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Fwd: New Mackie Pro FX8 usb



Luis, didn't someone already ask you today to adjust your email
client? I didn't double and my list reply went to your private address
;-))  That's why I'm forwarding this to the list.


---------- Forwarded message ----------
From: Per Boysen <perboysen@gmail.com>
Date: Sun, Nov 9, 2008 at 10:01 PM
Subject: Re: New Mackie Pro FX8 usb
To: labaloops@yahoo.com


On Sun, Nov 9, 2008 at 8:00 PM, L.Angulo <labaloops@yahoo.com> wrote:
> Hi gang,
> ive been checking out this new compact mixer
> http://www.mackie.com/products/profx8/
> i am wondering if i could use it straight with mobius without having a 
>soundcard in between by simply going USB,how would this differ from a 
>firewire card like the presonus firebox in terms of latency? any 
>experiences outhere?
> cheers
> Luis


I have no experience with this particular piece of gear, since it's
new on the market, but well some experience with reading product
presentations ;-))  The question is how well you can specify on the
mixer what tracks to send into the computer and what tracks to send
directly to the PA. If this option exists you don't really have to
think about latency because you can simply not send your latency
vulnerable direct live signal through the whole computer. Rather send
it directly out to house PA and snag an effect send bus to go into the
computer (with Mobius in your case). Set Mobius to "not monitor
input", since you're already monitoring input on the mixer. This means
only looped audio will circulate inside Mobius and then Mobius latency
compensation will take care of that for you.

Well, ok.... the text did not tell about this, although saying twice
that "the full mix" can be sent into a computer. However, it says that
at the same time a dedicated stream from the computer can go back into
the mixer. At least this means that it's talking both ways through the
USB port. So, I will have to spend another minute on this then...
let's see (donwloading the PDF manual).... Here! The PDF manual says:


5. USB PORT
The USB serial I/O interface allows you to transfer
digital audio to and from your computer.
The interface provides two audio outputs to your
computer:
• Main mix output, left and right. These output
signals are independent of any adjustments
made to the main fader [48] and graphic EQ
[37]. This allows you to easily record your live
performance directly to your laptop.
• The USB thru switch [41] allows you to also
include the output from your computer in your
recording. See page 23 for more details of this
switch.
The USB interface also lets you use your computer to
playback two channels into the mixer:
• Left and right signals from your computer are
added to the main mix. The USB input level
control [40] allows you to adjust the level of
the incoming audio from your computer being
added to the main mix.
See Appendix D on page 32 for more USB details, and
also check out the block diagram on page 31. "

Well, that didn't answer the question, so let's go to page 32 then,
where we find these good news:

• Make sure that the DAW's input meters show
 2. Make sure the USB thru switch [41] is not
pressed in. This will ensure that during each
recording pass, the audio software only receives
the track-in-progress as an audio signal, and
not the pre-existing mix from the computer as
well.

So, this means that with that button [41] on the mixer not pressed in,
you may send your mixer input channel only to the mixer while
receiving back two channels (Mobius loops summed output) from the
laptop. I take it for understood that there is a way to balance the
monitoring of the input and the background and this monitor mix is
what you should send to the house PA when using this mixer as the
sound card for live looping (seems to be the headphones output).

I might be wrong, just scanning the manual on the fly here. Anyway,
try it before you buy it ;-)

--
Greetings from Sweden

Per Boysen
www.boysen.se (Swedish)
www.looproom.com (international)
www.myspace.com/perboysen
www.stockholm-athens.com



-- 
Greetings from Sweden

Per Boysen
www.boysen.se (Swedish)
www.looproom.com (international)
www.myspace.com/perboysen
www.stockholm-athens.com