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[Jeremi Roivas]

Hello since nowhere are talked about what transmitters are Shure capsule ready and which needs adapters I tought to start discussion because I really am after transmitter and receiver for my sm58 capsules that has taken from bad frequency transmitters. So I am after cheap wireless set that is capsule exchangeable with sm58 capsules.

Frequencies need to be:

823–832 MHz (UHF)    Usage for free license
863–865 MHz (UHF)    Usage for free licence

If you have experience in this matter please join to talk.

I have heard that Samson Concert transmitter supports Shure capsules...

[Jordan Wolf]

Jeremi,

RatSound makes ones that let you use Audix and Sennheiser capsules on various Shure and Lectrosonics TX units, and I know I've seen some others for sale at B&H Photo/Video.

Other posts have been made about them, maybe try searching for capsule adapters.

[Chuck Simon]

The Line 6 wireless 70 and 75 series accept Shure capsules.

[Jeremi Roivas]

The Line 6 wireless 70 and 75 series accept Shure capsules.

Nice Kam VHF supports shure capsules: http://www.amazon.co.uk/gp/product/B003SQ91US/ref=s9_simh_gw_p267_d0_i5?pf_rd_m=A3P5ROKL5A1OLE&pf_rd_s=center-2&pf_rd_r=19Q0J371BCGC1G1RZ8Y9&pf_rd_t=101&pf_rd_p=455344027&pf_rd_i=468294

This was confimed by amazon seller who is audio gear store.

Also German Alpha Audio: http://www.alpha-audio.de/alphaaudio_mic_dual_wl.html?&L=12

I think these will fit also. I bought these as they share same mic transmitter model than KAM audio but they operate UHF 683-685 band. The good thing of these were also that they support 9V battery so I can use Li-ION batteries with it. Makse 4 times more operating time than statet. I will report if they support Shure capsules.

[Jeremi Roivas]

RatSound makes ones that let you use Audix and Sennheiser capsules on various Shure and Lectrosonics TX units

Lectrosonics mic is confirmed to support Shure capsules by youtube video: https://www.youtube.com/watch?feature=player_embedded&v=Z0FbTNiIx0M

Also in the video is said that EV, HiSound and Telefunkin capsules can be used so I assume these mics are shure compatible also. Audix capsules need that adapter to support Shure threading so audix transmitters does not work with shure, neither does senheiser.

Edit:

I went to EV and Telefunkin websites and it seams their mics thread size seem similar to shure when looking the mics so I guess this is confirmed.

[Tim McCulloch]

Lectrosonics mic is confirmed to support Shure capsules by youtube video: https://www.youtube.com/watch?feature=player_embedded&v=Z0FbTNiIx0M

Also in the video is said that EV, HiSound and Telefunkin capsules can be used so I assume these mics are shure compatible also. Audix capsules need that adapter to support Shure threading so audix transmitters does not work with shure, neither does senheiser.

Edit:

I went to EV and Telefunkin websites and it seams their mics thread size seem similar to shure when looking the mics so I guess this is confirmed.

I think you should email those manufacturers to confirm your visual observations.

[Jeremi Roivas]

I can now confirm that Alpha Audio One mics do support Shure capsules but, 1. the9V pin is missing and 2. the 9V line is not soldered from transmitter.



When these modifications are done my sm58 capsules do work nice. They have a strong signal even better than Alpha Audio One capsules.

[Don Boomer]

When these modifications are done my sm58 capsules do work nice. They have a strong signal even better than Alpha Audio One capsules.

You might wanna keep an eye on that.  Most Shure wireless capsules have a preamp built into the capsule that may be unnecessary to your transmitter.  You may end up overdriving the input to the transmitter.

[Jeremi Roivas]

You might wanna keep an eye on that.  Most Shure wireless capsules have a preamp built into the capsule that may be unnecessary to your transmitter.  You may end up overdriving the input to the transmitter.

Hello, the sm58 is just slightly louder. I measured Shure transmitters had 1.7V center, 5V mid and outer is GND. My transmitter has 9V battery and measures were these: Center 3.7V, mid 8.2V-6V and outer is GND. Reminding that 9V batteries keep constantly about 8.4-6V voltage so thish is proper voltage for the capsule all time. The center higher voltage may provide some differency in signal streght or not but all and all Shure sounds a bit more volume than Alpha Audio mics. They are nearly the same but shure has more presence and stuff like that. So I think there are no issues atleast for sm58 capsules.

Still the voltages are better in this transmitter since it has more room for audio signal. 1.7v is often used as reference voltages in op-amp circuits because it can just fine hold the line level. 3.7 provides more than enough room.

[Tim McCulloch]

Hello, the sm58 is just slightly louder. I measured Shure transmitters had 1.7V center, 5V mid and outer is GND. My transmitter has 9V battery and measures were these: Center 3.7V, mid 8.2V-6V and outer is GND. Reminding that 9V batteries keep constantly about 8.4-6V voltage so thish is proper voltage for the capsule all time. The center higher voltage may provide some differency in signal streght or not but all and all Shure sounds a bit more volume than Alpha Audio mics. They are nearly the same but shure has more presence and stuff like that. So I think there are no issues atleast for sm58 capsules.

Still the voltages are better in this transmitter since it has more room for audio signal. 1.7v is often used as reference voltages in op-amp circuits because it can just fine hold the line level. 3.7 provides more than enough room.

Jeremi, That's not what Don is talking about.  He works for Line 6 and is familiar with the use of capsules on wireless transmitters.  I suspect he's familiar with the major brands and products and the differences between them.  It might be wise to consider his thoughts and examine different versions of the same mic element, as used by different transmitter manufacturers.  This is about the audio voltage level (not power supply voltages) sent from the capsule to the transmitter.

[Jeremi Roivas]

Jeremi, That's not what Don is talking about.  He works for Line 6 and is familiar with the use of capsules on wireless transmitters.  I suspect he's familiar with the major brands and products and the differences between them.  It might be wise to consider his thoughts and examine different versions of the same mic element, as used by different transmitter manufacturers.  This is about the audio voltage level (not power supply voltages) sent from the capsule to the transmitter.

What he really talks is that if Audio amplitude is overdriven this means 50% of amplitude of carrier signal. This causes distortion since phase sifts happens. Then you are not getting proper audio anymore and is very audible.

[Jeremi Roivas]

Here is more info with Alpha Audio Mic one Dual:

The battery case is so tight, that li-ion 9V batteries don't fit here. But workarraund is that you remove the battery case and add electric tape arround the li-ions cells:



Gig experience:

For quality wise I have to give thumb up! The build quality is professional on the receiver, the power button is smooth, heavy weighting type that screams professional. Same on gain potentiometers, smooth and heavy to turn. This mic set has good gain levels, where usual entry models, that I have seen, had to turn receiver gain to near max, this set needs clock 12 only. Same setup in mixer gain and you have plenty slider gain possibilites still for singers. The normal singer can have mid height of the slider and quiet singer you have really a lot of gain possibilites, on receiver, on preamp and on slider. 9V 1200mah li-ion battery lasted 6h gig without problem, altho I use them in Karaoke gigs and I use them off while not singing. How ever I made some studies on the factory used test battery type and this is it combaring to li-ion 600mah rechargeable cells:

[Thomas Le]

Considering that it's a knockoff of an older Shure design, I'm surprised the capsule fits.

Curious, where were the old capsules from?


Sent from my iPhone using Tapatalk

[Jeremi Roivas]

Considering that it's a knockoff of an older Shure design, I'm surprised the capsule fits.

Curious, where were the old capsules from?


Sent from my iPhone using Tapatalk

It was from Shure UL2 transmitter set. I bought them from guy that had no use for the tramitters as they have wrong UHF frequencies and gave them to me cheaply. This why I was able to measure how the Shure mics work and why the mic don't work with my set and what to modify that they work.

[Jeremi Roivas]

Hello, I confirm here that these Litelong 880mah rechargeable li-ion batteries fit into battery case. Very nice indeed!



I am adding later 102ohm test curve, here is picture after 5h passed:



Test 1:



Average current is: 73,4 mA
Battery rating for test 1: 734 mAh

Current was calculated using voltage/resitance in Open Office Calc same time when voltage was added per time.

[Jeremi Roivas]

Test curve for Litelong battery added.

[Mark Rombouts]

Idea: If you want to use Shure capsules....... why don't just by a Shure wireless system ?!

[Jeremi Roivas]

Idea: If you want to use Shure capsules....... why don't just by a Shure wireless system ?!

Obivious answer, I am electronics engineer and I know that all transmitters should work with other brand capsules, so the price is valid point to chose transmitter that can support better capsules and is cheap with good distance. Shure charges many hundred dollars more for 2 mics system with sm58 capsules and while I got capsules from second hand I wanted to pick cheap wireless set that supports shure capsules.

Another good point is that I expect to see many capsules in Finland to become cheaply avail becaus frequency changes in EU that denies some professional older frequencies to be used and therefore the transmitters and receivers goes to trash and capsules stay on the market.

[Jeremi Roivas]

I can confirm that the voltage level of carrier is a bit too high. This happens when battery is aproaching to 6v the sound gets distordted and thus needs battery swap. If the receiver would have 1.9v isntead the 3 volt dc it would keep the audio similar untile the batter drops dead. Anyway the mic lasts about 3*5h gis if you keep hitting battery off all the time. If keeped online for full 5h karaoke the mics can take 2  gigs and in third they will start to distord. Even so the improvement over alkalani is so much. Instead of 4,5h usage over 10 hours can be used with li-ions.

[Scott Holtzman]

Samson made a VHF diversity broadcast series with EV or Shure capsules.  The transmitters are nice extruded aluminum and the receivers are very rugged rack mount units designed for mobile production.

They appear on the used market every now and then, most people don't know what they are and you can get them for next to nothing.
 

The transmitters are synthesized and very stable.  Once I had to run the tuning procedure on a transmitter when the VCO went out of lock.

Samson also put the SM58 on cheaper fixed frequency RX's and TX's.  Stay away, they are 10+ years old and the crystals drift like crazy.  If you are a radio geek and have a service monitor it's no big deal however that's not a common item in most production shops.

[ProSoundWeb Community]