Crown CM-700 manual PZM Piano Miking from, CM-311AE Fan, Whats a PXT?

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

Ijust 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

Figure 2. Female XLR to stereo mini phone adapter cable. Figure 3. Dual female XLR to stereo mini phone adapter.

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.

APX-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.

For more information, call 800-342-6939

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