Yamaha MT4X Manual de utilizare

Multitrack Cassette Recorder

User’s Guide

Manuel de l’utilisateur

Bedienungsanleitung

Guía del Usuario

NOISE REDUCTION SYSTEM

1234

TRACK

STEREO

STOPFFREWPLAYREC/PAUSEREHE

MIC/LINE

1

HIGH

GAIN

MID

LOW

AUX

PAN

1

3

2

4

LINE MIC

-12 +12

AUX 1 AUX 2

R

EVEN

L

ODD

MIC/

LINE

TAPE

ASSIGN

C

10

9

8

7

6

5

4

3

2

1

0

MIC/LINE

2

HIGH

GAIN

MID

LOW

AUX

PAN

1

3

2

4

LINE MIC

-12 +12

AUX 1 AUX 2

R

EVEN

L

ODD

MIC/

LINE

TAPE

ASSIGN

C

10

9

8

7

6

5

4

3

2

1

0

MIC/LINE

3

HIGH

GAIN

MID

LOW

AUX

PAN

1

3

2

4

LINE MIC

-12 +12

AUX 1 AUX 2

R

EVEN

L

ODD

MIC/

LINE

TAPE

ASSIGN

C

10

9

8

7

6

5

4

3

2

1

0

MIC/LINE

4

HIGH

GAIN

MID

LOW

AUX

PAN

1

3

2

4

LINE MIC

-12 +12

AUX 1 AUX 2

R

EVEN

L

ODD

MIC/

LINE

TAPE

ASSIGN

C

10

9

8

7

6

5

4

3

2

1

0

MASTER

1

2

3

4

GROUP

1

3

2

4

ASSIGN

1

3

2

4

ASSIGN

12

AUX RETURN

LEVEL

10

9

8

7

6

5

4

3

2

1

0

10

9

8

7

6

5

4

3

2

1

0

1

3

2

4

MULTITRACK CASSETTE RECORDER

010

MIN MAX

CUE LEVEL

MONITOR

SELECT

STEREO

CUE

MONITOR/PHONES

TAPE

9.5 4.8

SYNC START IN OUT

AUTO PUNCH

MEMO

REPEAT

1

2

+9

6

3

0

3

6

10

-20

+9

6

3

0

3

6

10

-20

REC

1 2 3 4LR

REC SELECT

1 2 3 4

PHONES PUNCH I/O

TAPE SPEED CONTROL

4.8 / 9.5

PITCH

O

AUTO

PUNCH I/O

CLEARSYNC

CHECK MEMO LOCATE1

MEMO LOCATE2

COUNTER

RESET

RETURN

TO ZEROREPEAT

FCC INFORMATION (U.S.A.)

1. IMPORTANT NOTICE: DO NOT MODIFY THIS UNIT!

This product, when installed as indicated in the instructions contained in this manual, meets FCC requirements. Modifications not expressly approved by Yamaha

may void your authority, granted by the FCC, to use the product.

2. IMPORTANT: When connecting this product to accessories and/or another product use only high quality shielded cables. Cable/s supplied with this product MUST

be used. Follow all installation instructions. Failure to follow instructions could void your FCC authorization to use this product in the USA.

3. NOTE: This product has been tested and found to comply with the requirements listed in FCC Regulations, Part 15 for Class “B” digital devices. Compliance with

these requirements provides a reasonable level of assurance that your use of this product in a residential environment will not result in harmful interference with

other electronic devices. This equipment generates/uses radio frequencies and, if not installed and used according to the instructions found in the users manual, may

cause interference harmful to the operation of other electronic devices. Compliance with FCC regulations does not guarantee that interference will not occur in all

installations. If this product is found to be the source of interference, which can be determined by turning the unit “OFF” and “ON”, please try to eliminate the

problem by using one of the following measures:

Relocate either this product or the device that is being affected by the interference.

Utilize power outlets that are on different branch (circuit breaker of fuse) circuits or install AC line filter/s.

In the case of radio or TV interference, relocate/reorient the antenna. If the antenna lead-in is 300 ohm ribbon lead, change the lead-in to coaxial type cable.

If these corrective measures do not produce satisfactory results, please contact the local retailer authorized to distribute this type of product. If you can not locate the

appropriate retailer, please contact Yamaha Corporation of America, Electronic Service Division, 6600 Orangethorpe Ave, Buena Park, CA 90620

* This applies only to products distributed by YAMAHA CORPORATION OF AMERICA.

IMPORTANT NOTICE FOR

THE UNITED KINGDOM

Connecting the Plug and Cord

IMPORTANT: The wires in this mains lead are coloured in accordance

with the following code:

BLUE : NEUTRAL

BROWN : LIVE

As the colours of the wires in the mains lead of this apparatus may not

correspond with the coloured markings identifying the terminals in your

plug proceed as follows:

The wire which is coloured BLUE must be connected to the terminal

which is marked with the letter N or coloured BLACK.

The wire which is coloured BROWN must be connected to the terminal

which is marked with the letter L or coloured RED.

Making sure that neither core is connected to the earth terminal of the

three pin plug.

* This applies only to products distributed by YAMAHA - KEMBLE

MUSIC (U.K.) LTD.

CANADA

THIS DIGITAL APPARATUS DOES NOT EXCEED THE “CLASS B”

LIMITS FOR RADIO NOISE EMISSIONS FROM DIGITAL

APPARATUS SET OUT IN THE RADIO INTERFERENCE

REGULATION OF THE CANADIAN DEPARTMENT OF

COMMUNICATIONS.

LE PRESENT APPAREIL NUMERIQUE N’EMET PAS DE BRUITS

RADIOELECTRIQUES DEPASSANT LES LIMITES APPLICABLES

AUX APPAREILS NUMERIQUES DE LA “CLASSE B”

PRESCRITES DANS LE REGLEMENT SUR LE BROUILLAGE

RADIOELECTRIQUE EDICTE PAR LE MINISTERE DES

COMMUNICATIONS DU CANADA.

* This applies only to products distributed by YAMAHA CANADA

MUSIC LTD.

Dette apparat overholder det gaeldende EF-direktiv vedrørende

radiostøj.

Cet appareil est conforme aux prescriptions de la directive

communautaire 87/308/CEE.

Diese Geräe entsprechen der EG-Richtlinie 82/499/EWG

und/oder 87/308/EWG.

This product complies with the radio frequency interference

requirements of the Council Directive 82/499/EEC and/or

87/308/EEC.

Questo apparecchio é conforme al D.M.13 aprile 1989

(Direttiva CEE/87/308) sulla soppressione dei radiodisturbi.

Este producto está de acuerdo con los requisitos sobre

interferencias de radio frequencia fijados por el Consejo

Directivo 87/308/CEE.

YAMAHA CORPORATION

1

Precautions

User’s Guide

Precautions

1 Avoid excessive heat, humidity, dust, and vibration.

Keep the MT4X away from locations where it is likely to be

exposed to high temperatures or humidity, such as direct

sunlight, near radiators, stoves, etc. Also avoid locations which

are subject to excessive dust accumulation or vibration which

could cause mechanical damage.

2 Avoid physical shocks

Strong physical shocks can cause damage. Handle the unit with

care.

3 Clean with a soft dry cloth

Never use solvents such as benzine or thinner to clean the

MT4X. Wipe it clean with a soft dry cloth.

4 Do not open the case or attempt repairs or modiﬁcation

yourself

The MT4X contains no user-serviceable parts. For other than

routine cleaning, refer all maintenance to qualiﬁed YAMAHA

service personnel. Opening the case and/or tampering with the

internal circuitry will void the warranty.

5 Make sure power is off before making or removing

connections

Always turn the power OFF prior to connecting or

disconnecting cables. This will prevent damage to the MT4X as

well as other connected equipment.

6 Handle cables carefully

Always plug and unplug cables — including the AC cord — by

gripping the connector, not the cord.

7 Always use the correct power supply

The MT4X is sold conﬁgured to the appropriate power

speciﬁcations for the local area. The power supply voltage and

power consumption are listed on the bottom panel. If you move

to an area with a different AC mains voltage, be sure to check

with your nearest YAMAHA dealer before using the unit.

8 Keep the heads and tape path clean

To ensure consistent high performance and sound quality from

the MT4X, it is important to clean the heads and tape path

regularly — ideally before each recording session. Use a

cleaning kit speciﬁcally designed to use with cassette tape

equipment.

9 Use only high-quality chrome cassette tape

The MT4X is designed to be used with Chrome tape (CrO

2

tape

— Bias: HIGH or TYPEII position; EQ: 70

µ

s). It will not work

properly with Ferrichrome tape formulations. You may

experience high frequency distortion if you use such tapes.

The use of tapes longer than 90 minutes (C-120 and longer) is

not recommended. These tapes are much thinner and therefore

prone to poor performance or failure.

TDK SA 46 – 90 and Maxell XLII 46 – 90 are recommended.

10 Handle the cassette tapes properly

You should fast forward and rewind new tapes before you

record on them. This will prevent any possible binding that

could be caused by the tape being tightly wound at the factory.

It is best not to use the ﬁrst and last 20 seconds of a tape. The

splice between the leader and the tape can cause distortion.

When loading a cassette, check that the tape is not loose, then

load the tape ﬁrmly into the cassette compartment. If the tape is

not loaded properly, the unit may jam or otherwise malfunction.

11 Use the dbx™ switch correctly

To obtain the best possible sound quality, you should always use

the dbx™ noise reduction system to playback tapes that were

recorded with the dbx™ system on. If the tape was recorded

without dbx™, turn the noise reduction system off.

The dbx™ noise reduction system was manufactured based on a

patent licence from THAT Corporation. dbx is a trademark of

Carillion Electronics Corporation.

Contents

Precautions

1

Introduction

2

Features2

Structure of the MT4X3

1 Controls and Connections

5

Channel Modules6

Master Module7

Recorder Controls8

Transport Controls10

Multi-function Display10

Front Panel Connections11

Rear Panel Connections12

Power Connections13

2 Example System

14

3 Recording Functions

15

Monitoring15

Initial recording16

Overdubbing19

Punch-in/out recording21

Ping-pong recording29

Mixdown32

4 Synchronization

34

FSK recording35

Synchronized playback36

Synchronized mixdown39

5 Memory Functions

41

Memo Function41

Repeat Function42

Recording Levels Function42

Appendix

44

Troubleshooting44

Maintenance45

Specifications46

Block Diagram48

Dimensions49

Tracking Sheet49

Glossary51

Introduction

2

User’s Guide

Introduction

Your MT4X Multitrack Cassette recorder is a powerful recording tool that will allow you to capture your

music at a very high level of sound quality. It is an advanced technology, easy-to-use four-track cassette

tape recorder with a comprehensive four-channel mixer.

In order to make use of the many features of the MT4X and to obtain the best performance, please read this

manual thoroughly — and keep it in a safe place for future reference.

Features

General

The MT4X consists of a four-channel mixer section and a four-track cassette tape recorder section inside a

compact enclosure. Independent recording and playback is possible for each track. This allows you to

create high-quality multi-track recordings.

Mixer

• The mixer section is equipped with independent stereo buses for greater ﬂexibility.

• Continuously variable gain controls are provided for each input channel. These can be used with any

input source, from microphones to electronic instruments.

• Each channel has a three band equalizer (HIGH, MID, and LOW) giving you ﬂexible tone-shaping

capabilities.

• Dual AUX SEND and AUX RETURN (stereo) connectors allow you to add effects from external signal

processors. You can assign the AUX RETURN signal to each channel as required.

Recorder

• The dbx



noise reduction system provides substantial noise reduction and a wide dynamic range.

• An automatic punch-in/out recording function and a rehearsal function make recording easier and

more accurate. Locate functions, such as memory and return-to-zero are provided for additional

convenience.

• A large, multi-functional display shows the recording and playback levels, along with a tape counter

and other indicators, giving you immediate and helpful information about the status of the MT4X.

• The pitch control allows you to vary the tape speed with in a range of approximately

±

10%. This can be

useful when you have to compensate for pitch variations during an overdub.

• The tape transport is a full-logic mechanism, making recording and playback operation smooth and

simple.

• The transport offers two speeds: 9.5 cm/sec and 4.8 cm/sec.

3

Introduction

User’s Guide

Structure of the MT4X

L/MONO

AUX RETURN

21

L/MONO

ASSIGN ASSIGN

MASTER

1

2

3

4

GROUP

1

3

2

4

1

3

2

4

12

AUX RETURN

LEVEL

10

9

8

7

6

5

4

3

2

1

0

10

9

8

7

6

5

4

3

2

1

0

1

3

2

4

010

MIN MAX

CUE LEVEL

MONITOR

SELECT

STEREO

CUE

MONITOR/PHONES

MIC/LINE

3

HIGH

GAIN

MID

LOW

AUX

PAN

1

3

2

4

LINE MIC

-12 +12

AUX 1 AUX 2

R

EVEN

L

ODD

MIC/

LINE

TAPE

ASSIGN

C

10

9

8

7

6

5

4

3

2

1

0

STEREO OUT

LR

MONITOR OUT

LR

TAPE OUT

312SYNC/4

AUX SEND

12

REC SELECT

1 2 3 4

0

PHONES

MIC/LINE INPUT

Introduction

4

User’s Guide

Structure of the MT4X

The MT4X can be divided into three basic sections – the mixer, the recorder, and the bus lines which

connect them:

Mixer

The mixer has four input channels. It adjusts the input signals at each respective channel and sends them

to the bus lines.

The signals input to each channel of the mixer can be switched to either input signals (MIC/LINE) or

playback signals (TAPE). When TAPE is selected, the playback signal from each track is input to the

corresponding channel. The tone of the signal is adjusted through the equalizer and the volume at the

channel faders. It is then sent to the bus lines using the ASSIGN keys and PAN control.

Bus Lines

There are four main bus lines (group buses) which receive the input signals from each respective channel

of the mixer. If signals from two or more input channels are sent to a bus line, these signals are overlaid or

mixed.

There is also a STEREO bus (L, R), an AUX bus (1, 2), and a CUE bus.

Recorder

The signals from the bus lines are recorded by the cassette recorder. It also sends the signal to the

TAPE OUT connectors and back to the mixer (including the CUE bus).

Also refer to the "Block Diagram" on page 48.

5

Controls and Connections

User’s Guide

1 Controls and Connections

NOISE REDUCTION SYSTEM

1234

TRACK

STEREO

STOPFFREWPLAYREC/PAUSEREHE

MASTER

MULTITRACK CASSETTE RECORDER

1

2

3

4

GROUP

1

3

2

4

ASSIGN

1

3

2

4

ASSIGN

12

AUX RETURN

LEVEL

10

9

8

7

6

5

4

3

2

1

0

10

9

8

7

6

5

4

3

2

1

0

1

3

2

4

010

MIN MAX

CUE LEVEL

MONITOR

SELECT

STEREO

CUE

MONITOR/PHONES

TAPE

9.5 4.8

SYNC START IN OUT

AUTO PUNCH

MEMO

REPEAT

1

2

+9

6

3

0

3

6

10

-20

+9

6

3

0

3

6

10

-20

REC

1 2 3 4LR

REC SELECT

1 2 3 4

PHONES PUNCH I/O

TAPE SPEED CONTROL

4.8 / 9.5

PITCH

O

AUTO

PUNCH I/O

CLEARSYNC

CHECK MEMO LOCATE1

MEMO LOCATE2

COUNTER

RESET

RETURN

TO ZEROREPEAT

MIC/LINE

1

HIGH

GAIN

MID

LOW

AUX

PAN

1

3

2

4

LINE MIC

-12 +12

AUX 1 AUX 2

R

EVEN

L

ODD

MIC/

LINE

TAPE

ASSIGN

C

10

9

8

7

6

5

4

3

2

1

0

MIC/LINE

2

HIGH

GAIN

MID

LOW

AUX

PAN

1

3

2

4

LINE MIC

-12 +12

AUX 1 AUX 2

R

EVEN

L

ODD

MIC/

LINE

TAPE

ASSIGN

C

10

9

8

7

6

5

4

3

2

1

0

MIC/LINE

3

HIGH

GAIN

MID

LOW

AUX

PAN

1

3

2

4

LINE MIC

-12 +12

AUX 1 AUX 2

R

EVEN

L

ODD

MIC/

LINE

TAPE

ASSIGN

C

10

9

8

7

6

5

4

3

2

1

0

MIC/LINE

4

HIGH

GAIN

MID

LOW

AUX

PAN

1

3

2

4

LINE MIC

-12 +12

AUX 1 AUX 2

R

EVEN

L

ODD

MIC/

LINE

TAPE

ASSIGN

C

10

9

8

7

6

5

4

3

2

1

0

ON

POWER

OFF

AUX RETURN

2

L/MONO

1

L/MONO

STEREO OUT

LR

MONITOR OUT

LR

TAPE OUT

312SYNC/4

AUX SEND

12

MIC/LINE INPUT

3124

RR

AC IN

Channel Modules

Master Module Recorder Controls

Transport Controls

Multi-function Display

Front Panel

Connections

Rear Panel Connections

Power Connections

Controls and Connections

6

User’s Guide

Channel Modules

1

GAIN control

This rotary control adjusts the level of the signal from a microphone or

instrument plugged into the MIC/LINE INPUT connector (

h

).

2

Equalizer controls

These rotary controls are used to adjust the high, middle and low band

frequency levels. To help you select the “ﬂat” setting easily, each control

has a centre-detent at the “0” position.

HIGH

±

12 dB at 12kHz - shelving

MID

±

12 dB at 1kHz - peaking

LOW

±

12 dB at 80Hz - shelving

0

MIC/LINE

1

HIGH

GAIN

MID

LOW

AUX

PAN

1

3

2

4

LINE MIC

-12 +12

AUX 1 AUX 2

R

EVEN

L

ODD

MIC/

LINE

TAPE

ASSIGN

C

10

9

8

7

6

5

4

3

2

1

0

2

4

7

6

5

3

1

10k 20k1k10020

–15

–10

–5

0

5

10

15

FREQUENCY (Hz)

RESPONSE (dB)

50

5k2k500200

3

AUX controls

This rotary control is used to send the channel signal after the fader (

7

) to the auxiliary send buses.

Rotated fully counter-clockwise sends the signal to the AUX 1 bus, fully clockwise to the AUX 2 bus.

In the centre-detent “0” position, no signal is sent to either bus.

4

ASSIGN keys

These keys are used to select the group bus.

1-ASSIGN-2 selects the ﬁrst track group - groups 1 and 2.

3-ASSIGN-4 selects the second track group - groups 3 and 4.

Use the PAN control (

5

) to select the individual track groups.

5

PAN control

This rotary control sets the stereo pan position of the channel signal. It is also used to select the

individual track groups for recording.

1 2

3 4

7

Controls and Connections

User’s Guide

ODD/L: Rotated fully counter-clockwise sends the signal to the odd (1 or 3) numbered track of the

selected track group (ASSIGN keys

4

) and to the left channel of the STEREO bus.

EVEN/R: Rotated fully clockwise sends the signal to the even (2 or 4) numbered track of the

selected track group (ASSIGN keys) and to the right channel of the STEREO bus.

6

Input select (TAPE - MIC/LINE) key

This key selects the input source for the channel. Pressed in ( ), it selects the tape track

corresponding to the channel module (for example, the channel 1 key selects track 1). In the out

position ( ), the source is the MIC/LINE INPUT connector (

h

).

7

Channel fader

This linear control is used to set the channel level. For optimal performance and signal balance, the

fader should be positioned between 7 and 8.

Master Module

8

AUX RETURN - ASSIGN keys

These keys assign the signal from the AUX RETURN connectors

(

i

) to the selected group bus.

9

Auxiliary return LEVEL controls

These rotary controls adjust the level of the auxiliary return

signal.

0

MONITOR SELECT keys

These keys are used to select the group buses, the stereo bus,

and the cue bus signals. The signals are routed to the

MONITOR OUT (

f

) connectors on the rear panel and the

stereo PHONES (

d

) connector on the front of the MT4X.

GROUP

: These keys select groups 1 and 3 and groups 2 and 4

respectively. If you select both keys, groups 1 and 3 will be sent

to the left channel and groups 2 and 4 will be sent to the right

channel.

STEREO

: This key selects the stereo bus signal.

CUE

: This key selects the cue bus signals. These are the playback

signals direct from the cassette tracks. When you are recording,

the record signal is monitored.

A

CUE LEVEL controls

These rotary controls adjust the level of the signal from each

track before it is sent to the cue bus.

B

MONITOR/PHONES level control

This rotary control adjusts the volume level of the stereo

PHONES (

d

) connector and the MONITOR OUT (

f

)

connectors.

MASTER

1

2

3

4

GROUP

1

3

2

4

ASSIGN

1

3

2

4

ASSIGN

12

AUX RETURN

LEVEL

10

9

8

7

6

5

4

3

2

1

0

10

9

8

7

6

5

4

3

2

1

0

1

3

2

4

010

MIN MAX

CUE LEVEL

MONITOR

SELECT

STEREO

CUE

MONITOR/PHONES

C

B

0

9

8

A

Controls and Connections

8

User’s Guide

C

Master fader

This linear control is used to set the level of the master stereo bus. For optimal performance and

signal balance, the fader should be positioned between 7 and 8.

Recorder Controls

D

Cassette tape com-

partment

E

Multi-function display

This

FLD (Fluorescent

Light Display) shows

the

operating modes and signal

levels of the MT4X. See

"Multi-function Display" on

page 10.

F

TAPE SPEED CONTROL

These controls consist of a

rotary PITCH control and a

tape speed (4.8/9.5) select

key.

The PITCH control can

adjust the tape speed by

approximately

±

10%.

The tape speed (4.8/9.5)

select key is used to switch

the tape speed between

9.5 cm/sec and 4.8 cm/sec.

9.5 cm/sec will be selected

automatically when the

power is turned on.

Note:

The tape speed

cannot be changed while the

tape transport is in motion.

Press the STOP key (

W

),

then press the tape speed

select key.

NOISE REDUCTION SYSTEM

1234

TRACK

STEREO

TAPE

9.5 4.8

SYNC START IN OUT

AUTO PUNCH

MEMO

REPEAT

1

2

+9

6

3

0

3

6

10

-20

+9

6

3

0

3

6

10

-20

REC

1 2 3 4LR

REC SELECT

1 2 3 4

TAPE SPEED CONTROL

4.8 / 9.5

PITCH

O

AUTO

PUNCH I/O

CLEAR

SYNC

CHECK MEMO LOCATE1

MEMO LOCATE2

COUNTER

RESET

RETURN

TO ZERO

REPEAT

E

D

F

G

O PJ K L N QM

I

H

G

REC SELECT keys

These keys are used to arm the tracks for recording. When you press a REC SELECT key, the record

select indicator (

c

) for the corresponding track ﬂashes on the multi-function display (

E

).

H

REPEAT key

This key is used to start and cancel the repeat function. When the repeat function is active, the MT4X

will repeatedly playback a selection between two memory points set with the MEMO keys (

O

). See

"Repeat Function" on page 42.

9

Controls and Connections

User’s Guide

When the automatic punch-in/out function is active, the REPEAT key causes the MT4X to

immediately start the rehearsal mode. See "Using the automatic punch-in/out function" on page 21.

I

RETURN TO ZERO key

This key rewinds the tape to the point where the tape counter (

Y

) reads “0000”. The tape counter

ﬂashes while the tape rewinds.

J

dbx key

This key is used to turn the dbx‘ noise reduction system on and off. By default, the dbx™ system is

turned on when the MT4X is ﬁrst powered on.

The dbx™ system has no effect on track 4 when the SYNC key (

K

) is on. See "FSK recording" on

page 35.

K

SYNC key

This key defeats the dbx™ noise reduction system on track 4. This allows you to record FSK signals

onto the track. See "FSK recording" on page 35.

L

CLEAR key

This key clears the stored memory points. When automatic punch-in/out is active (the

AUTO PUNCH indicator

^

is illuminated), this key clears the current setting (but does not clear

the memory points).

M

AUTO PUNCH I/O key

This key is used to start and cancel the automatic punch-in/out function. See "Using the automatic

punch-in/out function" on page 21.

N

CHECK key

This key is used to verify the memory points. Press and hold this key and the press one of the

MEMO keys (

O

). The corresponding MEMO indicator (

a

) will ﬂash and the stored value will be

shown on the tape counter (

Y

).

O

MEMO (1, 2) keys

These keys store the current tape counter (

Y

) value as memory points. When you press one of these

keys, the corresponding MEMO indicator (

a

) will light and the point stored.

You can clear the memory points by pressing the CLEAR key (

L

), removing the cassette tape, or

turning off the power.

P LOCATE (1, 2) keys

These keys locate to the stored memory points. When you press one of these keys, the MT4X will

fast forward or rewind to the corresponding memory point.

Q COUNTER RESET key

This key resets the tape counter (Y) to “0000”.

Note: The repeat interval must be more than three counts on the tape counter (Y).

Note: The locate interval must be more than three counts on the tape counter (Y).

Controls and Connections 10

User’s Guide

Transport Controls

R REHE key and indicator

This key is used to perform a recording

rehearsal. While the LED indicator over the key

is illuminated, you can simulate a recording

session. This allows you to check recording

levels or practice punch-in/out without actually

recording.

STOPFFREWPLAYREC/PAUSEREHE

R S T U V W

S REC/PAUSE key and indicator

This key is used to record. Before you can actually record, you must arm the tracks with the

REC SELECT keys (G). Press this key to place the MT4X in record standby mode. Once you press

the PLAY key (T), recording will begin.

Press the key again to pause the recording.

T PLAY key and indicator

U REW key

This key is used to rewind the cassette tape.

V FF key

This key is used to fast forward the cassette tape.

W STOP key

Multi-function Display

This section details the indicators of the FLD (Fluorescent Light Display) multi-function display

(E).

X TAPE indicator

This indicator illuminates when a cassette tape is inserted in the cassette tape compartment. If you

press any of the transport keys before you have inserted a tape, the indicator will ﬂash.

TAPE

9.5 4.8

SYNC START IN OUT

AUTO PUNCH

MEMO

REPEAT

1

2

+9

6

3

0

3

6

10

-20

+9

6

3

0

3

6

10

-20

REC

1234 LR

\

]

X

^

a b

c

Z

[

Y

11 Controls and Connections

User’s Guide

Y Tape counter

This indicator displays tape position.

Z Level meters

These indicators display the signal level within a range of -20 dB to +9 dB. The individual tracks and

the stereo bus are displayed.

• When dbx™ is off, the normal signal limit is approximately 0 dB.

• When dbx™ is on, the normal signal limit is approximately +6 dB.

[ Tape speed indicator

These indicators show the current tape speed selection, either 9.5 cm/sec or 4.8 cm/sec. When the

MT4X is ﬁrst powered on, it defaults to 9.5 cm/sec.

\ dbx indicator

This indicator illuminates when the dbx™ noise reduction system is turned on.

] SYNC indicator

This indicator illuminates when SYNC key (K) has been switched on.

^ AUTO PUNCH indicators

These indicators show the status of the automatic punch-in/out function. See "Using the automatic

punch-in/out function" on page 21.

a MEMO indicators

These indicators illuminate when their respective memory points have been set.

b REPEAT indicator

This indicator illuminates while the repeat function is active.

c REC SELECT - TRACK indicators

These indicators ﬂash when you arm the corresponding track by pressing one of the REC SELECT

keys (G). The armed indicators switch from ﬂashing to illuminated when you press the REC/

PAUSE key (S).

Front Panel Connections

Note: The meters can be switched to peak hold. To switch peak hold on or off, press the

COUNTER RESET key (Q) while holding down the STOP key (W).

d PHONES connector

This 1/4” phone connector is used for a pair of stereo headphones

(8 Ω to 40 Ω).

e PUNCH I/O footswitch connector

This connector is used to plug in an optional footswitch (FC5) for

punch-in/out recording. See "Using the optional footswitch" on

page 28.

d e

PHONES PUNCH I/O

Controls and Connections 12

User’s Guide

Rear Panel Connections

f MONITOR OUT

connections

• Output impedance: 1 kΩ

• Nominal output level:

-10 dB (at 10 kΩ load)

These RCA/Phono connectors

are used to plug in a monitor

ampliﬁer or powered

loudspeakers. The same signal

which is output from the

PHONES connector (d) is also

output from these connectors.

AUX RETURN

2

L/MONO

1

L/MONO

STEREO OUT

LR

MONITOR OUT

LR

TAPE OUT

312SYNC/4

AUX SEND

12

MIC/LINE INPUT

3124

RR

gf h

i

j k

g STEREO OUT connections

• Output impedance: 1 kΩ

• Nominal output level: -10 dB (at 10 kΩ load)

These RCA/Phono connectors are used to output the ﬁnal stereo mixdown to the master recorder —

typically, a stereo tape deck.

h MIC/LINE INPUT connections

• Input impedance: 10 kΩ

• Nominal input level: -10 dB to -50 dB

These 1/4” phone connectors are used to input microphones, electronic instruments, and line-level

sources.

i AUX RETURN (1, 2) connections

• Input impedance: 10 kΩ

• Nominal input level: -10 dB (AUX RETURN - LEVEL control nominal)

These 1/4” phone connectors are used to input the signals from external effects devices and other

signal processors. If the external device is monaural, plug it into one of the L/MONO connectors.

j AUX SEND (1, 2) connections

• Output impedance: 1 kΩ

• Nominal output level: -10 dB (at 10 kΩ load)

These 1/4” phone connectors are used to output signals to external effects devices and other signal

processors.

k TAPE OUT (1 to 4/SYNC) connections

• Output impedance: 1 kΩ

• Nominal output level: -10 dB (at 10 kΩ load)

These RCA/Phono connectors are used to output the individual tracks directly from the recorder

section of the MT4X.

13 Controls and Connections

User’s Guide

Power Connections

l AC IN inlet

Connect the supplied power cord here.

m POWER switch

This switch turns the power on and off.

Note: Always make sure the Master fader (C) is set to “0” and the MONITOR/PHONES level control

is set to “MIN” when turning the MT4X on or off.

CAUTION (FOR CANADIAN MODEL)

TO PREVENT ELECTRIC SHOCK, MATCH WIDE BLADE OF PLUG TO WIDE SLOT, FULLY

INSERT.

ON

POWER

OFF

AC IN

l m

Example System 14

User’s Guide

2 Example System

NS-10M STUDIO

Master Recorder

Amplifier

AUX RETURN

2

L/MONO

1

L/MONO

STEREO OUT

LR

MONITOR OUT

LR

MIC/LINE INPUT

3124

TAPE OUT

312SYNC/4

AUX SEND

12

RR

Sequencer

Rhythm

Programmer

MIDI Converter

FSK Signal

MIDI

OUT

MIDI IN

MIDI OUT

Delay Processor

Multi-effect Signal Processor

Microphone

Bassguitar

Bass Effect Processor

Compressor

MIDI

OUT

MIDI IN

FC5 Footswitch

Headphones

Synthesizer

15

Recording Functions

User’s Guide

3 Recording Functions

The basic functions of multitrack recording are as follows:

Monitoring

The MT4X offers you a great deal of ﬂexibility in monitoring the status of your recordings. You can

monitor the individual channel groups, the stereo bus, the cue bus, or any combination.

Of these three monitor sources, you will probably ﬁnd the cue bus is the most useful. This bus allows you

to monitor the previously recorded tracks as well as new material independently of the mixer section. It is

sometimes very important to be able to listen directly to the tracks, for example, to compare different

mixer settings to the original signal.

You adjust the overall monitoring level with the MONITOR/PHONES control.

Monitoring

Monitoring the recording or playback to listen for mistakes or

unwanted distortion.

Initial recording

Recording the ﬁrst instrument or part.

Overdub recording

Recording additional instruments or parts while monitoring the

previously recorded tracks.

Punch-in/out recording

Correct mistakes or add short segments to an existing track.

Ping-pong recording

Bounce several existing tracks onto another track.

Mixdown

Mix the results of your multitrack recording onto a stereo master

tape.

You control monitoring with the MONITOR SELECT keys

0

:

GROUP

The GROUP keys allow you to monitor the group bus signals. If you only

press one key, you will hear monaural output. If you press both keys, you will

hear groups 1 and 3 in the left channel and groups 2 and 4 in the right channel.

The signals on the group buses go directly to the recorder.

STEREO

The STEREO key allows you to monitor the stereo bus signal. You can monitor

the signals from the four input channels as well as the AUX RETURN signal.

Some of these signals may not have been assigned to the group bus, allowing

you to listen to signals that will not be recorded.

CUE

The CUE key allows you to monitor the playback signals directly from the

cassette tracks. You can set the volume for each track with the CUE LEVEL

controls. The cue bus is monaural.

When you are recording, the record signal is monitored.

1

2

3

4

GROUP

MIN MAX

MONITOR

SELECT

STEREO

CUE

MONITOR/PHONES

Recording Functions

16

User’s Guide

Initial recording

The ﬁrst step in multitrack recording is to record the initial tracks. Usually, these are your rhythm tracks:

bassguitar, rhythm guitar, and drums.

Preparations for recording

1) Insert a cassette tape into the cassette tape compartment (

D

).

2) Connect the input source to the corresponding MIC/LINE INPUT connector for each channel.

3) Set the input select key (

6

) to the MIC/LINE position.

4) Rotate the GAIN control (

1

) to adjust the initial level of the input signal.

If you have plugged a microphone into the corresponding connector, rotate the control fully

clockwise to the MIC setting.

If you have plugged a synthesizer into the connector, or are running a bassguitar or guitar through a

signal processor (line level output), rotate the control fully counter-clockwise to the LINE setting.

Note:

Before you record anything, you must connect the MT4X to both an input source and a monitoring

system. See "Example System" on page 14.

Note:

This level setting is temporary — just to get a rough signal level based on the type of input you have

connected. Be aware that you could easily be sending a signal that is overloading the gain amplifier and

causing distortion. To set the final level, see steps 10 and 11.

Track to be recorded

a

b

a

n

d

o

n

p

o

e

p

l

e

Track 1Track 1

Track 2Track 2

Track 3Track 3

Track 4Track 4

17

Recording Functions

User’s Guide

5) Using the ASSIGN keys (

4

) and the PAN control (

5

) select the group bus you want the input

signal to go to.

If the PAN control is set to a position partway between L/ODD and R/EVEN, the input signal will

be sent to both the odd and even group buses.

If you press both ASSIGN keys, the input signal will be sent to at least two group buses.

6) Press the REC SELECT keys (

G

) for the tracks you want to record.

The corresponding REC SELECT - TRACK indicator (

c

) on the display will ﬂash.

Press the REC SELECT key again to cancel the selection.

7) Press the MONITOR SELECT - CUE key (

0

). Adjust the CUE LEVEL controls (

A

) for the selected

tracks. Set the monitor volume with the MONITOR/PHONES level control (

B

).

8) Press the COUNTER RESET key (

Q

) to set the tape counter (

Y

) to “0000”.

Set the recording levels

In order to obtain the best possible sound quality, it is very important to set optimal recording levels. If

you set the levels too low, you will be able to notice tape noise. If you set the levels too high, the tape will

be saturated and distortion will result. Therefore, you should set the recording levels to the highest level

before distortion sets in.

The MT4X is equipped with sensitive peak-hold level meters (

Z

). You can monitor the level of the

individual tracks and the stereo bus. Use the level meters in conjunction with the monitoring modes (see

"Monitoring" on page 15) to set your recording levels.

Press the

ASSIGN key:

and rotate the

PAN control:

The input signal is sent to the ﬁrst (odd) group.

Press the

ASSIGN key:

and rotate the

PAN control:

The input signal is sent to the second (even)

group.

Press the

ASSIGN key:

and rotate the

PAN control:

The input signal is sent to the third (odd)

group.

Press the

ASSIGN key:

and rotate the

PAN control:

The input signal is sent to the fourth (even)

group.

Group 1

→

Track 1

Group 2

→

Track 2

Group 3

→

Track 3

Group 4

→

Track 4

Tip:

You can ignore step 7 and use any monitor mode or combination that you are comfortable with. See

"Monitoring" on page 15.

1 2

3 4

REC SELECT

1 2 3 4

Recording Functions

18

User’s Guide

9) Press the REC/PAUSE key (

S

).

The indicator above the key lights and any ﬂashing REC SELECT - TRACK indicators will be

illuminated.

10) Set the channel fader (

7

) to the nominal level between “7” and “8”.

11) Adjust the GAIN control while watching the level meters.

• When dbx™ is off, adjust the gain control so that the +3 dB segment occasionally illuminates.

• When dbx™ is on, adjust the gain control so that the +9 dB segment occasionally illuminates.

Record the track

12) Press the PLAY key (

T

).

The indicator above the key lights and the MT4X starts the tape. Start playing.

13) When the track is complete, press the RETURN TO ZERO key (

I

) to stop and rewind the tape.

The indicators above the REC/PAUSE and PLAY keys switch off and the REC SELECT - TRACK

indicators resume ﬂashing.

Check the completed recording

Once the tape has rewound back to “0000” on the tape counter, you should check the recording.

14) Press the PLAY key to playback the tape.

15) If the recording needs to be redone, repeat the previous steps.

• If the problem with the recording was a musical error, press the REC/PAUSE key and repeat

steps 12 to 14.

• If the problem was due to incorrect recording levels or other engineering problems, adjust the

parameters by repeating steps 4 to 14.

16) When you are ﬁnished with an instrument, you should set the channel fader to “0”. You may even

want to disconnect the input source.

Note:

The meters display a range of -20 dB to +9 dB. If the meters exceed the normal limit momentarily, this is

usually perfectly acceptable. Cassette tape is reasonably forgiving of transients – and human hearing has difficulty

detecting the minor distortion that results. Where you start getting audible problems is when the meters are

constantly above the normal limit. You must lower the levels in order to maintain decent sound quality.

Note:

The MT4X can recall and display the maximum recording levels obtained during a session. See

"Recording Levels Function" on page 42.

Tip:

If your song starts with drums, bassguitar, and guitars all on the first bar, you will need to record a

count-in.

Tip:

You may want to use the STOP key (

W

) to stop the tape and mark a memory point. See "Memory

Functions" on page 41.

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