Crown PH-4B Manuals

128114-1 6/00 Crown International, Inc P.O. Box 1000, Elkhart, Indiana 46515-1000 (219) 294-8200 Fax (219) 294-8329 www.crownaudio.com PZM, PCC, SASS, GLM, LM, and CM © 2000 Crown International, All rights reserved. PZM® , PCC®, SASS® and DIFFEROID®, are registered trademarks of Crown International, Inc. Also exported as Amcron®

PH-4B FOUR CHANNEL AC POWERED 48V PHANTOM POWER SUPPLY T he Crown PH-4B is a 48-volt phan- tom power supply for condenser and electret-condenser microphones. It has four channels for powering up to four microphones. As shown in Fig. 1, it supplies 48V DC on mic-connector pins 2 and 3 with respect to pin 1 (complies with DIN standard 45 596). The phantom supply is highly filtered to minimize hum. The PH-4B itself is powered by 120V AC. It is also available powered by 220V and 240V as the PH-4BE4. Operation 1. Plug the AC cord into a wall outlet. The LED pilot light will show that the line voltage is applied. 2. Please refer to Fig. 2. You will connect the PH-4B between your mic and your system mic input. 3. Plug the cable from your microphoneinto one of the mic inputs on the PH-4B. 4. Obtain another mic cable and plug it into the adjacent output on the PH-4B. 5. Plug the other end of that cable into the mic input on your mixer or recorder. The total current drain of all channels of the PH-4B should not exceed 100 mA. To deter- mine how much current your microphones draw, check their data sheets and look for the current-drain specification. CAUTION: Inside the mic-cable male XLR connector (the one that plugs into a PH-4B input), do NOT tie pin 1 to the shell ground lug. If pin 1 is tied to the shell and you con- nect an output of the PH-4B into an unbal- anced mic input, this connection might cause hum. Specifications Type: Four-channel, AC powered. Supply voltage: +48V DC on pins 2 and 3 with respect to pin 1 of microphone input con- nector. Total output current: 100 mA continuous. Line voltage (PH-4B): 120 VAC. Line voltage (PH-4BE4): 220 - 240 VAC. Connectors: 3-pin pro audio (XLR-type) input and output connectors. Construction: Steel for strength and magnetic shielding. Dimensions: 7 1/16" L x 12" W x 1 3/4" H (17.93cm x 30.48cm x 4.45cm). Finish: Black. Weight: 4 lb. 12 oz. (2.15 kg). Accessory: RMPB kit. Fig. 1 Fig. 2 + + 6.8k 6.8k TO OTHER CHANNELS MIC OUT 3-PIN MALE MIC IN 3-PIN FEMALE 33µF 50V 33µF 50V 48 VDC SUPPLY 2 1 3 1 2 3 POWER PHANTOM IN MIC 1 OUT IN MIC 2 OUT IN MIC 3 OUT IN MIC 4 OUT AUDIO OUT MIC MIC MIC MIC