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.
