Recently purchased an Apogee Duet and Logic Express 8. Love it so far but there's a cracking noise coming out of the Yamaha monitors when I turn on the external HD via FW800. The Duet is connected via FW400. It'll be nice to solve this issue. The digital/cracking noise is annoying. It's almost unworkable. Additionally, I use the external FW800 as my recording drive so it's a crucial. Besides this, the Duet sounds awesome w/out FW800 HD plugged in. Thanks, mT.