Re: [LAU] Focusrite Scarlett 18i8

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To: Fons Adriaensen <fons@...>
Cc: Linux Audio Users <linux-audio-user@...>
Date: Wednesday, January 8, 2014 - 2:52 pm

On 01/08/2014 02:41 PM, Fons Adriaensen wrote:

I had calibrated -18dBFS on all of them to the same source (a 1KHz sine,
which I believe to be 0 dBu). That's how I found out about the rubber
controls effect in the first place.

I also did two another measurements, setting the gain-dial of each
devices at minimum and maximum. The 18i6 still came out worst.. but that
is not too unexpected. The gain range of the 18i6 is about -10dB ..
+30dB (per specs it should be -10..+36), while on the other two it's
-20dB .. +20dB.

I also have one of them each. So maybe I was unlucky to get a bad/good
device. I also did not have access to pro-equiment to calibrate &
measure them, but identical equipment was used to evaluate all.

>> That make we wonder which award those 'award winning' preamps of

right. They don't need to be exact to the degree but at least give an
indication. "About +5dB" is more useful that just a number, IMHO.

> I'm enquiring about this for a friend who needs an USB card to be

The form-factor of the 18i8 is probably a bonus in this case.

Skimming over http://wiki.linuxaudio.org/wiki/hardware_support
the only comparable device would be the Alesis iO4 (unless you also
consider more expensive equipment with more than 4 inputs).

for environmental noise measurement, the devices do not need to be
sample-sync, do they? You could probably use two stereo USB1 devices.

best,
robin
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Messages in current thread:
[LAU] Focusrite Scarlett 18i8, Fons Adriaensen, (Tue Jan 7, 3:10 pm)
Re: [LAU] Focusrite Scarlett 18i8, Robin Gareus, (Wed Jan 8, 4:06 am)
Re: [LAU] Focusrite Scarlett 18i8, Fons Adriaensen, (Wed Jan 8, 1:41 pm)
Re: [LAU] Focusrite Scarlett 18i8, Robin Gareus, (Wed Jan 8, 2:52 pm)
Re: [LAU] Focusrite Scarlett 18i8, Fons Adriaensen, (Wed Jan 8, 3:43 pm)
Re: [LAU] Focusrite Scarlett 18i8, Robin Gareus, (Wed Jan 8, 4:04 pm)
Re: [LAU] Focusrite Scarlett 18i8, Fons Adriaensen, (Wed Jan 8, 10:21 pm)
Re: [LAU] Focusrite Scarlett 18i8, Fons Adriaensen, (Wed Jan 8, 4:24 pm)
Re: [LAU] Focusrite Scarlett 18i8, Jeremy Jongepier, (Wed Jan 8, 8:40 am)
Re: [LAU] Focusrite Scarlett 18i8, James Stone, (Fri Jan 10, 8:42 pm)
Re: [LAU] Focusrite Scarlett 18i8, Fons Adriaensen, (Fri Jan 10, 10:20 pm)
Re: [LAU] Focusrite Scarlett 18i8, James Stone, (Fri Jan 10, 10:48 pm)
Re: [LAU] Focusrite Scarlett 18i8, Fons Adriaensen, (Fri Jan 10, 11:20 pm)
Re: [LAU] Focusrite Scarlett 18i8, James Stone, (Sat Jan 11, 10:20 am)
Re: [LAU] Focusrite Scarlett 18i8, Tim Goetze, (Wed Jan 8, 9:37 am)
Re: [LAU] Focusrite Scarlett 18i8, James Stone, (Thu Jan 9, 9:23 pm)
Re: [LAU] Focusrite 2i4, Tim Goetze, (Fri Jan 10, 10:33 am)
Re: [LAU] Focusrite 2i4, James Stone, (Fri Jan 10, 10:40 am)
Re: [LAU] Focusrite 2i4, Tim Goetze, (Mon Jan 27, 2:34 pm)
Re: [LAU] Focusrite 2i4, James Stone, (Mon Jan 27, 2:44 pm)
Re: [LAU] Focusrite 2i4, Tim Goetze, (Fri Jan 10, 11:33 am)
Re: [LAU] Focusrite 2i4, Kees van Veen, (Fri Jan 10, 4:30 pm)
Re: [LAU] Focusrite 2i4, Tim Goetze, (Mon Jan 13, 8:58 am)
Re: [LAU] Focusrite 2i4, James Stone, (Mon Jan 13, 10:49 am)
Re: [LAU] Focusrite 2i4, Tim Goetze, (Mon Jan 13, 12:25 pm)
Re: [LAU] Focusrite 2i4, James Stone, (Sat Jan 11, 7:52 pm)
Re: [LAU] Focusrite 2i4, Jeremy Jongepier, (Sat Jan 11, 10:22 pm)
Re: [LAU] Focusrite 2i4, Kees van Veen, (Sun Jan 12, 9:19 pm)
Re: [LAU] Focusrite Scarlett 18i8, James Stone, (Wed Jan 8, 10:55 am)
Re: [LAU] Focusrite 2i4, Tim Goetze, (Wed Jan 8, 12:07 pm)