Neumann M149 Tube ... is this normal ?

[Barbad]

Hi , I purchased an used Neumann M149 today and it's under hard testing ...

When I change polar patterns to the right side I hear five broken fffffff sound
( like 5 seconds ) and then silent and ready to use , and when i change to left side patterns i hear a ffffff long sound ( not broken ) for 5 seconds and again ready to use ! I bought it a little cheap and I'm searching for the answer of this lower price ...

is this ffffffff sound normal on changing the patterns ... ?

Thank You All .

[albee1952]

You might want to go to the Sennheiser website and ask tech support there. In any case, I know that some microphones will make noises when switching patterns so its best to mute that input. The real question is; how does the mic SOUND?

[JonnyGinese]

Originally Posted by albee1952

You might want to go to the Sennheiser website and ask tech support there. In any case, I know that some microphones will make noises when switching patterns so its best to mute that input. The real question is; how does the mic SOUND?

yeah.. +1 on muting the track... my vintage AKG 414 pops like a mofo if its not muted when switching the different modes..

[spicemix]

Yes the "sound of the ocean" is normal on the M149 when changing patterns....that is the sound of the rear capsule heating up. Relax it only lasts a few seconds and goes away.

[gvees]

Originally Posted by JonnyGinese

yeah.. +1 on muting the track... my vintage AKG 414 pops like a mofo if its not muted when switching the different modes..

+1!

[Barbad]

Thanks for your responses friends ,

I Asked tech support about the noise and they said it's normal .

Do you know about the new tube that neumann is using on last generation of M149 TUBE ?
8254 (1st Gen.)----> 6111 (2nd Gen. )----> ???? ( they have erased the spec. from tube glass )

Best Regards ,
Barbad Khakpoor