INTRODUCTION
Thank you for your purchase of
the DB 25b, a passive direct box
designed to take high impedance
signals and convert them to low
impedance. The unit features an
Attenuator volume control for the
input signal, and a Ground Lift
switch which may reduce
unwanted hum caused by "ground
loops".
DESCRIPTION
Input Jacks: 1/4" unbalanced
jacks for receiving line or
instrument level signals.
Attenuator: Reduces the input
signal by the amount indicated.
Ground Lift Switch: In the "Lift"
position, the ground connection of
the XLR jack is disconnected from
the chassis.
Output Jack: XLR balanced jack
for connection to a mixing board
or other balanced input device.
SPECIFICATIONS
Frequency Response: 20 - 20kHz +/- 3 dB
Output Impedance: 600 Ohms
Input Impedance: 50K Ohms
Max Output Level: +4 dBm
FOR WARRANTY
INFORMATION, SEE
OUR WEBSITE;
WWW.ROLLS.COM
Rolls Corporation
Salt Lake City, UT
02/08
DB25b Direct BoxDB25b Direct Box
DB25b Direct Box
SCHEMATIC
TFIL
D
NUO
RG
ROTAUNETTA
3
1
2
1WS
TSPS
1 2
3
3J
M KCAJ RLX
1J
4/1 ENOHP
2J
4/1
E
N
OH
P
1T
OIDUA RMFX
1P
K05P
CES mho 006 OT IRP K05
-
1
