Rolls DB25b DI Manual & Schematic 电路图.pdf

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1、INTRODUCTION Thank you for your purchase of the DB 25b, a passive direct box designed to take high impedance signals and convert them to low impedance. The unit features an Attenuator volume control for the input signal, and a Ground Lift switch which may reduce unwanted hum caused by ground loops.

2、DESCRIPTION Input Jacks: 1/4 unbalanced jacks for receiving line or instrument level signals. Attenuator: Reduces the input signal by the amount indicated. Ground Lift Switch: In the Lift position, the ground connection of the XLR jack is disconnected from the chassis. Output Jack: XLR balanced jack

3、 for connection to a mixing board or other balanced input device. SPECIFICATIONS Frequency Response: 20 - 20kHz +/- 3 dB Output Impedance: 600 Ohms Input Impedance: 50K Ohms Max Output Level: +4 dBm FOR WARRANTY INFORMATION, SEE OUR WEBSITE; WWW.ROLLS.COM Rolls Corporation Salt Lake City, UT 02/08 DB25b Direct BoxDB25b Direct BoxDB25b Direct Box SCHEMATIC TF I L DNUORG ROTAUNETTA 3 1 2 1WS TSPS 12 3 3J M KCAJ RLX 1J 4 / 1 ENOHP 2J 4 / 1 ENOHP 1T OIDUA RMFX 1P K05P CES mho 006 OT IRP K05 RadioFans.CN 收音机爱 好者资料库