Phantom power.
 

Anyone know of the simplest way to provide phantom power (the usual 48v)
to a mic amp that currently doesn't have it?
Obviously, an external plug in supply is one way, but wondered if there
was an IC or whatever that would produce it from the mic amp's existing
PS, which is a discrete +/-15v type.

--
*What happens if you get scared half to death twice? *

Dave Plowman London SW
To e-mail, change noise into sound.

Phantom power.
 

"Dave Plowman (News)" wrote in message
...
Anyone know of the simplest way to provide phantom power (the usual 48v)
to a mic amp that currently doesn't have it?
Obviously, an external plug in supply is one way, but wondered if there
was an IC or whatever that would produce it from the mic amp's existing
PS, which is a discrete +/-15v type.

https://www.thomann.de/fi/millenium_...antom_235771_3

At 29e it is not worth even heating up your soldering iron:-)
Powers two mics at 12V or 48V. Highly recommended.

Iain

Phantom power.
 

In article ,
Iain Churches wrote:

"Dave Plowman (News)" wrote in message
...
Anyone know of the simplest way to provide phantom power (the usual
48v) to a mic amp that currently doesn't have it? Obviously, an
external plug in supply is one way, but wondered if there was an IC or
whatever that would produce it from the mic amp's existing PS, which
is a discrete +/-15v type.

https://www.thomann.de/fi/millenium_...antom_235771_3

At 29e it is not worth even heating up your soldering iron:-)
Powers two mics at 12V or 48V. Highly recommended.

Iain, did you actually even read the question?

--
*If PROGRESS is for advancement, what does that make CONGRESS mean?

Dave Plowman London SW
To e-mail, change noise into sound.

Phantom power.
 

Dave Plowman (News) wrote:

Anyone know of the simplest way to provide phantom power (the usual 48v)
to a mic amp that currently doesn't have it?
Obviously, an external plug in supply is one way, but wondered if there
was an IC or whatever that would produce it from the mic amp's existing
PS, which is a discrete +/-15v type.



** Get a 1W isolated, DC/DC converter module - Farnell sell them.

You need one rated at 15V input with 15-0-15V output. Simply stack
the output on top of the +15 volt input and you have 45 to 48 V DC.

I have done this several times and it works a treat.



..... Phil

Phantom power.
 

"Dave Plowman (News)" wrote in message
...
In article ,
Iain Churches wrote:

"Dave Plowman (News)" wrote in message
...
Anyone know of the simplest way to provide phantom power (the usual
48v) to a mic amp that currently doesn't have it? Obviously, an
external plug in supply is one way, but wondered if there was an IC or
whatever that would produce it from the mic amp's existing PS, which
is a discrete +/-15v type.

https://www.thomann.de/fi/millenium_...antom_235771_3

At 29e it is not worth even heating up your soldering iron:-)
Powers two mics at 12V or 48V. Highly recommended.

Iain, did you actually even read the question?

Yes. Apologies. I am currently doing a project
on a Studer desk that has phantom on only 12
of the sixteen inputs. Modifying, or making additions
to, the Studer mic modules was not an option, so
we bought 2 of the Thomann phantom supplies.
I thought you had a similar situation.

Iain

Phantom power.
 

In article ,
Phil Allison wrote:
Dave Plowman (News) wrote:

Anyone know of the simplest way to provide phantom power (the usual 48v)
to a mic amp that currently doesn't have it?
Obviously, an external plug in supply is one way, but wondered if there
was an IC or whatever that would produce it from the mic amp's existing
PS, which is a discrete +/-15v type.



** Get a 1W isolated, DC/DC converter module - Farnell sell them.

You need one rated at 15V input with 15-0-15V output. Simply stack
the output on top of the +15 volt input and you have 45 to 48 V DC.

I have done this several times and it works a treat.


Thanks, Phil. Knew someone would understand the question. It never
occurred to me to do it that way.

--
*IF A TURTLE DOESN'T HAVE A SHELL, IS HE HOMELESS OR NAKED?

Dave Plowman London SW
To e-mail, change noise into sound.

Phantom power.
 

In article ,
Iain Churches wrote:
Iain, did you actually even read the question?

Yes. Apologies. I am currently doing a project
on a Studer desk that has phantom on only 12
of the sixteen inputs. Modifying, or making additions
to, the Studer mic modules was not an option, so
we bought 2 of the Thomann phantom supplies.
I thought you had a similar situation.

Interesting. Don't think I've ever seen a mixer with only some of the mic
amps having phantom. It's not as if it would save much cost in production.

--
*HOW IS IT POSSIBLE TO HAVE A CIVIL WAR?

Dave Plowman London SW
To e-mail, change noise into sound.

Phantom power.
 

"Dave Plowman (News)" wrote in message
...
In article ,
Iain Churches wrote:
Iain, did you actually even read the question?

Yes. Apologies. I am currently doing a project
on a Studer desk that has phantom on only 12
of the sixteen inputs. Modifying, or making additions
to, the Studer mic modules was not an option, so
we bought 2 of the Thomann phantom supplies.
I thought you had a similar situation.

Interesting. Don't think I've ever seen a mixer with only some of the mic
amps having phantom. It's not as if it would save much cost in production.

No. It would not have saved anything.
But it was ordered like that, as a custom console, by NDR.
It has some very interestiing and useful features
such as group correlation which are not often seen.

Iain

Phantom power.
 

In article ,
Iain Churches wrote:

"Dave Plowman (News)" wrote in message
...
In article ,
Iain Churches wrote:
Iain, did you actually even read the question?

Yes. Apologies. I am currently doing a project
on a Studer desk that has phantom on only 12
of the sixteen inputs. Modifying, or making additions
to, the Studer mic modules was not an option, so
we bought 2 of the Thomann phantom supplies.
I thought you had a similar situation.

Interesting. Don't think I've ever seen a mixer with only some of the
mic amps having phantom. It's not as if it would save much cost in
production.

No. It would not have saved anything.
But it was ordered like that, as a custom console, by NDR.
It has some very interestiing and useful features
such as group correlation which are not often seen.

What do you mean by 'group correlation' in practice?

--
*Some days we are the flies; some days we are the windscreen.*

Dave Plowman London SW
To e-mail, change noise into sound.

Phantom power.
 

"Dave Plowman (News)" wrote in message
...
In article ,
Iain Churches wrote:

"Dave Plowman (News)" wrote in message
...
In article ,
Iain Churches wrote:
Iain, did you actually even read the question?

Yes. Apologies. I am currently doing a project
on a Studer desk that has phantom on only 12
of the sixteen inputs. Modifying, or making additions
to, the Studer mic modules was not an option, so
we bought 2 of the Thomann phantom supplies.
I thought you had a similar situation.

Interesting. Don't think I've ever seen a mixer with only some of the
mic amps having phantom. It's not as if it would save much cost in
production.

No. It would not have saved anything.
But it was ordered like that, as a custom console, by NDR.
It has some very interestiing and useful features
such as group correlation which are not often seen.

What do you mean by 'group correlation' in practice?


One can assign two or more channels, panned as required
across up to twelve sub-groups. Each subgroup has a
correlation meter similar to this one from an SSL
console.

http://www.kolumbus.fi/iain.churches...ationMeter.jpg


Very useful for strings, drum overheads, and of course
anything double-tracked.

This is a much more compact solution than having
twelve vector-scopes, or patching a goniometer across
from the main outputs.

I forgot to mention that on this console, mic channels
13-16 do not even have a "Phantom On" indicator as
the other twelve have, so it was obviously specified
like this. Perhaps channels 13-16 were used
for line level feeds from another control room.

Iain