Firewire Bus Power

[Erik Korte[_2_]]

Hi.

I've been using my Echo AudioFire12 for years with my Mac Pro, but now
I'm using it in the field with my MacBook (no-pro).

The AF 12 is (AC) self powered yet the MacBook automatically sends it
bus power, thusly running hotter and the fan never stops.

If I plug in a 6 pin FW cable to the MacBook and leave the other end
un-attached the fan never turns on. When I plug in the AF 12, the fan
starts up (within a few minutes).

It there an adapter cable or a mod that can be done to the AF12 so it
doesn't "ask" for bus power? Or is there a way to disable Firewire bus
power on the Mac (10.6.5)

Any suggestions?



Thanks!
Erik

[Mike Clayton]

Erik Korte wrote:
> Hi.
>
> I've been using my Echo AudioFire12 for years with my Mac Pro, but now
> I'm using it in the field with my MacBook (no-pro).
>
> The AF 12 is (AC) self powered yet the MacBook automatically sends it
> bus power, thusly running hotter and the fan never stops.
>
> If I plug in a 6 pin FW cable to the MacBook and leave the other end
> un-attached the fan never turns on. When I plug in the AF 12, the fan
> starts up (within a few minutes).
>
> It there an adapter cable or a mod that can be done to the AF12 so it
> doesn't "ask" for bus power? Or is there a way to disable Firewire bus
> power on the Mac (10.6.5)
>
> Any suggestions?
>
>
>
> Thanks!
> Erik

Firewire cables that don't pass bus power are freely available. A Google
search will find you local suppliers.

Mike

[cedricl[_2_]]

On Dec 1, 4:08*pm, "Soundhaspriority" > wrote:
> "Erik Korte" > wrote in message
>
> ...
>
>
>
>
>
> > Hi.
>
> > I've been using my Echo AudioFire12 for years with my Mac Pro, but now
> > I'm using it in the field with my MacBook (no-pro).
>
> > The AF 12 is (AC) self powered yet the MacBook automatically sends it
> > bus power, thusly running hotter and the fan never stops.
>
> > If I plug in a 6 pin FW cable to the MacBook and leave the other end
> > un-attached the fan never turns on. When I plug in the AF 12, the fan
> > starts up (within a few minutes).
>
> > It there an adapter cable or a mod that can be done to the AF12 so it
> > doesn't "ask" for bus power? Or is there a way to disable Firewire bus
> > power on the Mac (10.6.5)
>
> > Any suggestions?
>
> > Thanks!
> > Erik
>
> See thishttp://www.mlancentral.com/forums/showflat.php?Cat=6&Board=mLAN&Numbe...
>
> There is/was actually an inline adapter that does what you want, but I could
> not spot it in a casual search.
>
> Bob Morein
> (310) 237-6511

Found it. Bus power isolator.
<http://www.usbfirewire.com/Parts/rr-cfe-66-np06.html>

[Erik Korte[_2_]]

On Dec 2, 1:58*am, cedricl > wrote:
> On Dec 1, 4:08*pm, "Soundhaspriority" > wrote:
>
>
>
>
>
>
>
>
>
> > "Erik Korte" > wrote in message
>
> ....
>
> > > Hi.
>
> > > I've been using my Echo AudioFire12 for years with my Mac Pro, but now
> > > I'm using it in the field with my MacBook (no-pro).
>
> > > The AF 12 is (AC) self powered yet the MacBook automatically sends it
> > > bus power, thusly running hotter and the fan never stops.
>
> > > If I plug in a 6 pin FW cable to the MacBook and leave the other end
> > > un-attached the fan never turns on. When I plug in the AF 12, the fan
> > > starts up (within a few minutes).
>
> > > It there an adapter cable or a mod that can be done to the AF12 so it
> > > doesn't "ask" for bus power? Or is there a way to disable Firewire bus
> > > power on the Mac (10.6.5)
>
> > > Any suggestions?
>
> > > Thanks!
> > > Erik
>
> > See thishttp://www.mlancentral.com/forums/showflat.php?Cat=6&Board=mLAN&Numbe...
>
> > There is/was actually an inline adapter that does what you want, but I could
> > not spot it in a casual search.
>
> > Bob Morein
> > (310) 237-6511
>
> Found it. Bus power isolator.
> <http://www.usbfirewire.com/Parts/rr-cfe-66-np06.html>


Hey....

Thanks. I wonder if this would be that different from using a 6 pin -
4 pin cable with a 4 - 6 adapter on the end?
Or am I over simplifying it some?