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Possible to Power USB Microphone + Midi Controller w/o External Power?

Hi everyone, I currently run a set up of

Zoom H2 and USB Powered Midi Controller (iRig Keys) > Powered USB hub (by a cellphone powerbank) > CCK > iPad Air

The Zoom H2 powers up without external power if it's plugged in by itself (i.e. without the midi controller) through the hub but when both devices are plugged in, the iPad does not put out enough and they both shut off with the "not enough power" message.

I record mainly vocal + instrument recordings and am looking to simplify my solution for a truly portable set up and I was wondering if the typical USB Microphones can draw USB power direct from the iPad through the hub when simultaneously plugged in with the iRig Keys? The mic currently in my sights is the Samson Go Mic but I have no idea if something better at that footprint is available!

I am not looking to run them through an interface and don't see any reliable source of information regarding this so am hoping someone can help me out! Thanks a tonne!

Comments

  • @necrome said:
    Hi everyone, I currently run a set up of

    Zoom H2 and USB Powered Midi Controller (iRig Keys) > Powered USB hub (by a cellphone powerbank) > CCK > iPad Air ...

    Take a look, maybe somewhere in here: http://forum.audiob.us/discussion/490/recommend-an-interface/p9

  • edited July 2015

    @necrome said:
    I was wondering if the typical USB Microphones can draw USB power direct from the iPad through the hub when simultaneously plugged in with the iRig Keys? The mic currently in my sights is the Samson Go Mic but I have no idea if something better at that footprint is available!

    I'm not sure I understand you right. Do you want to get rid of the power bank altogether or do you want to have a usb mic that plugs directly into the cck when you're not using the midi controller?

    The ipad will power the Go Mic on its own, but I'm pretty certain it won't power two devices. So for that you will need to power the hub externally as you've been doing.

    Have you considered plugging a dynamic mic into the headphone jack? That would eliminate the hub altogether. It won't give you pristine audio quality but considering its price the Go Mic won't give you that either.

    If you're ready to invest more you could try the Zoom H5. I own an H2 and the H5 is supposed to work better with ipads.

    USB power issues can be tricky. I hope you succeed in your attempts.

  • edited July 2015

    Thanks @Axxx! Yea I'm looking to eliminate the need of a powerbank altogether and was wondering if the iPad can power two devices at the same time. Say if I were to plug in a dynamic into the headphone jack, what would I have to do to monitor my sound? Is there a splitter sort of device? I think I saw something by TC Helicon called the Dynamic Mic Adapter or something?

    http://www.tc-helicon.com/en/products/dynamic-mic-adapter/

    or is there a better/more affordable solution?

  • The Dynamic Mic Adapter you linked to is essentially a splitter. It has a headphone output and a mic input so you would be able to monitor yourself while singing.

    Here's something that looks even more interesting:

    http://www.ikmultimedia.com/products/irigpre/

    It's battery powered and even has phantom power. If you already have a nice dynamic (or even a condensor) mic this might be the best sounding cheapest solution ;-)

  • You will need a preamp to get an acceptable signal from a dynamic mic. Go for the irig pre.

  • Novation xio, can be found cheap used. Great Synth, midi controller, and 2 channel audio interface, 1 xlr, 1 line. Preamp is pretty good as are converters on output. Can power by AC or batteries while on iPad. It can also power by USB but not from the iPad. And it can stream the synth through the USB to iPad as well. Of course it works on Mac and PC too.

    25 and 49 key versions. I have the 25, have had it for about 5 years and done hundreds of gigs with it. The x station will also work I think.

  • And here ya go, someone on this board should buy this. ( not mine, just did a search)

    http://pages.ebay.com/link/?nav=item.view&alt=web&id=271924032520&globalID=EBAY-US

  • Not sure if you've already tried this, and it doesn't always work, but if you plug both interfaces into the hub, without powering it up, but BEFORE you plug it into the iPad, sometimes you can fool the iPad into providing power to the interfaces. This works quite often for me.

  • A little late to the convo here but... @necrome - the Dynamic mic adapter is a great little tool for getting a mic into the headphone jack of an iPad, and your actually do not need a pre-amp. (a pre-amp would offer better sound quality of course, but I've used the dynamic mic adapter plenty here in the office and the signal I get is just fine.) I am using it with a TC MP-70 microphone, which tends to be a little naturally hotter than say your average 58, but most dynamic mics I've tried work just fine.

    The dynamic mic adapter can be ordered online(from the USA) here:
    http://us.store.tc-helicon.com/products/tc-helicon-dynamic-mic-adapter?variant=1101277703

    -on that page there's a link a to a product video that gives a good little overview of the device, the signal levels you see briefly in the app I am using (VoiceJam Studio) we're all acheived with a mic directly plugged in through the adapter, no preamp.

  • @TCapps that's an amazing reply! I should get one of those then! I ordered a Rockit Splitter before your reply and am only hoping it works the same way as a Dynamic Mic Adapter! My only worry is the noise level when I recordm. Is the TC Adapter any different from say a generic splitter?

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