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I got the hum

I got the hum

2002-04-23 by miki3mikius

brand new machine with the hum. Not on the headphones but on the main 
outs (not on the subs). Anyone any idear?

Re: [xl7] I got the hum

2002-04-24 by erik_magrini@Baxter.com

Does any of your other gear make a hum when connected to those same leads 
by any chance?   Not saying it's not your XL_7, just make sure it's not  a 
grounding issue first.  If you still have it, maybe pop open the botom and 
make sure everything is screwed in tight?

rEalm




brand new machine with the hum. Not on the headphones but on the main outs 
(not on the subs). Anyone any idear?

Re: I got the hum

2002-04-24 by miki3mikius

--- In xl7@y..., erik_magrini@B... wrote:

thanks for your help! It was a grounding problem. I had the cabels 
from my computer soundcard next to mp7 in the mixer and that produced 
the infamous hum. Still there is a very slight hum (higehr in tune), 
but thats tolerable. Btw can anyone tell me how these grounding 
problems happen and what to do to avoid them? Still I would like to 
run both the emu and the computer through my mixer.
Michael

> Does any of your other gear make a hum when connected to those same 
leads 
> by any chance?   Not saying it's not your XL_7, just make sure it's 
not  a 
> grounding issue first.  If you still have it, maybe pop open the 
botom and 
> make sure everything is screwed in tight?
> 
> rEalm
> 
> 
> 
> 
> brand new machine with the hum. Not on the headphones but on the 
main outs 
> (not on the subs). Anyone any idear?

Re: [xl7] Re: I got the hum

2002-04-24 by Alex Strudley

Biggest thing that helps is to use high quality shielded cables.  Don't use
those plasticky orange and grey 6 dollar Hosa cables. Do not run regular
instrument cables through your mixer to your sound card.  Get the more
expensive cables for that.  You can use regular instrument cables on your
synths to go into the mixer but not on the soundcard and not from your
studio monitors back to the mixer.  The extra money is worth it.
Above all use a power conditioner like a furman Rack Rider.
Don't get a Juice Goose because they are simply a power strip in a rackmount
case but the Furmans have RF filters in them.  A Furman Rack Rider is about
50 bucks from AMS or Musician's Friend.  Best 50 bucks you will ever spend.
I've got a few of them and can not imagine the horrors I would face if I ran
all my stuff through regular power strips that you could buy at a hardware
store.  No ghetto cables and no ghetto power supplies.  Your world will be
better.

Alex
------------------------------------



miki3mikius wrote:
Show quoted textHide quoted text
> --- In xl7@y..., erik_magrini@B... wrote:
>
> thanks for your help! It was a grounding problem. I had the cabels
> from my computer soundcard next to mp7 in the mixer and that produced
> the infamous hum. Still there is a very slight hum (higehr in tune),
> but thats tolerable. Btw can anyone tell me how these grounding
> problems happen and what to do to avoid them? Still I would like to
> run both the emu and the computer through my mixer.
> Michael
>
> > Does any of your other gear make a hum when connected to those same
> leads
> > by any chance?   Not saying it's not your XL_7, just make sure it's
> not  a
> > grounding issue first.  If you still have it, maybe pop open the
> botom and
> > make sure everything is screwed in tight?
> >
> > rEalm
> >
> >
> >
> >
> > brand new machine with the hum. Not on the headphones but on the
> main outs
> > (not on the subs). Anyone any idear?
>
>
> To unsubscribe from this group, send an email to:
> xl7-unsubscribe@yahoogroups.com
>
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/

Re: [xl7] Re: I got the hum

2002-04-24 by Jonathan El-Bizri

Try and stay away from the Monster stuff too. The cables aren't particularly bad, but any cable which comes with little arrows on the connectors so you can 'align' the cable in the right 'direction' for your signal is crack smoke technology.
Show quoted textHide quoted text
----- Original Message -----
Sent: Wednesday, April 24, 2002 2:54 PM
Subject: Re: [xl7] Re: I got the hum

Biggest thing that helps is to use high quality shielded cables. Don't use
those plasticky orange and grey 6 dollar Hosa cables. Do not run regular
instrument cables through your mixer to your sound card. Get the more
expensive cables for that. You can use regular instrument cables on your
synths to go into the mixer but not on the soundcard and not from your
studio monitors back to the mixer. The extra money is worth it.
Above all use a power conditioner like a furman Rack Rider.
Don't get a Juice Goose because they are simply a power strip in a rackmount
case but the Furmans have RF filters in them. A Furman Rack Rider is about
50 bucks from AMS or Musician's Friend. Best 50 bucks you will ever spend.
I've got a few of them and can not imagine the horrors I would face if I ran
all my stuff through regular power strips that you could buy at a hardware
store. No ghetto cables and no ghetto power supplies. Your world will be
better.

Alex
------------------------------------



miki3mikius wrote:

> --- In xl7@y..., erik_magrini@B... wrote:
>
> thanks for your help! It was a grounding problem. I had the cabels
> from my computer soundcard next to mp7 in the mixer and that produced
> the infamous hum. Still there is a very slight hum (higehr in tune),
> but thats tolerable. Btw can anyone tell me how these grounding
> problems happen and what to do to avoid them? Still I would like to
> run both the emu and the computer through my mixer.
> Michael
>
> > Does any of your other gear make a hum when connected to those same
> leads
> > by any chance? Not saying it's not your XL_7, just make sure it's
> not a
>; > grounding issue first. If you still have it, maybe pop open the
> botom and
> > make sure everything is screwed in tight?
> >
> > rEalm
> >
> >
> >
> >
> > brand new machine with the hum. Not on the headphones but on the
> main outs
> > (not on the subs). Anyone any idear?
>
>
> To unsubscribe from this group, send an email to:
> xl7-unsubscribe@yahoogroups.com
>
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/


To unsubscribe from this group, send an email to:
xl7-unsubscribe@yahoogroups.com



Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.

Re: [xl7] Re: I got the hum

2002-04-24 by Alex Strudley

Word.... fa sho monster is bunk.


Jonathan El-Bizri wrote:

>  Try and stay away from the Monster stuff too. The cables aren't
> particularly bad, but any cable which comes with little arrows on the
> connectors so you can 'align' the cable in the right 'direction' for
> your signal is crack smoke technology.
>
>      ----- Original Message -----
>      From: Alex Strudley
>      To: xl7@yahoogroups.com
>      Sent: Wednesday, April 24, 2002 2:54 PM
>      Subject: Re: [xl7] Re: I got the hum
>       Biggest thing that helps is to use high quality shielded
>      cables.  Don't use
>      those plasticky orange and grey 6 dollar Hosa cables. Do not
>      run regular
>      instrument cables through your mixer to your sound card.
>      Get the more
>      expensive cables for that.  You can use regular instrument
>      cables on your
>      synths to go into the mixer but not on the soundcard and not
>      from your
>      studio monitors back to the mixer.  The extra money is worth
>      it.
>      Above all use a power conditioner like a furman Rack Rider.
>      Don't get a Juice Goose because they are simply a power
>      strip in a rackmount
>      case but the Furmans have RF filters in them.  A Furman Rack
>      Rider is about
>      50 bucks from AMS or Musician's Friend.  Best 50 bucks you
>      will ever spend.
>      I've got a few of them and can not imagine the horrors I
>      would face if I ran
>      all my stuff through regular power strips that you could buy
>      at a hardware
>      store.  No ghetto cables and no ghetto power supplies.  Your
>      world will be
>      better.
>
>      Alex
>      ------------------------------------
>
>
>
>      miki3mikius wrote:
>
>      > --- In xl7@y..., erik_magrini@B... wrote:
>      >
>      > thanks for your help! It was a grounding problem. I had
>      the cabels
>      > from my computer soundcard next to mp7 in the mixer and
>      that produced
>      > the infamous hum. Still there is a very slight hum (higehr
>      in tune),
>      > but thats tolerable. Btw can anyone tell me how these
>      grounding
>      > problems happen and what to do to avoid them? Still I
>      would like to
>      > run both the emu and the computer through my mixer.
>      > Michael
>      >
>      > > Does any of your other gear make a hum when connected to
>      those same
>      > leads
>      > > by any chance?   Not saying it's not your XL_7, just
>      make sure it's
>      > not  a
>      > > grounding issue first.  If you still have it, maybe pop
>      open the
>      > botom and
>      > > make sure everything is screwed in tight?
>      > >
>      > > rEalm
>      > >
>      > >
>      > >
>      > >
>      > > brand new machine with the hum. Not on the headphones
>      but on the
>      > main outs
>      > > (not on the subs). Anyone any idear?
>      >
>      >
>      > To unsubscribe from this group, send an email to:
>      > xl7-unsubscribe@yahoogroups.com
>      >
>      >
>      >
>      > Your use of Yahoo! Groups is subject to
>      http://docs.yahoo.com/info/terms/
>
>
>      To unsubscribe from this group, send an email to:
>      xl7-unsubscribe@yahoogroups.com
>
>
>
>      Your use of Yahoo! Groups is subject to the Yahoo! Terms of
>      Service.
>
>
>                    Yahoo! Groups Sponsor
                        ADVERTISEMENT
Show quoted textHide quoted text
>
> To unsubscribe from this group, send an email to:
> xl7-unsubscribe@yahoogroups.com
>
>
>
> Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.

RE: [xl7] Re: I got the hum

2002-04-24 by Andre Lewis

More things not mentioned, Keep your cable lengths SHORT and keep your audio
cables away from your power cables away from your audio cables.  If they have to
cross do it at right angles, otherwise you'll get magnetic inductance like an
electro magnet = hum.
Show quoted textHide quoted text
-----Original Message-----
From: Alex Strudley [mailto:Alexs@...]
Sent: Wednesday, April 24, 2002 2:54 PM
To: xl7@yahoogroups.com
Subject: Re: [xl7] Re: I got the hum


Biggest thing that helps is to use high quality shielded cables.  Don't use
those plasticky orange and grey 6 dollar Hosa cables. Do not run regular
instrument cables through your mixer to your sound card.  Get the more
expensive cables for that.  You can use regular instrument cables on your
synths to go into the mixer but not on the soundcard and not from your
studio monitors back to the mixer.  The extra money is worth it.
Above all use a power conditioner like a furman Rack Rider.
Don't get a Juice Goose because they are simply a power strip in a rackmount
case but the Furmans have RF filters in them.  A Furman Rack Rider is about
50 bucks from AMS or Musician's Friend.  Best 50 bucks you will ever spend.
I've got a few of them and can not imagine the horrors I would face if I ran
all my stuff through regular power strips that you could buy at a hardware
store.  No ghetto cables and no ghetto power supplies.  Your world will be
better.

Alex
------------------------------------



miki3mikius wrote:

> --- In xl7@y..., erik_magrini@B... wrote:
>
> thanks for your help! It was a grounding problem. I had the cabels
> from my computer soundcard next to mp7 in the mixer and that produced
> the infamous hum. Still there is a very slight hum (higehr in tune),
> but thats tolerable. Btw can anyone tell me how these grounding
> problems happen and what to do to avoid them? Still I would like to
> run both the emu and the computer through my mixer.
> Michael
>
> > Does any of your other gear make a hum when connected to those same
> leads
> > by any chance?   Not saying it's not your XL_7, just make sure it's
> not  a
> > grounding issue first.  If you still have it, maybe pop open the
> botom and
> > make sure everything is screwed in tight?
> >
> > rEalm
> >
> >
> >
> >
> > brand new machine with the hum. Not on the headphones but on the
> main outs
> > (not on the subs). Anyone any idear?
>
>
> To unsubscribe from this group, send an email to:
> xl7-unsubscribe@yahoogroups.com
>
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/



To unsubscribe from this group, send an email to:
xl7-unsubscribe@yahoogroups.com



Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/

Re: I got the hum

2002-04-24 by ezra_gold

The other thing to do is run "balanced" signals and cabling whenever 
possible. This would be and XLR or 1/4in TRS wire where 3 wires carry 
a monophonic signal. Balanced signals seperate ground from the audio 
signal. Balanced signals are higher level (+4dbm vs -10dbm) and less 
affected by electrical noise. You can also "lift" ground at one end 
of the cable to prevent hum causing ground loops. 

There are conventions on how to lift ground and this is the source of 
the arrows on Monster cables (which I think are bunk too but Im just 
sayin....). 

You also need to be carefull when converting between unbalaced and 
balanced signals. You need to follow the manufacturer reccomended 
grounding and conversion practices our use a "DI box"/Impedance 
Transformer. Pick up a good studio book it will explain things 
better. 

On the xl-7 the main outs are balanced but the subs are not. Using 
a "guitar cable" that grounds "ring" to "sleeve" is acceptable 
practice for converting the balanced outs on the xl-7 to unbalanced.

--Ezra


--- In xl7@y..., Alex Strudley <Alexs@e...> wrote:
> Biggest thing that helps is to use high quality shielded cables.  
Don't use
> those plasticky orange and grey 6 dollar Hosa cables. Do not run 
regular
> instrument cables through your mixer to your sound card.  Get the 
more
> expensive cables for that.  You can use regular instrument cables 
on your
> synths to go into the mixer but not on the soundcard and not from 
your
> studio monitors back to the mixer.  The extra money is worth it.
> Above all use a power conditioner like a furman Rack Rider.
> Don't get a Juice Goose because they are simply a power strip in a 
rackmount
> case but the Furmans have RF filters in them.  A Furman Rack Rider 
is about
> 50 bucks from AMS or Musician's Friend.  Best 50 bucks you will 
ever spend.
> I've got a few of them and can not imagine the horrors I would face 
if I ran
> all my stuff through regular power strips that you could buy at a 
hardware
> store.  No ghetto cables and no ghetto power supplies.  Your world 
will be
> better.
> 
> Alex
> ------------------------------------
> 
> 
> 
> miki3mikius wrote:
> 
> > --- In xl7@y..., erik_magrini@B... wrote:
> >
> > thanks for your help! It was a grounding problem. I had the cabels
> > from my computer soundcard next to mp7 in the mixer and that 
produced
> > the infamous hum. Still there is a very slight hum (higehr in 
tune),
> > but thats tolerable. Btw can anyone tell me how these grounding
> > problems happen and what to do to avoid them? Still I would like 
to
> > run both the emu and the computer through my mixer.
> > Michael
> >
> > > Does any of your other gear make a hum when connected to those 
same
> > leads
> > > by any chance?   Not saying it's not your XL_7, just make sure 
it's
> > not  a
> > > grounding issue first.  If you still have it, maybe pop open the
> > botom and
> > > make sure everything is screwed in tight?
> > >
> > > rEalm
> > >
> > >
> > >
> > >
> > > brand new machine with the hum. Not on the headphones but on the
> > main outs
> > > (not on the subs). Anyone any idear?
> >
> >
> > To unsubscribe from this group, send an email to:
> > xl7-unsubscribe@y...
> >
> >
> >
> > Your use of Yahoo! Groups is subject to 
http://docs.yahoo.com/info/terms/

more cable talk

2002-04-24 by mikexl7

I am in a situation where all my cables are packed into a road 
case.  I have all that is balanced using balanced cables but there 
still is some hum.  I think some of it is off my new mixer (alesis 
studio 12R) before this mixer i was using a mackie 1604vlz.  I think 
it had a lower noise floor.  Almost all my cables where made by me 
and are shielded and of good quality but what can i do about the 
power cables?

Any advice other than the power conditioner.
I am totaly packed for room in this box so I would have to mount it 
in the back some how.  so other than that what can I do?

Thanks for any help.

Mike G.


--- In xl7@y..., "ezra_gold" <ezra_gold@y...> wrote:
> The other thing to do is run "balanced" signals and cabling 
whenever 
> possible. This would be and XLR or 1/4in TRS wire where 3 wires 
carry 
> a monophonic signal. Balanced signals seperate ground from the 
audio 
> signal. Balanced signals are higher level (+4dbm vs -10dbm) and 
less 
> affected by electrical noise. You can also "lift" ground at one 
end 
> of the cable to prevent hum causing ground loops. 
> 
> There are conventions on how to lift ground and this is the source 
of 
> the arrows on Monster cables (which I think are bunk too but Im 
just 
> sayin....). 
> 
> You also need to be carefull when converting between unbalaced and 
> balanced signals. You need to follow the manufacturer reccomended 
> grounding and conversion practices our use a "DI box"/Impedance 
> Transformer. Pick up a good studio book it will explain things 
> better. 
> 
> On the xl-7 the main outs are balanced but the subs are not. Using 
> a "guitar cable" that grounds "ring" to "sleeve" is acceptable 
> practice for converting the balanced outs on the xl-7 to 
unbalanced.
> 
> --Ezra
> 
> 
> --- In xl7@y..., Alex Strudley <Alexs@e...> wrote:
> > Biggest thing that helps is to use high quality shielded 
cables.  
> Don't use
> > those plasticky orange and grey 6 dollar Hosa cables. Do not run 
> regular
> > instrument cables through your mixer to your sound card.  Get 
the 
> more
> > expensive cables for that.  You can use regular instrument 
cables 
> on your
> > synths to go into the mixer but not on the soundcard and not 
from 
> your
> > studio monitors back to the mixer.  The extra money is worth it.
> > Above all use a power conditioner like a furman Rack Rider.
> > Don't get a Juice Goose because they are simply a power strip in 
a 
> rackmount
> > case but the Furmans have RF filters in them.  A Furman Rack 
Rider 
> is about
> > 50 bucks from AMS or Musician's Friend.  Best 50 bucks you will 
> ever spend.
> > I've got a few of them and can not imagine the horrors I would 
face 
> if I ran
> > all my stuff through regular power strips that you could buy at 
a 
> hardware
> > store.  No ghetto cables and no ghetto power supplies.  Your 
world 
> will be
> > better.
> > 
> > Alex
> > ------------------------------------
> > 
> > 
> > 
> > miki3mikius wrote:
> > 
> > > --- In xl7@y..., erik_magrini@B... wrote:
> > >
> > > thanks for your help! It was a grounding problem. I had the 
cabels
> > > from my computer soundcard next to mp7 in the mixer and that 
> produced
> > > the infamous hum. Still there is a very slight hum (higehr in 
> tune),
> > > but thats tolerable. Btw can anyone tell me how these grounding
> > > problems happen and what to do to avoid them? Still I would 
like 
> to
> > > run both the emu and the computer through my mixer.
> > > Michael
> > >
> > > > Does any of your other gear make a hum when connected to 
those 
> same
> > > leads
> > > > by any chance?   Not saying it's not your XL_7, just make 
sure 
> it's
> > > not  a
> > > > grounding issue first.  If you still have it, maybe pop open 
the
> > > botom and
> > > > make sure everything is screwed in tight?
> > > >
> > > > rEalm
> > > >
> > > >
> > > >
> > > >
> > > > brand new machine with the hum. Not on the headphones but on 
the
Show quoted textHide quoted text
> > > main outs
> > > > (not on the subs). Anyone any idear?
> > >
> > >
> > > To unsubscribe from this group, send an email to:
> > > xl7-unsubscribe@y...
> > >
> > >
> > >
> > > Your use of Yahoo! Groups is subject to 
> http://docs.yahoo.com/info/terms/

Re: more cable talk

2002-04-25 by ezra_gold

The first thing to do is figure out what kind of hum you have. If you
have 60hz/50hz (depending on your local power system) it will be
approxamately the same tone as the third A below Middle C. This is a
ground problem, the most common source of hum. You can reduce the
likelyhood of a ground problem by making sure all connectors in the
system (audio, power and control) are clean and all power is coming
from one good clean source. 

Ground issues can be divided into two categories, poor ground and
ground loops. A poor ground is generally the result of bad or dirty
connections. This is like removing the ground wire from your
turntables to your mixer. 

A ground loop is when signals start resonating on a section of the
ground path that connects to itself in a loop. To fix this you need to
make sure that there is one and only one path to ground from any piece
of equipment. For example, an instrument that sees ground from the
power cable and through an audio out through the mixer into the
mixer's power cable could have a problem. It may not, but it could.
These loops can get complex if you are not carefull and increasing
complexity leads to an increasing chance of hum. Ground running from
an instrument to the mixer to some effects to another instrument will
almost definitely cause a problem.

To track this down, unpulg all of the audio inputs from the mixer.
Then start pugging things in one at a time until the hum comes back.
Now see if you can unplug something else again to make the hum stop.
Once you have found the culprit wire(s) you need to somehow disconnect
ground between the instrument/wire and the mixer. If your problem is a
balanced cable it is easy, just disconnect the ground (shield, sleeve
or XLR pin 1) at the instrument end of the cable. If the culprit is
unbalaced you will need a "DI box" or isolation transformer to
seperate the ground signal.

If the tone is high pitched the problem is usuall interference from a
noisy piece of equipment. Try turning things off until you find what
makes the hum go away. Dont just try things in the rack, try things
around the room. Flourecent lights, dimmer switches, computer monitors
and cell phones are some the more common culprits. Once again, good
clean connections and a good clean power source will always help
(especially if it is noise from something like a flourecent light or
dimmer switch).

Hope this is of some help,
Ezra


--- In xl7@y..., "mikexl7" <mikexl7@y...> wrote:
Show quoted textHide quoted text
> I am in a situation where all my cables are packed into a road 
> case.  I have all that is balanced using balanced cables but there 
> still is some hum.  I think some of it is off my new mixer (alesis 
> studio 12R) before this mixer i was using a mackie 1604vlz.  I think 
> it had a lower noise floor.  Almost all my cables where made by me 
> and are shielded and of good quality but what can i do about the 
> power cables?
> 
> Any advice other than the power conditioner.
> I am totaly packed for room in this box so I would have to mount it 
> in the back some how.  so other than that what can I do?
> 
> Thanks for any help.
> 
> Mike G.
>

RE: [xl7] Re: I got the hum

2002-04-25 by John Royle

If i connect a balanced connector into one of the sub-outs, and then connect it to a balanced input in my mixer, will it just work as a normal unbalanced signal?

I only ask this becuase I know the XL-7 has 'intelligent' connectors (ie. it knows when something is connected to it's sub-outs), and i also know that a stereo jack is used for the send/return path on the sub-outs.

(I'm just about to buy a load of cables for my xl-7 and i will get all stereo connectors if it will work ok - just because the stereo ones are only slightly more expensive than mono and i will be able to use them for other stuff later as well).

john.

-----Original Message-----
From: ezra_gold [mailto:ezra_gold@...]
Sent: 24 April 2002 23:55
To: xl7@yahoogroups.com
Subject: [xl7] Re: I got the hum

On the xl-7 the main outs are balanced but the subs are not. Using
a "guitar cable" that grounds "ring" to "sleeve" is acceptable
practice for converting the balanced outs on the xl-7 to unbalanced.


Re: [xl7] more cable talk

2002-04-25 by erik_magrini@Baxter.com

I am in a situation where all my cables are packed into a road case.  I 
have all that is balanced using balanced cables but there still is some 
hum.  I think some of it is off my new mixer (alesis studio 12R) before 
this mixer i was using a mackie 1604vlz.  I think it had a lower noise 
floor.  Almost all my cables where made by me and are shielded and of good 
quality but what can i do about the power cables?

>>>Having everything all in one case can definitely lead to some hum, but 
there's still things you can do to avoid it.  Obviously you're using TRS 
cables where applicable, so that's a good start.  The biggest thing you 
can do, is keep your audio leads as short as possible, and definitely run 
all of them on onhe side of your rack, while keep all the power cords on 
the other.  Having audio lines laying next to power cords is a big no no.

As for your mixer, why oh why did you go from a Mackie to that Alesis?  I 
can guarantee you that the Alesis will have a higher noise floor than the 
Mackie, which are known to be some of the best mixers for the price.  In 
fact short of a Neve or SSL (c'mon lottery!), I won't buy anything other 
than Mackie. <<<

Any advice other than the power conditioner. I am totaly packed for room 
in this box so I would have to mount it 
in the back some how.  so other than that what can I do?

>>>Well, the easiest thing to do (albeit more $$$) would be to get a 
bigger rack.  If not, you can buy just the rack rails and mount them in 
the back of the case if you have room.  Most of the rack mounted power 
strips aren't very deep, so this should work.<<<

rEalm

Re: [xl7] more cable talk

2002-04-25 by Alex Strudley

I understand being packed for room but a power conditioner only occupies 1
rack space and is only about 4 inches deep.  I have a rack that I use for
giging and studio applications.  I take this rack with me wherever I go.  10
Spaces big and everyone I know who has a rack no matter how big or small,
has a power conditioner module in the top space.  It's just like a rule.  If
you are going to buy a 10 space rack, think of it as 9 because automatically
designate one space for power.  If your rack can't hold any more gear, time
to get a new rack.  Power conditioners are essential.

mikexl7 wrote:
Show quoted textHide quoted text
> I am in a situation where all my cables are packed into a road
> case.  I have all that is balanced using balanced cables but there
> still is some hum.  I think some of it is off my new mixer (alesis
> studio 12R) before this mixer i was using a mackie 1604vlz.  I think
> it had a lower noise floor.  Almost all my cables where made by me
> and are shielded and of good quality but what can i do about the
> power cables?
>
> Any advice other than the power conditioner.
> I am totaly packed for room in this box so I would have to mount it
> in the back some how.  so other than that what can I do?
>
> Thanks for any help.
>
> Mike G.
>
> --- In xl7@y..., "ezra_gold" <ezra_gold@y...> wrote:
> > The other thing to do is run "balanced" signals and cabling
> whenever
> > possible. This would be and XLR or 1/4in TRS wire where 3 wires
> carry
> > a monophonic signal. Balanced signals seperate ground from the
> audio
> > signal. Balanced signals are higher level (+4dbm vs -10dbm) and
> less
> > affected by electrical noise. You can also "lift" ground at one
> end
> > of the cable to prevent hum causing ground loops.
> >
> > There are conventions on how to lift ground and this is the source
> of
> > the arrows on Monster cables (which I think are bunk too but Im
> just
> > sayin....).
> >
> > You also need to be carefull when converting between unbalaced and
> > balanced signals. You need to follow the manufacturer reccomended
> > grounding and conversion practices our use a "DI box"/Impedance
> > Transformer. Pick up a good studio book it will explain things
> > better.
> >
> > On the xl-7 the main outs are balanced but the subs are not. Using
> > a "guitar cable" that grounds "ring" to "sleeve" is acceptable
> > practice for converting the balanced outs on the xl-7 to
> unbalanced.
> >
> > --Ezra
> >
> >
> > --- In xl7@y..., Alex Strudley <Alexs@e...> wrote:
> > > Biggest thing that helps is to use high quality shielded
> cables.
> > Don't use
> > > those plasticky orange and grey 6 dollar Hosa cables. Do not run
> > regular
> > > instrument cables through your mixer to your sound card.  Get
> the
> > more
> > > expensive cables for that.  You can use regular instrument
> cables
> > on your
> > > synths to go into the mixer but not on the soundcard and not
> from
> > your
> > > studio monitors back to the mixer.  The extra money is worth it.
> > > Above all use a power conditioner like a furman Rack Rider.
> > > Don't get a Juice Goose because they are simply a power strip in
> a
> > rackmount
> > > case but the Furmans have RF filters in them.  A Furman Rack
> Rider
> > is about
> > > 50 bucks from AMS or Musician's Friend.  Best 50 bucks you will
> > ever spend.
> > > I've got a few of them and can not imagine the horrors I would
> face
> > if I ran
> > > all my stuff through regular power strips that you could buy at
> a
> > hardware
> > > store.  No ghetto cables and no ghetto power supplies.  Your
> world
> > will be
> > > better.
> > >
> > > Alex
> > > ------------------------------------
> > >
> > >
> > >
> > > miki3mikius wrote:
> > >
> > > > --- In xl7@y..., erik_magrini@B... wrote:
> > > >
> > > > thanks for your help! It was a grounding problem. I had the
> cabels
> > > > from my computer soundcard next to mp7 in the mixer and that
> > produced
> > > > the infamous hum. Still there is a very slight hum (higehr in
> > tune),
> > > > but thats tolerable. Btw can anyone tell me how these grounding
> > > > problems happen and what to do to avoid them? Still I would
> like
> > to
> > > > run both the emu and the computer through my mixer.
> > > > Michael
> > > >
> > > > > Does any of your other gear make a hum when connected to
> those
> > same
> > > > leads
> > > > > by any chance?   Not saying it's not your XL_7, just make
> sure
> > it's
> > > > not  a
> > > > > grounding issue first.  If you still have it, maybe pop open
> the
> > > > botom and
> > > > > make sure everything is screwed in tight?
> > > > >
> > > > > rEalm
> > > > >
> > > > >
> > > > >
> > > > >
> > > > > brand new machine with the hum. Not on the headphones but on
> the
> > > > main outs
> > > > > (not on the subs). Anyone any idear?
> > > >
> > > >
> > > > To unsubscribe from this group, send an email to:
> > > > xl7-unsubscribe@y...
> > > >
> > > >
> > > >
> > > > Your use of Yahoo! Groups is subject to
> > http://docs.yahoo.com/info/terms/
>
>
> To unsubscribe from this group, send an email to:
> xl7-unsubscribe@yahoogroups.com
>
>
>
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Re: [xl7] more cable talk

2002-04-26 by erik_magrini@Baxter.com

What type of effects unit is it?

rEalm



I do not have a hum,  The noise I am getting is that anoying hiss. 
It is mostly off my fx unit and I have always got this anoying side 
effect from all the fx units that I have ever owned no matter where 
I lived.  I feel at this point that it is sompthing that you just 
have to live with. 

Oh ya and I sold the mackie mixer for a alesis studio 12R for the 
size factor.  The Mackie was defenitly a nicer mixer but I am trying 
with all my might to get my setup as small as possible for doing 
live shows. 

Thanks again for the feedback.

Mike G.



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more cable talk

2002-04-26 by mikexl7

WOW thanks for all the feedback.  after reading all the posts i 
decided to chop all my cables down to as short as possable, man what 
a job.  As for power conditioners I am a little confused as to what 
they do.  I know that they regulate the basic line levle and prevent 
power surges and dips but can I expect installing one will reduce 
the levle of hiss?

I do not have a hum,  The noise I am getting is that anoying hiss.  
It is mostly off my fx unit and I have always got this anoying side 
effect from all the fx units that I have ever owned no matter where 
I lived.  I feel at this point that it is sompthing that you just 
have to live with.  

Oh ya and I sold the mackie mixer for a alesis studio 12R for the 
size factor.  The Mackie was defenitly a nicer mixer but I am trying 
with all my might to get my setup as small as possible for doing 
live shows.  

Thanks again for the feedback.

Mike G.

Re: more cable talk

2002-04-26 by mikexl7

It's a Digitech studio quad.  I think it is just a noisy box.  When 
I have it bypased it is very quite but what ever it is doing to 
generate alot of its FX create alot of noise.

Peace 

Mike g


--- In xl7@y..., erik_magrini@B... wrote:
> What type of effects unit is it?
> 
> rEalm
> 
> 
> 
> 
> Your use of Yahoo! Groups is subject to 
http://docs.yahoo.com/info/terms/

Re: [xl7] more cable talk

2002-04-28 by Gary Saville

Computer monitors are a large contributor to studio noise. If your studio is in the same room as a computer monitor, try turning it off, if it greatly reduces the noise in the studio, it's time to buy an LCD monitor, or a good quality sheilded monitor... The good news is the noise from a monitor will not show up in any recordings, it is just fucking with your speakers ie-magnetic problems with the two magnets..
Cheers.
Gary
ocylate@...

Re: [xl7] more cable talk

2002-04-30 by Gary Westwood

>From: Alex Strudley <Alexs@...>
>Reply-To: xl7@yahoogroups.com
>To: xl7@yahoogroups.com
>Subject: Re: [xl7] more cable talk
>Date: Thu, 25 Apr 2002 09:32:02 -0700
>
Buy a power conditioner!!!
There are NO alternatives!!!
It's not even a smart choice,it's a given...

g.


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