 07:38 AM [Off-Topic] Re: SM57 repair [Re: rharv]
rubberball103 Offline
Apprentice

Registered: 02/17/10
Posts: 297
Loc: NW corner of S. Nowhere
Thanks for that link Mac. I'm not having trouble with my 57's right now but I did not have that doc. Tucked it away in my manuals folder in case of future need.
_________________________
- Bud

Top


PG Music News
Band-in-a-Box® Video Testimonials!

Tell everyone how much you love Band-in-a-Box® with your very own Band-in-a-Box® Testimonial video!

Submit your video, and when we use it on our website (and YouTube page) we will send you a FREE Band-in-a-Box® Hard Drive!

Take a look at the video testimonials we've already received at www.pgmusic.com/videotestimonials.php

Learn more about how to submit your video testimonial here.

Beginners Help - Muting the Melody Notation

Visit our Beginners Forum, and you'll notice our amazing Forum Community helping out new program users!

Like this recent post regarding Muting the Melody Notation: http://www.pgmusic.com/forums/ubbthreads.php?ubb=showflat&Number=458716 - Forum user Matt Finley did a great job of answering the new program user!

Our Beginners Forum really is a great resource for new program users!

Q: When I have entered chords and notation for a song, is it possible to mute the notation and just have the chords playing? This would be helpful for when I just want the chord backing track but want to read the notation.

A: There are several ways to do this. The easiest is probably to use the Mixer window and change the volume slider to zero for the Melody track. Or, hit the Mute icon on the Mixer for the Melody Track.

Another way, with more control rather than all or nothing, is to press F5 at the measure where you want to mute, and select mute or change the volume to zero. Later, press F5 and select Return to Normal, or change the volume back.

Introducing... RealTracks Artists David Wise & Shelly Justice!

For the first time ever Band-in-a-Box® can generate backing vocals with some amazing "oohs" and "aahs" vocal arrangements with RealTrack Set 278: Shiny Vocals Oohs and Aahs! Add male or female parts by renowned Nashville vocalists David Wise and Shelly Justice, and you'll LOVE the results!

David and Shelly have recorded with many different artists, including CeCe Winans, Dolly Parton, Don Henley, Donnie McClurkin, Jeremy Camp, Lady Antebellum, OneRepublic, Steve Green, and more!

RealTrack Set 278: Shiny Vocals Oohs and Aahs includes a three-part, six-voice arrangement – which you can use all together in your song or individually for more delicate textures! Listen to the demos for RealTracks Set 278 here.

Purchase RealTrack Set 278: Shiny Vocals Oohs and Aahs for just $29 here. It's also included in the Band-in-a-Box® 2018 for Windows PlusPAK, UltraPAK, and Audiophile Edition.

Learn more about Dave & Shelly when you visit their RealTracks Artist Bio page:
David Wise: http://www.pgmusic.com/realtracks.artists.php?a=150
Shelly Justice: http://www.pgmusic.com/realtracks.artists.php?a=151

#TechTipTuesday - Band-in-a-Box® Patch Updates

If you're ever experiencing an issue with your Band-in-a-Box program, make sure you have the most recent patch update for your version - this can be done at http://www.pgmusic.com/support.updates.win.htm.

Patch updates are released frequently, and are created by our development team to fix any reported bugs, tweak existing features within the program, update demos and other files as needed, and more!

To find out which version of the program you have, visit Help | About Band-in-a-Box within the program. You will see the full version number listing as:
Band-in-a-Box® for Windows
Version 2018 (512)

The number in parentheses is the build number. As you can see, my Band-in-a-Box is up to date and will continue to stay that way because I've selected "Automatically check for updates every 7 days" within the Help | Check for Updates.... option (you can set the number of days to a different number). This window will also look to see if you're version is up to date, so you don't technically have to visit http://www.pgmusic.com/support.updates.win.htm if you didn't want to!

Once you've installed your patch update (make sure the program is closed when you're doing this), give it another try - if you are still experiencing the same issue you can report it by contacting us directly, or you can post your result to the Forum thread that also announces the patch update, like our recent Band-in-a-Box 2018 Build 512 Update (Feb 15) post.

YouTube Find - How To Play SLOW A7 BLUES Guitar Solo With 4 NOTES

Check out one of EricBlackmonGuitar's latest videos, How To Play SLOW A7 BLUES Guitar Solo With 4 NOTES and you'll hear a great Band-in-a-Box backing track!

http://www.pgmusic.com/?vid=blJPIX-9YbE

...and you'll also learn how to play blues with just a few notes!

A Little Bit Of Me Music Video!

A great music video created by forum user Floyd Jane! https://youtu.be/qPrejgnwb4M?t=3600

This song was featured in a detailed "The Birth of a Song" video created by Floyd Jane - watch the complete video here:
http://www.pgmusic.com/?vid=qPrejgnwb4M

RealBand 2018 Build 5 Update Available!

RealBand 2018 customers can download the latest free patch update here: http://www.pgmusic.com/support.realband.htm#2018_5

Summary of Changes for Build 5
Added: When generating the input file for saving as an MGU/SGU SongMode128= is saved to the input file.
Added: Localization support for 2018.
Added: flyby hints to new dialogs.
Fixed: Save As with a filename greater than 128 chars could cause an error 123 plus access violation.
Fixed: Rebooting RealBand after a filename with 128 chars was saved could cause an access violation.
Fixed: Pressing the Change button in the Event List Window could result in an access violation if an event was not a Note event.
Fixed: When running in Win 10, and using BBW or PT to generate audio harmonies, an error would occur saying that you need BB 2011 or PT 12 to generate audio harmonies.
Fixed: Midi Thru Method was not being saved to the .INI file. It always reverting to Track-Specific when booting up RealBand, even if the user manually changed the setting to Global in the Midi Thru Settings dialog.
Fixed: Delete All Notes on This Peg menu item in notation window right-click menu was missing.
Fixed: Potential crash on exit (having to do with the DLL attempting to free up a dynamic array that was passed to it).

Forum Stats
27152 Members
49 Forums
50353 Topics
413401 Posts

Max Online: 2434 @ 11/14/17 12:37 AM
Newest Members
RmGx, GIBSON335, profesas, pilk, whalil

27152 Registered Users
Top Posters (30 Days)
Matt Finley 249
Noel96 213
VideoTrack 159
MarioD 151
eddie1261 128
jford 124
Janice & Bud 123
Jim Fogle 116
Al-David 114
Belladonna 112
Today's Birthdays
No Birthdays