Mic Phase Reverse Adapter

[Paul G. Fitzgerald]

My mixer doesn't have any phase switches, so I'd like to make an adapter to
reverse the phase of a mic. I'm thinking about using a short piece of mic
cable, a male XLR plug, and a female XLR plug.

If I wire pin 1 female to pin 1 male, pin 2 female to pin 3 male, and pin 3
female to pin 2 male, will this accomplish what I need?

Thanks,

Paul

[Rick Ruskin]

On Sun, 7 Mar 2004 19:13:51 -0600, Paul G. Fitzgerald
> wrote:

>My mixer doesn't have any phase switches, so I'd like to make an adapter to
>reverse the phase of a mic. I'm thinking about using a short piece of mic
>cable, a male XLR plug, and a female XLR plug.
>
>If I wire pin 1 female to pin 1 male, pin 2 female to pin 3 male, and pin 3
>female to pin 2 male, will this accomplish what I need?
>
>Thanks,
>
>Paul


yes


Rick Ruskin
Lion Dog Music - Seattle WA
http://liondogmusic.com

[Chris Hornbeck]

On Sun, 7 Mar 2004 19:13:51 -0600, Paul G. Fitzgerald
> wrote:

>My mixer doesn't have any phase switches, so I'd like to make an adapter to
>reverse the phase of a mic. I'm thinking about using a short piece of mic
>cable, a male XLR plug, and a female XLR plug.
>
>If I wire pin 1 female to pin 1 male, pin 2 female to pin 3 male, and pin 3
>female to pin 2 male, will this accomplish what I need?

Yes. Switchcraft makes a four inch tube with male and female
ends that you might like. About $12 at MCM.

Properly speaking it's polarity, rather than phase, but
everybody says it wrong, so I should just shut up.

Chris Hornbeck

"Second star to the right,
Then straight on 'til morning."

[Arny Krueger]

"Paul G. Fitzgerald" > wrote in message
news:2004030719135136480%pgf@nospampgforg

> My mixer doesn't have any phase switches, so I'd like to make an
> adapter to reverse the phase of a mic. I'm thinking about using a
> short piece of mic cable, a male XLR plug, and a female XLR plug.

> If I wire pin 1 female to pin 1 male, pin 2 female to pin 3 male, and
> pin 3 female to pin 2 male, will this accomplish what I need?


Rght. I had an emrgency need and built myself a short jumper cable.

Later on I found out that Hosa makes them and if you shop around they are
about $7 each.

http://www.hosatech.com/hosa/products/GXX-195.html

I figured that the usual Hosa bad cable mojo didn't apply because there is
no cable in this product.

I bought a few because it was a cheap way to buy a M-F XLR case for building
attenuators, and the like.

http://www.midi-classics.com/c/c4293.htm

[Ray Thomas]

So if I want to use my Mackie 1402 mixer to create/decode a Mid Side stereo
mix, how do I take out the fig 8 (side) component from mic preamp 2 via the
insert facility and polarity/phase invert it before patching into mic input
3 (assuming mic input 1 is used for mid mic) ?
Thanks for your guidance,
Ray
----------------------------------------------------------------------------
-
"Arny Krueger" > wrote in message
...
> "Paul G. Fitzgerald" > wrote in message
> news:2004030719135136480%pgf@nospampgforg
>
> > My mixer doesn't have any phase switches, so I'd like to make an
> > adapter to reverse the phase of a mic. I'm thinking about using a
> > short piece of mic cable, a male XLR plug, and a female XLR plug.
>
> > If I wire pin 1 female to pin 1 male, pin 2 female to pin 3 male, and
> > pin 3 female to pin 2 male, will this accomplish what I need?
>
>
> Rght. I had an emrgency need and built myself a short jumper cable.
>
> Later on I found out that Hosa makes them and if you shop around they are
> about $7 each.
>
> http://www.hosatech.com/hosa/products/GXX-195.html
>
> I figured that the usual Hosa bad cable mojo didn't apply because there is
> no cable in this product.
>
> I bought a few because it was a cheap way to buy a M-F XLR case for
building
> attenuators, and the like.
>
> http://www.midi-classics.com/c/c4293.htm
>
>

[Romeo Rondeau]

> I figured that the usual Hosa bad cable mojo didn't apply because there is
> no cable in this product.

Hosa has a custom shop and it's not too shabby.

[Sean Conolly]

"Arny Krueger" > wrote in message
...
> "Paul G. Fitzgerald" > wrote in message
> news:2004030719135136480%pgf@nospampgforg
>
> > My mixer doesn't have any phase switches, so I'd like to make an
> > adapter to reverse the phase of a mic. I'm thinking about using a
> > short piece of mic cable, a male XLR plug, and a female XLR plug.
>
> > If I wire pin 1 female to pin 1 male, pin 2 female to pin 3 male, and
> > pin 3 female to pin 2 male, will this accomplish what I need?
>
>
> Rght. I had an emrgency need and built myself a short jumper cable.
>
> Later on I found out that Hosa makes them and if you shop around they are
> about $7 each.
>
> http://www.hosatech.com/hosa/products/GXX-195.html
>
> I figured that the usual Hosa bad cable mojo didn't apply because there is
> no cable in this product.
>
> I bought a few because it was a cheap way to buy a M-F XLR case for
building
> attenuators, and the like.
>
> http://www.midi-classics.com/c/c4293.htm


OK, I have to ask - does anyone make one of these that will work with
phantom power?

Sean

[Eberhard Sengpiel]

Sean Conolly > wrote:
> OK, I have to ask - does anyone make one of these that
> will work with phantom power?


Hi Sean,

all those XLR phase reverse adapters will work
with the usual 48 volts phantom power.
No problems.

Eberhard Sengpiel
German forum for microphone recordigs
and sound studio techniques
http://www.semgpielaudio.com

[Arny Krueger]

"Sean Conolly" > wrote in message

> "Arny Krueger" > wrote in message
> ...
>> "Paul G. Fitzgerald" > wrote in message
>> news:2004030719135136480%pgf@nospampgforg
>>
>>> My mixer doesn't have any phase switches, so I'd like to make an
>>> adapter to reverse the phase of a mic. I'm thinking about using a
>>> short piece of mic cable, a male XLR plug, and a female XLR plug.
>>
>>> If I wire pin 1 female to pin 1 male, pin 2 female to pin 3 male,
>>> and pin 3 female to pin 2 male, will this accomplish what I need?
>>
>>
>> Rght. I had an emrgency need and built myself a short jumper cable.
>>
>> Later on I found out that Hosa makes them and if you shop around
>> they are about $7 each.
>>
>> http://www.hosatech.com/hosa/products/GXX-195.html
>>
>> I figured that the usual Hosa bad cable mojo didn't apply because
>> there is no cable in this product.
>>
>> I bought a few because it was a cheap way to buy a M-F XLR case for
>> building attenuators, and the like.
>>
>> http://www.midi-classics.com/c/c4293.htm
>
>
> OK, I have to ask - does anyone make one of these that will work with
> phantom power?

AFAIK, they all work with phantom power. A polarity invetor reverses the
connections to two lines that both have the identical same phanom power
source aplied to them them by identical means. From the standpoint of
phantom power, they are identical, so reversing them has no harmful effects.

[Arny Krueger]

"Ray Thomas" > wrote in message


> So if I want to use my Mackie 1402 mixer to create/decode a Mid Side
> stereo mix, how do I take out the fig 8 (side) component from mic
> preamp 2 via the insert facility and polarity/phase invert it before
> patching into mic input 3 (assuming mic input 1 is used for mid mic) ?

First off, an insert jack is at line level, so you don't ever apply it to a
mic input. Secondly, an insert jack on a Mackie console is an unbalanced
input and output, so any polarity changing has to be done at the following
input jack. The good news is that Mackie line inputs are balanced.

Seems like an application for a specially-made cable, because if you do it
with standard adaptors, you end up with a zoo.

"The zoo" made with standard cables.

(1) 1/4 tip/sleeve to XLR male cable. Must be inserted only partially into
console insert jack to avoid breaking the signal connection to the channel
strip. Insert slowly until first click is felt.

(2) XLR polarity inverter

(3) 1/4" XLR female to 1/4" TRS adapter.

The custom cable:

One end is a TRS plug attached to a short piece of ordinary shielded cable,
insulated conductor(s) soldered to both tip and ring which are of course
soldered together. Fully insert this plug into console input 2 insert jack.
If cable has two insulated conductors, both conductors are connected
together..

The other end is a TRS plug with the cable insulated conductor(s) connected
to the ring. The tip is connected to nothing. Fully insert this plug into
console input 3 line input jack.

[Mark Tranchant]

Sean Conolly wrote:

> OK, I have to ask - does anyone make one of these that will work with
> phantom power?

The 48V is applied equally to pins 2 and 3, so swapping them will make no
difference. So long as 1->1, you're safe.

--
Mark.
http://tranchant.plus.com/

[Mike Rivers]

In article <2004030719135136480%pgf@nospampgforg> writes:

> If I wire pin 1 female to pin 1 male, pin 2 female to pin 3 male, and pin 3
> female to pin 2 male, will this accomplish what I need?

Yes. Don't forget to mark what it is.

--
I'm really Mike Rivers )
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

[Sean Conolly]

"Mark Tranchant" > wrote in message
...
> Sean Conolly wrote:
>
> > OK, I have to ask - does anyone make one of these that will work with
> > phantom power?
>
> The 48V is applied equally to pins 2 and 3, so swapping them will make no
> difference. So long as 1->1, you're safe.

OK, for some dumb reason I thought phantom power was only applied to one
pin. D'OH!

Sean