Good afternoon.
I have a Countryman MEMWF05BSL with the TA4F connector. I no longer have the Shure transmitter/receiver, and would love to use it hardwired.
I have a ZOOM F4 recorder with XLR inputs that can be powered with either phantom or plugin power.
Is there a converter or a diagram available so that I can do my own connector?
Thanks guys,
David
I have a Countryman MEMWF05BSL with the TA4F connector. I no longer have the Shure transmitter/receiver, and would love to use it hardwired.
I have a ZOOM F4 recorder with XLR inputs that can be powered with either phantom or plugin power.
Is there a converter or a diagram available so that I can do my own connector?
Thanks guys,
David
It is not a matter of just a connector.
Your microphone requires a DC voltage source of a few volts and has a single unbalanced output lead that doesn’t really want to work into a 150 ohm balanced input.
A typical adapter would be like:
https://www.sweetwater.com/store/de...VAYzICh00jQaNEAQYDyABEgKZXPD_BwE&gclsrc=aw.ds
You can make one with a center tapped microphone transformer, a resistor, zener diode and filter capacitor.
The resistor goes from the output winding center tap to the zener-capacitor low voltage source. The output shield is also the power supply and microphone capsule common.
Your microphone requires a DC voltage source of a few volts and has a single unbalanced output lead that doesn’t really want to work into a 150 ohm balanced input.
A typical adapter would be like:
https://www.sweetwater.com/store/de...VAYzICh00jQaNEAQYDyABEgKZXPD_BwE&gclsrc=aw.ds
You can make one with a center tapped microphone transformer, a resistor, zener diode and filter capacitor.
The resistor goes from the output winding center tap to the zener-capacitor low voltage source. The output shield is also the power supply and microphone capsule common.
Don't know why a XLR input would be 150 ohm input impedance. I don't own a Zoom recorder. The PV8 mixer I would sing into the XLR input doesn't have a schematic, but measures 10.5kohm between pins 2 & 3 and rising impedance 2 to 1, >56k when I got tired of watching the cap charge up. My cs800s amp has 2 & 3 of the XLR both going through 10 uf caps, then 5 k resistors to + - inputs of a 4560 op amp. 10 k resistor shorts across 2 & 3 before the two capacitors. 2 has a parallel switched source labeled "phantom" of 1 Kohm to V+ which appears to be +15.
I'm not making general interfaces to fit all situations. PV8 mixer CS800s amp & MMA-875T mixer-amp are the entire range of XLR inputs I might sing into. Mike transformers are strange products sold only by "businesses" like Sweetwater that refused to sell me a headset mike off the website unless I personally talked to a salesman- then no salesman ever answered the phone.
Here is schematic only I can't draw it under this op system. **** diyaudio forum forced me to update from lubuntu 11.04 to lubuntu 20.04 and there is no way to install geda schematic draw which worked. The kicad editor 20.4 does link to doesn't have anything in the library like inputs, outputs, voltage sources, resistors, capacitors or inductors. Most entries a bunch of useless obsolete microprocessors. )(&%($*+
So I'm building an interface for a 3 to 5 v cardiode capsule I bought from newark. XLR 2 to 3 are bridged by a 4.7k resistor series a 3.3 v zener diode. Line of diode to resistor, cathode to 3. Off line of diode runs a 2 k resistor to one lead of the capsule I call "hot". Other lead of capsule connects to 3. From capsule hot runs a 1 microfarad capacitor to XLR 2 again.
Only way I see to acquire a TA4M connector is a dead shure radio mike body. I don't have one: the dying radio mike at church has a three insulator 1/8" phone plug. So I would cut the TA4F connector off a countryman head mike, if I bought one. Useless garbage connector. Who wants to charge a radio mike with a patented battery all the time? At least the radio mike at church used AA batteries. Patented batteries are guarenteed planned obsolescence components. I would sing 20 feet from the mixer. A 2 k resistor should be able to drive 20' of twisted pair parallel 10 kohm mixer input resistance. I don't need a ******* radio. I do need a mike less obtrusive than the SM58 on a boom Billy Joel learned to sing into while playing the piano.
I'm not making general interfaces to fit all situations. PV8 mixer CS800s amp & MMA-875T mixer-amp are the entire range of XLR inputs I might sing into. Mike transformers are strange products sold only by "businesses" like Sweetwater that refused to sell me a headset mike off the website unless I personally talked to a salesman- then no salesman ever answered the phone.
Here is schematic only I can't draw it under this op system. **** diyaudio forum forced me to update from lubuntu 11.04 to lubuntu 20.04 and there is no way to install geda schematic draw which worked. The kicad editor 20.4 does link to doesn't have anything in the library like inputs, outputs, voltage sources, resistors, capacitors or inductors. Most entries a bunch of useless obsolete microprocessors. )(&%($*+
So I'm building an interface for a 3 to 5 v cardiode capsule I bought from newark. XLR 2 to 3 are bridged by a 4.7k resistor series a 3.3 v zener diode. Line of diode to resistor, cathode to 3. Off line of diode runs a 2 k resistor to one lead of the capsule I call "hot". Other lead of capsule connects to 3. From capsule hot runs a 1 microfarad capacitor to XLR 2 again.
Only way I see to acquire a TA4M connector is a dead shure radio mike body. I don't have one: the dying radio mike at church has a three insulator 1/8" phone plug. So I would cut the TA4F connector off a countryman head mike, if I bought one. Useless garbage connector. Who wants to charge a radio mike with a patented battery all the time? At least the radio mike at church used AA batteries. Patented batteries are guarenteed planned obsolescence components. I would sing 20 feet from the mixer. A 2 k resistor should be able to drive 20' of twisted pair parallel 10 kohm mixer input resistance. I don't need a ******* radio. I do need a mike less obtrusive than the SM58 on a boom Billy Joel learned to sing into while playing the piano.
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I do build my own binaural microphones using Primo capsules, powered by phantom power using a diy pcb. Works well, so I might just cut the TA4F connector and create my own 3.5 or xlr connector. Do you guys know what DC voltage is required by the Countryman capsule? Thanks
So, I finally decided to cut the existing TA4F connector and replaced it with a Neutrik 3.5mm male connector, soldered using a diagram for Zoom recorders 3.5mm plugin powered from https://countryman.com/microphone-wiring/.
Image from https://countryman.com/images/wiring/EMW_D3.png
From MEMWP05BAX (AX Diagram) to MEMWP05BD3 (D3 Diagram)
Working perfectly plugged directly into my audio interface (5v DC). Will use it with my custom XLR phantom power to 3.5mm bodypack hooked with XLR cable to my Zoom F4 Field Recorder.
Thanks a lot everyone!
Image from https://countryman.com/images/wiring/EMW_D3.png
From MEMWP05BAX (AX Diagram) to MEMWP05BD3 (D3 Diagram)
Working perfectly plugged directly into my audio interface (5v DC). Will use it with my custom XLR phantom power to 3.5mm bodypack hooked with XLR cable to my Zoom F4 Field Recorder.
Thanks a lot everyone!
