Edirol FA-66 Sound Card Logo

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Posted on Mar 09, 2010
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My FA-66 is connected to my MacBook Pro via Firewire. When I plug a secondary display in, it makes lots of extraneous noise, even worse if the PSU is not connected to the MacBook Pro. What is causing this?

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  • Expert 218 Answers
  • Posted on Mar 09, 2010
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Joined: Apr 09, 2009
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Is the noise a constant hum? If it is such a noise, I suspect a faulty or poor performing power supply. Check the power supply that powers Edirol sound card for any improper ground. Another custom made power supply which is properly regulated (voltage) and at a higher ampere rate would be an idea to consider. I think your main issue is grounding because you say the case become worse when the MacBook PSU is not there. Because, you are loosing a ground path when you remove the PSU. Then it solely depends on the Edirol ground path. If that path not a good source of ground, there lies your problem.

  • Anonymous Mar 09, 2010

    Is the noise a constant hum? If it is such a noise, I suspect a faulty or poor performing power supply. Check the power supply that powers Edirol sound card for any improper ground. Another custom made power supply which is properly regulated (voltage) and at a higher ampere rate would be an idea to consider. I think your main issue is grounding because you say the case become worse when the MacBook PSU is not there. Because, you are loosing a ground path when you remove the PSU. Then it solely depends on the Edirol ground path. If that path not a good source of ground, there lies your problem.

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Edirol fa-66

1.i gained info about the mains supply data (9 volts 2 a, minus pole in the center pole of the plug) which is a quite exotic supply in comparison to standard devices with 12 volts an plus pole in the center pole ...
the fa 66 didn't work , when connected by 4 to 4 or 4 to 6 firewire cable .
my laptop only has a small 4 pole socket.
therefore i suppose that through this 4-pole socket and cable there was no current lead through.

after additionally connecting the fa-66 with mains supply AND 4 to 6 (fa 66 side) cable ... it finally worked.
the manufacturer should print all relevant data directly to the fa 66 device near by the socket und also print "FA-66" onto the supply ... because i own lots of alike-looking supplys and it's a drag to find out which ist good for what...
;-)


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u can buy a pcmcia card with 6pin firewire connections and usa a 6 to 6 firewire cable
and that will work. i hope. :)


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Lots of noise when laptop power cord is plugged in

You must be running on pc, or it sounds like you may have a ground loop issue. If you are running a mac, then bus power over the firewire should be enough. If your running on a pc, try getting a pcmcia card with 6 pin firewire ports. If not then your pc laptop will have to power the 410 via ac adapter. That means both should be plugged in tot he wall. Ive gotten that interference before, and gett it on any audio, whether im producing or playing itunes. I find the trick is to reset the 410 via the output window in the top right. It's right above the level knob. Also, try just installing the latest driver, with the 410 disconnected, then launch it from a different file path than the icon.

I still use it for the macbook pro, and its not always top notch. I bought it 3 years ago for 500, and i see what 500 buys nowadays.......MOTU!!!!

Keep me posted.
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