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.

Structure of the MT4X

The MT4X can be divided into three basic sections - the mixer, the recorder, and the bus lines which connect them:
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.
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.

Controls and Connections

1 Controls and Connections

Power Connections

Rear Panel Connections Channel Modules Master Module Recorder Controls

Front Panel Connections

Transport Controls

Channel Modules

GAIN control
This rotary control adjusts the level of the signal from a microphone or instrument plugged into the MIC/LINE INPUT connector

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

AUX controls

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

ASSIGN keys

These keys are used to select the group bus. l-ASSIGN-2 selects the first track group - groups 1 and 2. 3-ASSIGN-4 selects the second track group - groups 3 and 4. to select the individual track groups. Use the PAN control

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

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.
AUX RETURN - ASSIGN keys These keys assign the signal from the AUX to the selected group RETURN connectors bus. Auxiliary return LEVEL controls These rotary controls adjust the level of the auxiliary return signal. 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 connectors on the rear panel and the stereo PHONES 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. CUE LEVEL controls These rotary controls adjust the level of the signal from each track before it is sent to the cue bus.
MONITOR/PHONES level control This rotary control adjusts the volume level of the stereo PHONES and the MONITOR OUT connectors.

connector

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

Cassette tape compartment Multifunction display This FLD (Fluorescent Light Display) shows the operating modes and signal levels of the MT4X. See "Multifunction Display" on page 11. 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 then press the tape speed select key. STOP key User's Guide
Controls and Connections REC SELECT keys
These keys are used to arm the tracks for recording. When you press a REC SELECT for the corresponding track flashes on the key/ the record select indicator multi-function display

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. See "Repeat Function" on page 42. 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. Note: The repeat interval must be more than three counts on the tape counter

RETURN TO ZERO key

This key rewinds the tape to the point where the tape counter The tape counter flashes while the tape rewinds. reads "0000".

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. is on. See "FSK The dbx system has no effect on track 4 when the SYNC key recording" on page 35.

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.

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).

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.

CHECK key

This key is used to verify the memory points. Press and hold this key and the press The corresponding MEMO indicator will flash one of the MEMO keys and the stored value will be shown on the tape counter MEMO (1,2) keys value as memory points. When you These keys store the current tape counter will light and the press one of these keys, the corresponding MEMO indicator point stored. removing the You can clear the memory points by pressing the CLEAR key cassette tape, or turning off the power.
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.
Note: The locate interval must be more than three counts on the tape counter
COUNTER RESET key This key resets the tape counter

to "0000".

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. REC/PAUSE key and indicator This key is used to record. Before you can actually record, you must arm the tracks Press this key to place the MT4X in record standby with the REC SELECT keys mode. Once you press the PLAY key recording will begin. Press the key again to pause the recording. PLAY key and indicator REW key This key is used to rewind the cassette tape. FFkey This key is used to fast forward the cassette tape. STOP key

Multi-function Display

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

This indicator displays tape position.

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.
Note: The meters can be switched to peak hold. To switch peak hold on or off, press the COUNTER RESET key while holding down the STOP key 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 AUTO PUNCH indicators

has been switched on.

These indicators show the status of the automatic punch-in/out function. See "Using the automatic punch-in/out function" on page 21.
MEMO indicators These indicators illuminate when their respective memory points have been set.
REPEAT indicator This indicator illuminates while the repeat function is active.
REC SELECT - TRACK indicators These indicators flash when you arm the corresponding trade by pressing one of the REC SELECT keys The armed indicators switch from flashing to illuminated when you press the REC/PAUSE key
PHONES connector This 1/4" phone connector is used for a pair of stereo headphones (8 to 40 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.

Rear Panel Connections

MONITOR OUT connections Output impedance: 1 Nominal output level: -10 dB (at 10 load) These RCA/Phono connectors are used to plug in a monitor amplifier or powered is loudspeakers. The same signal which is output from the PHONES connector also output from these connectors. STEREO OUT connections

Output impedance: 1

Nominal output level: -10 dB (at 10 load) These RCA/Phono connectors are used to output the final stereo mixdown to the master recorder typically, a stereo tape deck
MIC/LINE INPUT connections

Input impedance: 10

Nominal input level: -10 dB to -50 dB These 1/4" phone connectors are used to input microphones, electronic instruments, and line-level sources.

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. 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.

Track to be recorded

Preparations for recording
1) 2) 3) 4) Insert a cassette tape into the cassette tape compartment Connect the input source to the corresponding MIC/LINE INPUT connector for each channel. Set the input select key Rotate the GAIN control to the MIC/LINE position. 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 counterclockwise to the LINE setting. 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.
5) Using the ASSIGN keys and the PAN control select the group bus you want the input signal to go to. Press the and rotate the The input signal is sent to the first ASSIGN key: PAN control: (odd) group. Press the ASSIGN key: Press the ASSIGN key: Press the ASSIGN key: Group 1 Group 2 Group 3 Group 4 and rotate the PAN control: and rotate the PAN control: and rotate the PAN control: -> Track 1 -> Track 2 -> Track 3 -> Track 4 The input signal is sent to the second (even) group. The input signal is sent to the third (odd) group. The input signal is sent to the fourth (even) group.
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

REC SELECT

for the tracks you want to record.
The corresponding REC SELECT - TRACK indicator 7)
on the display will flash.
Press the REC SELECT key again to cancel the selection. Press the MONITOR SELECT-CUE key Adjust the CUE LEVEL controls for the selected tracks. Set the monitor volume with the MONITOR/PHONES level control Tip: You can ignore step 7 and use any monitor mode or combination that you are comfortable with. See "Monitoring" on page 15.

16) Press the PLAY key to playback the tape and check the recording.
17) If the recording needs to be redone, repeat the previous steps.
To overdub another part, simply repeat steps 1 to 17.
Bassguitar track Track to be overdubbed Drum track

Punch-in/out recording

This technique is used to re-record short sections, correct mistakes, or add new sections to silent passages. You play your part while punching in and out to start and stop the recorder. For the greatest precision, you should use the advanced automatic punch-in/out features of the MT4X. However, it is reasonably easy to punch-in manually. If you have a footswitch, you can also punch in and out using your foot. This keeps your hands free for making music. Tip: You should ensure that the mixer and instrument settings are identical to the original recording. If you record a punch-in at a different volume level, for example, it will not blend into the previously-recorded track and your edit will be obvious. You will find keeping accurate track sheets invaluable to making invisible punch-in/out recordings. See "Tracking Sheet" on page 49. There are three basic methods for punch-in/out recording: Using the automatic punch-in/out function. Using the REC/PAUSE key and the PLAY key. Using the optional footswitch.
Using the automatic punch-in/out function With the automatic punch-in/out function, you specify the punch-in and punch-out locations. The operation is then carried out automatically. If you make a mistake, you can repeat the operation with precision. 1) Connect the input source, set the input select key, and adjust the GAIN control and channel fader so that the mixer setting is identical to the previous recording. Note: If you are using an optional FC5 footswitch, plug it into the PUNCH I/O footswitch connector. 2) Press the REC SELECT key for the track you want to punch-in.
The REC SELECT - TRACK indicator on the display will flash.
Note: You can skip step 2 at this point. However, you must select a track before you perform the actual recording.

Set the working points:

Post-roll is 10 counts on the tape counter at 9.5 cm/sec (5 counts at 4.8 cm/sec).
Note: When you perform a punch-in/out recording, you need to find a blank section of about 1 second for your punch-in and punch-out locations. This is because of the gap between the erase head and record/playback head. Otherwise you may find that you have accidentally erased material that was before or after the re-recorded segment. The pre-roll point - the punch-in/out operation starts playback at this point to give you a count-in. The punch-in point - recording begins. The punch-out point - recording ends. The post-roll point - the punch-in/out operation stops. 3) Fast-wind or rewind the tape to the location where you want to start the pre-roll. A location two or three measures before the punch-in point usually works well. Press to mark the pre-roll point. the AUTO PUNCH I/O key

At the punch-out location, the IN indicator and indicator above the REHE key will switch off, the OUT indicator will light, and monitor source will switch back to the tape.
At the post-roll point, the OUT indicator will switch off, the START indicator will begin flashing, and the tape is automatically rewound back to the pre-roll point. When tape is rewound, the AUTO PUNCH and START indicators will light and the indicator above the REHE key will flash rapidly.
If you are satisfied with the working points, you can move on to the next operation, to clear the points and the actual recording. Otherwise, press the CLEAR key repeat steps 3 to 6.

Recording

9) Press the REC/PAUSE key. The indicator above the REHE key will switch off and the indicator above the REC/ PAUSE key will flash rapidly. Note: If you skipped step 2, you need to use the REC SELECT key(s) to select a track (or tracks) before you record.
10) Press the PLAY key (or step on the footswitch) to play the tape. Get ready to play the punch-in part. At the punch-in location, the START indicator will switch off, the IN indicator will light, and the indicator above the REC/PAUSE key and the REC SELECT - TRACK indicator will light.
Play the punch-in part. At the punch-out location, the IN indicator and indicator above the REC/PAUSE key will switch off, the REC SELECT - TRACK indicator will flash, the OUT indicator will light, and monitor source will switch back to the tape.
At the post-roll point, the OUT indicator will switch off, the START indicator will begin flashing, the indicator above the PLAY key will flash in a pattern (check waiting condition), and the tape is automatically rewound back to the pre-roll point. When tape is rewound, the AUTO PUNCH and START indicators will light.

Check the recording

11) Press the PLAY key again to play back the tape. The MT4X will automatically play from the pre-roll point to the post-roll point. If the resulting recording is good, press the AUTO PUNCH I/O key to cancel the automatic punch-in/out function. The punch-in and punch-out points as well as the pre-roll and post-roll points are cleared. If you want to perform another automatic punch-in/out recording, you will have to start from step 3. If the resulting recording is not good, press the REHE key and repeat from step 7. If the pre-roll or post-roll points need to be changed, press the CLEAR key and repeat from step 3.

Rehearsal 6) Press the REHE key.
The indicator over the key lights and the flashing REC SELECT - TRACK indicators will be illuminated. Press the PLAY key to start the rehearsal.
The indicator above the key lights and the MT4X starts the tape.
Adjust the channel fader, PAN controls, and equalizer controls for each source channel.
If required, add effects using the AUX SEND and AUX RETURN controls and connectors. Adjust the effects for each channel.
Note: You cannot apply effects to the individual tracks nor can you adjust the sound balance once you have mixed them onto a single track. You must apply any effects, and adjust the equalization and balance, during the bounce-down recording. 9) Press the RETURN TO ZERO key to stop and rewind the tape.
10) Press the REC/PAUSE key. The indicator over the key lights and the REC SELECT - TRACK indicators will be illuminated. 11) 12) Press the PLAY key to start recording. The indicator above the key lights and the MT4X starts the tape. When the recording is finished, press the RETURN TO ZERO key to stop and rewind the tape. The indicators over the REC/PAUSE and PLAY keys switch off and the REC SELECT - TRACK indicators resume flashing.
13) 14) 15) Release the MONITOR SELECT - GROUP key corresponding to the destination track and press the CUE key. Adjust the CUE LEVEL control of the newly-recorded destination track. Press the PLAY key to start playback of the tape. If the resulting recording needs to be redone, repeat from step 6.
Overdubbing/ping-pong recording
(Bassguitar track) (Guitar track) (Drum track) Synth & Rhythm track
This technique is a combination of overdubbing (see "Overdub recording" on page 15) and ping-pong recording. 1) 2) 3) 4) 5) 6) Connect the input source for the overdubbing channel to its corresponding MIC/ LINE INPUT connector. Set the input select key to the MIC/LINE position. Rotate the GAIN control to adjust the level of the input signal. Use the ASSIGN keys and the PAN control to select the group bus for the destination track. Set up the source tracks as listed in the previous section ("Preparation for recording" on page 29). Press the REHE and PLAY keys to rehearse the overdub/ping-pong. Play along with the tape. Adjust the channel fader, PAN controls, and equalizer controls for each source and input channel. Press the RETURN TO ZERO key to stop and rewind the tape. Press the REC/PAUSE and PLAY keys to start recording. When the recording is finished, press the RETURN TO ZERO key to stop and rewind the tape. Check the recording.

7) 8) 9)

The corresponding REC SELECT - TRACK indicator on the display will flash.
If dbx system is on, press the SYNC key. The SYNC indicator will light.

Rehearsal 5)

Press the REHE key to put the MT4X into rehearsal mode.
Press the PLAY key to start playback. The MIDI instrument(s) will playback in sync with the data recorded on track 4. Note: If the MIDI instrument does not play correctly, you probably started the tape at
a point after the FSK signal began. You must ensure the tape plays back from before the start of the FSK track.
Play the overdub part along with the MIDI instrument(s) and the previously recorded tracks. 7) 8) Adjust the recording and monitoring levels while watching the level meters.
When you are satisfied with the levels, press the RETURN TO ZERO key to stop the rehearsal and rewind the tape.
9) Press the REC/PAUSE and PLAY keys to start recording. The MIDI instrument(s) will play automatically. Play the overdub part again.
10) When the recording is complete, press the RETURN TO ZERO key to stop and rewind the tape.
11) Press the PLAY key to start playback of the tape. If the resulting recording needs to be redone, repeat from step 5.
Recording a synchronized performance
You may want to record your MIDI instrument(s) while they are synchronized with the FSK signal recorded on track 4. The procedure is similar to the previous section (see "Overdubbing with a synchronized performance" on page 36).

Synchronized mixdown

You can use the FSK signal to synchronize MIDI instruments to the previously recorded tracks on the MT4X while you are creating a mixdown recording (see "Mixdown" on page 32). One of the advantages of this technique is that you can add multiple instruments to your mix without having to bounce-down tracks. To take full advantage of this technique, you may have to use an external mixer. Tip: A special feature of the MT4X is its TAPE OUT connectors. These allow you to send the track signals directly from the recorder to your external mixer.
1) connector into the Plug a compatible cable from the TAPE OUT - SYNC/4 MIDI/FSK input on your sequencer, rhythm machine, or converter. Set the connected MIDI instrument to receive the FSK signals from the MT4X. 2) Set any other connected MIDI instruments to MIDI clock mode to slave to the MIDI device receiving the FSK signals. Perform any other required setup on your MIDI instruments to ensure they perform correctly once the MT4X starts playing the FSK timecode. Please refer to the instruction manual supplied with your MIDI instrument for further setup details.

Symptom

The MT4X cannot be powered ON.

Possible Cause

The power cable is not correctly connected. The POWER switch has not been correctly set.

Solution

Make sure the power cable is connected to a suitable AC outlet and plugged into the AC IN connector on the MT4X's rear panel. Make sure the POWER switch on MT4X's rear panel is pressed ON.
Note: If the MT4X still cannot be powered ON, please contact your Yamaha dealer. Cannot record. The REC SELECT key is not set correctly. The setting of the ASSIGN key(s) is incorrect. The cassette is loaded incorrectly. The cassette's record protect tabs have been removed. Cannot hear a The corresponding input connected instrument. select key is set incorrectly. The fader or monitor is set incorrectly. Recordings sound noisy or distorted. Set the REC SELECT key correctly. Select the correct ASSIGN key(s) for the group and tracks you intend to use. Make sure the tape is firmly inserted in the cassette compartment. Make sure that the cassette's record protect tabs are intact.
Recordings sound dull, suffer from wow and flutter, or are of poor quality.
Recordings playback at the wrong pitch.
Tape sync does not function correctly.
Set the input select key to the correct position. Raise the fader for the input module. Make sure the MONITOR SELECT switch is set to CUE and adjust the CUE LEVEL control. The recording level is set Set the channel fader so that the level incorrectly. occasionally reaches +9 dB (with dbx ON or +3 dB with it OFF). If the signal level is too low, the recording may sound noisy. If it is too high, distortion may occur. The record/playback head Clean the record/playback head and and capstan is dirty. mechanism. See "Maintenance" on page 45. The wrong type of cassette Be sure to use high-quality Type II (High is being used. Bias, 70 s EQ) chrome cassettes. The cassette tape is Try a new cassette tape. defective. Set the PITCH control to the "0" centreThe PITCH control was detent position. reset during recording. The tape speed was reset. Press the tape speed select key to set the MT4X back to the correct tape speed. The SYNC key was not Press the SYNC key and connect the FSK pressed when the dbx source to track 4. system was ON. Re-record the FSK signal. Make sure the The FSK track was recorded at too low a level. recording level is set to about +3dB. Make sure the connections are correct. The MIDI-to-FSK converter is incorrectly connected.

Maintenance

The MT4X requires regular maintenance to remain in top operating condition. If you observe the following problems, you should clean and possibly demagnetize the unit: A drop in level at high frequencies. An increase in wow and flutter. Fluctuating sound or signal dropout. Excessive noise.
Cleaning the recording head and components
The record/playback head is in constant contact with the recording tape. Over time it will become coated with an oxide residue and need to be cleaned. The other components the capstan and pinchroller also tend to become coated with residue and dust particles. To clean the record/playback head and capstan, use a head-cleaning kit. These kits generally include specially-made cotton swabs and an isopropyl alcohol-based cleaning solution, and are available at audio and electronics shops. Follow the directions on the kit, carefully wiping the record/playback head and the capstan with a swab soaked in cleaning solution. It is best to clean the pinchroller with a non-alcohol based rubber cleaning solution, which is often included in the cleaning kits. Alcohol tends to dry out and corrode the rubber part of the roller. You should clean the record/playback head and capstan after every 10 hours of use.

Electrical Specifications

Connectors

MIC/LINE
-10 dB (at 10 or more -10 dB (at 10

8 to 40

load) load)

45mw + 45mw (at 40 load)

Frequency response (at nominal input and output) 20 Hz to 20kHz + l dB /- 3dB MIC IN - STEREO OUT LINE IN-STEREO OUT LINE IN - PHONES OUT
Specifications (continued)
Signal-to-Noise ratio (at nominal input and output) 68 dB / IHF-A 75 dB/IHF-A Distortion (1 kHz at nominal input and output) 0.1%/30kHz LPF 0.03%/30 kHz LPF Equalizer LOW MID HIGH MIC IN - STEREO OUT (GAIN control
LINE IN - STEREO OUT (GAIN control MDM) MIC IN - STEREO OUT (GAIN control MAX) LINE IN - STEREO OUT (GAIN control MIN) 12 dB at 80 Hz - Shelving 12 dB at 1 kHz - Peaking 12 dB at 12 kHz - Shelving
Recorder Frequency Response Signal-to-Noise ratio Distortion Channel separation Erase rate Noise reduction General Control jacks Power requirements
40 Hz to 18 kHz,3 dB (Tape speed - 9.5 cm/sec, dbx NR - OFF) 85 dB / IHF-A (at 3% distortion level, dbx NR - ON) 2.0% (400 Hz, -10 dB record level) 70 dB (1 kHz, -10 dB level, BPF, dbx NR - ON) 55 dB (1 kHz, 0 dB record level, dbx NR - OFF) dbx
PUNCH I/O (FC5) US and Canada General Power consumption 19 W Dimensions4 (WxHxD) 414.2 x 110.7 x 311.3 mm Weight Accessories
0 dB = 0.775 V rms 4.4 kg AC power cord
120 V AC, 60 Hz 230 V AC, 50 Hz
Specifications are subject to change without notice.
The dbx noise reduction system was manufactured based on a patent licence from THAT Corporation. dbx is a trademark of Carillion Electronics Corporation.

Block Diagram

Dimensions

Tracking Sheet

There is a tracking sheet template on the back cover of this manual. You should make a number of photocopies and use them to keep a log of your recording sessions.

Initial tracks

Recording the bassguitar and drum machine:
Recording the synthesizer and MIDI tone generator:

Recording the vocals:

Add equalization and effects and record to the master recorder:

Glossary

Auxiliary Bus The MT4X has two auxiliary buses. These buses are generally used to send signals to external signal processing units. Auxiliary Send Each channel module includes an AUX control, which selects an auxiliary bus and determines the amount of signal fed to corresponding the AUX SEND output connector.