If you connect two STUDIO-CAPTURE units to a computer, you’ll be able to use them as a 32-in/20-out audio interface. The following procedure will guide you through setting up two STUDIO-CAPTUREs to be used simultaneously with Mac OS X.

NOTE: 

• The STUDIO-CAPTURE driver must be installed prior to following the setup below. You may install the driver from the included setup disc or download the driver by clicking here.
• A maximum of two STUDIO-CAPTURE units can be synchronized.
• When using two units, they cannot be used with the 96 and 192 kHz setting.

Before you start making settings, disconnect both STUDIO-CAPTURE units from the computer and turn off their power.

1. Switch on the power to the second STUDIO-CAPTURE unit. The second STUDIO-CAPTURE unit will be the timing master.
2. Specify the sampling rate of your choice:
         a. Press the   knob to access the SYSTEM screen.
         b. Use the  buttons to choose “SAMPLE RATE.”
         c. Turn the  knob to change the sample rate to a desired setting.
   
   
3. Use the  buttons and  knob to make the following system settings:
   
   
4. Switch on the power to the first STUDIO-CAPTURE unit.
5. Set the first unit to the same sampling rate as the second unit and then make the following settings in the SYSTEM screen:
   
6. In order to digitally synchronize the two units, use a digital coaxial cable to connect the second unit’s COAXIAL OUT (9/10) to the first unit’s COAXIAL IN (15/16).
7. Connect the both STUDIO-CAPTURE units to the computer.
   NOTE: Connect the two USB cables to USB ports that are near each other.
8. Configure the STUDIO-CAPTURE in your computer:
   
   Make the following ”Mac OS X MIDI Settings” for the second STUDIO-CAPTURE unit:
       a. In the Mac OS X Finder, open the [Applications] folder and then the [Utilities] folder.
       b. Double-click [Audio MIDI Setup].
       c. Click [Show MIDI Window] in the [Window] menu to display the “MIDI Studio” window.
       d. Confirm that [STUDIO-CAPTURE] appears in the “MIDI Studio” window .
       If [STUDIO-CAPTURE] does not appear or if it is grayed out, click the [Rescan MIDI] icon. You may also try turning the STUDIO-CAPTURE off and then on again.
   
   

9. Make the following ”Mac OS X MIDI Settings”:
   
   STUDIO-CAPTURE (First Unit)

   1. In the Mac OS X Finder, open the [Applications] folder, then the [Utilities] folder and then double-click [Audio MIDI Setup].
   2. Click [Show MIDI Window] in the [Window] menu to display the “MIDI Studio” window.
   3. Confirm that [STUDIO-CAPTURE] appears in the “MIDI Studio” window.
      Note: If [STUDIO-CAPTURE] does not appear or if it is grayed out, click the [Rescan MIDI] icon. You may also try turning the STUDIO-CAPTURE off and then on again.
   4. Click the [Add Device] icon once. One [new external device] icon will appear.
   5. Click on the added [new external device] icon and then click the [Show Info] icon.
   6. Enter “STUDIO-CAPTURE” in the [Device Name] field and then click the [Apply] button.
   7. Using your mouse, drag and connect the buttons (which represent the input/output ports of each device) of the existing [STUDIO-CAPTURE] and the newly added [STUDIO-CAPTURE] so that they are connected as shown in the figure.

   

   STUDIO-CAPTURE (Second Unit)

   9. In the Audio MIDI Setup window, click the [Add Device] icon once. One [new external device] icon will appear.
   10. Click on the added [new external device] icon and then click the [Show Info] icon.
   11. Enter “STUDIO-CAPTURE EXP” in the [Device Name] field and then click the [Apply] button.
   12. Using your mouse, drag and connect the   buttons of the existing [STUDIO-CAPTURE EXP] and the newly added [STUDIO-CAPTURE EXP].
   
   Creating an Aggregate Device
   
   1. In the Mac OS X Finder, open the [Applications] folder, then the [Utilities] folder, and then double-click [Audio MIDI Setup].
   2. Click the [+] button and click “Create an Aggregate Device.” “Aggregate Device” will appear in the list.
   3. Double-click on “Aggregate Device” and then change the device set name to “STUDIO-CAPTURES.”
   4. From the audio devices at the right, add a check mark to “Use” for “STUDIO-CAPTURE” and then for “STUDIO-CAPTURE EXP.”
   5. In the clock source field, choose “STUDIO-CAPTURE EXP.”
   6. If a check mark has been placed in the Resample field or the Drift Connection field, clear the check mark.
10. Connect your headphones to the PHONES jack of the first STUDIO-CAPTURE unit. The number of audio ports will increase, allowing you to record and play back using 32-in/20-out.