Rolls PB23 User Manual
LOOP
12VDC PWR
MIC
INPUT
PB23
ADAPTER
PHANTOM POWER
LIMITED WARRANTY
This product is warranted to the original consumer purchaser to
be free from defects in materials and workmanship under normal installation, use and service for a period of one (1) year from the date of purchase
as shown on the purchaser’s receipt.
The obligation of Rolls Corporation under this warranty shall be
limited to repair or replacement (at our option), during the warranty period
of any part which proves defective in material or workmanship under
normal installation, use and service, provided the product is returned to
Rolls Corporation, TRANSPORTATION CHARGES PREPAID. Products
returned to us or to an authorized Service Center must be accompanied by
a copy of the purchase receipt. In the absence of such purchase receipt, the
warranty period shall be one (1) year from the date of manufacture.
This warranty shall be invalid if the product is damaged as a
result of defacement, misuse, abuse, neglect, accident, destruction or
alteration of the serial number, improper electrical voltages or currents,
repair, alteration or maintenance by any person or party other than our
own service facility or an authorized Service Center, or any use violative
of instructions furnished by us.
This one-year warranty is in lieu of all expressed warranties,
obligations or liabilities. ANY IMPLIED WARRANTIES, OBLIGATIONS, OR LIABILITIES, INCLUDING BUT NOT LIMITED TO THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
FOR A PARTICULAR PURPOSE, SHALL BE LIMITED IN DURATION TO THE ONE YEAR DURATION OF THIS WRITTEN LIMITED
WARRANTY. Some states do not allow limitations on how long an
implied warranty lasts, so the above limitation may not apply to you.
MIC
OUTPUT
Owners Manual
PB23
ADAPTER
PHANTOM POWER
12 VOLT 48 VOLT
PHANTOM VOLTAGE
PB23 Phantom
Power Adapter
• Powers a condenser microphone requiri ng
phantom power
• 12 or 48 Volts available
• AC adapter included
• High frequency switching power supply to
elliminate noise
The PB23 is for powering a phantom powered
microphone with either 12 or 48 VDC. The unit
uses a 100kHz switching power supply to
elliminate noise generated by common power
supplies. The PB23 has pull-down resistors so it
will work with any mixer. 2 DC jacks have been
included so several units may be operated with
one power supply.
CIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES FOR
IN NO EVENT SHALL WE BE LIABLE FOR ANY SPEBREACH OF THIS OR ANY OTHER WARRANTY, EXPRESSED OR
IMPLIED, WHATSOEVER. Some states do not allow the exclusion or
limitation of special, incidental or consequential damages so the above
limitation or exclusion may not apply to you. This warranty gives you
specific legal rights, and you may also have other rights which vary from
state to state.
Rolls Corporation
Salt Lake City, UT
9/95
INTRODUCTION
Thank you for purchasing the PB23 Phantom Power Adapter , the unit is
designed to provide years of lasting value and usefulness. The unit
powers a condenser microphone that is designed for phantom po w ering.
Phantom power microphones provide much greater dynamic r ange, lower
noise and better sound quality. Most microphones will operate at full
performance with 12 volts DC, however some mics require 48 volts which
was the old tube mic standard. The PB23 features selectable v oltage
levels.
OPERATION
Switch the PHANTOM VOLTAGE to the appropriate setting. Connect a
condenser microphone to the input connector(s) and connect the
output(s) to a mixer or other audio input device. Apply power to the unit by
connecting the enclosed adapter to an AC outlet and to the 12VDC
P ow er Loop. The LED on the front of the unit will light. The two DC input
jacks are provided in order to use one power supply to pow er more than
one unit. The units provide no audio gain as they are not microphone
preamps.
MIXER
MIC
OUTPUT
PHANTOM POWER
ADAPTER
PHANTOM VOLTAGE
12 VOLT 48 VOLT
2
J1
XLR F PC
3
1
6.8K
INPUT
PB23
R5
MIC
C4 47U
C3
AC ADAPTER
12VDC PWR
47U
R4
6.8K
C10
503
LOOP
2
J2
3
XLR M PC
1
MIC
OUTPUT
MIC
INPUT
PHANTOM POWER
ADAPTER
PB23
PHANTOM VOLTAGE
12 VOLT 48 VOLT
12VDC PWR
LOOP
U1F
13 12
4069
R3
10K
J3
JAPDC
U1E
11 10
4069
R1
22K
C10 120PF
2
3
1
1N4001
D1
U1A 4069
1 2
U1B 4069
3 4
U1C 4069
5 6
U1D
9 8
1
4069
C1
1000UF
C7 .047
C8 .047
C9 .047
D3
D6
D5
1N4148
1N4148
1N4148
1N4148
U2
1N4148
7812
1N4148
3
I
O
G
C2
1 UF
2
D7
C5
1U
D2
D4
C11
1U
Title
Size Document Number REV
A PB23.SCH
Date: September 4, 1995 Sheet of
123
48V 12V
C6
1U
SW1A
DPDT
ROLLS CORPORATION
PB23 PHANTOM BOX
SPECIFICATIONS
Phantom Voltage: 12V or 48V selectable
Jacks: Male and Female XLR jacks,
2: 5mm DC input jacks
Control: 12/48 volt selector switch
P ow er Input 14 - 18 VCD (adapter included)
Size: 3" x 2.5" x 1.25"
Weight: 1 lb (.45 Kg)
Loading...