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Fame MS 58 Mk II Dynamic Microphone.

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Fame MS 58 Mk II Dynamic Microphone.

Postby Wonks » Tue Sep 18, 2018 2:46 pm

After seeing the Fame MS 58 microphone suggested by someone in the Live Sound forum as being much cheaper but better sounding than a Shure SM58, my interest was piqued so I ordered one. For comparison, on DV247s web site, a Shure SM58 is currently £87.10, and the Fame £17.20 (excluding postage, and it will come from Germany).

Fame is the in-house brand of Music Store Professional based in Cologne (who are fronted by DV247 in the UK) and covers a whole range of musical products including guitars, amplifiers, drums, keyboards, PA, microphones and all sorts of accessories. They are all budget priced and Chinese made items, but seemingly offering good value for money.

The MS 58 Mk II, is an obvious SM58 look alike, though physically the mic body is is slightly longer and the grille mesh is wider spaced. The comparison SM58 is probably at least 15 years old, maybe older, but is well cared-for as it came from Tim Rainey's studio, so it hasn't had a hard life on the road.

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The Fame grille has a slightly different thread to the Shure, so they can't be swapped. The mic capsules look very similar (externally at least), though the Shure one sits slightly lower in its housing.

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The Fame MS58 is a much lighter microphone than the Shure SM58, weighing 186g vs 313g respectively.

The Fame body splits in the same way as the SM58, with the lower 4/5ths unscrewing to reveal a direct connection from the capsule to the output XLR, with no epoxied-in transformer like on the SM58.

A closer inspection reveal that the Fame is wired for unbalanced use, with pins 1 and 2 linked. Completely unnecessary!

I set up an rough frequency response test to compare the two mics by positioning them at a point about 100mm away in-between the driver and tweeter of one of my Genelec monitor speakers, and then recorded the mics output whilst outputting a pink noise signal to the monitor. I then used Cubase's frequency analysis tool to get the response from a 10 second section of audio for each mic.

Here's the response for the Shure SM58

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And here's the response for the Fame MS 58 Mk II

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I cut off the lower part of the frequency response for the Fame mic, as I wasn't sure how accurate it was, as unlike the Shure, it stayed pretty high in the top part of the graph all the way to 15Hz instead of falling off like the Shure did.

It's obvious to see that the mics have a very different frequency response, with both exhibiting some proximity boost at the bass end, but the Shure remaining fairly flat above that until its response starts tailing off above 10kHz. the Fame on the other hand, has a very pronounced high-end boost, but with a very noticeable dip at around 6kHz, with almost scooped mids.

One thing the graphs don't show you (though you may have guessed from the unbalanced mode of operation) is that the Fame's output was significantly lower. Its average RMS level was around 7.5dB less than the Shure, so you'd certainly need to jack up the gain on your mixing desk if you used it as-is.

I then did a rough vocal test of both using headphones (to avoid any feedback). The SM58 sounded as it should do, with significant close-up bass boost but otherwise a reasonably detailed and pleasant sound.

The MS 58 on the other hand, was all bass and top end, Not pleasant at all, a very scooped sound. Apart from being significantly quieter, the other thing not apparent from the pink noise test was the level of noise produced, probably as a result of it being unbalanced. I was using a longish XLR lead, maybe 15 metres, which would be reasonably typical overall for stage use. With the SM58 it was just silent when I wasn't speaking. with the MS58 it was "hello seaside!", loads of high frequency noise (not mains hum) very clearly audible.

I found that I don't own a small enough screwdriver with a big enough handle in order to undo the XLR fitting screw (it's done up really tightly), so couldn't snip the link to pin 1 and try it in balanced mode and see if the noise level improved. So I've ordered one (well a nice set) and hopefully tomorrow can report on what difference the mod makes to the sound.

But as it is, I think I've definitely found a worse mic than the C1000, and it doesn't even have the benefit of being robust enough to use as a hammer or door stop etc.
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Re: Fame MS 58 Mk II Dynamic Microphone.

Postby Hugh Robjohns » Tue Sep 18, 2018 3:03 pm

Nice work Wonks!

Clearly there's been some considerable effort at reverse engineering that capsule, but it looks like they missed on some o the more important constructional details! ;-)

The reduced weight and lower output level can probably be attributed to the lack of output transformer (which is a cost-saving thing, presumably). Of course, there is a popular 'modders' thing to remove the transformer from real SM58s and SM57s to 'improve' the sound... ;-)

If you do manage to get at the XLR, it would be worth checking how the casework is grounded (assuming it is, somewhere!). Ideally it should be via a swaged link directly between pin 1 and the body. (It's not unknown for RF pickup to occur where a short wire (which acts as an aerial) has been used to link pin 1 to the body in other mics!) However, it is conceivable that it's via the capsule itself, and that might account for the high level of background noise you experienced.

The other useful check would be to assess it's absolute polarity, and whether a positive acoustic pressure wave generates a positive electrical output waveform. Sounds like it might be inverted from your description.

Those high end resonances may be due entirely to the capsule, but it might also be a lack of acoustic damping within the sphere of the grille, allowing internal resonances to build up. Worth a look and some experimentation with a very thin piece of foam, perhaps...

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Re: Fame MS 58 Mk II Dynamic Microphone.

Postby Wonks » Tue Sep 18, 2018 3:20 pm

I've dug out the multimeter and on this mic, the body isn't connected to ground at all. The XLR fixing screw goes into a metal insert in the plastic XLR body, and the internal end of the metal insert appears to be soldered to Pins 1 and 2, but there is no continuity between the body and pin 1 or 2).

The XLR screw itself is making good contact with the body and I get a happy beep and a low resistance value, but somehow the screw isn't making proper contact with that insert, which as the fixing screw should be screwed into the metal insert, is something of a mystery at the moment.
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Re: Fame MS 58 Mk II Dynamic Microphone.

Postby The Red Bladder » Tue Sep 18, 2018 3:46 pm

I used to sell those things back in 79 and 80 when they first came out. They were so cheap that they sold like hot cakes. They were first distributed by Monacor in Germany, along with other cheap Chinese mics.

They had all sorts of brand names in different markets, but all had the MS58 and MS57 badge. There was a range below them that just had the badge DM- followed by a number. They sounded even worse! They were built in China and distributed via Taiwan.

I'm glad to see that they are still out there!
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Re: Fame MS 58 Mk II Dynamic Microphone.

Postby Wonks » Tue Sep 18, 2018 4:02 pm

The Red Bladder wrote:I used to sell those things back in 79 and 80 when they first came out. They were so cheap that they sold like hot cakes.
So now we know who to blame!
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Re: Fame MS 58 Mk II Dynamic Microphone.

Postby Janneman » Tue Sep 18, 2018 10:38 pm

Hi Wonks, interresting article. Is it possible to place some more pictures abiut the connections on the inside. If it’s possible to change the wiring will it be still a cheap mic?
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Re: Fame MS 58 Mk II Dynamic Microphone.

Postby Wonks » Wed Sep 19, 2018 9:08 am

I will do once I can get the XLR connector loose.
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Re: Fame MS 58 Mk II Dynamic Microphone.

Postby Dave B » Wed Sep 19, 2018 9:46 am

You should have mentioned that you were going to do this Wonks and I'd have thrown a genuine Chinese copy of a 58 (and a 57) at you as well. To my untrained eye, they are so close that I'm keeping them for body/head spares in case my real ones break. I'm not sure that the innards are worth anything...
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Re: Fame MS 58 Mk II Dynamic Microphone.

Postby Wonks » Wed Sep 19, 2018 10:15 am

Dave, you can try this Fame out at a rehearsal (once it's modified), just for a laugh!
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Re: Fame MS 58 Mk II Dynamic Microphone.

Postby Wonks » Wed Sep 19, 2018 12:22 pm

OK, screwdrivers arrived, so the XLR insert in now out of the body. The screw got slightly chewed up a) because its quite soft metal and b) I was trying to screw it out, when I should have tried to screw it in to the XLR so that it no longer held the XLR insert in place and it could be withdrawn. It's been a long time since I last did this!

So here's the XLR. I've numbered the pins so that it's clear to see that pins 1 and 2 are connected, and that there's also a link from pins 1 and 2 to the metal tab that holds the XLR grub screw.

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What isn't quite so clear and difficult to photograph, is that the link to the tab doesn't actually make contact with the tab. Although the wire link has some solder on it, it's failed to bridge the gap between the link and the tab, which is why the body remained un-grounded.

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So it's time to fire the soldering iron up and see what we can do to improve things.
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Re: Fame MS 58 Mk II Dynamic Microphone.

Postby Hugh Robjohns » Wed Sep 19, 2018 12:31 pm

Okay... So since all the soldering looks a bit rough and ready anyway, why not de-solder the XLR completely, clean it up, and then re-wire it with the red wire on pin 2 (assuming the red wire carries a positive voltage for a positive air pressure*), the black on pin 3, and link pin 1 straight across to the chassis tab.

* Put the Fame and Shure mics alongside each other, record into your DAW, and compare the waveform polarity when speaking something with plosives like "Peter pecked a pickled pepper... etc" In the unlikely event that they are the same, re-wire with red on 3 and black on 2...

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Re: Fame MS 58 Mk II Dynamic Microphone.

Postby Wonks » Wed Sep 19, 2018 12:47 pm

An as-is polarity test with me going 'pup' into the mic shows that the polarity appears correct as it was wired, so it's out with the solder sucker.

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Re: Fame MS 58 Mk II Dynamic Microphone.

Postby Hugh Robjohns » Wed Sep 19, 2018 1:07 pm

Okay. Red on 3 and black on 2 it is! :-)

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Re: Fame MS 58 Mk II Dynamic Microphone.

Postby Kwackman » Wed Sep 19, 2018 3:40 pm

Hugh Robjohns wrote:Okay. Red on 3 and black on 2 it is! :-)
I know it's right, but that feels so wrong!
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Re: Fame MS 58 Mk II Dynamic Microphone.

Postby Hugh Robjohns » Wed Sep 19, 2018 3:55 pm

Yes... very odd! :-)
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