Using multiple usb inputs

Sorry to ask what is probably a pretty amateurish question, but how do you configure two usb mics to function as 2 different inputs?
Both mics are recognized and work individually, but when I plug them in only one functions properly.
Thanks in advance for any advise and assistance.

Indeed I did. I even packaged them both as an aggregate device, and made that device the default for core audio and still nothing.
I suppose I am a little perplexed here and perhaps out of my depth. (previous protools user here) There clearly has to be a way to utilize two inputs, what is the best way to achieve this? Is it the fact that I am using two usb devices in two separate usb ports?
Thanks for your assistance.

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Is it possible to record directly into garageband using multiple usb's ( guitar+ vocal mic) ? If yes how so?

You'll have to create an aggregate device in the Audio-Midi Utility. Search the Help for "aggregate" for instructions!

Multiple usb inputs

I am new to mac products and garage band. I am trying to connect two instruments to my MacBook Pro via the available two USB ports and record both simultaneously. When both are plugged in, the Mac system recognizes both are plugged in, but GarageBand only shows one available. Any suggestions for multitrack recordings via USB inputs would be appreciated!

edgeevans wrote:
I am trying to connect two instruments to my MacBook Pro via the available two USB ports and record both simultaneously.
assuming you are using audio interfaces (not MIDI instruments), you need to first create an Aggregate Device:
http://www.bulletsandbones.com/GB/Tutorials.html#allaboutaggregatedevices
(Let the page FULLY load. The link to your answer is at the top of your screen)
then you can record on multiple tracks:
http://www.bulletsandbones.com/GB/Tutorials.html#bsqrecordmultipletracks
(Let the page FULLY load. The link to your answer is at the top of your screen)

Errors when using multiple USB-8473 devices

I am trying to put together an application that uses five USB-8473 devices simultaneously on one PC. I can't seem to get more than two of them running without getting error -1074388956 (object handle invalid). Any two of them will run together, but when I go from two devices to three, I get the error every time. I have gone through and made sure that the object handles I am providing to ncReadNetMult are the same ones generated by ncOpen. Is there some limit to the number of these devices that can be run at the same time on one PC?
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Marcus,
Can you please clarify your comments regarding the USB hub? Specifically why you believe the hub is not part of the issue? I looked into the spec for the USB 8473 and these devices are rated at 250mA and 5VDC per module. Can you please check the rating of your hub? If you are trying to run 5 modules simultaneously, you will need the hub to output 1250mA to power all 5 modules. One of the common current output ratings is 500mA per hub - thus your ability to run only 2 modules.
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To me it sounds as though your hardware requires more current than the hub can supply.
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Multiple USB inputs - Keyboard/Mouse, Novation Remote, and Mackie MUC Pro

Im running a Macbook Pro, 10.4 with Logic 8. I just got a Mackie Universal Controller Pro and also use a Novation Remote 49. Ive got an additional 20" screen, with the USB inputs as well.
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Hey - Thanks for the quick response.
'Why don't you leave the controllers connected directly to the computer, and connect your keyboard/mouse to the screen's USB ports?"
Problem is - there are only two USB ports on the compute. In order for the external displays USB port to work, it has to be plugged in to the computer via USB as well. I have the mouse plugged in to the qwerty keyboard, but they both need to be plugged in to a USB port somewhere regardless.
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It seems like the problem is really trying to plug an external controller in to an apple displays USB port (so that could be a power issue, although the Mackie is self powered, or just general connectivity).
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Hello (and, HangTime, if you're there, will really appreciate your answer)
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3. Any feedback on the CAD U1 Mic? Amazon has it at attractive price for a total novice.
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BPWMorro wrote:
2. If I acquire an external Mic can GB accept input from it at the same time as the keyboard?
yes:
http://www.bulletsandbones.com/GB/GBFAQ.html#maxnumrecordabletracks
(Let the page FULLY load. The link to your answer is at the top of your screen)
3. Any feedback on the CAD U1 Mic? Amazon has it at attractive price for a total novice.
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I surf therefore I am....
Attachments:
demo_nolvl.vi ‏27 KB

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How to use multiple midi controllers with Mac book pro (2 usb)?

I have a newer macbook pro that has 2 USB ports, and a lightning port and a firewireport.
On stage I will be using the firewire port connected to a Presonus Firestudio mobile to use as the interface to the house mixer.
I will use 1 USB for my M-audio Axiom 61
I will use the other for my Yamaha WX-5 Wind synth
I'd like to be able to get the apogee midi foot controller to control the playback audio. For example I'll be using it to stay in a solo section, then step on it to move it forward ot the next section when I am done soloing
I'd also like to use some sort of midi switch to turn on vocal effects of the mic.
Anyway since I only have 2 USB ports, how should I connect the 3rd, or 4th USB midi controller?
Will a USB hub work to do this? If so, will I always have to remember to use the same controler in the same exact hub input to make sure everything maps the same?
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Dan

Hi there,
is a question which many of us have spent ...
I think the obvious answer is that yes you can use a hub and connect everything. however ....
sincerely advise you to buy a good hub that is well feasible, the last thing you want on stage / rehearsal is one of midi controllers stop responding, or stay with hanged notes... etc., do not buy just because it is cheap it has to be stable and viable, some bring cable for connecting wall power just to not drain power from the USB port.
Other things to try is to distribute as much equipment for USB / Midi.
For example one of midi controllers connect via USB but not by Midi outside the Presonus Firestudio. Connecting Presonus Firestudio to a single USB port as it is a main equipment.
but it really is an issue that greatly limits the use of USB devices.
Try it and tell me how it went. Good luck
(sorry for my english i´m Portuguese)

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Solved!
Go to Solution.

You would first need a hub that allows you to switch between multiple pc's and then only one pc at a time would be connected and in control.
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Using MainStage with multiple MIDI inputs (two keyboards!)

Hi Guys,
I use two keyboards for my live gigs, and am thinking about moving all my sounds over to MainStage. Most of my recording uses Native Instruments and Logic's standard AU instruments, and then I have to find similar sounds on my Korg and Kurzweil for live...
My question is... can you use MainStage with two MIDI controllers? I'd obviously want to set up the presets in MainStage so that there are different instruments being controlled by each synth.
Would love any advice on whether this can be done, and a quick pointer as to how...
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Easily done (I'm using two USB controllers on a gig now). Just set them up in Layout mode, then be sure to select the input of choice for your specific channel strip(s) in each patch. Or of course you can set things up at the set or concert level as well.

Using multiple usb inputs

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