Emax

You can have a grounded 3 wire plug on a unit and one (or more) of the
following can also be true:
1) The ground lead is disconnected in the unit.
Should connect to metalwork / chassis, and also a tab on the power supply
itself.
This is the green wire inside the unit.


2) The ground in your wall actually isn't connected- you have to check this
with a unit that plugs into your wall outlet.
They usually have 3 lights to indicate any miswire / condition - typically
available at hardware stores / home improvement centers.
If this is the case you now have a "floating ground" - no true ground at
all.
Many homes may have this on a couple of outlets, and people may not even be
aware of it....

3) Ground reference issues- use a "ground loop isolator" which plugs into
the line level inputs / outputs.
These remove hum, etc.

-T


On Wed, Mar 27, 2013 at 11:53 AM, Martin <martinantill@...> wrote:

> **
>
>
> Thanks for your swift reply Ted! I will check that over i think you right
> about the power lead aka kettle lead as found on a water kettle.
> While playback the hiss occasionally gets louder or dissapears. ive
> checked leads etc and made sure there not crossing other power leads.
> If it were a ground difference or my machine needs to grounded how would i
> go about doing this? Isnt a plug grounded allready? sorry for confusion.
> Thanks
>
>
> --- In emax@yahoogroups.com, Ted Summers <djtbs1@...> wrote:
> >
> > reseat all the IC's on the audio board that are socketed.
> > you may have a bad connection to a chip.
> > you may also have a floating ground or voltage on the ground from a bad
> > wire / cable that you are using to sample in, or also a ground difference
> > level between your input device and the emax.
> >
> > As stated before SE disk does not update anything else or make any other
> > changes.
> > the SE update disk only updates bits in an EEPROM IC that holds
> calibration
> > parameters and the like.
> > Not the system firmware EPROM.
> > - the Emax has no circuit / capability to update the main system firmware
> > EPROM, unlike newer video cards and pc motherboards that have that kind
> of
> > capability (flash update).
> >
> > But again I don't think that the SE update is your issue.
> >
> >
> > I don't know what is meant by "kettle lead" ???....
> >
> > If it plays fine with a previously sampled sound, it doesn't make any
> sense
> > to blame the power supply.
> > If the power supply were injecting something into the circuit, I would
> > expect you would hear it at other times, not just sampling but also
> > playback.
> > as to some harsh sound when you power up, you may have a bad solder
> causing
> > an arc on the power supply, it's connector, or power switch COULD be
> going
> > bad.
> >
> > There is no way to know it without seeing the unit.
> >
> > If you don't know electronics, you should have someone with electronics
> > repair knowledge look at it (Jammie is in the UK as I see you are also,
> per
> > your email address)
> >
> > Suggest you contact him and have him take a look.
> >
> > Regards,
> > Ted Summers
> > Emax Yahoo! Users Group Co-Moderator
> >
> >
> >
> >
> >
> >
> >
> >
> > On Wed, Mar 27, 2013 at 9:34 AM, Martin <martinantill@...> wrote:
> >
> > > **
>
> > >
> > >
> > > Hi All can someone help me as my emax 1 rack is petty useless to me as
> is.
> > > someone previously posted this on my behalf and i still have the same
> > > problem after calibration using the diagnostics sheet.
> > > I cant seem to record or play samples without a high freq white
> > > noise/static/hiss sound on top of the samples!? other than the SE disk
> with
> > > sounds already on and any other factory disks(they play without noise
> and
> > > the machine works perfect.)
> > > It hasnt allways done this i used to be able to record without this
> noise
> > > on top and all of a sudden it started acting up.Iv tried pretty much
> > > everything calibrating,new os 1.1 3.2 and SE 1.1 on new disks made with
> > > EXMP,Checked filters, sample rate adrs etc.Copied the working SE disk
> to a
> > > formatted disk and then deleted the sounds then recording into it but
> still
> > > the bad sound!.
> > > I may have changed the kettle lead whilst moving could this be the
> > > ploblem? Is there a specific spec for the emax power lead? or Is there
> a
> > > setting/effect in the machine that could be the cause of this
> hiss/static?
> > > Note with the lp filter i can filter out the white noise. the previous
> > > owner told me the machine is not faulty if you can filter out the
> noise you
> > > may have corrupted the disk/samples?.
> > >
> > > Theres allways a harsh ripping noise or click when i turn the machine
> > > on.Im thinking there may be something wrong with the power supply or
> lead?.
> > > Or Could it be ive used a disk that has corrupted the machine/os?? or
> > > upgraded to the se twice and corrupted the machine?.
> > > Once you have upgraded to SE can you use only disks with SE 1.1 on
> them?
> > > or can you use other disks as long as there a EMAX os? ie 1.1 3.2 etc.
> > > would formatting the machine back to original settngs then i can
> > > re-upgrade to the se using a fresh disk help? Sorry for all the
> questions
> > > just trying to sort this problem out so i can use the emax to
> sample/record.
> > > Any suggestion would be very helpful!
> > >
> > >
> > >
> > >
> >
> >
> > [Non-text portions of this message have been removed]
> >
>
>  
>


[Non-text portions of this message have been removed]