Mic not working on my MBP

flipkid1021

macrumors newbie
Original poster
Jul 9, 2007
18
0
Chicagoland
I bought a laptop headset from logitech and when i used the headset to plug it into the port it wont play from the mic on the headset every time i try talking through the mic it only receives through the built in microphone on my MBP. how do i make it so my comp will make it come from my headset microphone?
 

gr8tfly

macrumors 603
Oct 29, 2006
5,298
48
~119W 34N
"System Preferences -> Sound > Input" will let you select the input device.

If it's a USB headset, you probably would need to select it for output, as well.
 

flipkid1021

macrumors newbie
Original poster
Jul 9, 2007
18
0
Chicagoland
When i go to sound input and i plug in my headset the sound volume doesn't even move its like nothing is in it. and i know its not the headset it works on my desktop. where as when i test my built in mic the volume test sensor thing moves
 

flyinmac

macrumors 68040
Sep 2, 2006
3,576
2,410
United States
I bought a laptop headset from logitech and when i used the headset to plug it into the port it wont play from the mic on the headset every time i try talking through the mic it only receives through the built in microphone on my MBP. how do i make it so my comp will make it come from my headset microphone?
If you are using a standard mini-stereo plug for the microphone, and it is plugging into the line-in port on your Mac, then it is not going to work.

The line-in port is specifically a "line-in" port. It accepts "line level" audio inputs only.

Such inputs would be from the back of your component stereo's tape deck, a component type (as in not built-in) stereo CD-Player's RCA jacks, etc.

Record Players / Turn-Tables and Microphones require a pre-amp if you intend to use them with a line-in jack.

Some microphones claim to be amplified. But, if there is no source of power between the microphone and the computer, you can pretty much forget it.

Does the microphone have a battery? Or, any other form of external power? If not, then you'll need a pre-amp. Usually, it's just cheaper to buy a USB Microphone than a pre-amp.

Myself, I just use a mixer (like a live D.J. would use) with a built-in pre-amp.

Now, if you are using a USB microphone, then you shouldn't be having any trouble.

If you are using a standard microphone, then you'll need a pre-amp.

As for why it works with your desktop, I can offer two possible explanations.

1) Almost all PC's have a Microphone specific jack that has a pre-amp circuit. But, none of the modern Mac's do.

2) Many older Macs do have a Microphone jack. I don't know exactly when it was removed from their systems, but I do know that the old iMac G3 I have has one, and my old PowerMac G3 had one. My newer G4 systems do not, but some of the G4 towers may have (I don't know).

I hope this helps.
 

gr8tfly

macrumors 603
Oct 29, 2006
5,298
48
~119W 34N
I think you're saying the level indicator for sound input doesn't move when the headset mic is plugged in. Some mics require power, which isn't available on the MBP's line-in jack. Also, the input jack is designed for line-in levels, which are much higher than a dynamic mic provides. I haven't tried it myself, but apparently you can get some useable level by setting the input level control (in the Sound pref pane) to maximum.
 

iceprincess0966

macrumors newbie
Jul 13, 2006
13
0
I just solved this problem today and thought I'd share my experience.

I had already bought one cheap headset and had the same "microphone doesn't work" problem. After doing a little research online, I realized that the cheap headset was less of a problem than my not-so-cheap MacBook Pro.

I went to Office Max and got a Plantronics USB headseat (under-ear) and it works great. Awesome quality sound... very comfortable to wear.
 

H$R

macrumors 6502
Apr 1, 2008
352
0
Switzerland
I am experiencing the same problem right now. (better said my sister with her MacBook).
We have a Sennheiser PC 151 headset with standard 3.5mm connectors. it worked on her MacBook so far (Nov 2007, Leopard). I haven't tried it on mine because I didn't need a microphone since I am using a Mac. (I have a Feb 2008 model, Leopard).
It doesn't work since today, it has a few days ago. It came to my mind, that the only thing that has changed, is the EFI 1.2 update for the MacBook she's installed yesterday.

OK, I get the point of the "line-in" only and it's ok for me. She's really disappointed now but that's life. Still..why did it work in the first place and is now disabled?

I think we have to buy a USB headset in addition to the old one. (I've always tried to avoid USB hadsets for Notebooks because USB ports are rare especially on the MacBook.) But can't change facts I guess. Cheers


EDIT: I just bought the Logitech USB Chat Comfort Headset. It is working pretty well as it should.