Rolls RDB104 Quad Direct Box User manual

RDB104 Quad Direct Box
The RDB104 Quad Active Direct Box is a four channel impedance matching
device designed for the audio professional and musician. Each channel of the
RDB104 features t o paralleled 1/4" input jacks, one on the front panel the
other on the rear, and one XLR output. An input Level control, a 30 dB output
Pad s itch, and a Ground Lift s itch have also been provided for each channel.
Each channels' input impedance is 100k ohms, and the output impedance is 100
ohms balanced. The signal is electronically balanced eliminating lo frequency
rolloff and un anted phase shift.
FEATURES:
 Four channels of active impedance matching
 Paralleled input jacks on the front and rear
Each Channel features:
 Input Level control
 Pad s itch
 Ground lift s itch
SPECIFICATIONS
Input Impedance: 100 kW
Output Impedance: 100 W balanced
Max. Output Level: +22 dB (Pad out)
Gain: -infinity to 0 dB
THD: < 0.007%
Noise referenced to 0: < -90dB
Headroom max out level: +22 dB
Dimensions 1.75" X 6" X 19"
(89mm X 162mm X 482mm)
Weight 6 lbs. (2.72 Kg)
Po er 120VAC (230VAC) 15VA
ROLLS Coporation
5143 South Main Street, Salt Lake City, UT, 84107
[phone] FAX [phone]
[email protected] • www.rolls.com
LEVEL
INPUT
OUTPUT
2
Output
Buffer
30dB
PAD
SWITCH
GROUND
LIFT
LEVELLEVELLEVELLEVEL
-00 0
POWER
INPUT INPUT INPUT INPUT
QUAD
ACTIVE
DIRECT BOX
RDB104
CHANNEL ONE CHANNEL TWO CHANNEL THREE CHANNEL FOUR
-00 0 -00 0 -00 0
CHANNEL FOUR CHANNEL THREE CHANNEL TWO CHANNEL ONE
-30 dB
PAD
OUTPUT INPUT
GND
LIFT
OUTPUT INPUT OUTPUT INPUT OUTPUT INPUT
WARNING:
DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE.
NO USER SERVICABLE PARTS INSIDE.
120 VAC
50/60 Hz 15 VA
MODEL RDB104
MADE IN U.S.A.
SERIAL NUMBER
104-
RISQUE DE CHOC - NE PAS ENLEVER RISK OF ELECTRIC SHOCK
NRTL /C
-30 dB
PAD
GND
LIFT GND
LIFT -30 dB
PAD
GND
LIFT
-30 dB
PAD
R