Adapting a microphone to remote phantom power

[Eeyore]

"Dave Plowman (News)" wrote:

David Nebenzahl <nobody@but.us.chickens> wrote:
On 4/10/2009 2:43 AM Dave Plowman (News) spake thus:

In article <49de8695$0$2712$822641b3@news.adtechcomputers.com>,
David Nebenzahl <nobody@but.us.chickens> wrote:

So I'm thinking I could modify the microphone to accept power from
the recorder, without modifying the recorder in any way. There are a
few things I don't know, however:

Phantom power - as regards mics - is only applicable to balanced mics
and inputs. A stereo balanced mic has five connections. Mono balanced
connectors are usually a 3 pin XLR, stereo 5 pin.

The DC is between both balanced audios and screen - the idea being
there is no potential difference across the audio allowing a non
phantom powered balance mic to be used on a phantom powered input.

You can feed DC to an unbalanced mic - but my guess is the mic has to
be designed for this.

Well, as I pointed out in a follow-up post above (don't know if you saw
it), the Sony Walkman in this case applies power (2.8V) across both
inputs at the microphone jack. The mike input uses just 3 connections.
They call it "Plug-in power", which may be Sony's own version of phantom
power. And yes, the voltage is present even if one uses a
non-phantom-powered mike; presumably, the voltage is low enough not to
damage any unpowered microphones. (In my case, the phantom power is just
wasted.)

But both inputs in this case are the 'hot' connections of a stereo input?

There are no 'versions' of phantom power - it's a universal standard.
Anything else would be a nonsense.

The current versions of professional phantom power are covered by IEC
standards. Your Sony mic does not comply to any of them.

Graham

 

[Eeyore]

David Nebenzahl wrote:

On 4/10/2009 11:12 AM Dave Plowman (News) spake thus:
David Nebenzahl <nobody@but.us.chickens> wrote:
On 4/10/2009 2:43 AM Dave Plowman (News) spake thus:
David Nebenzahl <nobody@but.us.chickens> wrote:

So I'm thinking I could modify the microphone to accept power from
the recorder, without modifying the recorder in any way. There are a
few things I don't know, however:

Phantom power - as regards mics - is only applicable to balanced mics
and inputs. A stereo balanced mic has five connections. Mono balanced
connectors are usually a 3 pin XLR, stereo 5 pin.

The DC is between both balanced audios and screen - the idea being
there is no potential difference across the audio allowing a non
phantom powered balance mic to be used on a phantom powered input.

You can feed DC to an unbalanced mic - but my guess is the mic has to
be designed for this.

Well, as I pointed out in a follow-up post above (don't know if you saw
it), the Sony Walkman in this case applies power (2.8V) across both
inputs at the microphone jack. The mike input uses just 3 connections.
They call it "Plug-in power", which may be Sony's own version of phantom
power. And yes, the voltage is present even if one uses a
non-phantom-powered mike; presumably, the voltage is low enough not to
damage any unpowered microphones. (In my case, the phantom power is just
wasted.)

But both inputs in this case are the 'hot' connections of a stereo input?

Yes. The 2.8V DC is carried on both mike inputs (+2.8V = L/R inputs,
with respect to common ground).

There are no 'versions' of phantom power - it's a universal standard.
Anything else would be a nonsense.

Apparently this disproves that theory. (I thought the standard for
phantom power was 48 volts.) Talk to Sony. (And remember that this is
"Plug-in power"(R)(TM), whatever that is.)

It's 'proprietary' not a standard.

Graham

 

[David Nebenzahl]

On 4/10/2009 10:13 PM Eeyore spake thus:

"Dave Plowman (News)" wrote:

David Nebenzahl <nobody@but.us.chickens> wrote:
On 4/10/2009 2:43 AM Dave Plowman (News) spake thus:

In article <49de8695$0$2712$822641b3@news.adtechcomputers.com>,
David Nebenzahl <nobody@but.us.chickens> wrote:

So I'm thinking I could modify the microphone to accept power from
the recorder, without modifying the recorder in any way. There are a
few things I don't know, however:

Phantom power - as regards mics - is only applicable to balanced mics
and inputs. A stereo balanced mic has five connections. Mono balanced
connectors are usually a 3 pin XLR, stereo 5 pin.

The DC is between both balanced audios and screen - the idea being
there is no potential difference across the audio allowing a non
phantom powered balance mic to be used on a phantom powered input.

You can feed DC to an unbalanced mic - but my guess is the mic has to
be designed for this.

Well, as I pointed out in a follow-up post above (don't know if you saw
it), the Sony Walkman in this case applies power (2.8V) across both
inputs at the microphone jack. The mike input uses just 3 connections.
They call it "Plug-in power", which may be Sony's own version of phantom
power. And yes, the voltage is present even if one uses a
non-phantom-powered mike; presumably, the voltage is low enough not to
damage any unpowered microphones. (In my case, the phantom power is just
wasted.)

But both inputs in this case are the 'hot' connections of a stereo input?

There are no 'versions' of phantom power - it's a universal standard.
Anything else would be a nonsense.

The current versions of professional phantom power are covered by IEC
standards. Your Sony mic does not comply to any of them.

To reply to you mis-attributed post (the person you responded to is not
the owner of the Sony mike): Well, duh. Who ever claimed that Sony's
"plug-in power" scheme was standard? In fact, I've been taking
particular pains to point out just the opposite.


--
Save the Planet
Kill Yourself

- motto of the Church of Euthanasia (http://www.churchofeuthanasia.org/)

 

[David Nebenzahl]

On 4/10/2009 10:12 PM Eeyore spake thus:

David Nebenzahl wrote:

Well, as I pointed out in a follow-up post above (don't know if you saw
it), the Sony Walkman in this case applies power (2.8V) across both
inputs at the microphone jack. The mike input uses just 3 connections.
They call it "Plug-in power", which may be Sony's own version of phantom
power. And yes, the voltage is present even if one uses a
non-phantom-powered mike; presumably, the voltage is low enough not to
damage any unpowered microphones. (In my case, the phantom power is just
wasted.)

Google computer mike / mic power and you'll see how it works. Very different
from your ECM.

How is "computer mike" power different from Sony's "plug-in power"? In
both cases the DC to power the mike's electronics is carried on the
signal line. Looks, sounds, smells like phantom power to me.

You're only confusing things by saying that it's "very different from
[my] ECM". THAT'S THE GODDAMN POINT I'VE BEEN TRYING TO MAKE! The mike I
have ignores the phantom power supplied by my recorder; I'm thinking of
ways to rectify that situation. That was the whole point of this exercise.

Got it now?


--
Save the Planet
Kill Yourself

- motto of the Church of Euthanasia (http://www.churchofeuthanasia.org/)

 

[Eeyore]

David Nebenzahl wrote:

Eeyore spake thus:
"Dave Plowman (News)" wrote:
David Nebenzahl <nobody@but.us.chickens> wrote:
On 4/10/2009 2:43 AM Dave Plowman (News) spake thus:
David Nebenzahl <nobody@but.us.chickens> wrote:

So I'm thinking I could modify the microphone to accept power from
the recorder, without modifying the recorder in any way. There are a
few things I don't know, however:

Phantom power - as regards mics - is only applicable to balanced mics
and inputs. A stereo balanced mic has five connections. Mono balanced
connectors are usually a 3 pin XLR, stereo 5 pin.

The DC is between both balanced audios and screen - the idea being
there is no potential difference across the audio allowing a non
phantom powered balance mic to be used on a phantom powered input.

You can feed DC to an unbalanced mic - but my guess is the mic has to
be designed for this.

Well, as I pointed out in a follow-up post above (don't know if you saw
it), the Sony Walkman in this case applies power (2.8V) across both
inputs at the microphone jack. The mike input uses just 3 connections.
They call it "Plug-in power", which may be Sony's own version of phantom
power. And yes, the voltage is present even if one uses a
non-phantom-powered mike; presumably, the voltage is low enough not to
damage any unpowered microphones. (In my case, the phantom power is just
wasted.)

But both inputs in this case are the 'hot' connections of a stereo input?

There are no 'versions' of phantom power - it's a universal standard.
Anything else would be a nonsense.

The current versions of professional phantom power are covered by IEC
standards. Your Sony mic does not comply to any of them.

To reply to you mis-attributed post (the person you responded to is not
the owner of the Sony mike):

I know. Maybe I should have said 'This Sony mic' ?

Well, duh. Who ever claimed that Sony's
"plug-in power" scheme was standard? In fact, I've been taking
particular pains to point out just the opposite.

Doesn't change the fact that a quality ( i.e. not a Duracell AA battery ) would
be your simplest fix.

Graham

 

[Dave Plowman (News)]

In article <49dfe391$0$2693$822641b3@news.adtechcomputers.com>,
David Nebenzahl <nobody@but.us.chickens> wrote:

Seems to be a problem here with what is phantom power. Perhaps you'd
read my earlier post on the subject. What you have is a form of line
powering - not the same as phantom powering.

Aaaaargh.

I've read all the posts here on the subject, as well as other material
out there in the greater world, and most people seem to agree that
phantom powering = line powering, always. (But not necessarily the
reverse, or obverse.)

To use another analogy, if phantom powering is a square and line
powering is a rectangle, one can say that all squares are rectangles,
but not all rectangles are squares.

Or something like that.

If you go to any supplier who knows about microphones - including a music
shop type place - and ask for a phantom powered mic you'll get a balanced
one which works with phantom power. And only phantom - not some other form
of line powering.

Would you go to a greengrocer and ask for apples and be happy to be given
oranges?

--
*Hard work pays off in the future. Laziness pays off now *

Dave Plowman dave@davenoise.co.uk London SW
To e-mail, change noise into sound.

 

[Dave Plowman (News)]

In article <49E026FE.5A3D5296@hotmail.com>,
Eeyore <rabbitsfriendsandrelations@hotmail.com> wrote:

"Dave Plowman (News)" wrote:

David Nebenzahl <nobody@but.us.chickens> wrote:
On 4/10/2009 2:43 AM Dave Plowman (News) spake thus:

In article <49de8695$0$2712$822641b3@news.adtechcomputers.com>,
David Nebenzahl <nobody@but.us.chickens> wrote:

Well, as I pointed out in a follow-up post above (don't know if you
saw it), the Sony Walkman in this case applies power (2.8V) across
both inputs at the microphone jack. The mike input uses just 3
connections. They call it "Plug-in power", which may be Sony's own
version of phantom power. And yes, the voltage is present even if
one uses a non-phantom-powered mike; presumably, the voltage is low
enough not to damage any unpowered microphones. (In my case, the
phantom power is just wasted.)

But both inputs in this case are the 'hot' connections of a stereo
input?

There are no 'versions' of phantom power - it's a universal standard.
Anything else would be a nonsense.

The current versions of professional phantom power are covered by IEC
standards. Your Sony mic does not comply to any of them.

Not my Sony mic but Mr Nebenzahl's one. ;-)

There's more to the IEC standard than just the parameters of phantom
power. After years of makers going their own way, conforming mics all have
the same output level and phase - as well as connectors. In other words
you can choose the mic best suited to an application and substitute it for
another conforming make and be certain it will work properly. With all the
various other methods of line powering this isn't so.

This doesn't mean all mics are the same. Horses for courses. But at least
you don't have to get the soldering iron out just to get some sort of
output.

Graham

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

Dave Plowman dave@davenoise.co.uk London SW
To e-mail, change noise into sound.

 

[Eeyore]

David Nebenzahl wrote:

On 4/10/2009 10:12 PM Eeyore spake thus:
David Nebenzahl wrote:

Well, as I pointed out in a follow-up post above (don't know if you saw
it), the Sony Walkman in this case applies power (2.8V) across both
inputs at the microphone jack. The mike input uses just 3 connections.
They call it "Plug-in power", which may be Sony's own version of phantom
power. And yes, the voltage is present even if one uses a
non-phantom-powered mike; presumably, the voltage is low enough not to
damage any unpowered microphones. (In my case, the phantom power is just
wasted.)

Google computer mike / mic power and you'll see how it works. Very different
from your ECM.

How is "computer mike" power different from Sony's "plug-in power"?

I'm suggesting it's probably the same thing.

In both cases the DC to power the mike's electronics is carried on the
signal line. Looks, sounds, smells like phantom power to me.

It's not TRUE phantom power. True phantom power requires a balanced signal. Read
it up. I've been trying to be practical and helpful and all you can do is bitch at
me. Go learn some FACTS !
http://en.wikipedia.org/wiki/Phantom_power

If you don't understand the above don't bother coming back to whine at others.

Graham

 

[Dave Plowman (News)]

In article <49e0411d$0$2707$822641b3@news.adtechcomputers.com>,
David Nebenzahl <nobody@but.us.chickens> wrote:

You're only confusing things by saying that it's "very different from
[my] ECM". THAT'S THE GODDAMN POINT I'VE BEEN TRYING TO MAKE! The mike I
have ignores the phantom power supplied by my recorder; I'm thinking of
ways to rectify that situation. That was the whole point of this
exercise.

I said much earlier on that the mic must be designed for line powering.
And presumably that Sony isn't. Since the machine supplies line powering
it's obviously designed to be used with another mic.

My feeling is there is a good reason. A couple of volts at low current
isn't going to power a good quality mike handling high SPL. It's really
restricted to lo-fi use. If you up the voltage by using an inverter inside
the mic you're then into higher current from the source which could cause
problems with the existing connectors - and the possibility of damage to a
moving coil mic used on that input.

--
*Life is hard; then you nap

Dave Plowman dave@davenoise.co.uk London SW
To e-mail, change noise into sound.

 

[David Nebenzahl]

On 4/11/2009 12:53 AM Dave Plowman (News) spake thus:

In article <49e0411d$0$2707$822641b3@news.adtechcomputers.com>,
David Nebenzahl <nobody@but.us.chickens> wrote:

You're only confusing things by saying that it's "very different from
[my] ECM". THAT'S THE GODDAMN POINT I'VE BEEN TRYING TO MAKE! The mike I
have ignores the phantom power supplied by my recorder; I'm thinking of
ways to rectify that situation. That was the whole point of this
exercise.

I said much earlier on that the mic must be designed for line powering.
And presumably that Sony isn't. Since the machine supplies line powering
it's obviously designed to be used with another mic.

Obviously, yes. And as I said, it was my mistake for not buying a
powered mike, instead of mine that requires a battery (plus remembering
to turn the damn thing on when recording). It does work fine with this mike.

My feeling is there is a good reason. A couple of volts at low current
isn't going to power a good quality mike handling high SPL. It's really
restricted to lo-fi use. If you up the voltage by using an inverter inside
the mic you're then into higher current from the source which could cause
problems with the existing connectors - and the possibility of damage to a
moving coil mic used on that input.

I'm not contemplating modifying the recorder to supply higher voltage;
I'm considering rewiring the mike to use the recorder's power rather
than the mike's battery. The mike already incorporates a DC-to-DC
converter (1.5 volts--> 4.8 volts).

And as I said before, presumably a moving-coil mike wouldn't be damaged
by the 2.8 volts the recorder is sending out.


--
Save the Planet
Kill Yourself

- motto of the Church of Euthanasia (http://www.churchofeuthanasia.org/)

 

[Eeyore]

David Nebenzahl wrote:

On 4/11/2009 12:53 AM Dave Plowman (News) spake thus:
David Nebenzahl <nobody@but.us.chickens> wrote:

You're only confusing things by saying that it's "very different from
[my] ECM". THAT'S THE GODDAMN POINT I'VE BEEN TRYING TO MAKE! The mike I
have ignores the phantom power supplied by my recorder; I'm thinking of
ways to rectify that situation. That was the whole point of this
exercise.

I said much earlier on that the mic must be designed for line powering.
And presumably that Sony isn't. Since the machine supplies line powering
it's obviously designed to be used with another mic.

Obviously, yes. And as I said, it was my mistake for not buying a
powered mike, instead of mine that requires a battery (plus remembering
to turn the damn thing on when recording). It does work fine with this mike.

Then you would need a phantom power supply.

My feeling is there is a good reason. A couple of volts at low current
isn't going to power a good quality mike handling high SPL. It's really
restricted to lo-fi use. If you up the voltage by using an inverter inside
the mic you're then into higher current from the source which could cause
problems with the existing connectors - and the possibility of damage to a
moving coil mic used on that input.

I'm not contemplating modifying the recorder to supply higher voltage;
I'm considering rewiring the mike to use the recorder's power rather
than the mike's battery. The mike already incorporates a DC-to-DC
converter (1.5 volts--> 4.8 volts).

And as I said before, presumably a moving-coil mike wouldn't be damaged
by the 2.8 volts the recorder is sending out.

At 1 mA or so probably not but it wouldn't work properly.

Graham

 

[Dave Plowman (News)]

In article <49e051e5$0$2711$822641b3@news.adtechcomputers.com>,
David Nebenzahl <nobody@but.us.chickens> wrote:

On 4/11/2009 12:53 AM Dave Plowman (News) spake thus:

In article <49e0411d$0$2707$822641b3@news.adtechcomputers.com>,
David Nebenzahl <nobody@but.us.chickens> wrote:

You're only confusing things by saying that it's "very different from
[my] ECM". THAT'S THE GODDAMN POINT I'VE BEEN TRYING TO MAKE! The
mike I have ignores the phantom power supplied by my recorder; I'm
thinking of ways to rectify that situation. That was the whole point
of this exercise.

I said much earlier on that the mic must be designed for line
powering. And presumably that Sony isn't. Since the machine supplies
line powering it's obviously designed to be used with another mic.

Obviously, yes. And as I said, it was my mistake for not buying a
powered mike, instead of mine that requires a battery (plus remembering
to turn the damn thing on when recording). It does work fine with this
mike.

It's almost certainly a better quality mic than the one designed for the
machine.

FWIW, the first battery powered mic I came across (in pro use) was the
Sony ECM50 - a small personal mic and the first anything like as small at
decent quality. Those were battery powered with no off on switch. Used a
mercury cell. Think it lasted at least a year.

My feeling is there is a good reason. A couple of volts at low current
isn't going to power a good quality mike handling high SPL. It's
really restricted to lo-fi use. If you up the voltage by using an
inverter inside the mic you're then into higher current from the
source which could cause problems with the existing connectors - and
the possibility of damage to a moving coil mic used on that input.

I'm not contemplating modifying the recorder to supply higher voltage;
I'm considering rewiring the mike to use the recorder's power rather
than the mike's battery. The mike already incorporates a DC-to-DC
converter (1.5 volts--> 4.8 volts).

And as I said before, presumably a moving-coil mike wouldn't be damaged
by the 2.8 volts the recorder is sending out.

It's *possible* some could be if you modify the current limiting resistors
to supply enough current for the convertor in your mic. And will that
convertor work properly off the (highish) impedance of that supply? It's a
bit of a minefield...

--
*It IS as bad as you think, and they ARE out to get you.

Dave Plowman dave@davenoise.co.uk London SW
To e-mail, change noise into sound.

 

[Michael A. Terrell]

"Dave Plowman (News)" wrote:

If you go to any supplier who knows about microphones - including a music
shop type place - and ask for a phantom powered mic you'll get a balanced
one which works with phantom power. And only phantom - not some other form
of line powering.

The last place I would go would be to a music store. You should see
the abortion a local 'Music Store' stuck our local Veteran's Park with.

Would you go to a greengrocer and ask for apples and be happy to be given
oranges?

Apparently they have been giving you crabapples, and you don't know
the difference.


--
And another motherboard bites the dust!

 

[David Nebenzahl]

On 4/11/2009 12:50 AM Eeyore spake thus:

David Nebenzahl wrote:

In both cases the DC to power the mike's electronics is carried on the
signal line. Looks, sounds, smells like phantom power to me.

It's not TRUE phantom power. True phantom power requires a balanced signal. Read
it up. I've been trying to be practical and helpful and all you can do is bitch at
me. Go learn some FACTS !
http://en.wikipedia.org/wiki/Phantom_power

Ah, the beauty of Wikipedia, the "encyclopedia" any junior-high-school
idiot (or electronics engineer with an axe to grind) can edit. Looking
at that article's revision history, one sees an awful lot of editing by
"anonymous IPs"; what are the chances that one of those is *you*, eh?

If you don't understand the above don't bother coming back to whine at others.

Ah, there it is: now you're stooping to throwing insults. By "you don't
understand", of course, you mean "you dare to disagree with my version
of things".

So let's see what others have to say about "phantom power", shall we? A
good starting point is to let Google sort it out: a simple search with
"definehantom power" yields the following:

o the Wikipedia article, which agrees with you
o http://www.dramatic.com.au/glossary/glossaryp_z.htm, which says
nothing about the balanced requirement (agrees w/me)
o http://www.learnchurchsound.com/definitions/acoustical-terms.php, ditto
o http://www.woken.com.tw/internal/service/glossary.php, agrees w/you
o
http://www.britishtheatreguide.info/otherresources/glossary/glossps.htm,
which agrees w/me (except for the odd assertion that "Phantom power can
only be used when the connectors are XLR" (???)

DISCLAIMER: I make no claim that any of the above "citations" are
authoritative (least of all the Wikipedia entry). My intention is to
show that, contrary to your (and Dave Plowman's) insistent assertions,
there seems to be no general agreement that the term "phantom power" is
as restrictive as you claim it is. (See Arfa Daily's postings on the
subject for corroboration.)


--
Save the Planet
Kill Yourself

- motto of the Church of Euthanasia (http://www.churchofeuthanasia.org/)

 

[Franc Zabkar]

On Sat, 11 Apr 2009 11:21:20 +1000, Franc Zabkar
<fzabkar@iinternode.on.net> put finger to keyboard and composed:

I suspect that the Walkman has an internal series resistor of around
1.8K and an O/C supply voltage of 5.0V.

WM-D6C Sony service manual:
http://esi.sony.ca/esupport/esupport/CD%20Rom%20Service%20Manual/042001/thiscd/sm-e/pa/995138511.pdf

Supplement:
http://esi.sony.ca/esupport/esupport/CD%20Rom%20Service%20Manual/042001/thiscd/sm-e/pa/995138581.pdf

The supply for each of the L and R microphone inputs is derived from a
buffered, zener regulated 2.6V source. The series resistor is 7.5K.
For comparison purposes, the condenser elements within Sony's ECM-737
mike are each powered from a 4.8V supply via 10K resistors.

I thought that the OP may be measuring the voltage while the mike was
connected, but it appears that 2.8V was the O/C voltage of the
Walkman.

This is the relevant section of the circuit:

2.6V |-- 7K5 --> L
IC201 | |
5.9V o--- R ---+---------+---- buffer -+- 1K ----+---|
| | | |
ZD --- 220uF 47uF --- |-- 7K5 --> R
HZ3ALL | --- ---
_|_ _|_ _|_
= = =

The HZ3ALL zener voltage rating is 2.5V (min) - 2.9V (max):
http://documentation.renesas.com/eng/products/diode/rej03g0183_hz_ll.pdf

- Franc Zabkar
--
Please remove one 'i' from my address when replying by email.

 

[David Nebenzahl]

On 4/11/2009 1:48 PM Franc Zabkar spake thus:

On Sat, 11 Apr 2009 11:21:20 +1000, Franc Zabkar
fzabkar@iinternode.on.net> put finger to keyboard and composed:

I suspect that the Walkman has an internal series resistor of around
1.8K and an O/C supply voltage of 5.0V.

WM-D6C Sony service manual:
http://esi.sony.ca/esupport/esupport/CD%20Rom%20Service%20Manual/042001/thiscd/sm-e/pa/995138511.pdf

Supplement:
http://esi.sony.ca/esupport/esupport/CD%20Rom%20Service%20Manual/042001/thiscd/sm-e/pa/995138581.pdf

Franc; after this post, I have to tell you this: I think you should get
out of this newsgroup. You don't belong here.

Why? Because you

o Post helpful answers to questions asked here
o Seem extremely competent and knowledgeable about electronics
o Don't engage in insulting those you might consider beneath your
respect, or who might disagree with you
o Come up with *really* useful sources of information.

In short, you're out of step with the program here.

All joking aside: many thanks for this very useful information.


--
Save the Planet
Kill Yourself

- motto of the Church of Euthanasia (http://www.churchofeuthanasia.org/)

 

[Dave Plowman (News)]

In article <zpednYM1J7TrFH3UnZ2dnUVZ_qWdnZ2d@earthlink.com>,
Michael A. Terrell <mike.terrell@earthlink.net> wrote:

If you go to any supplier who knows about microphones - including a
music shop type place - and ask for a phantom powered mic you'll get a
balanced one which works with phantom power. And only phantom - not
some other form of line powering.

The last place I would go would be to a music store. You should see
the abortion a local 'Music Store' stuck our local Veteran's Park with.

Which part of 'including' don't you understand?

Would you go to a greengrocer and ask for apples and be happy to be
given oranges?

Apparently they have been giving you crabapples, and you don't know
the difference.

You claim to be some sort of engineer but are happy to misuse a technical
term? Fine. You should be selling 'hi-fi' cables.

--
*Would a fly without wings be called a walk?

Dave Plowman dave@davenoise.co.uk London SW
To e-mail, change noise into sound.

 

[Michael A. Terrell]

"Dave Plowman (News)" wrote:

In article <zpednYM1J7TrFH3UnZ2dnUVZ_qWdnZ2d@earthlink.com>,
Michael A. Terrell <mike.terrell@earthlink.net> wrote:
If you go to any supplier who knows about microphones - including a
music shop type place - and ask for a phantom powered mic you'll get a
balanced one which works with phantom power. And only phantom - not
some other form of line powering.

They use whatever term they pick up, and it varies by region. The
proper name would included 'balanced', but doesn't becasue it wasn't
used by the devices they solte the name from. I'll bet you use 'DB-9
connectors', too.

The last place I would go would be to a music store. You should see
the abortion a local 'Music Store' stuck our local Veteran's Park with.

Which part of 'including' don't you understand?

What part of idiot don't you understand? I owned a commercail sound
& industrial electronics repair business for about 15 years. I never
advertised the business, and made the better part of my income cleanong
up the messes left behind by self proclaimed 'Audio Experts' and 'music
stores'. Word of mouth brought me customers from 100 miles away. The
business didn't even have a listed telephone number, since the shop work
was done in my home.

Would you go to a greengrocer and ask for apples and be happy to be
given oranges?

Apparently they have been giving you crabapples, and you don't know
the difference.

You claim to be some sort of engineer but are happy to misuse a technical
term? Fine. You should be selling 'hi-fi' cables.

That is something I've never done. Have you ever designed anything
Mil-spec, or built a commercial radio or TV station?





--
And another motherboard bites the dust!

 

[Dave Plowman (News)]

In article <t6OdnUZqsZPapn_UnZ2dnUVZ_tednZ2d@earthlink.com>,
Michael A. Terrell <mike.terrell@earthlink.net> wrote:

I owned a commercail sound & industrial electronics repair business for
about 15 years. I never advertised the business, and made the better
part of my income cleanong up the messes left behind by self proclaimed
'Audio Experts' and 'music stores'. Word of mouth brought me customers
from 100 miles away. The business didn't even have a listed telephone
number, since the shop work was done in my home.

Ah. That explains things. Perhaps if you actually used those mics in anger
you'd know what to ask for.

--
*If you try to fail, and succeed, which have you done?

Dave Plowman dave@davenoise.co.uk London SW
To e-mail, change noise into sound.

 

[Michael A. Terrell]

"Dave Plowman (News)" wrote:

In article <t6OdnUZqsZPapn_UnZ2dnUVZ_tednZ2d@earthlink.com>,
Michael A. Terrell <mike.terrell@earthlink.net> wrote:
I owned a commercail sound & industrial electronics repair business for
about 15 years. I never advertised the business, and made the better
part of my income cleanong up the messes left behind by self proclaimed
'Audio Experts' and 'music stores'. Word of mouth brought me customers
from 100 miles away. The business didn't even have a listed telephone
number, since the shop work was done in my home.

Ah. That explains things. Perhaps if you actually used those mics in anger
you'd know what to ask for.

The only electronics I used in anger was in the US military. The
anger was due to the twisted 'catch 22' regulations of zero allowed
downtime, and everything being 'depot level maintenance. If you had the
proper security clearance you would see how I handled the problem, and
the results of my decisions.

I know what to ask for, even when some fool has given it a stupid
name.


--
And another motherboard bites the dust!