[[email protected]]

Hey,

I have a mic rated 310 ohms and a preamp that goes from 150 - 3K ohms.
should i match the impedance on the preamp to the mic? i've heard
conflicting stories about that i should match it and that i should max
out the preamp impedance.

what do you guys think? i'm not an electrical engineer, so i don't
konw.

[Eeyore]

wrote:

Hey,

I have a mic rated 310 ohms and a preamp that goes from 150 - 3K ohms.
should i match the impedance on the preamp to the mic? i've heard
conflicting stories about that i should match it and that i should max
out the preamp impedance.

what do you guys think? i'm not an electrical engineer, so i don't
konw.

It's not a question of what we *think*, it's what normal practice is.
Microphones are almost invariably recommended to be loaded with up to10 times
their own impedance. This gives good *voltage* transfer and hence usually a
better signal to noise ratio than 'matching' with modern mic pres.

A common input impedance for mic pres these days is 2kOhms

Some mics do however 'sound different' when loaded with less. The SM57 for
example is said to sound sweetest when loaded with about 600 ohms.

Graham

[Arny Krueger]

wrote in message
ups.com
Hey,

I have a mic rated 310 ohms and a preamp that goes from
150 - 3K ohms. should i match the impedance on the preamp
to the mic? i've heard conflicting stories about that i
should match it and that i should max out the preamp
impedance.

what do you guys think? i'm not an electrical engineer,
so i don't konw.

If you want to let your ears be your guide, just make an XLR adaptor
composed of a male and female jack connected together, with a 300 ohm
resistor connected between pins 2 and 3 inside one of the connectors. It
could be as simple as a 3' XLR jumper with the resistor added. Parts cost
under $10 and all parts available at Radio Shack. Plug it in, and listen.
Plug it out and listen.

[bassett]

"Arny Krueger" wrote in message
...
wrote in message
ups.com
Hey,

I have a mic rated 310 ohms and a preamp that goes from
150 - 3K ohms. should i match the impedance on the preamp
to the mic? i've heard conflicting stories about that i
should match it and that i should max out the preamp
impedance.

what do you guys think? i'm not an electrical engineer,
so i don't konw.

If you want to let your ears be your guide, just make an XLR adaptor
composed of a male and female jack connected together, with a 300 ohm
resistor connected between pins 2 and 3 inside one of the connectors. It
could be as simple as a 3' XLR jumper with the resistor added. Parts cost
under $10 and all parts available at Radio Shack. Plug it in, and listen.
Plug it out and listen.

This is good technical stuff, from the great unwashed, We should all
be so-so grateful he bothers to contribute, You can't get info like
this just anywhere

We've all learned today, how to plug something in,, Then we have
to master plugging it "out" . or is that a very precise way of saying
unplug the thing.
How fortunate we all are, NOT.

He got confused the other week, got a new job as a " stop // Go "
man,
only trouble was the pressure got to him, and he said ''Go'' when he
should have said "Stop", and some lucky **** run over the prick.

bassett

[Eeyore]

bassett wrote:

This is good technical stuff, from the great unwashed, We should all
be so-so grateful he bothers to contribute, You can't get info like
this just anywhere

Good Lord you're an idiot. Grade One Plus.

Graham

[bassett]

"Eeyore" wrote in message
...


bassett wrote:

This is good technical stuff, from the great unwashed, We should
all
be so-so grateful he bothers to contribute, You can't get info like
this just anywhere

Good Lord you're an idiot. Grade One Plus.

Graham


Thanks very much,, but if that is the case, what does that make you for
reading the rubbish I write.
bassett

[Arny Krueger]

"Eeyore" wrote in
message
bassett wrote:

This is good technical stuff, from the great
unwashed, We should all be so-so grateful he bothers
to contribute, You can't get info like this just
anywhere

Good Lord you're an idiot. Grade One Plus.

You forgot the hysterical, post-meltdown parts. ;-)