Tram TR-50 to sennheiser g3

G

gpforet

Well-known member
I have the opportunity to pick up a tram tr-50 with the TR-79 power supply for a good price and would like to be able to use it with my Sennheiser G3 wireless.

Can anyone provide guidance on how I can do this and make the tram usable with both? I'm very comfortable with a soldering iron and attaching connectors. I'm not sure about the wiring and if there would be impedance problems.
 
gpforet said:
I have the opportunity to pick up a tram tr-50 with the TR-79 power supply for a good price and would like to be able to use it with my Sennheiser G3 wireless.

Can anyone provide guidance on how I can do this and make the tram usable with both? I'm very comfortable with a soldering iron and attaching connectors. I'm not sure about the wiring and if there would be impedance problems.
Click to expand...

You can cut the cable down near the power supply end and insert an in-line TRS male -> TRS female breakaway connector. That way you can separate the capsule from the power supply and usei it with the Sennheiser transmitter or re-connect them ans use it hard-wired with phantom. The transmitter input is wired for signal hot to tip, signal ground to sleeve, ring jumpered to sleeve. Which colour conductor in the cable is which I don't know. The wires in the cable are tiny - even if you're experienced with an iron you might want to have someone who has done it regularly and so has lots of practice at it do the job. Pro audio services like Trew Audio or Coffey Sound do this sort of job routinely and it usually only costs in the neighborhood of $25 or so. Plus they have the know-how to do it right so it works properly in the end. You could also send it in to TRam and have them do the job for you.
 
Steve House said:
You can cut the cable down near the power supply end and insert an in-line TRS male -> TRS female breakaway connector. That way you can separate the capsule from the power supply and usei it with the Sennheiser transmitter or re-connect them ans use it hard-wired with phantom. The transmitter input is wired for signal hot to tip, signal ground to sleeve, ring jumpered to sleeve. Which colour conductor in the cable is which I don't know. The wires in the cable are tiny - even if you're experienced with an iron you might want to have someone who has done it regularly and so has lots of practice at it do the job. Pro audio services like Trew Audio or Coffey Sound do this sort of job routinely and it usually only costs in the neighborhood of $25 or so. Plus they have the know-how to do it right so it works properly in the end. You could also send it in to TRam and have them do the job for you.
Click to expand...

Yes - but make sure you use a lockable 3.5mm jack plug and not a normal one.

The lockable plug keeps the connector tight and prevents movement and crackles.
 
Follow up:

Just for giggles, I cut the wire connecting the TR-50 to the TR-79, leaving enough pigtail out of the TR-79 to attach a female 1/8" in-line jack.

I connected the shield of the TR-50 cable to the sleeve of a 1/8" TRS connector. I connected the center core to the tip. I did not connect the ring of the connector.

The mic behaves just fine with my sennheiser G3. while monitoring, I jumpered the sleeve to the ring and could hear absolutely no difference in regards to self-noise, hum (which is non-existent), and frequency response. So I left the ring disconnected.

I've now got a functioning TR-50 which I picked up for $75 connected to my G3. I'm a happy camper.
 
gpforet said:
Follow up:

Just for giggles, I cut the wire connecting the TR-50 to the TR-79, leaving enough pigtail out of the TR-79 to attach a female 1/8" in-line jack.

I connected the shield of the TR-50 cable to the sleeve of a 1/8" TRS connector. I connected the center core to the tip. I did not connect the ring of the connector.

The mic behaves just fine with my sennheiser G3. while monitoring, I jumpered the sleeve to the ring and could hear absolutely no difference in regards to self-noise, hum (which is non-existent), and frequency response. So I left the ring disconnected.

I've now got a functioning TR-50 which I picked up for $75 connected to my G3. I'm a happy camper.
Click to expand...

Did you use the proper locking TRS connector as John pointed out you should?
 
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