Rolls MX51 owner manual Introduction, Description, Operation, Specifications

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.

DC PWR OUTPUT	CH 4	CH 3	CH 2	CH 1
INPUT	INPUT	INPUT	INPUTS	INPUT

MINI- MIX II

MX51

LINE/	CH 4
HEADPHONE		CH 3	CH 2	CH 1
OUTPUT	LEVEL	LEVEL	LEVEL	LEVEL

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	10K Ω unbalanced each jack
Input Impedance:
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)

C1

R1

J5

1U

4.7K

P4

PHONE 1/4

P100K

CH 1

C2

25PF

4558

R2

2

10K

U1A 3

1

C11

R4

J4

4

10K

25PF

PHONE 1/4

+B

R7

100K

J6

C9

R10

22K

PHONE 1/4

25PF

LINE/HDPHONE

+V

CH 2

4558

+V

J3A

C3

8

4560

C5

R5

6

8

J2B

RCAX4 PC

47U

10K

1U

U1B 5

7

6

RCAX4 PC

1

P3

7

4

U2B

P100K

R3

5

3

+B

10K

R16

6

LINE OUTS

+B

51

2

R6

10K

+B

5

J3B

C4

RCAX4 PC

R8

10K

1U

4

P2

P100K

R13

100K

CH 3

6

5

R9

10K

+B

C10

25PF

4560

J2A

RCAX4 PC

2

1

R11

10K

P1 U2A

1

3

P100K

R14

CH4

3

4

C6

10K

1U

+B

2

R12

10K

+B

D2

R19

+V

+B

1N4001

J1

10K

2

3

1

C7

R18

C12

10K

47U

JAPDC

1000 UF

ROLLS CORPORATION

IN 9-15 VAC/VDC

Title

ROLLS MX51 MINI MIX 2

Size

Document Number

REV

A

MX51

Date:

August 31, 1994

Sheet

of