Mailist to discuss all issues regarding the Digitech GSP-2101 Guitar FX Processor

Hi there,

bought myself a used control one but when I plug it into my 2101 there
is what sounds like a 50Hz hum coming from the unit. I use a new 5
meter midi cable. Any ideas?

Cheers,
Helmut

----- Original Message -----

From: drmabooze

To: gsp-2101@yahoogroups.com

Sent: Wednesday, November 16, 2005 7:17 AM

Subject: [gsp-2101] Humming 2101 with control one

Hi there,

bought myself a used control one but when I plug it into my 2101 there
is what sounds like a 50Hz hum coming from the unit. I use a new 5
meter midi cable. Any ideas?

Cheers,
Helmut

I think the control one might use a 7 pin/conductor midi cable, and/or that
it supplies the power to the control one. Someone else on the list might be
more knowledgeable (I've never used a control 1).

-----Original Message-----
From: gsp-2101@yahoogroups.com [mailto:gsp-2101@yahoogroups.com] On Behalf
Of drmabooze
Sent: Wednesday, November 16, 2005 7:18 AM
To: gsp-2101@yahoogroups.com
Subject: [gsp-2101] Humming 2101 with control one

 

Hi there,

bought myself a used control one but when I plug it into my 2101 there
is what sounds like a 50Hz hum coming from the unit. I use a new 5
meter midi cable. Any ideas?

Cheers,
Helmut






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Refer to the manual pg 9, using a 5-pin MIDI cable should work if 
all 5 connections are connected at both ends, most are. MIDI only 
uses three, the other two pins power the control one. Connect it to 
the Foot Controller connector on the back of the GSP-2101, not the 
MIDI connector(s).
This may be why you are getting the hum.
Try again with a high quality MIDI cable to the footswitch 
connector, (NOT MIDI), and you should be OK.
Gerry O'Dowd

--- In gsp-2101@yahoogroups.com, "strategy400" <strategy400@h...> 
wrote:
>
> I think the control one might use a 7 pin/conductor midi cable, 
and/or that
> it supplies the power to the control one. Someone else on the list 
might be
> more knowledgeable (I've never used a control 1).
> 
>  
> 
> -----Original Message-----
> From: gsp-2101@yahoogroups.com [mailto:gsp-2101@yahoogroups.com] 
On Behalf
> Of drmabooze
> Sent: Wednesday, November 16, 2005 7:18 AM
> To: gsp-2101@yahoogroups.com
> Subject: [gsp-2101] Humming 2101 with control one
> 
>  
> 
> Hi there,
> 
> bought myself a used control one but when I plug it into my 2101 
there
> is what sounds like a 50Hz hum coming from the unit. I use a new 5
> meter midi cable. Any ideas?
> 
> Cheers,
> Helmut
> 
> 
> 
> 
> 
> 
> SPONSORED LINKS 
> 
> 
> Music
> <http://groups.yahoo.com/gads?
t=ms&k=Music+instruments&w1=Music+instruments&
> 
w2=Instrument+music+online+store&w3=Online+music+instrument+store&w4=
Music+i
> 
nstrument+stores&w5=Music+instrument+sale&w6=Kid+music+instrument&c=6
&s=175&
> sig=i7xEdQv1q1lviqDdtExafg>  instruments 
> 
> Instrument
> <http://groups.yahoo.com/gads?
t=ms&k=Instrument+music+online+store&w1=Music+
> 
instruments&w2=Instrument+music+online+store&w3=Online+music+instrume
nt+stor
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e&w4=Music+instrument+stores&w5=Music+instrument+sale&w6=Kid+music+in
strumen
> t&c=6&s=175&.sig=q4DiA0vAUoRxgePlPhKBgw>  music online store 
> 
> Online
> <http://groups.yahoo.com/gads?
t=ms&k=Online+music+instrument+store&w1=Music+
> 
instruments&w2=Instrument+music+online+store&w3=Online+music+instrume
nt+stor
> 
e&w4=Music+instrument+stores&w5=Music+instrument+sale&w6=Kid+music+in
strumen
> t&c=6&s=175&.sig=upq0MPSndoZwO7MnIYpW4g>  music instrument store 
> 
> 
> Music
> <http://groups.yahoo.com/gads?
t=ms&k=Music+instrument+stores&w1=Music+instru
> 
ments&w2=Instrument+music+online+store&w3=Online+music+instrument+sto
re&w4=M
> 
usic+instrument+stores&w5=Music+instrument+sale&w6=Kid+music+instrume
nt&c=6&
> s=175&.sig=YThbw41V7IdlO71r0_56fw>  instrument stores 
> 
> Music
> <http://groups.yahoo.com/gads?
t=ms&k=Music+instrument+sale&w1=Music+instrume
> 
nts&w2=Instrument+music+online+store&w3=Online+music+instrument+store
&w4=Mus
> 
ic+instrument+stores&w5=Music+instrument+sale&w6=Kid+music+instrument
&c=6&s=
> 175&.sig=d55N9w1GC3OBBZjq8HVGmQ>  instrument sale 
> 
> Kid
> <http://groups.yahoo.com/gads?
t=ms&k=Kid+music+instrument&w1=Music+instrumen
> 
ts&w2=Instrument+music+online+store&w3=Online+music+instrument+store&
w4=Musi
> 
c+instrument+stores&w5=Music+instrument+sale&w6=Kid+music+instrument&
c=6&s=1

> 75&.sig=onFFIVGpSCL8w2qBg4nzRA>  music instrument 
> 
>  
> 
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The most likely and less obvious reason for the hum is
a difference in grounding between the outlets you have
your processor, peddle, and amp pluged into.  If you
have one device plugged into an outlet on another wall
or circuit, the difference in ground WILL call a nasty
60Hz hum.

Jeff

--- Gerry ODowd <gerryodowd@...> wrote:

> Refer to the manual pg 9, using a 5-pin MIDI cable
> should work if 
> all 5 connections are connected at both ends, most
> are. MIDI only 
> uses three, the other two pins power the control
> one. Connect it to 
> the Foot Controller connector on the back of the
> GSP-2101, not the 
> MIDI connector(s).
> This may be why you are getting the hum.
> Try again with a high quality MIDI cable to the
> footswitch 
> connector, (NOT MIDI), and you should be OK.
> Gerry O'Dowd
> 
> --- In gsp-2101@yahoogroups.com, "strategy400"
> <strategy400@h...> 
> wrote:
> >
> > I think the control one might use a 7
> pin/conductor midi cable, 
> and/or that
> > it supplies the power to the control one. Someone
> else on the list 
> might be
> > more knowledgeable (I've never used a control 1).
> > 
> >  
> > 
> > -----Original Message-----
> > From: gsp-2101@yahoogroups.com
> [mailto:gsp-2101@yahoogroups.com] 
> On Behalf
> > Of drmabooze
> > Sent: Wednesday, November 16, 2005 7:18 AM
> > To: gsp-2101@yahoogroups.com
> > Subject: [gsp-2101] Humming 2101 with control one
> > 
> >  
> > 
> > Hi there,
> > 
> > bought myself a used control one but when I plug
> it into my 2101 
> there
> > is what sounds like a 50Hz hum coming from the
> unit. I use a new 5
> > meter midi cable. Any ideas?
> > 
> > Cheers,
> > Helmut
> > 
> > 
> > 
> > 
> > 
> > 
> > SPONSORED LINKS 
> > 
> > 
> > Music
> > <http://groups.yahoo.com/gads?
> t=ms&k=Music+instruments&w1=Music+instruments&
> > 
>
w2=Instrument+music+online+store&w3=Online+music+instrument+store&w4=
> Music+i
> > 
>
nstrument+stores&w5=Music+instrument+sale&w6=Kid+music+instrument&c=6
> &s=175&
> > sig=i7xEdQv1q1lviqDdtExafg>  instruments 
> > 
> > Instrument
> > <http://groups.yahoo.com/gads?
> t=ms&k=Instrument+music+online+store&w1=Music+
> > 
>
instruments&w2=Instrument+music+online+store&w3=Online+music+instrume
> nt+stor
> > 
>
e&w4=Music+instrument+stores&w5=Music+instrument+sale&w6=Kid+music+in
> strumen
> > t&c=6&s=175&.sig=q4DiA0vAUoRxgePlPhKBgw>  music
> online store 
> > 
> > Online
> > <http://groups.yahoo.com/gads?
> t=ms&k=Online+music+instrument+store&w1=Music+
> > 
>
instruments&w2=Instrument+music+online+store&w3=Online+music+instrume
> nt+stor
> > 
>
e&w4=Music+instrument+stores&w5=Music+instrument+sale&w6=Kid+music+in
> strumen
> > t&c=6&s=175&.sig=upq0MPSndoZwO7MnIYpW4g>  music
> instrument store 
> > 
> > 
> > Music
> > <http://groups.yahoo.com/gads?
> t=ms&k=Music+instrument+stores&w1=Music+instru
> > 
>
ments&w2=Instrument+music+online+store&w3=Online+music+instrument+sto
> re&w4=M
> > 
>
usic+instrument+stores&w5=Music+instrument+sale&w6=Kid+music+instrume
> nt&c=6&
> > s=175&.sig=YThbw41V7IdlO71r0_56fw>  instrument
> stores 
> > 
> > Music
> > <http://groups.yahoo.com/gads?
> t=ms&k=Music+instrument+sale&w1=Music+instrume
> > 
>
nts&w2=Instrument+music+online+store&w3=Online+music+instrument+store
> &w4=Mus
> > 
>
ic+instrument+stores&w5=Music+instrument+sale&w6=Kid+music+instrument
> &c=6&s=
> > 175&.sig=d55N9w1GC3OBBZjq8HVGmQ>  instrument sale 
> > 
> > Kid
> > <http://groups.yahoo.com/gads?
> t=ms&k=Kid+music+instrument&w1=Music+instrumen
> > 
>
ts&w2=Instrument+music+online+store&w3=Online+music+instrument+store&
> w4=Musi
> > 
>
c+instrument+stores&w5=Music+instrument+sale&w6=Kid+music+instrument&
> c=6&s=1
> > 75&.sig=onFFIVGpSCL8w2qBg4nzRA>  music instrument 
> > 
> >  
> > 
> >   _____  
> > 
> > YAHOO! GROUPS LINKS 
> > 
> >  
> > 
> > *          Visit your group "gsp-2101
> > <http://groups.yahoo.com/group/gsp-2101> " on the
> web.
> >   
> > 
> > *          To unsubscribe from this group, send an
> email to:
> >  gsp-2101-unsubscribe@yahoogroups.com
> >
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<mailto:gsp-2101-unsubscribe@yahoogroups.com?subject=Unsubscribe>
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> > <http://docs.yahoo.com/info/terms/>  Terms of
> Service. 
> > 
> >  
> > 
> >   _____
> >
> 
> 
> 
> 
> 



		
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Thanks for all the input so far.

The cable I use (plugged to the ctrl one jack of the 2101) is a new MIDI cable 
with all 5 pins wired, so the control one gets its voltage and apart from the 
hum works as it should (display, program switches, expression pedal). It's 
thinner but shorter than the original cable I had with my first 2101. I 
didn't open the plugs yet, should the plug housing be grounded? Should the 
cable be shielded? Does anybody know the pin assignment for the MIDI cable - 
on which pins is the voltage and how much should it be?

How can I tell a high quality MIDI cable from a bad one?

I agree that difference in grounding or wrong grounding is often the cause of 
hum but I can't see how that could happen in this case (except if the MIDI 
cable had a grounding/shielding problem - which I don't know). The devices 
are plugged into the same circuit and I had my old 2101 and control one 
working without problems at the same place.

Thanks again,
Helmut

Yahoo! FareChase - Search multiple travel sites in one click.

I agree with the 60 cycle as well.  As a side note, make sure that
your instrument as well as the cables are decent cables (not so much
the midi, but the guitar).  I run all acoustic nowadays- however, I
was using a Dean Markley soundhole pickup- it was VERY NOISY!.  Then I
switched to a Seymour Duncan Woody now and it is really quiet!! There
is quite a difference in the size of the cable that each uses.  The
Duncan is a heavier gauge.  Don't rememeber if this was mentioned
already or not, but check what else is plugged into the neighboring
outlet.  At church, our pastor runs through an old Fender Twin Reverb.
When I run through the same outlet or powerstrip- I am noisy as heck.
 When I plug in across the way, it is quite a bit cleaner.
Anyhow- that is my experience.





--- In gsp-2101@yahoogroups.com, "Dr. Mabooze" <drmabooze@g...> wrote:
>
> Thanks for all the input so far.
> 
> The cable I use (plugged to the ctrl one jack of the 2101) is a new
MIDI cable 
> with all 5 pins wired, so the control one gets its voltage and apart
from the 
> hum works as it should (display, program switches, expression
pedal). It's 
> thinner but shorter than the original cable I had with my first 2101. I 
> didn't open the plugs yet, should the plug housing be grounded?
Should the 
> cable be shielded? Does anybody know the pin assignment for the MIDI
cable - 
> on which pins is the voltage and how much should it be?
> 
> How can I tell a high quality MIDI cable from a bad one?
> 
> I agree that difference in grounding or wrong grounding is often the
cause of 
> hum but I can't see how that could happen in this case (except if
the MIDI 
> cable had a grounding/shielding problem - which I don't know). The
devices 

> are plugged into the same circuit and I had my old 2101 and control one 
> working without problems at the same place.
> 
> Thanks again,
> Helmut
>