Crown CM-700 Benutzerhandbuch

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Mic Memo      
 
 
PZM Piano Miking
(Continued from page 3)
Inside the female XLR connec-
tor, connect pin 1 to the cable 
shield, connect pin 2 to the 
cable center conductor, and 
connect pin 3 to pin 1.  Inside 
the stereo mini phone plug, con-
nect the cable shield to the long 
sleeve terminal, and connect the 
center conductor to the tip and 
ring terminals.  (That's assuming 
you're using only one micro-
phone).
If you're using two microphones 
for stereo, you need two adapter 
cables that connect to a single 
stereo mini phone plug (Figure 
3).  On the mic end of both 
cables, wire a female XLR con-
nector as described above. At 
the other end of both cables, 
connect both shields to the 
phone-jack sleeve, connect one 
cable's center conductor to the 
phone-plug tip terminal, and 
connect the other cable's center 
conductor to the phone-plug ring 
terminal.
If you hear distortion when 
recording the piano, set the  
MiniDisc recorder’s gain switch 
to lower gain. If you’re using a 
DAT recorder, switch in the input 
pad.
CM-311AE Fan
I just purchased the CM-311AE 
and I am so pleased with the 
headset, that I have placed a 
link to your site on our band's 
site. 
 I would like to spread the word 
to the folks that visit our site, 
that this is the best headset mic 
I've ever used! I've used two 
other headsets and they don't 
even come close to reproducing 
my voice the way I need it to be 
done, the clarity is incredible. 
Sincerely,
Jay Tucker
www.HeartsonFireband.com
What's a PXT?
I came across an older PZM that 
doesn't work. Someone told me 
that it needs a PXT to operate. 
What is that?
Phil Burns
Seattle, WA
Reply: A PXT, which looks like a 
short chrome-plated tube, is a 
discontinued Crown product. It 
is used with older PZM mics like 
the PZM-30GPG and PZM-31S.  
Those mics have an unbalanced 
high-Z output and are powered 
with a unipolar DC voltage. You 
connect each mic to a PXT 
using regular 2-conductor 
shielded mic cable. The PXT 
converts the mic output to a low-
Z balanced signal, and converts 
phantom power to a unipolar DC 
voltage that powers the mic.
A PX-18 is the same but works 
off two internal 9V batteries and 
has a 1:1 internal transformer to 
balance the signal.  A PA-18 is 
the same but works off two inter-
nal 9V batteries and has an 
active circuit to balance the sig-
nal.
Newer Crown mics have the 
electronics built into the mic or 
its connector. They have a low-
impedance balanced output.
Figure 2. Female XLR to stereo mini phone adapter cable.
Figure 3. Dual female XLR to stereo mini phone adapter.