Toa M-243 Bedienungsanleitung

OPERATING INSTRUCTIONS

STEREO MIXER M-243

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.

TABLE OF CONTENTS

HANDLING PRECAUTIONS

GENERAL DESCRIPTION

FEATURES

NOMENCLATURE AND FUNCTIONS

INTERNAL SWITCH SETTINGS

BLOCK AND LEVEL DIAGRAM

DIMENSIONAL DIAGRAM

SPECIFICATIONS

Please f ll w the instructi ns in this manual t btain the ptimum results fr m this unit.

We als rec mmend that y u keep this manual handy f r future reference.

TOA C rp rati n

3,4

1. HANDLING PRECAUTIONS

Operating v ltage range is AC mains ±10% (50/60Hz).

Keep c rr sive chemicals and beverages away fr m the unit as they may be spilt.

When any irregularity is f und, be sure t c ntact y ur nearest TOA dealer. Make n further attempt t use

the unit t av id electrical sh cks.

2. GENERAL DESCRIPTION

The TOA M-243 is a 19" rack m untable (1 unit size) stere mixer that c mes with tw m naural inputs, f ur

stere inputs, ne stere utput and tw m naural utputs.

3. FEATURES

Tw m naural inputs, f ur stere inputs, ne stere utput, and tw m naural utputs. Each input signal

can be assigned t three utputs.

Sub-input f r each bus line t the stere utput and tw m naural utputs.

Micr ph ne input r line input selectable f r m naural input depending n the signal level. Internal limiter

minimizes signal dist rti n due t excessive input. Internal switches perate a high-pass filter functi n in the

input circuit, and a pad (20dB) functi n in the micr ph ne input.

Signal clip indicat r.

Aut matic muting functi n (can be switched n and ff) detects the m naural input signal and aut matically

mutes the stere utput signal.

Stere utput has a rec rding utput and equalizers f r high and l w frequencies.

Tw m naural utputs als functi n as stere sum utputs by internal switch setting.

Assign butt n c ver serves as a writing bl ck.

Kn bs supplied in different c l rs f r easy ass ciati n with their respective c ntr ls.

4. NOMENCLATURE AND FUNCTIONS

[Front P nel]

Input level c ntr ls [1-6] (1-2 : M naural input,

3-6 : Stere input)

These c ntr ls adjust the input level f each

channel.

Assign butt ns [ST, 1, 2]

These butt ns select the utput t which the

p st-input level c ntr l signals are delivered.

ST : Stere utput

1 : MONO 1 utput

2 : MONO 2 utput

Assign butt n c ver

This c ver pr tects the assign switch setting

fr m accidental change. It can als be used as

a writing bl ck.

Clip indicat r [PEAK]

This lamp lights when the signal reaches 3dB

bel w clipping. Adjust the signal level using

individual input level c ntr ls s that this lamp

lights nly accidentally.

Mute ON/OFF butt n [AUTO MUTE]

This butt n turns n the muting facility when

pressed. (The muting indicat r will light.) By

detecting the signal assigned t the stere

utput fr m channel 1 r 2, the signal assigned

t stere utputs fr m channel 3 thr ugh

channel 6 is muted. (The signal assigned t the

m naural utput is n t muted.)

Equalizer c ntr ls [EQ : LOW, HIGH]

These c ntr ls adjust stere utput signal t ne.

LOW : L w frequency adjustment

(20Hz, ±15dB shelving)

HIGH : High frequency adjustment

(20kHz, ±15dB shelving)

Stere utput level c ntr l [STEREO]

This c ntr l adjusts a stere utput level.

M naural utput level c ntr ls [MONO 1, 2]

These c ntr ls adjust each m naural utput

level.

P wer butt n and p wer lamp [POWER]

This butt n switches p wer n (the p wer lamp

lights) and ff (the lamp is extinguished).

[Re r P nel]

F r technical details f each input and utput, refer t the secti n "8. SPECIFICATIONS".

M naural input terminals (1,2) [MIC, LINE]

Select either MIC r LINE f r c nnecti n. If b th are c nnected, LINE input takes precedence.

Stere input jacks (3-6) [L , R]

Only CH6 RCA jacks are c nnected in parallel with ph ne jacks.

Stere sub-input terminals [SUB IN STEREO L / M, R]

Signals fr m these terminals are assigned t stere utput buses that g t the stere utput. C nnecting

nly "L" will input t b th "L" and "R".

M naural sub-input terminals [SUB IN MONO 1,2]

Signals fr m these terminals are assigned t m naural utput buses that g t m naural utput 1 and 2.

Rec rding utput jacks [REC L , R]

These stere rec rding jacks utput the signal fr m the stere utput bus.

Stere utput jacks [STEREO OUT L , R]

M naural utput jacks [MONO OUT 1, 2]

These jacks als functi n as stere sum utputs by internal switch setting. (Refer t the secti n

"5. INTERNAL SWITCH SETTINGS".)

AC inlet

C nnect the supplied p wer c rd t this inlet.

5. INTERNAL SWITCH SETTINGS

[CAUTION]

THESE SERVICING INSTRUCTIONS ARE FOR USE BY QUALIFIED PERSONNEL ONLY. TO AVOID

ELECTRIC SHOCK DO NOT PERFORM ANY SERVICING OTHER THAN THAT CONTAINED IN THE

OPERATING INSTRUCTIONS UNLESS YOU ARE QUALIFIED TO DO SO. REFER ALL SERVICING TO

QUALIFIED SERVICE PERSONNEL

The M-243 mixer enables the f ll wing functi ns by setting internal switches.

(1) [PAD switch]

Setting this switch t IN p siti n will place a pad (20dB) in the m naural input (MIC input).

(2) [HPF switch]

Setting this switch t IN p siti n will place a high-pass filter (300Hz, -6dB/ ct) in the m naural input.

(3) [GND switch]

Setting this switch t LIFT p siti n will cut a gr und l p which generates n ise.

(4) [MONO1] nd [MONO 2] switches

Setting each switch t ST SUM p siti n will change each m naural utput t stere sum utput.

How to open the mixer c se <Switch loc tion>

Rear Panel

1. Set the p wer switch t OFF and unplug the p wer c rd fr m

a wall utlet.

2. Rem ve case fixing screws (10 places).

4 each at left and right m unting brackets = 8

1 each at b th sides (back f side panel) = 2

3. Rem ve the case.

4. Replace the case after setting change c mpleti n.

[Prec utions] Fr nt Panel

T av id electrical sh cks and equipment failures, d n t t uch the internal c mp nents ther than switches.

Each internal switch is fact ry-preset t the reverse directi n f that which is indicated ab ve by the arr w.

6. BLOCK AND LEVEL DIAGRAM

7. DIMENSIONAL DIAGRAM

8. SPECIFICATIONS

Inputs nd Outputs

N menclature

CH1, CH2

(MONO

INPUT)

MIC

(PAD)

LINE

CH3~CH6

(STEREO INPUT L, R)

SUB

INPUT

STEREO

(L/M,

MONO

(1,2)

STEREO OUTPUT

(L,R)

MONO OUTPUT

(1,2)

REC OUTPUT

(L,R)

Rated level

6 0

dB*

-40dB*

1 0

dB*

10dB*

+4dB*

4dB*

+4dB*

1 0

dB*

Maximum level

3 0

dB*

- 10dB*

—

+20 d B*

+20 dB*

+6dB*

Impedance

C nnect r type

XLR TYPE

(ELECTRICAL BAL)

PHONE (UNBAL)

RCA PIN (UNBAL)

(CH6••••& PHONE)

PHONE (UNBAL)

RCA PIN (UNBAL)

* 0dB=0.775Vrms

Gener l Specific tions

Frequency Resp nse

T tal Harm nic Dist rti n

N ise Level

(A-Weighted)

P wer Requirement

P wer C nsumpti n

Dimensi ns

Weight

Finish

Standard Access ries

20 Hz -20 kHz (+1,-2dB)

Less than 0.01% (1 kHz , rated input/ utput)

ALL

MIN.

STEREO OUT (L, R) : - 105 dB*r less

MONO OUT (1,2) : - 98 dB

r less

STEREO, MONO 1 , 2 MAX.

STEREO OUT (L , R) : - 94 dB

r less

MONO OUT (1,2) : - 95 dB* r less

AC mains

120 V versi n : 10 W, 220-240 V versi n : 12 W

482.6 (W) x 44.0 (H) x 301.8 (D) mm

19 (W) x

1.73

(H) x

11.88

(D) in.

3.8kg (8.38 Ib.)

Black

Rack-m unting screw 4 Kn b(blue, small)

Rubber f t 4 Kn b(red, small)

Operating instructi ns 1 Kn b(blue, large)

Kn b(red, large)

*0 dB=0.775 V rms

Specificati ns are subject t change with ut n tice.

TOA

C rp rati n

Printed in Japan

133-12-225-10

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