Rolls MINI-MIXII MX51 - Manual (Page 2)

INTRODUCTION
Thank you for your purchase of the MX51 Mini-Mix II. The MX51 is a four
channel mixer designed for Audio Visual and Aerobics applications.
Channels 1 and 2 have 1/4" inputs, Channels 3 and 4 have dual RCA
jacks mixed to mono. Channel 2 has both RCA and 1/4" inputs. The unit
also features a headphone output that will drive up to 600
Ω
headphones
with full frequency response. The MX51 is intended for professional
applications and has an FR4 glass epoxy circuit board and vinyl lami-
nated steel chassis. All inputs are mono - although the RCA inputs
appear to be stereo, the signals are mixed to mono in order to have all
signals present for A/V or aerobics applications where stereo amplifica-
tion is not desirable.
DESCRIPTION
DC PWR: For connection to the power supply.
OUT: Stereo RCA jacks (mono signal) for connection to a mixer or
amplification device.
CH 4 and CH 3 INPUT: Stereo RCA jacks for connection to a signal
source such as a CD player, cassette deck, tuner, etc.
CH 2 INPUTS: Stereo RCA and one 1/4" jacks (paralleled) for connection
to a signal source such as that mentioned for Channels 3 and 4, or to a
source such as a wireless microphone or instrument.
CH 1 INPUT: 1/4" unbalanced jack for connection to a source such as a
wireless microphone or instrument.
LINE/HEADPHONE OUTPUT: 1/4" Stereo jack for connection to a mixer,
amplifier or stereo headphones.
CH 1 - 4 LEVEL: Adjusts the volume level of each channel.
P4
P100K
C2 25PF
C1
1U R1
4.7K J5
PHONE 1/4
CH 1
R4
10K +B
2
3
1
4
U1A
4558
R7 100K
R2
10K
C11
25PF
4
5
6
J2B RCAX4 PC
LINE/HDPHONE
J6 PHONE 1/4
R16
51
C5
47U
+V
R10 22K
6
5
7
8
U2B
4560
+V
C9
25PF
6
5
7
8
U1B
4558
R3
10K
P3
P100K
C3
1U
R5
10K
J4
PHONE 1/4
1
2
3
J3A
RCAX4 PC
CH 2
R6 10K +B
+B
+B
LINE OUTS
+B
P2
P100K R13 100K
C10 25PF
2
3
1
4
U2A
4560
R8 10K
R9 10K
C4
1U
4
5
6
J3B
RCAX4 PC
CH 3
1
2
3
J2A
RCAX4 PC
CH4
R11 10K
R12 10K
C6
1U +B
+B
P1
P100K R14
10K
+B
C12
47U
+V R19
10K
R18
10K C7
1000 UF
D2
1N4001
2
3
1
J1
JAPDC
IN 9-15 VAC/VDC
Date: August 31, 1994 Sheet of
Size Document Number REV
A MX51
Title
ROLLS MX51 MINI MIX 2
ROLLS CORPORATION
OPERATION
To operate the MX51, properly connect cords from the sources to be
mixed (wireless mics, cassette decks, CD players etc.) into the channel
inputs. Connect the outputs to an amplification device or sound system.
Adjust the channel level controls for the desired volume. For private
listening, plug stereo headphones into the LINE/HEADPHONE OUTPUT
on the MX51 front.
SPECIFICATIONS
Input Impedance:
10K Ω unbalanced each jack
CH 1 Gain: 32 dB 1/4" jack (highest gain)
Ch2 Gain: 26 dB 1/4" and each RCA
Ch 3 and 4 Gain: 26 dB each RCA
Output: 1/4" stereo and stereo RCA
S/N Ratio: >90 dB
THD: <.008%
IMD(SMPTE): <.008%
Power: 12 VDC adapter
Weight: 1 lbs. (.45 Kg)
Size: 3" x 5" x 1.25" (8 x 13 x 3.2 cm)
DC PWR
INPUT
OUTPUT CH 4
INPUT
CH 3
INPUT
CH 2
INPUTS
CH 1
INPUT
LINE/
HEADPHONE
OUTPUT
CH 4
LEVEL
CH 3
LEVEL
CH 2
LEVEL
CH 1
LEVEL
MINI- MIX II
MX51