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jacethebase View Drop Down
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    Posted: 05 December 2017 at 5:51pm
Hi guys

I've got to make up some odd leads to go from a beta91 to a sennheiser EW300 G3 belt pack. So it's the mini xlr (3pin lemo) to the sennheiser 3.5mm locking jack.

I would just wire it as normal with pin 2 hot and 3 cold. But the pins are labelled diffrently to standard XLRs.

Anyone done this before? Worst case cenario I will just make them up and trial error.


Real world experience please :)


Thanks in advance.

Jace
www.wedding-production.co.uk

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SamV View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote SamV Quote  Post ReplyReply Direct Link To This Post Posted: 06 December 2017 at 2:57pm
Labelled different how? Tbh never usually made a difference for me.
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jacethebase View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote jacethebase Quote  Post ReplyReply Direct Link To This Post Posted: 06 December 2017 at 3:07pm
Hi Sam,

Have you made up mini XLR - 3.5mm jumpers?

On a standard XLR the 2 pins flat against each other are 1&2 the mini ones they are different.
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Conanski View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Conanski Quote  Post ReplyReply Direct Link To This Post Posted: 07 December 2017 at 4:37am
Senny wireless beltpack mics are wired unbalanced because the beltpacks can be used for both mic and line inputs.
https://sennheiseruk.happyfox.com/kb/article/104-ew-plug-pin-configuration



Edited by Conanski - 07 December 2017 at 4:40am
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MattStolton View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote MattStolton Quote  Post ReplyReply Direct Link To This Post Posted: 07 December 2017 at 10:13am
Bigger issue will be providing enough phantom voltage to power the Beta91, needs 11-52V, i.e. nominal 48V Phantom.

Beltpack with a couple of AA in will not be man enough? Electrets typically work off 5ishV? With 5V bias present, I doubt you would get enough voltage, and effectively it would "clip" early and be unable to cleanly reproduce wave form?

The mini 3 pin XLR drives the preamp stage, this stage may bias the electret capsule within to 5 V, but the preamp may need more volts?
Matt Stolton - Technical Director (!!!) - Wilding Sound Ltd
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jacethebase View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote jacethebase Quote  Post ReplyReply Direct Link To This Post Posted: 07 December 2017 at 7:50pm
Originally posted by Conanski Conanski wrote:

Senny wireless beltpack mics are wired unbalanced because the beltpacks can be used for both mic and line inputs.
https://sennheiseruk.happyfox.com/kb/article/104-ew-plug-pin-configuration




Thanks mate, That worked a treat all going now :)

I assumed it would be a balanced in to the pack. Wired it to the tip and nulled out the cold to the ground and KA-Pang :)
www.wedding-production.co.uk

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