Duet 2 (USB)

Using Duet with Apple Logic

 

Go to the Logic Pro or Logic Express menu and choose Preferences > Audio.

 

duet2-logic-prefs

In the Core Audio pane of the Device tab, select Duet 2 for Output Device and Input Device.

 

duet2-logic-prefs2

 

 

Set the I/O Buffer Size to 128.

Click Apply Changes at the bottom of the Preferences window.

 

By selecting Duet 2 input and output labels in Logic, the labels you see in Logic’s Channel Strip input and output slots correspond exactly to Duet 2’s hardware inputs and outputs, making I/O assignment much easier.

1. In Logic, choose Options > Audio > I/O Labels.
2. Select the labels in the Provided by Driver column.
3. Close the IO Labels window.

duet2-logic-iolabels

 

 

Now close the Logic Pro Preferences window and select
New > Collection > Empty Project from the Trackmenu.

 

duet2-logic-emptyproject

 

If you are recording a single microphone or instrument, make the following selections in the New Tracks dialog box:

Number: 1
Type: Audio
Format: Mono
Input: Input 1
Output: 1-2
Check the Input Monitoring checkbox
Check the Record Enable checkbox

duet2-logic-template

 

Logic will now ask you to name the project and save in on your hard drive.

 

duet2-logic-saveproject

 

Click the Record button in the transport control at the bottom of the Logic window.

duet2-logic-record

You’re now recording with Duet 2!

Duet 2 (USB) Maestro Error “No Apogee Systems Found”

Symptom: Apogee Maestro will not properly recognize Duet 2 (USB) if Mac user is logged into a Guest Account.  Maestro simply says “No Apogee Systems Found”.

 

Resolution: Confirm you have latest Duet software installed (you can download here), go to Apple Menu>System Preferences>Show All>System Accounts>My Account view>Set User Name to Admin, restart the Mac and Maestro will now launch successfully.

I hear a delay between what I play and what I hear in my monitors. Can I do anything about this?

This delay is called latency, and is caused by your computer and/or recording software.

Using the low latency mixer found in the Apogee Maestro 2 application may help. Click on the mixer tab to configure it to your desired settings. Be sure to set your desired output to “mixer” on the output page.

Error on launch of Avid Pro Tools (9 and up)

Symptom: Error on launch of Pro Tools: ”Pro Tools could not initialize the current playback device. Please make sure that the device has been configured correctly.” [381131]

Resolution: This could be an issue with the Current Engine setting in the Pro Tools Playback Engine.

This has been resolved in some scenarios by picking a different Playback Engine:

  • Launch Pro Tools
  • When the splash screen appears on the screen, hold down the “n” key on your keyboard, which will eventually open the Playback Engine dialog for Pro Tools.
  • At the top of this window, you will see the ‘Current Engine’ drop-down menu.
  • Choose a different Engine (such as Pro Tools Aggregate I/O)
  • Click OK.
  • This should allow Pro Tools to launch.

If the solution above fails, you can try deleting the “com.apple.audio.AggregateDevices.plist” preference on Mac OS X. You can find this preference file in the following location:
Macintosh HD > Library > Preferences

http://avid.force.com/pkb/articles/en_US/troubleshooting/en381131

Troubleshooting for Duet 2 (USB) not being recognized by Mac

Symptom: Duet not being recognized by the Mac

  1. If you’re using the power supply with Duet, please disconnect.   It is recommended to only connect via USB unless you are prompted to connect the power supply.  This will depend on certain power consumption requirements.
  2. Disconnect the USB cable from the Duet
  3. Download the latest Duet software installer here and run it.
  4. When the software installer asks you to connect a Duet 2, reconnect the USB cable to the Duet while pressing down on the rotary encoder knob.

 

Isn’t FireWire faster than USB?

“Why would Apogee use USB rather than Firewire for its recent Mac audio products like Symphony I/O, Duet 2 and ONE?”

 

 

Historically, Firewire has been the superior interface audio format on the Mac.  However, since the release of OS X 10.6.4, USB Audio is more stable, offers lower latency and provides the ability to connect your audio interface separate from an external audio hard drive on your Mac.

Apple Logic configured at a 96kHz sampling rate and 64 buffer setting, Duet USB’s analog in to analog out latency is 4.2 milliseconds, while Duet Firewire’s latency is 5.3 milliseconds.

Most audio software developers agree that recording audio to an external Firewire hard drive renders the best results. When the audio interface is connected to a different computer port than the audio drive, system performance is more stable. Thus, it’s preferable to use a Firewire hard drive and a USB audio interface.

 

Can I use two interfaces at the same time for more I/O? (aggregation)

Yes, Mac OS allows you to use multiple audio devices at once and use them as-if they were a single device. Through a process called Aggregation, inputs and outputs of the separate devices are combined and can be used simultaneously.  For example, you can aggregate 2 ONE’s, effectively creating a device with 4 output channels.

Apogee supports device aggregation for a maximum of 2 devices only on Mac OSX 10.7 (Lion) or greater.

 

Apogee devices that support Aggregation:

  • Duet 2
  • Quartet
  • GiO
  • JAM
  • MiC
  • ONE

 

To create an aggregate device and use multiple interfaces simultaneously:

  • Open Audio Midi Setup (Located in Applications/Utilities/ on your Mac)
  • Click the + from the button left of the window
  • Select “Create Aggregate device”
  • Double-click the newly created device’s name “Aggregate Device” and rename it if desired
  • In the right side of the window, select the devices you wish to aggregate. For example ONE, Built-in Input, Built-in Output.
  • For best results, be sure Apogee device is selected as the Master Clock
  • In your recording application, select the device name you’ve just created.
  • To select this device to be your default for Mac sound, Right click (or control click) the device in Audio MIDI Setup and select “Use this device for sound input/output”
  • Select the Output speaker channels by clicking “Configure Speakers”, selecting the stereo tab and assigning destinations for left and right channels
  • Select “Done” button and you’re all set.

 

 

 

Can you run Apogee products on a Mac that is booted from OSX on an external hard drive?

Yes, your Apogee interface will work on a Mac booted from OSX on an external hard drive.  Please note the following requirements:

  • OSX version must be noted as compatible with the Apogee product on our website
  • The external hard drive must be formatted as Mac OS Extended (Journaled)
  • External hard drive must be partitioned as a GUID partition table for booting Intel Macs