Rolls DB14 - Manual

Owners Manual

DB14

AV PRESENTER

GND-LIFT

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)

1

Rolls Corporation

5968 So 350 West

Murray

Utah 84107

1

DB14.SCH

A

1 february 2010

Document Number:

Date:

Rev:

Sheet

of

DB14b AV Presenter

Ba

INPUTS

OUTPUT

R2
10K

R1
10K

1

2

3

J2

XLR JACK M

T1

XFMR AUDIO PC

J1

3.5STJK

1

2

3

J2A

RCAX4 PC

4

5

6

J2B

RCAX4 PC

P2
P100K

P1
P100K

3

1

2

SW1

SPST

DB14 AV PRESENTER

- 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.

Thank you for your purchase of the DB14 AV PRESENTER.
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 ampli

fi

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.

SCHEMATIC

WARRANTY

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

www.rolls.com

Rolls Corporation

02-10

RIGHT

RI

GH

T

VOL UME

VO

L U

ME

LEFT

LE

FT

VOL UME

VO

L U

ME

RIGHT/LEFT

RI

GH

T/

LE

FT

IN

IN

R/L

R/

L

OUT

OU

T

L O

W

Z

OU

T

L O

W

Z

OU

T

A

V

A

V

PRESENTER

PR

ES

EN

TE

R

DB14b

DB

14

b

To snake or mixer

To unbalanced
input

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.