Transformer Isolated Passive Mic Splitters?
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- Опубліковано 29 чер 2015
- In this video we take an inside look at passive transformer isolated microphone splitters and how we use them in the real world.
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Whirlwind IMP Splitter 1x3 - amzn.to/2iNdWLM
Link to Manufacturer Docs-
whirlwindusa.com/media/uploads...
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Check out www.dcsoundop.com for more content and discussion. - Наука та технологія
I'm looking at making a home-made 1in 8 out XLR mult. box with audio isolation on each out, and have been having trouble finding wiring diagrams for how I might approach that. Thank you much for this video, helped a ton!
If you used 3 or more of those outputs at once you would run into level and impedance problems. For 3+ splits you need active splitters.
What transformer do you suggest for a high z 1x2 splitter?
Hey, thanks for the informative video.
I'd love to see your line level tear down video but can't find it anywhere. Please do let me know if it's up somewhere :)
Hugh, thanks for the message! I've been meaning to finish up the line balancer / splitter video for a while now, I'll bump it up to the top of my list for the coming weeks. Not sure how that one keeps getting pushed off.
Hi, really nice video! I know this is an old thread but I'm wondering what kind of transformer can be used to build something similar... I guess some small 1:1 audio TF but not sure about any other specs. Can you help me with that? Thanks!!
Hi Fernando, the transformer that Whirlwind uses in these units is a pretty nice one that they make called the TRSP2 - you can check out the specs for that one and their other transformers that they use at this link whirlwindusa.com/catalog/black-boxes-effects-and-dis/transformers-isolation-devices/whirlwind-transformers - hopefully that will help you narrow down what you need for your project, after that it's all down to how much you're willing to spend! Thanks for the question!
FOH controls phantom as a general rule of thumb
Nice video, very useful.
Question: Will such device degrade audio quality somehow?
I guess the Direct out should lose some of the signal strength, since transformer will have resistance/impendance. Is this correct? If yes, what is the drop level? Is there any fidelity loss for direct output?
For isolated out I guess it is all about transformer quality.
My goal is to get the best raw signal to recording desk (direct) while still having a monitoring signal with processing chain (isolated).
Hi, thanks for the question! As you said, it's all down to the quality of the transformer for the isolated signal. You might find this Jensen reference helpful in your research - jensen-transformers.com/wp-content/uploads/2014/09/Audio-Transformers-Chapter.pdf -
On a passive splitter like this, you should not experience any significant signal loss on the direct out of a 1x2 split. Audio fidelity will be affected though by the number of splits, cable lengths in the signal path, and other impedances in the system you're using. Whirlwind has a great white paper on the subject that goes into better detail - whirlwindusa.com/support/tech-articles/microphone-splitters/
Beyond this, you get into the world of active splitters, which of course has it's pro's and con's too.
Good luck!
@@DcSoundOp That Audio Transformer PDF is absolutely solid. I've been looking for explanations like that for ages. Thanks.
Best to use a full split snake to feed either a full monitor or recording console, as this is only 1 channel.
Hi, Thanks for such a useful video.
question here, im using a 'Y' cable to monitor my vocal mic in my homestudio while recording, haven't had problems (i guess), but recently heard that not only i could run into some but also that the signal gets poor with a 'Y' cable, Does a mic splitter like this one helps to avoid that? will i get a pure signal meaning more quality in the recording?
Thanks!
Great question Belam! In a situation like yours where you are only splitting the signal in two destinations, and doing so in a controlled environment, there is likely no need for an ISO unless you are having an issue. When splitting the signal into more destinations, or connecting with gear that you don't have control over (someone else's rig etc.) that's where an ISO can save your butt. If your current setup is working, the ISO will likely not give you any audible improvement, but if you're experiencing currently, it may be worth a look.
Ok, sometimes i have a noise, but its rare and it goes off by either moving the cable or unpluging and pluging it back again, so i'll do some tests, cause i have a very cheap cable and done myself the 'Y' split (and im not a soldering expert either xD )
i dont have too many cables around, and always try to not cross electric with audio cables too
thank you very much, will see whats happen
In my opinion, using Y cables to split mic signals can have unpredictable results. This has less to do with the cable itself, and more to do with the devices you're feeding the mic to. This gets technical - if you're feeding two mic preamps that have similar impedance, then you're generally fine. It's when you feed two preamps that have different impedance that you run into trouble - potential loss of low end & noise.
If you like your rig and can afford a splitter, then go for it! Otherwise, there are plenty of decent cheap mic preamps that have more than one output, eliminating the need for a splitter.
Hello!! I'd loved your video, it has the info I was looking, however I'm wondering If I use a Condenser Mic and I'm sending the signal to both a monitor mix console and a FOH mix console....who would apply Phantom Power to the mic?? I understand the cable that carries phantom power should be plugged into the "direct out"....but Who would send Phantom Power and how?
Thank you very much!!!
Hey Mauricio, you've got it right. Whoever takes the direct out needs to supply the phantom since the transformer outs won't pass it. Depending on the gig and what's happening, that could be FOH. If there is someone recording, it might be them that wants the direct out. Thanks for the great question.
@@DcSoundOp thank you very much for replying so quickly!
I'd love to split a condenser mic signal. 1 copy to my monitor mixer (which I operate) and the 2nd copy to FOH. I'd love to have control of the phantom power because I'd love to protect my gear just in case. But I was wondering if I apply phantom power to the mic (via the direct output), will FOH receive mic signal even though the iso output doesn't pass phantom power?
Thank you very much!!
Hey, what kind of transformer did you use? Are there any alternatives to the one you used? I also need 1 input to 3 outpout
This is an off the shelf Whirlwind splitter that uses their transformers.
So how do we use phantom power for Overhead mic. Should i use Y cable spliter? Will that be okay?
Hey Joe, using a transformer split you just need to connect your phantom power source to the direct output side. That side does not go through the transformer, and will pass phantom as normal. Thanks for the great question 👊🏼
@@DcSoundOp so i can get the same signal for both FoH and monitor console right? Just want to clear this question. Thanks for your answer.👍
@@JoeKorenOnemanband yes, absolutely 👍🏼
Will the mic output level stay the same or become lower when using this?
Disperse Media With modern equipment, you won’t see much change. This would depend on the gear & microphones you’re connecting & the lengths of cable runs involved. It would still be a negligent difference in most cases.
Thanks for voiding your warranty in order to satiate my morbid curiosity.
That's what I'm here for Jason!
Better to split a line level signal, so you don't lose a chunk out of your EQ at 1K
I'm not sure I'm following what you're suggesting here... this video is about splitting mic level signals specifically. Can you elaborate at all?