Sign in with
Sign up | Sign in
Your question

How to connect a preamp with XLR out to TRS in?

Last response: in Home Audio
Share
Anonymous
March 15, 2005 9:04:48 PM

Archived from groups: rec.audio.pro (More info?)

How would you connect a preamp that only has an XLR output to an
interface that doesn't have any line level XLR inputs? Would you buy a
XLR to TRS cable? Would that distort the sound a bit?

For example, if you have an Avalon 737SP and a Digi 002 rack, what
would you do to connect the Avalon to the Digi 002?

I have a Presonus Eureka right now with an Audiophile 2496 soundcard.
The soundcard has S/PDIF connectors but I would need to buy an ADAT
card for the Presonus to connect it like that. Right now I use a little
adapter that goes into the TRS output in the the Eureka and gives me an
RCA connection and I put the RCA cable into my soundcard recording the
sound in mono.

I'm thinking about moving to the Protools world and need some help on
how I would connect it, and is Windows XP recommended, or should I just
stick with my nice little Adobe Audition setup.

So the real question is, should I just buy a card for my Eureka and
hook it up with the S/PDIF in my soundcard? Or should I try going into
the Protools world? Or should I just leave everything alone and use the
rca cables with my Eureka as I'm doing now?

Oh, and how do you get sound from a preamp that has only XLR out to an
interface that has only 1/4" inputs?

Thanks.

More about : connect preamp xlr trs

March 15, 2005 11:19:52 PM

Archived from groups: rec.audio.pro (More info?)

www.HassanAnsari.com - Writer / Singer / Rapper / Producer wrote:
> How would you connect a preamp that only has an XLR output to an
> interface that doesn't have any line level XLR inputs? Would you buy a
> XLR to TRS cable? Would that distort the sound a bit?
snip
> Oh, and how do you get sound from a preamp that has only XLR out to an
> interface that has only 1/4" inputs?

You would use an XLR female to 1/4"-TRS male cable. There is no signal
loss, distortion, or anything. It's just a difference in connection
connection. No big deal.

--
Eric

Practice Your Mixing Skills
www.Raw-Tracks.com
www.Mad-Host.com
Related resources
March 16, 2005 8:29:25 AM

Archived from groups: rec.audio.pro (More info?)

After researching it in the IEEE archives, I discovered that when going
from XLR balanced to an unbalanced input, there is actually no accepted
standard as to whether or not pin 3 of the XLR (cold lead) should be
grounded to the shield. With some equipment, such a
balanced-to-unbalanced line won't work if pin 3 is grounded, and with
other equipment it will. Same with NOT grounding pin 3: will work with
some equipment but not others. You need to try it both ways.
March 16, 2005 8:33:53 AM

Archived from groups: rec.audio.pro (More info?)

In othe words,

Pin 1 of the XLR = ground/shield
Pin 2 of the XLR = hot (+ve) (to tip of TR plug)
Pin 3 of the XLR = cold (-ve) (to sleeve of TR plug)

MAYBE connect pin 3 of XLR to pin 1
Anonymous
March 16, 2005 10:51:42 AM

Archived from groups: rec.audio.pro (More info?)

"www.HassanAnsari.com - Writer / Singer / Rapper / Producer"
<AbnoticCo@aol.com> wrote in message
news:1110938688.560590.58430@o13g2000cwo.googlegroups.com...
> How would you connect a preamp that only has an XLR output to an
> interface that doesn't have any line level XLR inputs? Would you buy a
> XLR to TRS cable?

If the interface has TRS jacks, yes.

> Would that distort the sound a bit?

No, not if the interface has TRS jacks. If it has only TS (unbalanced jacks)
then, depending on the preamp's design, you may want to rig up a special
cable.

Peace,
Paul
Anonymous
March 16, 2005 11:59:01 AM

Archived from groups: rec.audio.pro (More info?)

In article <1110938688.560590.58430@o13g2000cwo.googlegroups.com> AbnoticCo@aol.com writes:

> How would you connect a preamp that only has an XLR output to an
> interface that doesn't have any line level XLR inputs? Would you buy a
> XLR to TRS cable?

Yes.

> Would that distort the sound a bit?

It depends on how the output and the input are designed, and how the
cable is built.

> For example, if you have an Avalon 737SP and a Digi 002 rack, what
> would you do to connect the Avalon to the Digi 002?

Buy an XLR to TRS cable.

> I'm thinking about moving to the Protools world and need some help on
> how I would connect it

There are a few different cases (fortunately not an infinite number).
But unless you can ask someone who has (and understands) the same
thing you have, you can rarely find out for sure what wiring
configuration will work. You need to just try something, see what you
get, and if it's not right, change it. Anything can be connected to
anything as long as the levels match reasonably closely and there
isn't excessive loading of the source device by the destination
device. Designations such as "high impedance" are in most cases
irrelevant when connecting line level devices. And generalizations
such as unbalanced connections (RCA or 1/4" jacks) are high impedance
and XLRs are low impedance are just plain wrong.

> and is Windows XP recommended, or should I just
> stick with my nice little Adobe Audition setup.

If it ain't broke, don't fix it. If it's a "nice" setup, it ain't
broke.

> So the real question is, should I just buy a card for my Eureka and
> hook it up with the S/PDIF in my soundcard? Or should I try going into
> the Protools world?

I don't know. Do you like salmon, or would you rather have a beer?

> Or should I just leave everything alone and use the
> rca cables with my Eureka as I'm doing now?

Yes. And when you know enough to know when (if every) you have a
problem, you'll be better equipped to either solve it yourself or ask
a more meaningful question.

> Oh, and how do you get sound from a preamp that has only XLR out to an
> interface that has only 1/4" inputs?

But an XLR-to-1/4" cable.

--
I'm really Mike Rivers (mrivers@d-and-d.com)
However, until the spam goes away or Hell freezes over,
lots of IP addresses are blocked from this system. If
you e-mail me and it bounces, use your secret decoder ring
and reach me here: double-m-eleven-double-zero at yahoo
Anonymous
March 16, 2005 3:19:59 PM

Archived from groups: rec.audio.pro (More info?)

Hassan, there is no one standard method for connecting a balanced
output to an unbalanced input, and given the diversity of the circuitry
that exists, there can be no one standard method that is safe and gives
the best result in all cases.

You must take into account the type of output circuit in the source
component. It's best to read and follow the instructions in the manual,
and wire accordingly.
Anonymous
March 16, 2005 7:20:11 PM

Archived from groups: rec.audio.pro (More info?)

"www.HassanAnsari.com - Writer / Singer / Rapper / Producer"

<AbnoticCo@aol.com> wrote in message
news:1110938688.560590.58430@o13g2000cwo.googlegroups.com

> How would you connect a preamp that only has an XLR output to an
> interface that doesn't have any line level XLR inputs?

My preference would be to get an adaptor cable. Connector adaptors would be
my second choice because they can put more mechanical strain on the
connectors.

> Would you buy a XLR to TRS cable?

Been there, done that although I usually made said cable up myself.

>Would that distort the sound a bit?

Not in the least!

> For example, if you have an Avalon 737SP and a Digi 002 rack, what
> would you do to connect the Avalon to the Digi 002?

A cable that was long enough and had the right connectors. ;-)

> I have a Presonus Eureka right now with an Audiophile 2496 soundcard.

> The soundcard has S/PDIF connectors but I would need to buy an ADAT
> card for the Presonus to connect it like that. Right now I use a
> little adapter that goes into the TRS output in the the Eureka and
> gives me an RCA connection and I put the RCA cable into my soundcard
> recording the sound in mono.

This could be about as good as it gets.

> I'm thinking about moving to the Protools world and need some help on
> how I would connect it, and is Windows XP recommended, or should I
> just stick with my nice little Adobe Audition setup.

I'm fine with Audition. Certainly, there are no sound quality issues with
it.

> So the real question is, should I just buy a card for my Eureka and
> hook it up with the S/PDIF in my soundcard? Or should I try going into
> the Protools world? Or should I just leave everything alone and use
> the rca cables with my Eureka as I'm doing now?

Unless you've got some problems with audible hum and noise, what you have
could be about as good as it gets.

> Oh, and how do you get sound from a preamp that has only XLR out to an
> interface that has only 1/4" inputs?

Usually, getting a cable with the right connectors on each end does the job.
;-)

There's a standard reference that shows the best way to handle all sorts of
situations like this, which can be found at http://www.rane.com/note110.html
.. It's on the conservative side, which I think is exactly right. IOW, there
are sleezier alternatives that might work as well as what they say, but then
again maybe not in every circumstance.

I think a little common sense goes a long ways with questions like this. If
you hook things together you generally get:


(1) Good sound
(2) Less sound than you expected, but still its all good.
(3) No sound at all.
(4) Sound with audible hum and/or noise.
(5) Really badly distorted sound.
(6) Something is subtly wrong with the sound.

Item one is the usual case. Item 2 is disappointing, but its one of those
things you can get used to. Items 3-5 are pretty obvious and beg to be dealt
with. Item 6 is pretty rare.
Anonymous
March 17, 2005 9:01:37 AM

Archived from groups: rec.audio.pro (More info?)

www.HassanAnsari.com - Writer / Singer / Rapper / Producer wrote:
> How would you connect a preamp that only has an XLR output to an
> interface that doesn't have any line level XLR inputs? Would you buy
a
> XLR to TRS cable? Would that distort the sound a bit?

The 1/4" TRS tp XLR (both male and female) are about
the most common cables in my room. No distortion that
wasn't already there.

> For example, if you have an Avalon 737SP and a Digi 002 rack, what
> would you do to connect the Avalon to the Digi 002?
>
> I have a Presonus Eureka right now with an Audiophile 2496 soundcard.
> The soundcard has S/PDIF connectors but I would need to buy an ADAT
> card for the Presonus to connect it like that. Right now I use a
little
> adapter that goes into the TRS output in the the Eureka and gives me
an
> RCA connection and I put the RCA cable into my soundcard recording
the
> sound in mono.

The PreSonus option card for Eureka is sync and SPDIF,
not ADAT. Since the 2496 accepts SPDIF that would work.
But I doubt you would hear any (noticable) improvement
over the converters in the 2496. The shortcoming of the
2496 is not it's sound quality, it's that it lacks
balanced I/O.
The Eureka has both 1/4" and XLR outs. Since it's
reasonable to assume that someone might use a 'guitar'
cord coming out of the unit, the 1/4" was designed to
allow both balanced or unbalanced connection. You can
get a decent quality 1/4" (TS) to RCA cable and avoid
any adapters.
You can also use the insert send on the preamp and
bypass some of the circuitry you may not be using.

> I'm thinking about moving to the Protools world and need some help on
> how I would connect it, and is Windows XP recommended, or should I
just
> stick with my nice little Adobe Audition setup.
>
> So the real question is, should I just buy a card for my Eureka and
> hook it up with the S/PDIF in my soundcard? Or should I try going
into
> the Protools world? Or should I just leave everything alone and use
the
> rca cables with my Eureka as I'm doing now?

Changing software will not solve any hardware issues
or vice-versa. Audition has some advantages over PT.
Have you upgraded to 1.5 ?
Just get a good 1/4" to RCA cable and eliminate the
adapter, and you are set with what you have.

> Oh, and how do you get sound from a preamp that has only XLR out to
an
> interface that has only 1/4" inputs?

You can never have enough cables and adapters.

good luck
rd
Anonymous
March 23, 2005 9:58:58 PM

Archived from groups: rec.audio.pro (More info?)

Thanks, I think I'll just get a new cable so the adapter is out of the
way and stick with this setup. I like the sound, but people using the
expensive stuff usually intimidate me a little...that's why I keep
having 2nd thoughts about upgrading the whole setup. I haven't heard an
Avalon 737SP / Digi002 combination that sounds worst than my
setup...but I have heard better...not a lot better...but better. But
then again, I guess spending multiple grands just to improve the sound
a little is not worth it. Thanks people.
Anonymous
March 23, 2005 10:07:49 PM

Archived from groups: rec.audio.pro (More info?)

By the way, here's a little sample of my sound right now:

http://www.unparagoned.net/snippet.mp3

Would love to get some feedback. It's 256kbps mp3...shouldn't be too
bad.
!