[PPT] - ARREL AUDIO ML-118 Mid-Side Unit Livio Argentini, Marco Re ARREL PowerPoint Presentation

SLIDE 1

AUDIO

ARREL AUDIO ML-118 Mid-Side Unit

Livio Argentini, Marco Re

ARREL AUDIO Rome Via Arnoldo Mondadori 7 00128 Rome-Italy

Livio Argentini, Marco Re (ARREL AUDIO RomeVia Arnoldo Mondadori 7 00128 Rome-Italy) ARREL AUDIO ML-118 Mid-Side Unit 1 / 32

SLIDE 2

AUDIO

intro List of the Arguments

List of the Arguments

1

ARREL AUDIO ML-118 Characteristics

2

ARREL AUDIO ML-118 Architecture

3

ARREL AUDIO ML-118 Connections

4

ARREL AUDIO ML-118 Applications

5

ARREL AUDIO ML-118 Market Comparison

Livio Argentini, Marco Re (ARREL AUDIO RomeVia Arnoldo Mondadori 7 00128 Rome-Italy) ARREL AUDIO ML-118 Mid-Side Unit 2 / 32

SLIDE 3

AUDIO

intro ARREL AUDIO ML-118 Main Characteristics

ARREL AUDIO ML-118 Main Characteristics

1

Outstanding sound quality, state of the art analog components

2

Handmade production

3

New functions not available on other Mid-Side units on the market

4

Input Stage electronically balanced (no transformers) for maximum sound transparency

5

Analog Coding and Deconding Mid-Side matrix

6

HI-PASS (F x 4) and LO-PASS (F x 10) Filters in the analog processing chain (-12 dB/Oct)

7

Very flexible Insert section

8

Dry/Wet separate controls for L+R and L-R

Livio Argentini, Marco Re (ARREL AUDIO RomeVia Arnoldo Mondadori 7 00128 Rome-Italy) ARREL AUDIO ML-118 Mid-Side Unit 3 / 32

SLIDE 4

AUDIO

intro ARREL AUDIO ML-118 Main Characteristics

ARREL AUDIO ML-118 Main Characteristics

1

Phase reverse in the analog processing chain

2

Very flexible VU/MON section

3

High quality VU Meters for level measurements

4

Stereo function push button

Livio Argentini, Marco Re (ARREL AUDIO RomeVia Arnoldo Mondadori 7 00128 Rome-Italy) ARREL AUDIO ML-118 Mid-Side Unit 4 / 32

SLIDE 5

AUDIO

intro ML-118 Front Panel

ML-118 Front Panel

INPUT LEVEL ON ON ON ON 3 3 1 2 1 2 INSERT INSERT WET WET DRY DRY LEVEL LEVEL OUT OUT L-R RIGHT RIGHT L+R LEFT L+R / L-R STEREO STEREO OUT N O M / U V T F E L HI PASS HI PASS LO PASS LO PASS F x10 F x10 PHASE MONITOR PHASE F x4 F x4

Monster

ML - 118 VU VU

6
6

IN DRY MUTE L-R / R L+R / L +6 +6 WET OUT OUT 4 4 1 1 20 20 20 20 5 5 250 250 4 4 16 16 200 200 12 12 3 3 100 100 40 40 8 8 2 2 60 60

L-R / RIGHT L+R / LEFT

ON

POWER

RIGHT LEFT CAL CAL + 4 dBu

INSERT 3

R E T R R E T L S E N D R S E N D L STEREO

MID-SIDE AUDIO

Livio Argentini, Marco Re (ARREL AUDIO RomeVia Arnoldo Mondadori 7 00128 Rome-Italy) ARREL AUDIO ML-118 Mid-Side Unit 5 / 32

SLIDE 6

AUDIO

intro ML-118 Back Panel

ML-118 Back Panel

FUSE 600 mA 50 / 60 Hz - 30 W. MAINS IN 110/220 V AC LEFT T F E L T H G I R RIGHT INPUT INSERT 1/2 OUTPUT

220

MONSTER

FUSE OFF ON

GROUND GROUND GROUND GROUND GROUND 14 1 15 2 16 3 17 4 18 5 19 6 20 7 21 8 22 9 23 10 24 11 25 12 13 GROUND GROUND GROUND GROUND L-R RET 1- L+R RET 1- L-R SEND 2+ L+R SEND 2+ L-R RET 2- L+R RET 2- L-R RET 2+ L+R RET 2+ L-R SEND 2- L+R SEND 2- L-R RET 1+ L+R RET 1+ L-R SEND 1- L+R SEND 1- L-R SEND 1+ L+R SEND 1+

1 2 3 GND HOT COLD DESIGNED AND MANUFACTURED IN ITALY

CAUTION

TO REDUCE THE RISK OF FIRE OR EJECTRIC SHOCK DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE WARNING RISK OF ELECTRIC SHOCK DO NOT OPEN

ML - 118

MID-SIDE AUDIO

Livio Argentini, Marco Re (ARREL AUDIO RomeVia Arnoldo Mondadori 7 00128 Rome-Italy) ARREL AUDIO ML-118 Mid-Side Unit 6 / 32

SLIDE 7

AUDIO

intro ML-118 Input Stage

ML-118 Input Stage

1

Electronically balanced: + 4dBu standard input level

2

Calibration switch to change the input gain to different standards (Make-Up gain in the range [0; 10 dB])

3

VU meter measurement of the input level (VU/MON switch)

Livio Argentini, Marco Re (ARREL AUDIO RomeVia Arnoldo Mondadori 7 00128 Rome-Italy) ARREL AUDIO ML-118 Mid-Side Unit 7 / 32

SLIDE 8

AUDIO

intro ML-118 Input Stage

ML-118 Input Stage

INPUT LEVEL

MONSTER

ML - 118

RIGHT LEFT CAL CAL + 4 dBu

INSERT 3

R E T R R E T L S E N D R S E N D L STEREO

MID-SIDE

INPUT GAIN KNOBS CALIBRATION BUTTON CALIBRATION GAIN LED

AUDIO

Livio Argentini, Marco Re (ARREL AUDIO RomeVia Arnoldo Mondadori 7 00128 Rome-Italy) ARREL AUDIO ML-118 Mid-Side Unit 8 / 32

SLIDE 9

AUDIO

intro ML-118 Input Stage Level Measurement set-up

ML-118 Input Stage Level Measurement set-up

L+R / L-R STEREO

VU / MON

IN DRY MUTE L-R / R L+R / L WET OUT OUT

ON

POWER

Livio Argentini, Marco Re (ARREL AUDIO RomeVia Arnoldo Mondadori 7 00128 Rome-Italy) ARREL AUDIO ML-118 Mid-Side Unit 9 / 32

SLIDE 10

AUDIO

intro ML-118 Coding Matrix

ML-118 Coding Matrix

1

Analog processing to obtain the L+R and L-R signals

2

Variable gains on the L-R and L+R to adjust the amplitude to + 4dBu for maximum SNR (L+R and L-R have very different levels)

3

The dry signal can be measured on the VU meters before the analog processing section

Livio Argentini, Marco Re (ARREL AUDIO RomeVia Arnoldo Mondadori 7 00128 Rome-Italy) ARREL AUDIO ML-118 Mid-Side Unit 10 / 32

SLIDE 11

AUDIO

intro ML-118 Coding Matrix

ML-118 Coding Matrix

INPUT LEVEL ON ON

LEVEL LEVEL HI PASS HI PASS

F x10 F x10

MONSTER

ML - 118

20 20 250 250 200 200 100 100 40 40 60 60 RIGHT LEFT CAL CAL + 4 dBu

STEREO

MID-SIDE AUDIO Livio Argentini, Marco Re (ARREL AUDIO RomeVia Arnoldo Mondadori 7 00128 Rome-Italy) ARREL AUDIO ML-118 Mid-Side Unit 11 / 32

SLIDE 12

AUDIO

intro ML-118 Coding Matrix Dry Signal Measurement

ML-118 Coding Matrix Dry Signal Measurement

L+R / L-R STEREO

VU / MON

IN DRY MUTE L-R / R L+R / L WET OUT OUT

Livio Argentini, Marco Re (ARREL AUDIO RomeVia Arnoldo Mondadori 7 00128 Rome-Italy) ARREL AUDIO ML-118 Mid-Side Unit 12 / 32

SLIDE 13

AUDIO

intro ML-118 L+R, L-R filtering sections

ML-118 L+R, L-R filtering sections

1

HI-PASS and LOW-PASS filters

2

True bypass switch

3

HI-PASS normal range (20-250 Hz) Fx10 (200-2500 Hz)

4

LO-PASS normal range (1-5 kHz) Fx4 (4-20 kHz)

5

12/Oct filter slope

Livio Argentini, Marco Re (ARREL AUDIO RomeVia Arnoldo Mondadori 7 00128 Rome-Italy) ARREL AUDIO ML-118 Mid-Side Unit 13 / 32

SLIDE 14

AUDIO

intro ML-118 L+R, L-R filtering sections

ML-118 L+R, L-R filtering sections

N O N O

3 1 2

INSERT

WET DRY LEVEL OUT HI PASS LO PASS

F x10 PHASE F x4

4 1 20 20 5 250 4 16 200 12 3 100 40 8 2 60

L+R / LEFT

LO PASS CUT-OFF FREQUENCY LO PASS 4 X FREQUENCY LO PASS ON-OFF BUTTON HIGH PASS 10 X FREQUENCY HIGH PASS ON-OFF BUTTON HIGH PASS CUT-OFF FREQUENCY

Livio Argentini, Marco Re (ARREL AUDIO RomeVia Arnoldo Mondadori 7 00128 Rome-Italy) ARREL AUDIO ML-118 Mid-Side Unit 14 / 32

SLIDE 15

AUDIO

intro ML-118 Insert section

ML-118 Insert section

1

Three Inserts

2

Two inserts on the back panel

3

One insert on the front panel

4

Front panel insert very useful for on-the-fly outboard connections

5

Insert selection by push buttons

Livio Argentini, Marco Re (ARREL AUDIO RomeVia Arnoldo Mondadori 7 00128 Rome-Italy) ARREL AUDIO ML-118 Mid-Side Unit 15 / 32

SLIDE 16

AUDIO

intro ML-118 Insert Section

ML-118 Insert Section

N O N O

3 1 2

INSERT

WET DRY LEVEL OUT HI PASS LO PASS

F x10 PHASE F x4

4 1 20 20 5 250 4 16 200 12 3 100 40 8 2 60

L+R / LEFT

Livio Argentini, Marco Re (ARREL AUDIO RomeVia Arnoldo Mondadori 7 00128 Rome-Italy) ARREL AUDIO ML-118 Mid-Side Unit 16 / 32

SLIDE 17

AUDIO

intro ML-118 Phase, Dry/Wet level, Out Level

ML-118 Phase, Dry/Wet level, Out Level

1

Phase reverse to implement notch filtering (see slide 28)

2

Dry-Wet knob

3

L+R and L-R output gains

4

Level Measurement for Wet

5

Level Measurement for Out

Livio Argentini, Marco Re (ARREL AUDIO RomeVia Arnoldo Mondadori 7 00128 Rome-Italy) ARREL AUDIO ML-118 Mid-Side Unit 17 / 32

SLIDE 18

AUDIO

intro ML-118 Phase, Dry/Wet level, Out Level

ML-118 Phase, Dry/Wet level, Out Level

N O N O

3 1 2

INSERT

WET DRY LEVEL OUT HI PASS LO PASS

F x10 PHASE F x4

4 1 20 20 5 250 4 16 200 12 3 100 40 8 2 60

L+R / LEFT

DRY-WET KNOB OUTPUT LEVEL KNOB PHASE REVERSE BUTTON

Livio Argentini, Marco Re (ARREL AUDIO RomeVia Arnoldo Mondadori 7 00128 Rome-Italy) ARREL AUDIO ML-118 Mid-Side Unit 18 / 32

SLIDE 19

AUDIO

intro ML-118 Phase, Dry/Wet level, Out Level

ML-118 Phase, Dry/Wet level, Out Level

L+R / L-R STEREO

VU / MON

IN DRY MUTE L-R / R L+R / L WET OUT OUT

L+R / L-R STEREO

VU / MON

IN DRY MUTE L-R / R L+R / L WET OUT OUT

Livio Argentini, Marco Re (ARREL AUDIO RomeVia Arnoldo Mondadori 7 00128 Rome-Italy) ARREL AUDIO ML-118 Mid-Side Unit 19 / 32

SLIDE 20

AUDIO

intro ML-118 Stereo Output Stage

ML-118 Stereo Output Stage

1

Coding analog processor to obtain L and R channels

2

Two potentiometers (center detent) to change the level (gain range ±6 dB) of the decoded L and R

3

VU/MON switch (STEREO (OUT) position) (measurement not affected by the LEFT/RIGHT gains)

4

MONITOR button: signals selected by VU/MON switch sent to the main outputs

5

MUTE function to monitor the L+R and the L-R channel separately

6

L/R outs true electronically balanced

Livio Argentini, Marco Re (ARREL AUDIO RomeVia Arnoldo Mondadori 7 00128 Rome-Italy) ARREL AUDIO ML-118 Mid-Side Unit 20 / 32

SLIDE 21

AUDIO

intro ML-118 Stereo Output Stage True electronically balanced

ML-118 Stereo Output Stage True electronically balanced

1

The output stage it is not based on servo amplifiers but is a true differential driving stage

2

Pros: The sonic quality is better with respect to the servo amplifier

3

Cons: It is not possible to unbalance the true differential driver

4

In any case in the present days all the outboards are balanced so the impossibility to unbalance is not relevant

Livio Argentini, Marco Re (ARREL AUDIO RomeVia Arnoldo Mondadori 7 00128 Rome-Italy) ARREL AUDIO ML-118 Mid-Side Unit 21 / 32

SLIDE 22

AUDIO

intro ML-118 Stereo Output Stage

ML-118 Stereo Output Stage

L-R RIGHT RIGHT L+R LEFT

L+R / L-R STEREO

STEREO OUT N O M / U V T F E L

MONITOR

VU VU

6
6

IN DRY MUTE L-R / R L+R / L +6 +6 WET OUT OUT

ON

POWER

LEFT AND RIGHT OUTPUT LEVEL VU/MON SWITCH L+R/L-R MUTE SWITCH MONITOR BUTTON VU-METERS

Livio Argentini, Marco Re (ARREL AUDIO RomeVia Arnoldo Mondadori 7 00128 Rome-Italy) ARREL AUDIO ML-118 Mid-Side Unit 22 / 32

SLIDE 23

AUDIO

intro ML-118 Stereo Function

ML-118 Stereo Function

1

Used to by-pass the MS coding matrix to work as a stereo unit

2

Adds a lot of flexibility to the unit

Livio Argentini, Marco Re (ARREL AUDIO RomeVia Arnoldo Mondadori 7 00128 Rome-Italy) ARREL AUDIO ML-118 Mid-Side Unit 23 / 32

SLIDE 24

AUDIO

intro ML-118 Stereo Function

ML-118 Stereo Function

INPUT LEVEL

Monster

ML - 118

RIGHT LEFT CAL CAL + 4 dBu

INSERT 3

R E T R R E T L S E N D R S E N D L STEREO

MID-SIDE AUDIO AUDIO Livio Argentini, Marco Re (ARREL AUDIO RomeVia Arnoldo Mondadori 7 00128 Rome-Italy) ARREL AUDIO ML-118 Mid-Side Unit 24 / 32

SLIDE 25

AUDIO

intro ML-118 Block Diagram

ML-118 Block Diagram

+18 +18 +18 +18 +18 +18 +18 +18 +18 +18 +18 +18 INPUT R INPUT L

18
18
18
18
18
18
18
18
18
18
18
18

14/08/93

ML 118

SCHEMA A BLOCCHI

+ +

MATRIX

MATRIX L+R LEVEL L-R LEVEL L-R OUT LEVEL WET WET DRY DRY L+R OUT LEVEL OUT LEVEL MONITOR INSERT INSERT MATRIX R R L L L-R L-R L+R L+R LO PASS LO PASS HI PASS HI PASS INS INS PHASE PHASE MS MS STEREO STEREO VU VU VU VU VU VU VU VU VU VU VU VU OUT OUT IN IN WET WET OUT OUT DRY L / L+R L / L+R MUTE R / L-R R / L-R DRY RIGHT LEFT M-S M+S LEFT OUT RIGHT OUT +

+
1 2 3

1 2 3

+4 dBu CAL STEREO OUT STEREO IN L+R / L-R L+R / L-R L+R / L-R L+R / L-R L+R / L-R L+R / L-R DRY WET OUT OUT WET DRY STEREO OUT STEREO IN

ARREL AUDIO AUDIO

Livio Argentini, Marco Re (ARREL AUDIO RomeVia Arnoldo Mondadori 7 00128 Rome-Italy) ARREL AUDIO ML-118 Mid-Side Unit 25 / 32

SLIDE 26

AUDIO

intro ML-118 Connections

ML-118 Connections

1

Two back panel inserts

2

One front panel insert

3

Stereo Line in and Line Out

Livio Argentini, Marco Re (ARREL AUDIO RomeVia Arnoldo Mondadori 7 00128 Rome-Italy) ARREL AUDIO ML-118 Mid-Side Unit 26 / 32

SLIDE 27

AUDIO

intro ML-118 Applications in stereo mode

ML-118 Applications in stereo mode

Band pass and notch filtering (by using the phase reverse switch) De-esser Parallel Compression Fine Parallel Compression ML-118 in stereo mode IS A TRUE ANALOG HUB that permits to increment the productivity of your outboards

Livio Argentini, Marco Re (ARREL AUDIO RomeVia Arnoldo Mondadori 7 00128 Rome-Italy) ARREL AUDIO ML-118 Mid-Side Unit 27 / 32

SLIDE 28

AUDIO

intro ML-118 Band Pass and Notch Filtering

ML-118 Band Pass and Notch Filtering

WET WET DRY DRY INPUT INPUT OUT OUT LO PASS LO PASS HI PASS HI PASS INSERT INSERT PHASE PHASE

1 2 3 1 2 3

REVERSE 4000 Hz 4000 Hz 1000 Hz 1000 Hz PHASE SET SET SET SET

NOTCH FILTER BAND-PASS FILTER

Livio Argentini, Marco Re (ARREL AUDIO RomeVia Arnoldo Mondadori 7 00128 Rome-Italy) ARREL AUDIO ML-118 Mid-Side Unit 28 / 32

SLIDE 29

AUDIO

intro ML-118 De-Esser

ML-118 De-Esser

WET DRY INPUT OUT LO PASS HI PASS INSERT PHASE

1 2 3 4000 Hz 2000 Hz SET SET

COMPRESSOR LIMITER DISTRESSOR INPUT OUT

DE ESSER

Livio Argentini, Marco Re (ARREL AUDIO RomeVia Arnoldo Mondadori 7 00128 Rome-Italy) ARREL AUDIO ML-118 Mid-Side Unit 29 / 32

SLIDE 30

AUDIO

intro ML-118 Mono Fine Compression

ML-118 Mono Fine Compression

WET WET DRY DRY INPUT OUT TO COMPRESS SIDE CHAIN INPUT OUT TO COMPRESS AUDIO INPUT LO PASS LO PASS HI PASS HI PASS INSERT INSERT PHASE PHASE

1 2 3 1 2 3 REVERSE REVERSE 20 Hz 20 Hz PHASE PHASE SET SET COMPRESSOR COMPRESSOR EQUALIZER EQUALIZER

INPUT INPUT INPUT INPUT OUT OUT OUT OUT

MONO FINE PARALLEL COMPRESSION

OPTIONAL EXTERNAL UNITS OPTIONAL EXTERNAL UNITS

Livio Argentini, Marco Re (ARREL AUDIO RomeVia Arnoldo Mondadori 7 00128 Rome-Italy) ARREL AUDIO ML-118 Mid-Side Unit 30 / 32

SLIDE 31

AUDIO

intro ML-118 Parallel Compression

ML-118 Parallel Compression

WET WET DRY DRY INPUT INPUT OUT OUT LO PASS LO PASS HI PASS HI PASS INSERT INSERT PHASE PHASE

1 2 3 1 2 3 REVERSE 150 Hz 150 Hz PHASE SET SET EXPANDER COMPRESSOR

INPUT INPUT OUT OUT

PARALLEL COMPRESSION ( bass compression only ) PARALLEL COMPRESSION ( no bass compression ) Livio Argentini, Marco Re (ARREL AUDIO RomeVia Arnoldo Mondadori 7 00128 Rome-Italy) ARREL AUDIO ML-118 Mid-Side Unit 31 / 32

SLIDE 32

AUDIO

intro ML-118 and Analog Products on the Market

ML-118 and Analog Products on the Market

TK Audio: TK Lizer (1400 $) Dangerous Audio: Bax (2400 $) Vertigo Sound: VSM-2 (8115 $) SPL Audio: M/S Master (1770 $) MC Audio Lab : LUNA (XXX $) All these units have less functions with respect to the ARREL Audio ML-118.) The possible competitor is the Vertigo Sound VSM-2 but also in this case some functions are omitted.

Livio Argentini, Marco Re (ARREL AUDIO RomeVia Arnoldo Mondadori 7 00128 Rome-Italy) ARREL AUDIO ML-118 Mid-Side Unit 32 / 32