TOA Electronics BA-800 User Manual

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OPERATING INSTRUCTIONS

DOUBLE CASSETTE PLAYER

BA-800

DOUBLE CASSETTE PLAY AMPLIFIER

BA-806

DOUBLE CASSETTE PLAY AMPLIFIER

BA-823

BA-800

BA-806

BA-823

Please follow the instructions in this manual to obtain optimum results from this unit. We also recommend that you keep this manual handy for future reference.

TOACorporation

CAUTION

TO REDUCE THE RISK OF ELECTRICAL SHOCK, DO NOT REMOVE COVER. NO USER SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.

THE LIGHTNING FLASH WITH ARROWHEAD WITHIN A TRIANGLE IS INTENDED TO TELL THE USER THAT PARTS INSIDE THE PRODUCT ARE A RISK OF ELECTRIC SHOCK TO PERSONS.

THE EXCLAMATION POINT WITHIN A TRIANGLE IS INTENDED TO TELL THE USER THAT IMPORTANT OPERATING AND SERVICING INSTRUCTIONS ARE IN THE PAPERS WITH THE APPLIANCE.

This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications.

— 2 —

CONTENTS

1. USER PRECAUTIONS

4

2. CASSETTE TAPES

5

3. NOMENCLATURE

 

3.1. BA-800 Front and Rear View

6 ~ 7

3.2. BA-806 Front and Rear View

8 ~ 9

3.3. BA-823 Front and Rear View

10~11

4. CONNECTIONS

 

4.1. BA-800 Connection Example

12

4.2. BA-806 Connection Example

13

4.3. BA-823 Connection Example

14

4.4. BA-806 Speaker Connection

15

4.5. BA-823 Speaker Connection

16

4.6. Timer Connection

16

5. OPERATION

 

5.1. Playback

 

(1) Playback Operation

17

(2) Stop Operation

17

(3) Tape Ejection/Loading

18

(4) Timer ON/OFF Control

18

(5) AGC Circuit

18

(6) Microphone Announcements

19

(7) Microphone-Activated Muting Circuit

19

(8) Signal and Peak Indicators

19

5.2. Track Sequence Selection

 

(1) Alternate A-A-B-B Playback

20

(2) Alternate A-B-A-B Playback

20

6. EXPANSION

 

6.1. Connections

 

(1) Expansion Using One BA-800

21

(2) Expansion Using Two BA-800's

22

6.2. Operation of An Expanded System

 

(1) Playback Operation

23~24

(2) Stop Operation

24

6.3. Timer Connection When Expanded

25

7. FAULT INDICATION

26

8. "BLANK SKIP" FUNCTION

26

9. CASSETTE PLAYER UNIT (CU-800) REPLACEMENT

27

10. MAINTENANCE

27

11. TROUBLESHOOTING

28

12. SPECIFICATIONS

28~29

13. ACCESSORIES

30

— 3 —

1. USER PRECAUTIONS

Avoid installing the unit near heaters, as well as locations exposed to direct sunlight as this may discolor or deform the unit's exterior.

Avoid using the unit in humid or dusty locations. Also, do not block air exhaust vents located on the top and side panels to prevent equipment failures. (BA-806/BA-823)

Keep beverages away from the unit as they may be spilt. Also, do not insert combustibles or metallic objects, such as hairpins and needles, into the unit to prevent fires, electrical shocks and equipment failures.

To avoid severe electrical shocks and possible catastrophic damage, never open the unit nor touch its internal components.

Always take hold of the plug to unplug it from the power outlet. Do not bend the power cord excessively nor place any heavy equipment on the cord as the cable may be damaged, resulting in fires or electrical shock.

Unplug the power cord from the wall outlet if the unit is to be stored for two weeks or more.

Avoid installing the unit on the unstable table or in vibratory locations as this may damage the unit or badly influence its operation.

Use a soft cloth to wipe off dust and grease from the front panel and case. When these parts are very dirty, dip the soft cloth in a small amount of neutral detergent, remove the dirt and wipe with a dry cloth. Never use thinner, benzine, alcohol, or other solvents, which may damage the unit's finish.

Dolby noise reduction manufactured under license from Dolby Laboratories Licensing Corporation. "DOLBY" and the double-D symbolare trademarks of Dolby Laboratories Licensing Corporation.

— 4 —

2. CASSETTE TAPES

Your tape player automatically detects the type of tape you are using, without having to switch a tape selector in accordance with the type of tape.

The following three different cassette tapes are usable:

(1)Normal tape

(2)Chrometape

(3)Metal tape

The C-120 tapes (120 minutes' recording time for both sides) and endless tapes are not recommended because their tapes are extremely thin and can often be slack or twist, leading to unstable operation.

The C-90 (90 minutes) and C-60 (60 minutes) are most commonly used.

To prevent damage of the tape and unstable operation, always store the cassette tapes in locations offering limited exposure to direct sunlight, high temperature, and magnetic effects (speakers and TV receivers).

If the slack or protruding tape is used, it may cause a tape twist around the pinch roller and capstan, or damage the tape. Before inserting the tape into the cassette player unit, take up the slack by inserting a pencil through the reel hub and turning it, as shown in the figure.

Good!!

Normal tape

Chrome tape

Metal tape

No!!

C-120

Endless tape

Good!!

C-90

C-60

No!!

— 5 —

3. NOMENCLATURE

[BA-800] < Front View >

Power

Switch

 

 

Press this switch

to turn power ON. To turn power OFF, press this switch

again.

Power

Indicator

(Green)

 

Lights when the power is switched ON, and goes out when switched OFF.

Play Button

Press this button when playing back a tape. For details, refer to "Tape Playback" on p.17.

Stop Button

Press this button to stop the tape run.

Tape Travel Indicator (Green)

The indicator of a cassette player unit in operation lights. It flashes when the cassette player unit fails. Refer to "Fault indication" on p.26.

Eject Button

Press this button to eject the tape.

Blank Skip Switch

Set this switch to ON to use the "blank skip" function. Set it to OFF when not using the function. Refer to p.26 for this function.

Track Sequence Selection Switch

Selects tape playback order. For details, refer to p.20 "Track Sequence Selection".

Auto-Reverse Cassette Player Unit (CU-800)

Cassette Tape Receptacle

Dolby NR Switch (OFF/ON)

Set this switch to ON when playing a tape recorded with Dolby B-type NR.

— 6 —

[BA-800] < Rear View >

Monaural Line Output Terminal

Monaural Line Output Volume Control

Stereo Line Output Connector

AGC Switch

Setting this switch to ON maintains the playback output volume constant regardless of variations in the tape recording level. For details, refer to "AGC Circuit" on p.18.

Link Input Connector (Signal)

Link Switch (ON/OFF)

Set this switch to ON when expanding.

Be sure to set the switch to OFF if not expanded.

Link Input Terminal (Control)

[Note] : Use and for expansion using the BA-800. Refer to "Expansion" on p.21~22.

Timer Input Terminal

Connects to an external timer. Refer to p.16.

Power Cord

Plug this cord into the wall AC outlet (120V AC).

Ground Terminal

Grounding point for the unit.

— 7 —

[BA-806]< Front View >

Power Switch

 

 

Press this switch

to turn power ON. To turn power OFF, press this switch

again.

Power Indicator (Green)

Lights when the power is switched ON, and goes out when switched OFF.

Play Button

Press this button when playing back a tape. For details, refer to "Tape Playback" on p.17

Stop Button

Press this button to stop the tape run.

Tape Travel Indicator (Green)

The indicator of a cassette player unit in operation lights. It flashes when the cassette player unit fails. Refer to "Fault indication" on p.26.

Eject Button

Press this button to eject the tape.

Blank Skip Switch

Set this switch to ON to use the "blank skip" function. Set it to OFF when not using the function. Refer to p.26 for this function.

Track Sequence Selection Switch

Selects tape playback order. For details, refer to p.20 "Track Sequence Selection".

Auto-Reverse Cassette Player Unit (CU-800)

Cassette Tape Receptacle

Dolby NR Switch (OFF/ON)

Set this switch to ON when playing a tape recorded with Dolby B-type NR.

Tape Volume Control

Microphone Volume Control

Make sure to set this control to zero when no microphone is connected to the BA-806.

Signal Indicator (Green)

Lights green when a signal is transmitted to the speaker output terminal. Refer to p.19.

Peak Indicator (Red)

Lights red when the output to the speaker approaches a clipping level. If steadily lit, turn down the volume. Also refer to p. 19.

— 8 —

[BA-806]< Rear View >

Microphone Input Terminal AUX-1 Input Connector AUX-1 Volume Control AUX-2 Input Terminal AUX-2 Volume Control

AGC Switch

Setting this switch to ON maintains the playback output volume constant regardless of variations in the tape recording level. For details, refer to "AGC Circuit" on p.18.

Tone Control (Bass/Treble)

Line Output Terminal

Link Input Connector (Signal)

Link Switch

Set this switch to ON when expanding the BA-806 using the BA-800.

Be sure to set the switch to OFF if not expanded.

Link Input Terminal

(Control)

[Note]

: Use

,and

for expansion using the BA-800. Refer to "Expansion" on p.21~22.

Timer

Input

Terminal

Connects to an external timer for ON/OFF control. Refer to p.16.

Speaker Output Terminal

Connects to the speaker. For Details, refer to p.15 "Speaker Connections".

Power Cord

Plug this cord into the wall outlet (120V AC).

Ground Terminal

Grounding point for the unit.

— 9 —

[BA-823]< Front View >

Power Switch

 

 

Press this switch

to turn power ON. To turn power OFF, press this switch

again.

Power Indicator (Green)

Lights when the power is switched ON, and goes out when switched OFF.

Play Button

Press this button when playing back a tape. For details, refer to "Tape Playback" on p.17.

Stop Button

Press this button to stop the tape run.

Tape Travel Indicator (Green)

The indicator of a cassette player unit in operation lights. It flashes when the cassette player unit fails. Refer to "Fault indication" on p.26.

Eject Button

Press this button to eject the tape.

Blank Skip Switch

Set this switch to ON to use the "blank skip" function. Set it to OFF when not using the function. Refer to p.26 for this function.

Track Sequence Selection Switch

Selects tape playback order. For details, refer to p.20 "Track Sequence Selection".

Auto-Reverse Cassette Player Unit (CU-800)

Cassette Tape Receptacle

Dolby NR Switch (OFF/ON)

Set this switch to ON when playing a tape recorded with Dolby B-type NR.

Tape Volume Control

Microphone Volume Control

Make sure to set this control to zero when no microphone is connected to the BA-823.

Signal Indicator (Green)

Lights green when a signal is transmitted to the speaker output terminal. Refer to p.19.

Peak Indicator (Red)

Lights red when the output to the speaker approaches a clipping level. If steadily lit, turn down the volume. Also refer to p.19.

— 10 —

[BA-823]< Rear View >

Microphone Input Terminal

AUX-1 Input Connector

AUX-1 Volume Control

AUX-2 Input Terminal

AUX-2 Volume Control

AGC Switch

Setting this switch to ON maintains the playback output volume constant regardless of variations in the tape recording level. For details, refer to "AGC Circuit" on p.18.

Balance Control

Tone Control (Bass/Treble)

Line Output Terminal

Link Input Connector (Signal)

Link Switch

Set this switch to ON when expanding the BA-823 using the BA-800.

Be sure to set the switch to OFF if not expanded.

Link Input Terminal

(Control)

[Note] : Use

and

for expansion using the BA-800. Refer to "Expansion" on p.21~22.

Timer Input

Terminal

Connects to an external timer for ON/OFF control. Refer to p.16.

Speaker Output Terminal

Connects to the speaker. For Details, refer to p.16 "Speaker Connections".

Power Cord

Plug this cord into the wall outlet (120V AC).

Ground Terminal

Grounding point for the unit.

— 11 —

4. CONNECTIONS

4.1.BA-800 Connection Examples

[Note]: Be sure to plug the power cord into the 120VAC wall outlet.

If the power voltage differs, the equipment may not work properly or fires or electrical shocks may result.

BA-800(for extension)

PROGRAM TIMER

BA-800

120VAC, 60Hz

GROUND

STEREOAMPLIFIER

AMPLIFIER

— 12 —

4.2. BA-806 Connection Examples

[Note]: Be sure to plug the power cord into the 120VAC wall outlet.

If the power voltage differs, the equipment may not work properly or fires or electrical shocks may result.

MICROPHONE

BA-800(for expansion)

PROGRAM TIMER

BA-806

120VAC, 60Hz

GROUND

To amplifier line input

To amplifier or mixer line output

SPEAKER

CD PLAYER or To tape recorder playback output

AMPLIFIER

AMPLIFIER

CD PLAYER

 

CASSETTE DECK

— 13 —

4.3. BA-823 CONNECTION EXAMPLE

[Note]: Be sure to plug the power cord into the 120VAC wall outlet.

If the power voltage differs, the equipment may not work properly or fires or electrical shocks may result.

MICROPHONE

BA-800(for expansion)

PROGRAM TIMER

To amplifier

line input

GROUND

120VAC, 60Hz

To amplifier or mixer line output

AMPLIFIER

CD PLAYER or To tape recorder playback output

SPEAKER(RIGHT)

AMPLIFIER

CD PLAYER

CASSETTE DECK

SPEAKER(LEFT)

— 14 —

4.4. Speaker Connections [BA-806]

Low-impedance speakers (4 to 16

OUTPUT

Low impedance speakers

(4 to 16

When connecting two or more speakers, make sure that the total speaker impedance is greater than 4 .. (If two

8 speakers are connected in parallel, the total impedance is 4 ).

High-impedance speakers have to be connected to the 70V or 25V terminal.

1. Connection to the 70V terminal

Parallel connection

(Total impedance has to be greater than 83 or total wattage less than 60W.)

2. Connection to the 25V terminal

Parallel connection

(Total impedance has to be greater than 10

* Be sure to replace the speaker output terminal cover after speaker connection completion.

— 15 —

4.5. Speaker Connections [BA-823]

OUTPUT

SPEAKER (RIGHT)

SPEAKER (LEFT)

 

Low impedance speakers (4 to 16

The type of speakers connectable to each channel are those with impedance of over 4 . When connecting multiple speakers, the total speaker impedance must be over 4. If under 4, a protective circuit is triggered to prevent the equipment's normal operation, or equipment failures will occur.

Use speakers with permissible input of over 30W. Note that if the power exceeding the permissible input is applied to the speaker, the speaker may be damaged.

4.6. Timer Connections [BA-800, BA-806 and BA-823]

Connect the rear-mounted terminals to the timer's no-voltage contacts.

Make duration needs to be 200msec or more.

— 16 —

Set the power switch

5. OPERATION [BA-800, BA-806 and BA-823]

Check for proper connection of the power cord, speaker cables, etc.

Set each volume control to minimum position.

Set the tone control to center position. (BA-806/BA-823)

Set each of the following switches to desired position:

AGC switch: Refer to p.18.

Track sequence selection switch: Refer to p.20.

Blank skip switch: Refer to p.26.

Link switch: Refer to p.21~22.

Set the Dolby NR switch to ON to play a tape recorded with Dolby B-type noise reduction.

5.1.Playback

(1)Playback Operation

to ON, and confirm that the power indicator lights.

Insert the tape into the tape receptacle.

Press the play button

Play begins, and the tape travel indicator (TAPE 1 or TAPE 2) lights.

Adjust the tape volume control. (BA-806/BA-823)

Adjust the BA-800's monaural line output volume control to an appropriate level in advance when using the

BA-800's mono line output.

Adjust the tone control.

[Note]: When tapes are inserted into both cassette player units (TAPE 1 and 2), play begins with the TAPE 1 cassette player unit.

(2) Stop Operation

To stop tape motion during playback, press the stop button

The tape travel indicator is extinguished.

— 17 —

(3) Tape Ejection and Loading

Press the eject button to eject the tape. When inserting a new tape, set the Dolby NR switch to ON or OFF depending on whether or not the tape has been recorded using the Dolby NR.

[Note]: (1) Tape can be ejected only when the power is ON. (It cannot be ejected if power is OFF.)

(2)When both cassette player units (TAPE 1 and 2) are loaded with tapes, if the tape being played back is ejected, other tape is played back.

TAPE 1 ejected.

TAPE 2 played back

TAPE 2 ejected.

TAPE 1 played back

(3)Do not block tape actions when ejected, because this may result in equipment failures or cause the fault indication facility to malfunction.

(4)When ejecting and instantly re-loading the tape, wait until the tape is completely ejected. Your attempt to force the tape in the cassette player unit while it is still being ejected may lead to equipment failures or malfunctions of the fault indication facility.

(5)When the fault indication facility malfunctions, it can be returned to normal by pressing the eject button.

(4)Timer ON/OFF Control

Confirm that the program timer is connected properly, as indicated on p.16.

Set the power switch to ON, and confirm that the power indicator lights.

Insert a tape.

Play begins when the player's timer ON terminals are shorted by the timer.

Play stops when the player's timer OFF terminals are shorted by the timer.

[Note]: (1) The timer ON/OFF control can be performed only when the power is ON. Be sure to set the power switch to ON before inserting the tape.

(2)Adjust the tape volume to an appropriate level in advance. (BA-806/BA-823)

When using a timer to activate the BA-800, adjust the monaural line output volume control to an appropriate level in advance.

(5)AGC Circuit [BA-800, BA-806 and BA-823]

Your tape player has a built-in AGC (Automatic Gain Control) circuit to maintain the tape output volume constant regardless of variations in the recording level of each tape. This eliminates the necessity of adjusting the volume control every time tapes are swapped.

To use the AGC circuit, set the AGC switch to ON. Set the switch to OFF if the function is not required.

— 18 —

(6) Microphone Announcements [BA-806 and BA-823]

Connect a microphone to the microphone input terminal located on the rear panel.

Set the power switch to ON, and confirm that the power indicator lights.

Adjust the microphone volume control.

Making an announcement during tape play triggers an internal microphone-activated muting circuit, and the tape output volume automatically decreases by approximately 20dB. The tape volume automatically returns to a previous level after announcement completion. For the microphone-activated muting circuit, refer to Item below.

[Cautions]

(1)Make sure to set this control to zero when no microphone is connected to the BA-806 or BA-823.

(2)Be sure to set the microphone switch to OFF after announcement completion, because the muting circuit is activated by ambient noise if the switch is left ON.

(7) Microphone-Activated Muting Circuit [BA-806 and BA-823]

The microphone and AUX 2 inputs are provided with the muting circuit which automatically reduces the tape output volume and AUX 1 volume by approximately 20dB when a microphone announcement is made through such inputs. The tape output volume gradually returns to its original level after the announcement is completed.

[Note]: The microphone-activated muting circuit does not work when the microphone volume control is set to minimum position.

(8) Signal and Peak Indicators [BA-806 and BA-823]

During tape play or microphone announcement, see to it that the peak indicator (red) does not light. If it lights, this indicates that the output is distorted and so, turn down the volume.

The signal indicator (green) lights when a signal is output to the speaker. Check amplifier operation with this indicator.

— 19 —

5.2.Track Sequence Selection [BA-800, BA-806 and BA-823]

When both cassette player units (TAPE 1 and 2) are used, the tapes can be played back in order of side A-A-B-B or A-B-A-B, which is selectable by means of the track sequence selection switch.

(1) Alternate A-A-B-B Playback

With the track sequence switch set to A-A-B-B position, both cassette player units first play back side A of their respective tapes, and then side B, starting with TAPE 1. This is repeated between both cassette player units in the following sequence:

START

 

Side A of TAPE 1

Side A of TAPE 2

Side B of TAPE 1

Side B of TAPE 2

(2) Alternate A-B-A-B Playback

If the track sequence selection switch is set to A-B-A-B position, both cassette player units alternately play back both sides (A and B) of their respective tapes before they are switched to each other.

[Note]: (1) Side A of the tape mentioned above refers to the side to play first. Therefore, it is not the same as that which is shown on the tape.

(2)Be sure to set the link switch to OFF when using a BA-800 (BA-806 or BA-823) individually.

If set to ON, the tape stops after TAPE 2 playback is finished.

— 20 —

6. EXPANSION

Connection of the BA-800 (BA-806 or BA-823) to the BA-800 increases the number of usable cassette player units from two to four, which repeat plays in turn.

6.1.Connections

(1)Expansion using one BA-800

Set both link switches to ON.

BA-800 (for expansion)

BA-800 (BA-806 or BA-823)

Playback order of an expanded system

When the BA-800 (BA-806 or BA-823) is expanded using a BA-800 unit, play begins with TAPE 1 (TAPE 2

if TAPE 1 is not loaded with a tape) of the unit of which play button

has been pressed, and is switched as

follows depending on the track sequence selection switch setting.

 

(a) When the sequence selection switch of both units is set to A-A-B-B position

(b) When the sequence selection switch of both units is set to A-B-A-B position

— 21 —

(2) Expansion using two BA-800's

Set all link switches to on.

2nd BA-800 for expansion

1st BA-800 for expansion

BA-800 (BA-806 or BA-823)

— 22 —

6.2.Operation of an Expanded System

Follow the procedures below to operate the BA-806 expanded by using two BA-800 units. (The operation is quite similar to that which is required when using two BA-800 units to expand the BA-800, BA-806 or BA-823.)

(1) Playback Operation

Set all power switches to ON.

Insert tapes into cassette player units to use. Each cassette player unit plays in turn, starting with TAPE 1

(TAPE 2 if TAPE 1 is not loaded with a tape) of the unit of which play button has been pressed.

[Example 1]

The BA-800's play button is pressed during the BA-806's play.

2nd BA-800 for expansion

1st BA-800 for expansion

BA-806

Speaker

The optional BA-806's play is not interrupted.

[Example 2]

The 2nd BA-800's play button is pressed while the 1st BA-800 unit is playing.

2nd BA-800 for expansion

1st BA-800 for expansion

BA-806

The 1st BA-800 still continues to play.

Speaker

 

— 23 —

[Note]: (1) If the play button

of other connected player is pressed during playback, its tape starts to run

and tape travel indicator lights. In this event, the highest priority is given to the BA-806, followed by the BA-800 connected directly to the BA-806, and the remaining BA-800 unit.

(2)Even if the BA-800's play button is left ON in the above examples, tapes can be switched from one cassette player unit to another. To prevent incomplete tape to tape switching (play begins from the middle of the tape), however, do not press the play button of any connected component during play.

(3)Be sure to set the power switch of all connected BA-800 units to ON. If a certain unit has its power switch set to OFF, the tape stops at that unit, making continuous play impossible any longer.

(2)Stop Operation

Press the stop button of the component in play mode.

— 24 —

6.3. Timer Connection When Expanded

Even when the system is expanded, a timer can be used to control ON/OFF operation of tape playback. In this event, play begins with the component the timer is connected to.

[Note]: Connect all the timer stop input terminals to each other. Otherwise, the tape may not stop.

Timer Connection Example

No-voltage make contact of program timer, etc.

2nd BA-800 for expansion

1st BA-800 for expansion

Connect all the timer stop input terminals.

BA-806 (BA-823)

— 25 —

7. FAULT INDICATION [BA-800, BA-806 and BA-823]

If a cassette player unit (TAPE 1 or 2) malfunctions, the corresponding tape travel indicator flashes.

 

Tape travel indicator

TAPE 1

TAPE 2

Flashes when TAPE 1 deck malfunctions.

Flashes when TAPE2 deck malfunctions.

If either indicator flashes, make no further attempt to use the corresponding cassette player unit. Eject the tape immediately and replace the faulty cassette player unit with a new one. The cassette player unit of other indicator that does not flash can still be used.

[Note]: The tape travel indicator also flashes when the cassette player unit is removed, but this does not infer real malfunction. You can still use other cassette player unit unless its tape travel indicator is flashing. For cassette player unit (CU-800) replacement, refer to p.27.

8. "BLANK SKIP" FUNCTION [BA-800, BA-806 and BA-823]

Your tape player comes with a Blank Skip function. If an unrecorded section in the tape lasts for ten seconds or more during playback, the tape is automatically sent forward at top speed to skip the unrecorded section to re-start playback from the top of a next piece of music.

The Blank Skip function can be made available by setting the blank skip switch to ON.

[Note]: The function may operate in the middle of playback if an extremely low recording level tape is used or if the tape contains a relatively long low signal level section, such as pianissimo. In such cases, set the blank skip switch to OFF.

— 26 —

9.CASSETTE PLAYER UNIT (CU-800) REPLACEMENT

Revolving parts of a unit mechanism are impaired with extended use, downgrading the sound quality. The CU800's life is approximately 2,000 hours, which can be made 4,000 hours (500 days for 8 hours per day) by using two units alternately. Whenever possible, attempt to use both units of the BA-800, BA-806 or BA-823 to make overall unit life longer. If the unit is used for more than 1,000 hours and the sound quality deteriorates, replace it with a new unit. For cassette player unit (CU-800) replacement, contact your nearest TOA dealer.

10.MAINTENANCE

Cleaning the head section

The head section is comprised of the heads, capstans and pinch rollers, and with extended use these parts accumulate dust, dirt, and grease easily as the tape runs. If this assembly gets dirty, the contact between the tape and the surface of the heads is impaired and this not only downgrades the sound quality, but causes a tape twist around the pinch roller and capstan. To prevent this, clean the head section and surrounding parts regularly once a month.

Demagnetizing the heads

The recording head becomes magnetized when you use the player for prolong periods of time. This results in noise being generated and the treble dropping off. The head should therefore be regularly demagnetized with the commercial head eraser.

— 27 —

11.TROUBLESHOOTING

Although some failures can be traced to legitimate mechanical faults, some are in fact the results of improper maintenance, tape defects or lack of experience in operating the player. If you think that there is a failure, refer first to the following checklist.

-Is the BA-800, BA-806 or BA-823 properly connected to the speaker and other components ?

-Is the power cord securely plugged in the power outlet ?

-Are switches and volume controls placed in the proper positions ?

-Is the microphone switch set to ON ?

Symptom

Tape does not run.

No playback sound.

High frequencies are weak.

Sound is unsteady. Excessive noise.

Cause

Remedy

AC cord is not plugged in.

Plug cord in correctly.

Tape is inserted improperly.

Remove tape and insert properly.

Output cords are connected improperly.

Connect cords correctly.

Tape volume control is set to leftmost

Turn control to suitable position.

position.

 

Heads are dirty.

Clean capstan and pinch roller with a commercial

Heads are magnetized.

cleaning tape.

Capstan is dirty.

 

Tape is old.

Renew the tape.

12.SPECIFICATIONS

<BA-800 >

Power Requirements

Power Consumption

Outputs.

Distortion

Frequency Response

S/N Ratio

Usable Tape

Tape Speed

Wow and Flutter

Playing System

Finish

Dimensions

Weight

120VAC, 60Hz.

8W

Mono line out : 600 1V, balanced

Stereo line out : 10k 300 mV, unbalanced (L/R)

Less than 3% (Mono line out : 1000 Hz/1 V)

50~15,000 Hz

50 dB (Dolby NR : OFF) (AGC OFF)

60 dB (Dolby NR : ON) (AGC OFF)

Compact cassette tapes

4.76cm/sec

Less than 0.2% (WRMS)

Auto Reverse

Front panel : Aluminium, alumite process (black)/ABS resin Case : Steel color plate (black)

420(W)x97(H)x300(D)mm (16.6(W) x3.8 (H) x11.9(D)in.)

Approx. 6.2kg (13.7 Ib.)

* Specifications are subject to change without notice.

— 28 —

Power Requirements

Power Consumption

Output Power

Distortion

Frequency Response

Tone Controls

Inputs

Outputs

S/N Ratio

Usable Tape

Tape Speed

Wow and Flutter

Playing System

Finish

Dimensions

Weight

Power Requirements

Power Consumption

Output Power

Distortion

Frequency Response

Tone Controls

Inputs

Outputs

S/N Ratio

Usable Tape

Tape Speed

Wow and Flutter

Playing System

Finish

Dimensions

Weight

120V AC, 60Hz.

100W

60W

Less than 1 % (1000Hz at rated output on AUX 2 input)

TAPE : 50~15,000 Hz

AUX 2 : 50~20,000 Hz ( ± 3 dB)

BASS

:100Hz±10dB

TREBLE : 10,000 Hz

±10 dB

MIC

 

:200

1mV, balanced

AUX 1

: 50k

100m V, unbalanced

AUX 2

:600

1V, unbalanced

LINK IN (signal)

:10k

150m V, unbalanced

Speaker output : 4

 

 

 

10

: 25V

 

 

83

: 70V

Line output : 600

1V, unbalanced

TAPE : 50 dB (Dolby NR : OFF) (AGC OFF)

 

60 dB (Dolby NR : ON) (AGC OFF)

MIC

:60dB

 

 

Compact cassette tapes

4.76cm/sec

Less than 0.2% (WRMS)

Auto Reverse

Front panel : Aluminium, alumite process (black)/ABS resin

Case

: Steel color plate (black)

420(W)x97(H)x350(D) mm (16.6 (W) x 3.8 (H) x13.8 (D) in.)

Approx. 10.3 kg (22.7 Ib.)

120V AC, 60Hz.

100W

30W + 30W (Stereo)

Less than 0.5% (1000 Hz at rated output on AUX 2 input)

TAPE : 50~15,000 Hz

AUX 2 : 50~20,000 Hz( ±3 dB)

BASS : 100Hz±10dB

TREBLE: 10,000 Hz ±10 dB

MIC

:200

1mV, balanced

AUX 1

: 50k

100 mV, unbalanced

AUX 2

:600

1V, unbalanced

LINK IN (signal)

:10k

150 mV, unbalanced

SPEAKER OUTPUT : L : 4

R :4

LINE OUTPUT : 600 1V,unbalanced

TAPE : 50 dB (Dolby NR : OFF) AGC OFF 60 dB (Dolby NR : ON) AGC OFF

MIC :60dB

Compact cassette tapes

4.76cm/sec

Less than 0.2% (WRMS)

Auto Reverse

Front panel : Aluminium, alumite process (black)/ABS resin

Case

: Steel color plate (black)

420(W) x97(H) x350(D) mm (16.6 (W) x 3.8 (H) x 13.8 (D) in.)

Approx. 8.7kg (19.2 lb.)

— 29 —

13. ACCESSORIES

 

BA-800

1

Stereo pin cord

Warranty card

1

Operating instructions

1

BA-803,806

1

Warranty card

Operating instructions

1

— 30 —

TOA Corporation

133-12-107-60

 

KOBE, JAPAN