User manual M-AUDIO QUATTRO

[. . . ] . 28 1 Introduction Thank you for purchasing the USB Audio Quattro USB Audio Interface, designed and manufactured by M-Audio. The Quattro provides four audio inputs and four audio outputs, plus a 1x1 MIDI port on your USB equipped PC or Macintosh computer. High performance, 24-bit/96kHz audio is now possible in a compact, portable package. All audio inputs and outputs are switch-able between balanced (+4dBu) and unbalanced (-10dBV) operation to accommodate any audio need. [. . . ] Please refer to the Macintosh installation procedure earlier in the manual for information on configuring the Quattro MIDI driver in OMS. Open that page, and click on the USB Audio Quattro "MIDI In" and "MIDI Out" devices to select and enable them. On the Macintosh, if OMS is configured properly, you will be able to select OMS for MIDI input and output. As stated, the Quattro can be your only MIDI device, or it can be used in conjunction with as many other MIDI devices in your system as your music program allows. Your music software should allow you to arrange the MIDI ports in a numerical order, according to your preferences. The diagram below shows a typical MIDI setup involving the USB Audio Quattro. Shown here is a controller keyboard plugged into the Quattro's MIDI In port, and a sound module plugged into the Quattro's MIDI Out port. Sound Module MIDI 12 N I 13 recording source with reduced latency, while using the Windows Multimedia drivers introduces latency that is generally considered unacceptable. The Quattro's Direct Monitor option will allow you to monitor your recording source with zero latency. Direct monitoring with the Quattro is optimized when using a mixer to monitor all four of the Quattro outputs. Two outputs can be dedicated to direct monitoring, while the other two outputs can monitor the software, which is playing back the audio that you've already recorded. Plug Quattro outputs 1, 2, 3, & 4 into your mixer (let's assume, for this example, that you plug Quattro outputs 1, 2, 3, & 4 into your mixer's inputs 1, 2, 3, & 4). Press the "Direct Monitor" switch for inputs 1/2 on the Quattro front panel to the "In" position. In your music software, set each track to Quattro outputs 3/4 for audio playback. This way, you'll be monitoring your recorded tracks from Quattro Outs 3/4. Use the meters in your music program to set the record levels for the signal present at Quattro inputs 1 & 2. Adjust your monitoring (listening) level for Quattro inputs 1 & 2 on the mixer channels 1 & 2. Add effects if you wish, as these will not affect the signal being recorded. Playing back the recorded tracks in your music software, rehearse the parts to-be-recorded and fine-tune the record levels. Adjust the levels on your mixer for a blend of the Direct Monitor signal on 1 & 2 and the recorded tracks on 3 & 4. Enable or "Arm" the track for recording, and begin recording audio. 2. 4. Using the Input and Output Level Switches Using the front panel Input Level and Output Level switches, you may change the operating line level for each of the Quattro stereo pairs. In the "out" position, the Quattro is set to a +4dBu line level. [. . . ] Check your USB connections, and make sure that the Quattro is powered up. Possible Cause1: On the PC, if you are using the ASIO drivers, and ASIO is selected in the USB Audio Configuration Manager, then you will not be able to hear you system sounds (using the MME drivers) if they are being directed to the Quattro. If you have another sound device in your system, you can go to Control Panel | Multimedia and select this other device. Then you will hear system sounds, provided you are monitoring the alternate sound device in some fashion. [. . . ]