Sony ECM77B - Is this even possible?

[Pleasesendmemoney]

I have a Sony ECM77B lav mic with the standard XLR connector. My question is……is it possible to physically cut that XLR connector off and solder on a 3.5mm locked connector? And obviously still have it work properly.

[Tim Norris]

I do this (have it done for me) but with a TA5 for 'Lectro.

 

Cheers,

Tim

 

[dsound]

Hi Tim,

 

Can you share the pin wire assignment for the TA5 soldering.

 

Thanks!

[TVPostSound]

 

I have an ECM77B.

Why not put a battery in the preamp shell, and use a female XLR to 1/8" locking?

https://www.amazon.com/Sennheiser-004840-CL-2/dp/B003LRYUBE/ref=asc_df_B003LRYUBE/?tag=hyprod-20&linkCode=df0&hvadid=693544921083&hvpos=&hvnetw=g&hvrand=17931085367693043547&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9190171&hvtargid=pla-633362881917&psc=1&mcid=b1eeffbbe6ec34ad86ff1f751896707f&gad_source=1#customerReviews

 

[Pleasesendmemoney]

9 hours ago, Tim Norris said:

I do this (have it done for me) but with a TA5 for 'Lectro.

 

Cheers,

Tim

 

Tim……who did it for you? Was is someone available to us or is it a friend? I can solder. If it’s possible could you point in the right direction as how to do the conversion? Thank you very much.

[Pleasesendmemoney]

12 hours ago, TVPostSound said:

 

I have an ECM77B.

Why not put a battery in the preamp shell, and use a female XLR to 1/8" locking?

https://www.amazon.com/Sennheiser-004840-CL-2/dp/B003LRYUBE/ref=asc_df_B003LRYUBE/?tag=hyprod-20&linkCode=df0&hvadid=693544921083&hvpos=&hvnetw=g&hvrand=17931085367693043547&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9190171&hvtargid=pla-633362881917&psc=1&mcid=b1eeffbbe6ec34ad86ff1f751896707f&gad_source=1#customerReviews

 

My goal here is to use the mic with a Tentacle Track E recorder which is very tiny. The part you mentioned would make an already huge XLR connection that much bigger. I need minimalist so I’m going for small, unobtrusive. Great idea for other applications but not my use case. Thank you very much for the idea. I think it will help folks who need that connection. 

[Tim Norris]

On 8/24/2024 at 11:31 PM, dsound said:

Hi Tim,

 

Can you share the pin wire assignment for the TA5 soldering.

 

Thanks!

 

I can't, because I do not do it myself. I believe wiring instructions come with all 'Lectro transmitters.

 

Cheers,

Tim

[borjam]

I found service manuals for the ECM77 microphones (and others)

 

https://www.manualslib.com/download/2989956/Sony-Ecm-44bmp.html

 

According to a note it includes ECM-77B in an appendix.

 

The diagrams include cable colors, so I guess it will be possible. Note: the capsule assembly includes some electronics, a FET transistor. I would check whether the part numbers are the same for the BMP/B variants.

 

 

[Pleasesendmemoney]

11 hours ago, borjam said:

I found service manuals for the ECM77 microphones (and others)

 

https://www.manualslib.com/download/2989956/Sony-Ecm-44bmp.html

 

According to a note it includes ECM-77B in an appendix.

 

The diagrams include cable colors, so I guess it will be possible. Note: the capsule assembly includes some electronics, a FET transistor. I would check whether the part numbers are the same for the BMP/B variants.

 

 

Great find. Thank you very much. It’s a bit over my head technically. It seems like I could, in fact, just cut the wire off the large end where the battery goes and solder the wires to a 3.5mm TRS Locking Connector. But I’m not 100% sure about that. 

[Pleasesendmemoney]

I’m just not 100% sure about cutting the wire and soldering it to a 3.5mm connection. My other option is to sell it. Hmmmm……

[Rick Reineke]

I had a ECM 77 which which I converted to use with a Tx, though it was long ago and I do it recall the pin assignment. I also put a compatible jack on the XLR power supply's cable, so I could still use it in a hard wired scenario.

[Pleasesendmemoney]

On 9/8/2024 at 11:01 AM, Rick Reineke said:

I had a ECM 77 which which I converted to use with a Tx, though it was long ago and I do it recall the pin assignment. I also put a compatible jack on the XLR power supply's cable, so I could still use it in a hard wired scenario.

Rick......please excuse my lack of knowledge on these matters but.....what did you mean when said "to use with a Tx"? What is a Tx? 

[Rick Reineke]

Tx is an abbreviation for "transmitter"

Rx is an abbreviation for "receiver"