Rolls DB14 User Manual

Thank you for your purchase of the DB14 AV PRESENTER.

RIGHT

VOLUME

LEFT

VOLUME

RIGHT/LEFT

IN

R/L

OUT

LOW Z OUT

AV

PRESENTER

DB14b

The DB14 is a special purpose direct box for applications
such as connecting a laptop computer to a sound system.
Or where needed, a stereo source signal can be separated,
and individual volume controls used for each track such as a
rehearsing choir to a music track. It has stereo RCA inputs,
a stereo 1/8” (3.5mm), 2 volume controls, RCA and XLR
outputs, and uses no power.

DESCRIPTION

Right/Left In: RCA and 1/8” input jacks. For connection to a
laptop computer, CD player, DVD player, etc.
R/L Out: RCA jacks for sending the input signals out to a line
level amplifi cation device.
Low Z Out: Male XLR jack for sending out a mix of both A
and B signals.
Right/Left Volume: Controls the level of each input signal
independently.
GND-LIFT: Ground/Lift switch for disconnecting the ground
of the XLR jack from the ground of the DB14b.

SPECIFICATIONS

Max Input Level: +20 dB
Max Output Level: +20dB RCA, 0 dB XLR
Frequency Response: (Low Z) 50 Hz to 16
kHz
Weight: 1 lb (.45 kg)
Size: 2” x 3.5” x 1.25”
(5 x 9 x 3.2 cm)

CONNECTION

Shown below is a connection example for the DB14b. The laptop
computer’s stereo output is connected to the 3.5mm stereo input of
the DB14b via a stereo 3.5mm to 3.5mm cable.

NOTE: The Right and Left signal levels are adjusted
individually by the Right and Left Volume controls.

The XLR output is connected to a balanced low impedance input on
a snake or a mixer balanced input.
The two stereo RCA outputs may be connected to unbalanced high
impedance stereo, or individual right and left mixer inputs.

To unbalanced
input

VOLUME

VOLUME

RIGHT

LEFT

DB14b

PRESENTER

AV

OUT

IN

R/L

LOW Z OUT

To snake or mixer

RIGHT/LEFT

Owners Manual

WARRANTY

For information on the Rolls One Year Limited Warranty, and
to register this product, visit our website at www.rolls.com

SCHEMATIC

J2B

OUTPUT

RCAX4 PC

J2A

RCAX4 PC

INPUTS

J1

3.5STJK

4
6

5

1
3

2

P2
P100K

R1
10K

R2
10K

P1
P100K

XFMR AUDIO PC

T1

3

XLR JACK M

J2

SW1

1

2
3

1 2

SPST

Rolls Corporation

02-10

GND-LIFT

AV PRESENTER

DB14

- Splits Stereo RCA and stereo

1/8” (3.5mm) signals

- Individual Right and Left level

controls

- Transformer balanced XLR

mono output.

The DB14 is a special purpose direct box for ap-

plications where a stereo source signal can be

separated, and individual volume controls used

for each track such as an AV presentation from

a laptop computer, or a rehearsing choir to a

music track. It has stereo RCA and 1/8” inputs,

2 volume controls, RCA and XLR outputs, and

uses no power.

DB14 AV PRESENTER

Date:

Rolls Corporation

5968 So 350 West

Murray Utah 84107

DB14b AV Presenter

Document Number:

Ba

1 february 2010

DB14.SCH A

Sheet of

1

Rev:

1