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Rolls RDB104 User Manual

Rdb104 quad direct box, Quad active direct box

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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