Thank you for your purchase of the MB35 ProMatch USB Stereo Dual Con- verter. Specifically, the MB35 converts consumer level stereo RCA signals to balanced XLR professional line level - and back.
WARRANTY
For compete information on the Rolls 1 Year Warranty, and to register this product, see our web site at www.rolls.com.
DESCRIPTION
REAR PANEL
+4 dB IN LEFT and RIGHT XLR jacks: Female XLR jacks to be connected to the output of a professional
+4 dB OUT LEFT and RIGHT XLR jacks: Male XLR jacks to be connected to the input of a professional
RCA - Line Out: The RCA out can be used with any input on CH2. The most common use is to convert a 1/8” Stereo Headphone signal to RCA line level.
FRONT PANEL
LEVEL 1: Adjusts the signal level of channel one, or the +4 dB IN to
LEVEL 2: Adjusts the signal level of channel two, or the
1/8” Stereo input: For connection to the output of a headphone level such as a computers headphone output or mixers headphone output.
PWR LED: Indicates that power is applied to the MB35.
12 VDC jack: For connection to the Rolls PS27 12 Volt DC power supply. The outside of the jack (barrel) is positive, the inside is negative.
USB: The USB input is CH1 in XLR’s. The USB output is CH2 out - XLR or RCA’s.
IMPORTANT USB NOTE:
When connecting the USB, your computer should recognize the connection. We offer no support for using or setting up the USB, or interfacing with applications. Please contact your dealer reguarding these issues.
CONSUMER LEVEL VS PROFESSIONAL LEVEL
The purpose of the MB35 is to connect consumer level equipment to professional level equipment. An explanation of these are ad- dressed here.
Consumer level signals typically come from devices such as cam- corders, cassette decks, CD or MP3 players, and home video play- ers. Professional level signals are associated with devices found in recording studios and sound reinforcement systems like mixing boards, signal processors, and their associated amplifiers.
SCHEMATIC
USB ProMatch MB35
ProMatch MB35
MB35 PROMATCH USB
The MB35 converts stereo consumer level signals 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
-1/8” Headphone level to line level adaptor
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 |
2 J1
XLR F PC 1
+4 INPUTS
2 J4
XLR F PC
1
| +VB | R4 |
|
|
|
|
|
|
| |
|
|
| 10K 1% |
|
|
|
|
|
|
|
C2 |
|
| R2 |
| +12 |
|
|
|
|
|
1U |
|
|
| 8 |
|
|
|
|
| |
|
| 10.0K 1% |
|
|
|
|
|
|
| |
|
|
|
| 4560 |
|
| USB IN | RED | ||
|
|
|
| 5 | C13 |
| ||||
| C1 | 1U |
| U1B | 7 | 3 | R24 |
| RCAX4 | |
3 | 6 |
|
| 10K |
| J6C | ||||
|
|
| R1 |
|
| 1U | P1A | 2 | 4 | LEFT OUT |
|
|
|
|
| P100K X2 | 100 |
| |||
|
|
| 10.0K 1% |
| R3 |
|
| |||
|
|
|
|
|
| 1 | R18 |
| 6 | |
| +VB |
|
| 10K 1% |
|
| ||||
| R8 |
|
|
|
|
|
| |||
|
|
|
|
|
|
|
|
|
| |
C4 |
|
| 10K 1% |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
1U |
|
| R7 |
|
|
|
|
|
| |
|
|
|
|
|
|
|
|
| ||
|
|
| 10.0K 1% | 3 | 4560 | C14 |
| USB IN | BROWN | |
|
|
|
| 6 | R26 |
| RCAX4 | |||
| C3 |
|
|
| U1A | 1 |
|
| ||
3 |
|
| 2 |
|
| 10K |
| J6D | ||
1U |
|
| R6 |
|
| 1U | P1B | 5 | 5 | RIGHT OUT |
|
|
| 10.0K 1% |
|
| P100K X2 | R25 |
| ||
|
|
|
| 4 | 100 |
| ||||
|
|
|
|
|
|
| 4 |
|
| 6 |
J7 | R5 |
| BLACK |
|
3.5STJK | 10K 1% | C17 | USB OUT | P2A |
|
| 1U | 3 | P100K X2 |
|
| 1 |
RCAX4 | C5 | R11 |
|
| C16 |
|
J6B | 1U | 4.7K | 2 | 120PF |
| |
LEFT IN | 2 |
|
| 2 | 1 | |
| R18 4.7K | U2A | ||||
|
| |||||
| C18 1U |
|
| 3 |
|
|
3 | R10 |
|
|
|
| |
|
|
| 4560 |
| ||
|
|
|
| +VB |
| |
|
|
| 4 |
| ||
3 |
| 47K |
| P2B |
| |
|
|
|
|
|
| |
| 1 |
| 6 | P100K X2 |
| |
RIGHT IN |
|
| 4 |
| ||
|
|
|
|
| C15 | |
J6A |
| R174.7K |
| |||
|
|
| ||||
RCAX4 C6 1U | R28 |
| 5 |
| 120PF | |
WHITE |
| 4.7K |
| |||
C20 |
|
| ||||
USB OUT |
|
| 2 | 4560 | 1 | |
1U |
|
| 3 | U3A |
| |
|
|
|
| |||
GREEN
USB GND
4
|
|
|
| R13 | C8 |
|
|
|
|
| 47 | 47U | 3 |
| R14 | 10K |
| 2 | 1 | |
|
|
|
|
| ||
R12 |
| +12 |
| R15 | C9 | J3 |
8 |
| 47 | 47U | |||
10K | 6 |
| 4560 |
| RCAX2 | XLR JACK M |
|
| 7 | J8B |
| 3 | |
|
| U2B |
|
| ||
| 5 |
| LINE OUTS | R11 | ||
| +VB |
|
|
| 2 | 47K |
|
|
|
|
|
| |
|
|
|
|
| C11 |
|
|
|
| R20 | 47 | 47U | 3 |
|
|
|
| |||
|
|
|
|
|
| +4 OUTS |
| R16 | 10K |
|
| 2 | 1 |
|
|
|
|
| ||
R19 |
| +12 |
| R9 | C12 | J2 |
10K |
|
| 47 | 47U | ||
8 |
| XLR JACK M | ||||
|
|
|
|
| RCAX2 | |
| 6 | 4560 |
|
| 1 | |
|
| 7 |
| J8A | ||
|
| U3B |
|
| ||
| 5 |
|
| R10 | ||
+VB |
|
|
| 2 | 47K | |
|
|
|
|
| ||
| 1/8” stereo: 10k Ohm |
Output Impedance: | RCA: 100 Ohm |
| XLR: 100 Ohm balanced |
Noise Floor: | |
Gain: | +4 dB In: |
| |
THD: | .003% |
Power: | 12 VDC adapter (center negative) |
Weight: | 1 lbs. (.45 Kg) |
Size: | 4.15” x 2.46” x 1.55” |
|
|
|
| +12 |
| BLUE |
| MB15b has NO usb function | ||
|
|
|
|
| PWR | USB PWR | N/C | |||
|
| D1 |
| R21 | D2 |
|
|
|
|
|
|
| C10 | LDRR |
|
|
|
|
| ||
| J5 | 1N4001 | 18K |
|
| +12 |
|
| ||
| 2 | 47U |
|
|
|
| ROLLS CORPORATION | |||
|
| +VB |
|
|
|
| ||||
14 - 24 VDC |
| 3 |
|
|
|
| C19 | 5968 S 350 W |
| |
TIP NEG |
| 1 |
| R22 | R23 |
|
| .047 | MURRAY, UT | 84107 |
BARRELL POS. | JAPDC |
|
| 22K | 4.7K |
|
|
| PROMATCH II MB15b/MB35 |
|
|
|
|
|
|
|
|
|
| ||
|
|
| C7 |
|
|
|
| Size: | Document Number: | Rev: |
|
|
| 1K UF |
|
|
|
| |||
|
|
|
|
|
|
|
| Ba MB35.SCH | A | |
|
|
|
|
|
|
|
|
| ||
|
|
|
|
|
|
|
| Date: | 14 March 2008 | Sheet 1 of 1 |
www.rolls.com | 6 | 75889 00350 | 5 |
Rolls Corporation Salt Lake City, UT 07/08
