Rolls DB 25b 产品宣传页
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
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
Salt Lake City, UT
02/08
DB25b Direct Box
DB25b Direct Box
DB25b Direct Box
SCHEMA
TIC
TFI
L D
NU
OR
G
RO
TA
UN
ETT
A
3
1
2
1
WS
TS
PS
1
2
3
3J
M K
CAJ
RL
X
1J
4/1
EN
OH
P
2J
4/1
EN
OH
P
1T
OID
UA
RM
FX
1P
K05
P
CE
S
mho
006
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RP
K05