Rolls MB15 User manual

MB15
ProMatch
Owners Manual
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, TRANSPOR-
TATION 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.
IN NO EVENT SHALL WE BE LIABLE FOR ANY SPECIAL,
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 consequen-
tial 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
2/00
MB15 PROMATCH
The MB15 converts stereo consumer level sig-
nals to professional line level signals - and vice
versa.
It may also serve as a balanced inline level
control by patching the four RCA jacks together.
• Stereo Direct Box
• Stereo RCA to stereo XLR
• Stereo Level control for each channel
• Works as stereo balanced line level control
+ 4 dB IN + 4 dB OUT
LEFT RIGHT LEFT RIGHT
-10 dB
OUT -10 dB
IN LEVEL
1LEVEL
2PWR
12 VDC
12MB15
PROMATCH
Two-Way Stereo Converter

INTRODUCTION
Thank you for your purchase of the MB15 ProMatch Stereo Dual Con-
verter.Specifically, the MB15 converts consumer level stereo RCA signals
to balanced XLR professional line level - and back.
One side of the unit, labeled 1, has two XLR inputs and a stereo RCA
output.The other side, labeled 2, has stereo RCA inputs and two XLR
outputs.
Each side has a level control, and a front panel LED indicates when the
unit is on.
DESCRIPTION
REAR PANEL
+4 dB IN LEFT and RIGHT XLR jacks:Female XLR jacks to be con-
nected to the output of a professional line-level device such as a sound
reinforcement mixing board or recording device.
+4 dB OUT LEFT and RIGHT XLR jacks:Male XLR jacks to be con-
nected to the input of a professional line-level device such as a mixer or
recording device.
FRONT PANEL
-10 OUT Stereo RCA jacks:For connection to the input of a consumer
level device such as a cassette or CD player.
-10 IN Stereo RCA jacks:For connection to the output of a consumer
level device such as a cassette or CD player.
LEVEL 1:Adjusts the signal level of channel one, or the +4 dB IN to -10
dB OUT channel.
LEVEL 2:Adjusts the signal level of channel two, or the -10 dB IN to +4
dB OUT channel.
PWR LED:Indicates that power is applied to the MB15.
12VDC jack:For connection to the Rolls PS27 12Volt DC power supply.
The outside of the jack (barrel) is positive, the inside is negative.
CONSUMER LEVELVS PROFESSIONAL LEVEL
The purpose of the MB15 is to connect consumer level equipment to
professional level equipment.An explanation of these are addressed here.
Consumer level signals typically come from devices such as camcorders,
cassette decks, CD players, and home video players. Professional level
signals are associated with devices found in recording studios and sound
reinforcement systems like mixing boards, signal processors, and their
associated amplifiers.
SPECIFICATIONS
Max Out: Bal: +18 dB
Unbal: +12 dB
Max In: Bal: +22 dB
Unbal: +22 dB
Input Impedance: RCA: 100k Ohm
XLR: 10 k Ohm
Output Impedance: RCA: 100 Ohm
XLR: 100 Ohm balanced
Noise Floor: -88 dB
Gain: +4 dB In: -8 dB
-10 dB In: + 20 dB
THD: .003%
Power: 12VDC 150 mA adapter (center negative)
Weight: 1 lbs.(.45 Kg)
Size: 4.15" x 2.46" x 1.55"
SCHEMATIC
1
ROLLS CORPORATION
5968 S 350 W
MURRAY, UT 84107
1
MB15.SCH A
30 SEPTEMBER 2002
Si e: Document Number:
Date:
Rev:
Sheet of
PROMATCH MB15
Ba
+VB
+12
14 - 24 VDC
TIP NEG
BARRELL POS.
PWR
+VB
+VB
+VB
+VB
+VB
+VB
+VB
+VB
LEFT OUT
RIGHT OUT
+4 INPUTS
LEFT IN
RIGHT IN
-10 INPUTS
+12
+12
+12
+4 OUTS
-10 OUTS
2
3
1
J5
JAPDC
R23
4.7
D2
LDRR
C7
1 UF
C10
47U
R22
10
R21
10
1 2
3
J1
XLR F PC
5
6
7
8
U1B
4560
3
2
1
4
U1A
4560
4
6
J6C
RCAX4
5
8
J6D
RCAX4
2
7
J6B
RCAX4
1
3
J6A
RCAX4
R1
10.0 1%
C1 1U
C2
1U R2
10.0 1%
C13
1U
1 3
2
P1A
P100 X2
4 6
5
P1B
P100 X2
C4
1U
1 2
3
J4
XLR F PC
C14
1U
R7
10.0 1%
R6
10.0 1%
C3 1U
1 3
2
P2A
P100 X2
4 6
5
P2B
P100 X2
C16
.047
C15
.047
2
3
1
4
U2A
4560
6
5
7
8
U2B
4560
C8
47U
R13
47
C9
47U
R12
10
R14 10
R15
47
R11
10
R10 47
2
3
1
4
U3A
4560
R18 47
R17
10
6
5
7
8
U3B
4560
R9
47
R20 47
R16 10
R19
10
C11
47U
C12
47U
D1
1N4001
R3
4.99 1%
R4
4.99 1%
R8
4.99 1%
R5
4.99 1%
1 2
3
J2
XLR JAC M
1 2
3
J3
XLR JAC M