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 two 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 switch, and a Ground Lift switch 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 low frequency
rolloff and unwanted phase shift.
FEATURES:
Four channels of active impedance matching
Paralleled input jacks on the front and rear
Each Channel features:
Input Level control
Pad switch
Ground lift switch
SPECIFICATIONS
Input Impedance:
100 k
W
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)
Power
120VAC (230VAC) 15VA
ROLLS Coporation
5143 South Main Street, Salt Lake City, UT, 84107
(801) 263-9053 FAX (801) 263-9068
[email protected] • www.rolls.com
LEVEL
INPUT
OUTPUT
2
Output
Buffer
30dB
PAD
SWITCH
GROUND
LIFT
LEVEL
LEVEL
LEVEL
LEVEL
-0
0 0
POWER
INPUT
INPUT
INPUT
INPUT
QUAD ACTIVE DIRECT BOX
RDB104
CHANNEL ONE
CHANNEL TWO
CHANNEL THREE
CHANNEL FOUR
-0
0 0
-0
0 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
