Rolls MB15b ProMatch Manual & Schematic 电路图.pdf

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1、MB15b ProMatch Rolls Corporation Salt Lake City, UT 07/08 - Studio - Install - Broadcast . anywhere you need to convert consumer- level audio to pro-level and/or vice-versa. SCHEMATIC MB15b PROMATCH The MB15b converts stereo consumer level signals to professional line level signals - and vice versa.

2、 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 MB15b ProMatchMB15b ProMatc

3、hMB15b ProMatch Thank you for your purchase of the MB15b ProMatch Stereo Dual Con- verter. Specifi cally, the MB15b 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 produ

4、ct, see our web site at . DESCRIPTION REAR PANEL +4 dB IN LEFT and RIGHT XLR jacks: Female XLR jacks to be connected to the output of a professional line-level device such as a sound reinforce- ment mixing board or recording device. +4 dB OUT LEFT and RIGHT XLR jacks: Male XLR jacks to be connected

5、to the input of a professional line-level device such as a mixer or recording device. 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 -10 OUT Stereo RCA jacks: For connection to the input o

6、f 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 c

7、hannel two, or the -10 dB IN to +4 dB OUT channel. 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 MB15b. 12 VDC jack: For connection to the Rolls PS27 12 Volt DC pow

8、er supply. The outside of the jack (barrel) is positive, the inside is negative. 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 1/8” stereo: 10k Ohm Output Impedance: RCA: 100 Ohm XLR: 100 Ohm balanced Noise Floor: -8

9、8 dB Gain: +4 dB In: -8 dB -10 dB In: + 20 dB THD: .003% Power: 12 VDC adapter (center negative) Weight: 1 lbs. (.45 Kg) Size: 4.15” x 2.46” x 1.55” 1 ROLLS CORPORATION 5968 S 350 W MURRAY, UT84107 1 MB35.SCHA 14 March 2008 Size:Document Number: Date: Rev: Sheetof PROMATCH II MB15b/MB35 Ba +VB +12 1

10、4 - 24 VDC TIP NEG BARRELL POS. PWR +VB +VB +VB +VB +VB LEFT OUT RIGHT OUT +4 INPUTS LEFT IN RIGHT IN -10 INPUTS/HDPHN IN +12 +12 +12 +4 OUTS -10 OUTS 2 3 1 J5 JAPDC R23 4.7K D2 LDRR C7 1K UF C10 47U R22 22K R21 18K 12 3 J1 XLR F PC 5 6 7 8 U1B 4560 3 2 1 4 U1A 4560 4 6 J6C RCAX4 5 6 J6D RCAX4 2 3 J

11、6B RCAX4 1 3 J6A RCAX4 R1 10.0K 1% C11U C2 1U R2 10.0K 1% C13 1U 13 2P1A P100K X2 46 5 P1B P100K X2 C4 1U 12 3 J4 XLR F PC C14 1U R7 10.0K 1% R6 10.0K 1% C3 1U 13 2 P2A P100K X2 46 5 P2B P100K X2 2 3 1 4 U2A 4560 6 5 7 8 U2B 4560 C8 47U R13 47 C9 47U R12 10K R1410K R15 47 R11 4.7K R10 47K 2 3 1 4 U3

12、A 4560 R174.7K6 5 7 8 U3B 4560 R9 47 R2047 R1610K R19 10K C11 47U C12 47U D1 1N4001 R3 10K 1% R4 10K 1% R8 10K 1% R5 10K 1% 12 3 J2 XLR JACK M 12 3 J3 XLR JACK M R25 100 R18 100 R26 10K R24 10K USB IN USB IN C181U C5 1U C61U J7 3.5STJK 3 2 J8B RCAX2 1 2 J8A RCAX2 LINE OUTS USB OUT USB OUT R184.7K R2

13、84.7K C20 1U C17 1U BROWN RED BLACK WHITE GREEN BLUE N/C USB GND USB PWR +12 C19 .047 C15 120PF C16 120PF R11 47K R10 47K MB15b has NO usb function CONSUMER LEVEL VS PROFESSIONAL LEVEL The purpose of the MB15b is to connect consumer level equip- ment to professional level equipment. An explanation o

14、f these are addressed here. Consumer level signals typically come from devices such as camcorders, cassette decks, CD 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 amplifi ers. MB15b PROMATCH 6 75889 00150 0 RadioFans.CN 收音机爱 好者资料库