Rolls PB223 User manual

Owners Manual
MIC 1
OUTPUT
MIC 1
INPUT
MIC 2
OUTPUT
MIC 2
INPUT
12VDC PWR
LOOP
DUAL
PHANTOM POWER
ADAPTER
PB223
PHANTOM VOLTAGE
12 VOLT  48 VOLT
PB223
PHANTOM POWER
ADAPTER
LIMITED WARRANTY
This product is warranted to the original consumer purchaser to
be free from defects in materials and workmanship under normal installa-
tion, 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, OBLIGA-
TIONS, OR LIABILITIES, INCLUDING BUT NOT LIMITED TO THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
FOR A PARTICULAR PURPOSE, SHALL BE LIMITED IN DURA-
TION 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.
IN NO EVENT SHALL WE BE LIABLE FOR ANY SPE-
CIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES FOR
BREACH 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
PB223 Phantom
Power Adapter
• Power condenser microphones requiring
phantom power
• 12 or 48Volts available
• AC adapter included
• High frequency switching power supply to
elliminate noise
The PB223 is for powering phantom powered
microphones with either 12 or 48 VDC.The unit
uses a 100kHz switching power supply to
elliminate noise generated by common power
supplies.The PB223 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.

INTRODUCTION
Thank you for purchasing the PB223 Phantom Power Adapter, this unit is
designed to provide years of lasting value and usefulness. The unit
powers up to two condenser microphones that are designed for phantom
powering.Phantom power microphones provide much greater dynamic
range, 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 PB223 features
selectable voltage levels.
OPERATION
For each Mic, switch the PHANTOMVOLTAGE 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 Power 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 power more
than one unit.The units provide no audio gain as they are not microphone
preamps.
MIC 1
OUTPUT
MIC 1
INPUT
MIC 2
OUTPUT
MIC 2
INPUT
12VDC PWR
LOOP
DUAL
PHANTOM POWER
ADAPTER
PB223
PHANTOM VOLTAGE
12 VOLT  48 VOLT
1
2
3
J2
XLR M PC
C4 47U
C3 47U
1
2
3
J1
XLR F PC
R5
6.8K
R4
6.8K
C10
503
1
2
3
SW1A
DPDT
C7 .047
1 2
U1A 4069
R1
22K
13 12
U1F
4069
R3
10K
C10 120PF
11 10
U1E
4069
3 4
U1B 4069
5 6
U1C 4069
9 8
U1D 4069
C9 .047
C8 .047
48V 12V
C6
1U
D2
1N4148
C5
1U
C11
1U
D3
1N4148
D7
1N4148
D4
1N4148
D6
1N4148
D5
1N4148
2
3
1
J3
JAPDC
D1
1N4001
I
1
G
2
O3
U2
7812
C1
1000UF
C2
1 UF
Date: September 4, 1995 Sheet of
Size Document Number REV
A PB23.SCH
Title
PB23 PHANTOM BOX
ROLLS CORPORATION
SPECIFICATIONS
PhantomVoltage: 12V or 48V selectable
Jacks: Male and Female XLR jacks,
2:5mm DC input jacks
Control: 12/48 volt selector switch
Power Input 14 - 18VCD (adapter included)
Size: 6" x 2.5" x 1.25"
Weight: 1.5 lbs (.68 Kg)
AC ADAPTER
MIC 1
OUTPUT MIC 1
INPUT MIC 2
OUTPUT MIC 2
INPUT 12VDC PWR
LOOP
DUAL
PHANTOM POWER
ADAPTER
PB223
PHANTOM VOLTAGE
12 VOLT • 48 VOLT
MIXER