sebby2000

Hi Skelter, I tried the MOTU powering according 2 ways: auto powered by Mac mini and power by AC power supply => problem is the same ! Some speak about firewire cable quality, I didn't use a "no name" but I can't guarantee it's a high quality cable. No problem with USB but not really happy if Apple sell mac mini incompatible with firewire characteristics

Concerning the FireWire cable, i didn't used the cable supplied with the motu because It is FireWire 400 and not compatible with my Mac. I bought a 400 / 800 cable but don't Know the quality of it. What is the best choice if i want use firewire link ? - use motu cable plus adapter 400 / 800 - use a new 400 / 800 cable Regards Sebby

Hi jordito, Your question is good because, few minutes ago I tried the USB connection with my MAC mini and it seams the problem dissapear !! I don't understand, bad firewire cables ??????? I bought a Mac Mini 2011 6 months ago to make music instead of Windows and buy the soundcard MOTU ultralite hybrid to have the system with the less problems (MAC + FIREWIRE + LOGIC) and take my time to make music (instead of driver debugging!!) and the result is a bit disappointing because I have to switch to USB to have stability what is the real problem ?

HI, I tried with DC power supply instead of auto powered byFIREWIRE => problem is alway present, glitches !!!

Hi, I tried the factory reset, it didn't resolve my problem .

I'm gonna try this asap !!

Thank's for the procedure but I don't understand why a factory default setting can solve my problem ........

Motu reset, what is the procedure ? Any other idea ? I think i didn't have this problem under window XP.....

When you say The clock source should be the Motu, does this mean clock source must be internal ?

Before to change my configuration from Firewire to USB, I do some additional tests changing the clock source parameter. (I Playback Apple Loop in logic Pro directly from the media navigator) Clock source : internal sample rate : 44.1/48 => glitches Clock source : SMPTE When I change the clock source to SMPTE, the AppleLoop Playback works correctly without glitches. The main problem is the logic sequencer which is completely desynchronized, my current project can playback (position of measure in transport panel is hazardous). Clock source : Built-In Input / AUDIO IPC Playback is OK Sequencer is OK What is the clock source you have to used with a Mac + MOTU + external Synth (recorded in Midi and Audio) ?

My motu is autopowered by FireWire, I Will try with USB cable as soon as possible.

Yes I do it today, problem is the same ;(

Someone can help me ?

Hi all, I'm a new member because I recently buy a MMS 2011 + Logic pro 9 on the Mac App Store Meanwhile I have a little problem with my MOTU board. When I'm playing music on Logic pro or playback a mp3 song with my motu Ultralite mk3 hybrid I listen glitches on main audio output. I always listen the music but artefact are superposed on audio. Theses glitchs are random and can be present upto once by second. I tried to change the buffer size of logic but it has no effect. Anyway the problem is present playing a video on YouTube , it's not a problem with Logic. Configuration - I use Mac os x Lion server. - Ultralite is auto-powered by the mac Mini (FW 400 => FW 800 cable) I'm searching on all forum since many days and have no answer to my problem. Have you idea ? Regards Sebby2000