User manual M-AUDIO PROFIRE 2626

[. . . ] Some vintage ribbon microphones may be damaged if phantom power is applied to them. Always consult your microphone's manual before applying phantom power. 7 6 7 8 Headphone Jacks: Connect headphones to these jacks The first headphone output is sourced from audio routed to analog outputs 1/2 while the second headphone output is sourced from audio routed to analog outputs 3/4 Master Volume Knob: This knob controls the analog output levels of ProFire 2626 Turning the knob clockwise will increase the output level while turning it counterclockwise will reduce the output level By default, this knob is assigned to control analog outputs 1/2, however, the Control Panel application provides the option of setting the Master Volume knob to control any combination of analog output pairs (i e , 1/2, 3/4, 5/6, or 7/8) This includes the ability to control the level of all eight analog outputs simultaneously This feature has been implemented to facilitate many kinds of stereo and surround mixing scenarios See the Control Panel section of this User Guide for more information about how to configure and use the Master Volume knob HINT: To control the level of the main monitor mix without affecting the level at the headphone outputs, assign the Master Volume knob to either analog outputs 5/6 or 7/8 and use those outputs for your main monitors. This prevents the Master Volume Knob from influencing the levels of headphone outputs 1 and 2 and effectively provides front panel volume controls for three unique stereo outputs. If you already have a way of controlling the main monitor mix level (e. g. [. . . ] When the interface operates at higher sample rates (i. e. , 88. 2/96 kHz or 176. 4/192 kHz), certain hardware input and output ports become disabled due to the design of the S/MUX II and S/MUX IV protocols. When this happens, the Control Panel automatically scales back the number of software return channels to match the number of hardware outputs. Additionally, you can choose to disable unused hardware input ports and/or software return channels to minimize the amount of system resources used by ProFire 2626. Both of these occurrences may result in Router output sources appearing grayed-out and italicized. 20 In the drop-down menu, the analog, ADAT, and S/PDIF inputs correspond to the analog, ADAT and S/PDIF hardware inputs found on the interface The "SW Return" selections correspond to the outputs of your audio software, while the "Aux Send" selections correspond to the stereo Auxiliary Send outputs of the DSP Mixer described in the previous section "Mixer Out" is the master output of the ProFire 2626 DSP Mixer Note that if any of the drop-down selections appear grayed-out and italicized, this means that the stream is inactive (see the "Why are hardware inputs and outputs disabled?" box on this page for additional information) Select a stream that is not italicized or grayed-out from the drop down menu to route an active stream to your chosen output Active Input Ports These checkboxes determine which groups of hardware inputs are currently active on the interface If a box is checked, its corresponding inputs are active; if a box is left unchecked, the corresponding ports are not active and the audio software will not receive any signal from this input until it is made active again Be sure to deactivate any ports that are not being used as this will reduce the demands placed on the FireWire bus and decrease the amount of system resources used by ProFire 2626 Deactivated inputs and outputs will be grayed-out and italicized in the Control Panel Note that at least one group of inputs must be active; the Control Panel will not allow you to disable any more than three of the four available check boxes Windows users: Note that inputs and outputs will always appear in your audio software, regardless of how these checkboxes are set However, signals associated with deactivated ports will not be received by the software NOTE: Audio signals received at disabled input ports are not transmitted to the computer through the FireWire cable. However, signals present at the hardware inputs are always audible through the DSP Mixer/Router even if its corresponding ports have been disabled in the Router. Furthermore, the interface can still receive digital clocking information through the S/PDIF or ADAT ports even if they have been disabled from this menu. ProFire 2626 Active Software Returns ProFire 2626 allows for a maximum of 26 software returns The Control Panel software allows you to reduce the number of software returns in order to minimize the demands placed on the FireWire bus and decrease the amount of system resources used by ProFire 2626 Due to slight differences between how the Windows and Macintosh platforms handle audio, this parameter appears differently in the Control Panel and is described separately below for each operating system: Windows: Software returns can be activated/ deactivated in banks Check a bank to activate its corresponding software returns or uncheck a box to deactivate the software returns Macintosh: The ProFire 2626 Control Panel for Mac OS X has a drop-down menu showing the maximum number of software return channels This menu allows software return channels to be increased/decreased in pairs Why are Software Returns disabled? User Guide 21 Software returns may automatically become disabled when using ProFire 2626 at higher sample rates. Please refer to the "Architecture of ProFire 2626" section of this User Guide to learn more about this. Windows Users: Software return channels always appear in your audio application even if they have been disabled. However, if your audio application's outputs are routed to disabled channels, these software outputs will not be played out of the interface's hardware output ports. If you have recently changed the sample rate of the interface and some of the outputs cease to play back, open the Router tab in the Control Panel and observe the Output Source Routing section: All disabled software returns will appear grayed-out and italicized. Make sure that your audio application's outputs are not routed to any of these disabled software returns. Input Channel Order This section determines the order of the input ports as they appear in your audio software application Groups of ports can be dragged and arranged in a left-to-right order (the left-most item appears first in the software's hardware input list while the right-most item appears at the end) For example, if you would prefer the coaxial S/PDIF ports to appear as the first entries in your audio application's list of inputs and outputs, drag the "S/PDIF COAX" icon to the left-most section of the Control Panel CAUTION: Do not change the input channel ordering while your audio application is open. This may result in unexpected performance from your computer hardware and/or audio software. Once a change is made to this parameter, you may need to "refresh" or "update" your audio application's input routing page to see the updated ordering. Refer to your audio application's documentation to learn more about this. NOTE: Changing the channel order in the ProFire 2626 Control Panel may require you to update the input routing settings within your audio application. ProFire 2626 Settings User Guide 22 The Settings tab contains several parameters that govern the operation of ProFire 2626 These options are grouped in the following categories: Windows only: Buffer Size drop-down menu. ProFire 2626 User Guide 23 Hosted Mode The parameters in this section of the Control Panel govern the operation of the interface when it is connected to a computer using a FireWire cable (i e , Hosted Mode) Sync Source This drop-down menu determines the clock source to which ProFire 2626 is synchronized If you are using ProFire 2626 by itself (i e , without other digital devices or an external clock), this parameter must be set to "Internal" for the interface to work properly If you have connected a S/PDIF, ADAT, or Word Clock device to your ProFire 2626 and would like to use that device's clock as the master clock source, select "ADAT A, " "ADAT B, " "Coax S/PDIF, " or "Word Clock" from this drop down menu This will make ProFire 2626 lock to the external device's clock About Clock: If you are using ProFire 2626 in conjunction with other digital devices in your studio, you will need to designate one device in your studio as the "clock master. " All other digital devices must be set to lock (or "slave") to the master device's clock. For example, if you have connected your ProFire 2626 and a DAT recorder using a pair of S/PDIF cables (i. e. , the S/PDIF output of ProFire 2626 has been connected to the S/PDIF input of the DAT recorder; the S/PDIF output of the DAT has been connected to the S/PDIF input on ProFire 2626), you must configure either ProFire 2626 or the DAT recorder to act as the clock master, while the other device must be set to "external" or "slave" mode. If your devices are not configured in this way, you may hear clicks, pops, and other unwanted glitches in your audio. If you wish to set ProFire 2626 as the master, set the "Sync Source" parameter in the Control Panel to "Internal. " If you would like ProFire 2626 to lock to another device connected using ADAT, S/PDIF, or Word Clock, select "ADAT A, " "ADAT B, " "Coax S/PDIF, " or "Word Clock" from the drop-down menu. In this scenario, you'll need to ensure that the external device is set as the clock master. Refer to the "Digital Clocking" section of this guide to learn more about clocking and to learn how to digitally synchronize multiple digital devices to one clock. ProFire 2626 Sample Rate User Guide 24 This drop-down menu sets the sample rate of ProFire 2626 Note that when using the interface with an ASIO or CoreAudio application, the sample rate can also be determined by your audio application This parameter may not be editable from within the ProFire 2626 Control Panel if your audio application is running In this case, any changes to the sample rate must be made through the audio application itself If the application does not provide a way to set the sample rate, quit the application, then change the sample rate through the ProFire 2626 Control Panel Attention Vista Users: When using the ProFire 2626 WDM/MME (i. e. , non-ASIO) drivers, the sample rate of the interface (and your audio software) is always determined by this drop-down menu. Your selection in this menu is the only item that will appear in your audio application. For example, if you select "44. 1kHz" in this menu, your audio application's control panel will only display "44. 1kHz" and you will not be able to select any other rates from within the application. When the sample rate is locked to an external digital clock source, the Power Indicator LED (10) remains continuously illuminated; when the sample rate is unlocked, the Power Indicator LED (10) blinks and a warning message appears in a red rectangle just below the Sample Rate menu Buffer Size (Windows only) This menu sets the size of the input and output buffers on ProFire 2626 Windows only: Buffer Size drop-down menu. Buffers are used to help keep audio hardware and software running smoothly by processing audio in groups of samples rather than one sample at a time Due to variations between computer hardware and software, it is impossible to recommend a single optimum setting for all systems It may be necessary to experiment with various settings until you find the best buffer size for your system The goal of setting a buffer size is to reduce it as much as possible without hearing any clicks, pops, or other glitches If the buffer size is too small, the computer will not be able to make all the required audio calculations on time and you will hear pops, clicks, and stuttering in your audio streams On the other hand, if the buffer size is set too high, your computer will process audio without incident, but your software will feel sluggish and unresponsive To find your system's optimum buffer size setting, begin with a high setting and gradually reduce the size until you begin to hear clicks, pops, or other audible glitches in your audio Then, raise the buffer size setting until these glitches disappear You may need to stop playing audio any time you change this setting and certain applications will require you to re-launch the program before the new buffer size settings become active NOTE: This menu only appears on Windows systems. [. . . ] This routine attempts to determine the optimum settings for the new interface's WDM driver. While ProFire 2626 does include a WDM driver, it is recommended that the ASIO driver is used instead to ensure best performance. If this profiling prompt appears, go to your application's control panel and make sure that the "M-Audio ProFire ASIO" driver is selected as the audio device driver. Be sure to check your microphone's documentation before engaging phantom power. Possible cause 4: Improper digital clocking If you are using ProFire 2626 without an external clock master, be sure that the Sync Source parameter to "Internal " If you are using external digital devices, please see the "Digital Clocking" section of this guide to learn how to properly configure digitally interconnected equipment in your studio ProFire 2626 User Guide 48 Problem: Windows users experience high latency and limited performance when using Steinberg Nuendo or Cubase SX. [. . . ]