If hum is intermittent and in both monitors and headset it's probably not a
ground issue. That would cause hum more consistently. This I think points to
preamp, interface, and cableing. Or possibly a mic going bad. Can you switch
out the condenser mic with another condenser mic to check hum. Also check it
using a good diaphragm mic to check hum as well.
If you can eliminate mics of all types and XLR cables then Phantom power supply
and or preamp interface is more than likely at fault. If all testing is
completed I would lean in the direction of phantom power supply.
Then again if the unit is out of warranty and you have a friend who knows
electronics. Unplug all connections so unit has no input, output or electric
power going to it. and Open the unit to see if there are any charred areas or
parts. Then if a part is burned beyond recognition check inside cover for a
schematic pasted to the inside. If not call the manufacturer and see if they
have customer support that could help.
I would contact the company to see what they might say before canning it.
Best of luck with this.
Andre
-----Original Message-----
From: ddots-l-bounce@xxxxxxxxxxxxx [mailto:ddots-l-bounce@xxxxxxxxxxxxx] On ;
Behalf Of Dave Hillebrandt
Sent: Friday, June 24, 2016 10:26 AM
To: ddots-l@xxxxxxxxxxxxx
Subject: [ddots-l] Re: Accessibility Review for Focusrite Scarlett 2i2 Second
Generation
The sound is definitely coming from both the headset and regular outputs. Tried
a couple cables with same problem so far. I could picture the fantom power
section being the problem but hoping not. These models are not very expensive,
but also may not be worth the bench fees if it is the unit itself.
Unfortunately it could also be in the computer and sure don't look forward to
setting everything back up again with sonar if thats the case. You got to do,
what ya got to do though. Thanks again for observations. Any tip could be one
I'm overlooking. Dave
On 6/24/2016 10:29 AM, Andre Jarreau wrote:
Sure Dave,
I think these signs are positive. If you jack into it with a guitar phantom
power is not used and may remain silent from hum. XLR cables could possibly
cause hum but my feeling is probably not the cable or connectors. Still
think trying different types of microphones, condenser/diaphragm, to see the
effect. Eliminate the possibilities and you are left with the truth so to
say.
Of course if the hum is only coming through the headset and not speakers then
an electrical fault could be in the headset to preamp circuitry. A
professional tech would have to look at this. Of course if new exchange it.
Or better yet bring the unit back to where you purchased it and ask why to
the headsets hum? If hum is known to exist they would know the fix. Just a
thought.
Andre
-----Original Message-----
From: ddots-l-bounce@xxxxxxxxxxxxx
[mailto:ddots-l-bounce@xxxxxxxxxxxxx] On Behalf Of Dave Hillebrandt
Sent: Friday, June 24, 2016 4:50 AM
To: ddots-l@xxxxxxxxxxxxx
Subject: [ddots-l] Re: Accessibility Review for Focusrite Scarlett 2i2
Second Generation
Andre, thanks for all the suggestions and will definitely try all of them. Am
thinking a good chance is the xlr cable so have a few to try.
Am definitely not hearing this sound when using line in from my guitar so now
am thinking either the mic or cable going in. I'm also trying all the
different usb ports in event that one works better over the others.
Thanks again, Dave
On 6/23/2016 11:28 PM, Andre Jarreau wrote:
Guys, some thoughts.PLEASE READ THIS FOOTER AT LEAST ONCE!
If you have a two pronged plug. Try pulling it out flipping it over and
plugging it back in. This reverses the chassy ground and might help.
Also try another microphone. The mic could be going bad. Switch to a
regular diaphragm mic that does not require phantom power. If hum goes away
then It's may be a bad mic or possibly phantom power circuitry related, or
both. Any circuitry should be looked at by a professional. Bring it to a
pro or exchange it if it's new.
Another thing you can try is simply clean the USB plug and port with
denatured alcohol and a cotton swab. Swab the port gently, you don't want
to leave any fibers behind. While USB plug is still damp with alcohol plug
in and out several times quickly to assist cleaning metal contact
connections.
Last; fingerprint oils and many contaminents human hands come in contact
with are transmitted to the USB plug and on to the port if you touch the
metal contacts of the USB plug at all with your bare hand. Never touch the
metal contacts!!!
Hope this helps.
Andre.
-----Original Message-----
From: ddots-l-bounce@xxxxxxxxxxxxx
[mailto:ddots-l-bounce@xxxxxxxxxxxxx] On Behalf Of Chi Kim
Sent: Thursday, June 23, 2016 8:41 PM
To: ddots-l@xxxxxxxxxxxxx
Subject: [ddots-l] Re: Accessibility Review for Focusrite Scarlett
2i2 Second Generation
Hi Dave,
Like you said, it could be a grounding issue.
If you have a access to a laptop, use the audio interface with the
laptop running on battery without power.
Then don't plug in anything into the audio interface except
microphone, and listen with a headphone instead of speaker. If the
hum goes away, then it's most likely a electrical problem.
Chi
On 6/23/2016 6:57 PM, Dave Hillebrandt wrote:
Hello Chi, I've also found this interface to work very well and with<
sonar, you have access to more adjustments. However, I am
experiencing a problem as of late and wonder if you or anyone else
has ideas what it could be. This is ran through usb and when
listening to the monitor and using a mic with fantom power, I am
hearing a low frequency motor boat type sound on occasion. Not sure
if its the computer, the Scarlet or what. Doesn't always happen when
fresh reboot and most of the time its in there. Decided to try
different usb ports yesterday and didn't notice any real difference.
suppose it could be in the power supply of the computer. Any
experience with this. otherwise, a great little product and like it
much better than the M-audio that I used and was totally
inaccessible. Like the knobs and switches. Dave
On 6/23/2016 3:53 PM, Chi Kim wrote:
Hi All,PLEASE READ THIS FOOTER AT LEAST ONCE!
Sorry for the cross posting, but I'm sure it'd be useful
information for people looking for a new audio interface.
I just bought a Scarlett 2i2 second generation, and played for a
day. I wanted to let you know what to expect in terms of
accessibility. Let's go from good news to bad news.
The hardware is 100% accessible. Everything is switches, knobs, and
a button.
On Mac side, there's nothing to install, it works out of the box.
There's an optional low latency driver. Even if you install the
optional driver, there's no software for control panel.
You set latency and sampling rate in your DAW. This is no problem
if you use Pro Tools and Logic, but if you use software that
doesn't let you adjust latency, this might be a problem. One
example would be the latest Garageband.
I might have missed, but I couldn't find where you can adjust the
latency outside DAW. I didn't see anything about it in the manual
either. This should be a problem for everyone, not just VI users.
On Windows, you have to install their driver, and unfortunately the
Asio panel is not accessible. Screen reader reads only minimize and
maximize, not even the title. I haven't tested, but this might not
be a problem if you use wdm or Asio4All.
If you need an affordable, simple, secondary audio interface, it
fits the bill. There you go.
Chi
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