RME HDSPe MADI [30/72] Mac os x faq

User's Guide HDSPe MADI © RME

19. Mac OS X FAQ

19.1 Round about Driver Installation

The driver with the file suffix zip provided by RME is a compressed archive. Zip is directly sup-

ported by OS X, a double click on the file is all one needs to do.

The driver consists of a package file (pkg). A double click will start the OS X installer.

The actual audio driver appears as a kernel extension file. The installer copies it to >System/

Library/ Extensions<. Its name is HDSPMADI.kext. It is visible in the Finder, allowing you to

verify date and driver version. Yet, in fact this again is a folder containing subdirectories and

files.

Nonetheless, this 'driver file' can be removed by simply dragging it to the trash bin. This can be

helpful in case a driver installation fails.

19.2 MIDI doesn't work

In some cases the applications do not show the MIDI port. The reason for this is usually visible

within the Audio MIDI Setup. It displays no RME MIDI device, or the device is greyed out and

therefore inactive. Mostly, removing the greyed out device and searching for MIDI devices again

will solve the problem.

The HDSP MIDI driver is a plugin. During installation it will be copied to >Library/ Audio/ MIDI

Drivers<. Its name is HDSP MADI MIDI.plugin. The file can be displayed in the Finder and

also be removed by simply dragging it to the trash bin.

19.3 Supported Sample Rates

RME's Mac OS X driver supports all sampling frequencies provided by the hardware. This in-

cludes 32 kHz and 64 kHz, and even 128 kHz, 176.4 kHz and 192 kHz.

But not any software will support all the hardware's sample rates. The hardware's capabilities

can easily be verified in the Audio MIDI Setup. Select Audio devices under Properties of:

and choose the Hammerfall. A click on Format will list the supported sample frequencies.

19.4 Repairing Disk Permissions

Repairing permission can solve problems with the installation process - plus many others. To do

this, launch Disk Utility located in Utilities. Select your system drive in the drive/volume list to

the left. The First Aid tab to the right now allows you to check and repair disk permissions.