Technical information, 1 troubleshooting – PreSonus FireStudio Project User Manual
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TECHNICAL INFORMATION
36 | PreSonus 2009
5.1 TROUBLESHOOTING
Many technical issues can arise when converting a standard computer into a digital audio workstation (DAW). 
PreSonus can only provide support for issues that directly relate to the FireStudio Project interface and Studio 
One Artist software. It may be necessary to contact the manufacturer of the computer, operating system, and 
third-party DAW software to obtain additional technical support. PreSonus does not provide support for issues 
regarding operating systems, additional hardware, or non-PreSonus software. Please check our Web site, 
www.presonus.com
, regularly for software information and updates, firmware updates, and technical support.
You also can get technical assistance by calling PreSonus at 225-216-7887 Monday through Friday between the 
hours of 9 a.m. and 6 p.m. Central Time. PreSonus Technical Support can also be contacted during the same 
hours via email at [email protected]. 
 
Pops and Clicks
Pops and clicks in either your input or playback audio are typically caused by momentary losses of 
synchronization between the FireStudio Project and its clock source. This can be due to a FireWire card that is 
not suited for FireWire audio devices or to a lack of CPU power or available memory. Try closing all 
unnecessary programs, increasing the buffer size in the Universal Control, and optimizing your operating system 
for audio. 
 
Pops and clicks exclusive to the digital inputs or outputs are typically caused when the FireStudio Project is not 
digitally synced to the external digital device. If this is the case, ensure your FireStudio Project and external 
digital device are properly synced. 
Please consult your external device’s user manual for details on syncing it to
your FireStudio Project.
Flashing Sync Light 
The FireStudio Project’s Sync light flashes red and blue when it is not synced. Check the FireWire cable to 
ensure that it hasn’t become disconnected. If you are using an external digital device, and your Clock Source is 
set to the correct digital input, set the sample rate in the Universal Control to the same sample rate as that of 
your master clock. If you are not using an external device to generate word clock, open the Universal Control 
and set the Clock Source to “Internal.” 
 
Audio Dropouts
Audio dropouts can occur when the speed of your processor cannot buffer audio fast enough. Increase your 
buffer size in the Universal Control and try the different Operation Modes on the Hardware Settings tab. 
No Input Signal on Channels 1-8
1. Check your mic cable. In order to access the microphone preamp, you must use an XLR cable. The TRS
connection in the combo jacks for inputs 3-8 bypass the microphone preamp entirely. 
 
2. Make sure the microphone does not require phantom power. If it does, press the 48V button.
Note:
Engaging phantom power will place +48V on channels 1-4. Ensure nothing will be damaged by 
phantom power being present on the adjacent channel.
3. If there is no signal on Channel 1 or 2, make sure nothing is plugged into the line input on the rear of
the FireStudio. The return inputs on channels 1 and 2 take precedence over the combo input on the 
front of the unit for channels 1 and 2. If a cable is plugged into the return input on channel 1, then the 
mic/instrument input on channel one will be inactive until the cable is removed from return input 1