Author:
Date:
Subject:
Greg Guarino
2008-06-13 13:23:16
Edirol R1 Hum when used with Power Supply: Any Fixes?
We've found that the Edirol R1 produces a hum when used with its power
supply, but not with the batteries. Has anyone come up with a good
workaround for this?
Greg Guarino
Author:
Date:
Subject:
Jerohm
2008-06-13 10:43:38
Re: Edirol R1 Hum when used with Power Supply: Any Fixes?
I have an HP laptop that needs the power adapter to be plugged into a
ground adapter (cheater plug) WITHOUT connecting the GROUNDING lead. ... may
or MAY NOT help, but I would appreciate knowing what YOU found.
Thanks,
j
"Greg Guarino" <[email protected]> wrote in message
news:ess454pdveak3k9ksvm4gbm8sdbqa8fn9d@4ax.com...
> We've found that the Edirol R1 produces a hum when used with its power
> supply, but not with the batteries. Has anyone come up with a good
> workaround for this?
>
> Greg Guarino
Author:
Date:
Subject:
Scott Dorsey
2008-06-15 19:03:12
Re: Edirol R1 Hum when used with Power Supply: Any Fixes?
Jerohm <[email protected]> wrote:
>I have an HP laptop that needs the power adapter to be plugged into a
>ground adapter (cheater plug) WITHOUT connecting the GROUNDING lead. ... may
>or MAY NOT help, but I would appreciate knowing what YOU found.
This is a ground loop. Correct and safe methods for dealing with ground
loops are discussed in the FAQ. Sucide cords are neither correct nor safe.
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."
Author:
Date:
Subject:
Laurence Payne
2008-06-13 16:11:04
Re: Edirol R1 Hum when used with Power Supply: Any Fixes?
On Fri, 13 Jun 2008 13:23:16 GMT, Greg Guarino <[email protected]>
wrote:
>We've found that the Edirol R1 produces a hum when used with its power
>supply, but not with the batteries. Has anyone come up with a good
>workaround for this?
Record something with nothing connected except power supply and
microphone. Listen to it with just headphones attached. Is the hum
recorded?
Author:
Date:
Subject:
20to20.keith@gmail.com
2008-06-13 22:53:02
Re: Edirol R1 Hum when used with Power Supply: Any Fixes?
On Jun 13, 11:23 pm, Greg Guarino <[email protected]> wrote:
> We've found that the Edirol R1 produces a hum when used with its power
> supply, but not with the batteries. Has anyone come up with a good
> workaround for this?
>
> Greg Guarino
.Check the voltage on the AC adaptor ( the website did not indicate
polarity or voltage) to see if it is correct.
.Change the AC adaptor to give a regulated supply at the correct
voltage.
Keith
Author:
Date:
Subject:
Paul Stamler
2008-06-15 01:10:45
Re: Edirol R1 Hum when used with Power Supply: Any Fixes?
<[email protected]> wrote in message
news:2b35bb60-fd14-4114-b3b3-fd7541c81a2d@r37g2000prm.googlegroups.com...
> On Jun 13, 11:23 pm, Greg Guarino <[email protected]> wrote:
> > We've found that the Edirol R1 produces a hum when used with its power
> > supply, but not with the batteries. Has anyone come up with a good
> > workaround for this?
What frequency is the hum? 60Hz? Or 120Hz? (substitute "50Hz" and "100Hz" if
appropriate.) Look in a DAW to know for sure.
Peace,
Paul
Author:
Date:
Subject:
Scott Dorsey
2008-06-15 19:01:34
Re: Edirol R1 Hum when used with Power Supply: Any Fixes?
In article <[email protected]>,
Greg Guarino <[email protected]> wrote:
>We've found that the Edirol R1 produces a hum when used with its power
>supply, but not with the batteries. Has anyone come up with a good
>workaround for this?
How about a regulated power supply? Or tossing some capacitance on the
output of the one you've got?
Unless the issue you've got is a ground loop, in which case an audio
transformer might be in order.
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."
|
