Toa A-2060 CU User manual

%H
PA AMPLiFIERS
OPERATING:NSTRUCT10NS
A口2060 CU
A‐2120 CU
AE2240 CU
Ttts ngure reprensents the A‐2120
Please fo‖ow the instructions in this Fnanual to obtain the optimurn results from this unit.
We also reconlrnend that you keep this rnanual handy forfuture reference.
TOA Corporation

TABLE OF CONTENTS
1. lMPORTANT SAFETY iNSTRUCT10NS口 ……
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2,SAFETY PRECAUT10NS.… ……
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3.GENERAL DESCRIPTiON口 …………
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4. FEATURES,… …………
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5.NOMENCLANTURE AND FUNCT10NS
5.l FrontⅢ ……………
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5.2 Rear.… …………
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6.CONNECT10NS
6.1, lnput Connections,…
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6.2口Output Connections a…
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6.3.Example of External Equipment Connections,… …….…
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MUTING FUNCT10N口 ….口
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1NSTALLAT10N.… ……… ……
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VOLUME CONTROL SETTINGS.… ……… …
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BLOCK LEVEL DiAGRAM口 …………………… ………………
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DIMENS10NAL DIAGRAM.… … ……
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SPECiFiCATiONS.… ………
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2

イコlMPORTANT SAFETY
INSTRUCT10NS
●
Read these instructions.
●
Keep these instructions,
●
Heed a‖warnings.
●
Fo‖ow a‖instructions.
●
Do not use this apparatus near water.
・
Ctean onty with dry cloth.
●
Do not block any ventilation openings, insta‖ in
accordance with the rnanufacture's instructions
●
Do not insta‖ near any heat sources such as
radiators, heat registers, stoves, or other apparatus
(inCluding ampli付
ers)that produce heatt
e Do not defeat the safety purpose of the polarized or
grounding―
type plugo A pOlarized plug has two blades
with one wider than the other.A grounding type plu9
has two blades and a third grounding prong The wide
blade or the third prongs are provided for your safety.
lf the provided plug does not fit into your outiet,
consult an electrician for replacement of the obsolete
outlet.
Protect the power cord from being walked on or
pinched particularly at plugs, convenience
receptacles, and the point where they exit frorn the
apparatus.
Only use attachments/accessories specified by the
manufacturer.
Use only with the cart, stand,
tripod, bracket, or table
specified by the manufacturer,
or sold with the apparatus.
llVhen a earth is used, use
caution when moving the
cattapparatus combination to
avoid iniury frOm tip―
overt
Unplug this apparatus during lightning storrns or when
unused foriong periods oftirne
Refer ali servicing to qualified service personnel.
Servicing is required when the apparatus has been
damaged in any way, such as power― supply cord or
plug is darnaged,Liquid has been spilled or obieCtS
have fa‖
en into the apparatus, the apparatus has
been exposed to rain or rnoisture, does not operate
norrna‖
y,or has been dropped
2日SAFETY PRECAUT10NS
●
Before insta‖ation or use,be sure to carefu‖
y read a‖
the
instructions in this section for correct and safe operation.
・
Be sure to fo1low a‖
the precautionary instructions in this
section,which contain important warnings and/or cautions
regarding safety
●
ARer reading,keep this rnanual handy for future reference.
Safety Symboland Message Conventions
Safety symbols and messages described below are used in
this manuai to prevent bodily iniury and propetty darnage
which could result from nlishandling。
Before operating your product, read this manual first and
understand the safety symbois and rnessages so you are
thoroughly aware ofthe potential safety hazards.
The exclarnation point within an equ‖ateral
triangle is intended to alert the user to the
presence ofimportant operation and rnaintenance
(SerViCing) instruction in the literature
accompanying the appliance
△WARNING
lndicates a potentia‖
y hazardous situation which,
if 汗
lishandled, could result in death or serious
personalinjury.
When instaHing the Unit
e WARNING: Do not expose the unit to rain or an
environment where it rnay be splashed by water or other
liquids,as doing so rnay resultin lre or electric shock
●
Use the unit only with the voltage specified on the unit.
Using a voltage higher than that which is specified may
resultin ttre or electric shock.
●Do not cut,桁nk,othewise damage nor modify the power
supply cord. in addition, avoid using the power cord in
close proxirnity to heaters,and never place heavy obiects
―h including the unit itseif―
―
on the power cord,as doing so
rnay resuitin ttre or electric shock.
●
Avold insta‖ing or rnounting the unit in unstable locations,
such as on a rickety table or a sianted surface, Doing sO
rnay resuit in the unit fa‖ing down and causing personal
injury and/or propeRy damage.
●
The ttmtts rnarにd瑚愉愉e ttmbd'att httdoぃ
live. The external wiring to these terrninals requires
insta‖ation by an instructed person.
●
The apparatus sha‖be connected to a rnains socket outlet
with a protective earthling connection.
・The socket―outiet sha‖
be insta‖
ed near the equipment
and the plug sha‖be easily accessible.
3

3日
GENERAL DESCRlPT10N
TOA's Basic Ampli付 ers A‑2060, A‑2120 and A‑2240 are high cost― perforrnance mixer
power ampli付 ers suited for broadcasting paging or background rnusic in schOois,o簡 ces,
shops,factories,rnosques,chじ 「
ches and iarge rooms.
4口
FEATURES
・
High durability,high reliability,and high cost performance白
・
Two rnicrophone inputs,one TEL input,two AUX inputs,and one recording output,
・
Speaker output of constant voltage distribution systern (25V or 70V)and iOW
impedance(4Ω ),
o Muting function.
・
independentinput volume controls and rnaster volurne control.
・
independenttone controls of b00st and cuttype for both high and low frequencies.
・
MiC l with phantorn powerfor condenser microphonesロ
・
Current iirniter circuitry protects transistors, and the therrnal protection circuitry
prevents a failure due to overheat.
・
All MIC inputs are electronica‖
y―
balanced input.
5

5.NOMENCLATURES AND FUNCT10NS
5.1.Front
Power Switch
Press to turn ON the power,
Press again to turn the power STANDBY.
Unplug AC Power Cord to get complete OFF the
power.
Powerindicator
Lights green when poweris switched ON.
Signal indicator
Lights green when power is switched ON, and
indicates an output signal.
Peak indicator
Lights red to indicate the output signal reaches
the peak level, this indicates that sound is
distorted.in such a case,adjust each volume
controlto reduce output level.
Microphone Volurne Control
AttustS the microphone level.
TEL Volume Control
Adjusts the TEL level.
AUX Volume Control
Adjusts the AUX level.
Bass Control
Adjusts bass response,Rotate clockwise to
increase bass output, and counterclockwise to
reduce it. The center position provides nat
characteristics.
Treble Control
AdiustS treble response.Rotate clockwise to
increase treble output, and counterciockwise to
reduce it. The center position provides ttat
characteristics,
5日
6.
7.
8.
2.
3B
4.
9.
6
808◎ 8 A
③ilBm。
旨=五維信
↑ほ
提[智

10,Master Volume Control
Adjusts the overa‖
signallevel.
11.AC Power Cord
Connects to an AC pOwer source.
12.Output Terminals
Connect to speakers. VVhen connecting
speakers use only one of the speaker output
terrYlinals〕
low or high impedance.
13.Terrninal Cover
To avoid electric shock by high voltage from
output terrlninal,put back the terrninal cover ater
connecting speaker cords.
14.MiC l and MiC 2 1nputs
・{MiC l:SCrew Terminals〕
o60 dB(lmり ,600Ω ,electronically balanced.
Not only a dynarnic nlicrophone but also
phantom powered rnicrophone can connect
with only this MiC l input.
・When it connects Dynarnic Microphone,
please set phantom switch in OFF by a‖
means,
●
〔
Mic 2:Screw Terminals)
‐
60 dB(lmVl,600Ω ,electronically balanced.
6B CONNECT10NS
6口1口input Connections
●Mic l Connection(ScreW Terminals).
MiC 2 MiC l
￨￨￨￨￨￨￨￨￨
45,TEL input
。(SCrew Terminals)
‑10 dB(300mV),10 kΩ ,transformerisolated.
16.AUX l and AUX 2 input Terrninals
‑20dB (100mⅥ , 10kΩ , unbalanced.Monaural
RCA pin jacks.Accept external equipment output
signal.
17.Recording output(REC OUT)
OdB(1｀
り
,600Ω
,unbalanced.Outputs a‖
input
signals before the rrlaster volume control.Connect
to a cassette deck, etc when recording the
broadcast contents,
18.Muting Sensitivity Control
The background music levei 30 dB to be
automatica‖
y reduced 30dB when priority function
is operated.Adjusts the input threshold level of
Micl and h/1ic2: 0〜 ‑64dB, TEL: 0〜 ‐
23dB to
controlthe rnute function.
19.Phantorn Switch
Selecting to ON position supplies power for
condenser microphones from h/1ic l.
This phantom poweris 21V DC.
Cautioni
Be sure to select OFF position when using the
rnicrophone that can not be operated on phantom
power.The sound wili be distorted.
20B Ground Terminal
Connectto ground(earth)tO aVOid electric shock.
Phantorn Switch Position
in the case of Dynanlic IMicrophone
PHANTOM
OFF [￨コ
コ ON
・
in the case of Phantorn Power Microphone
PHANTOM
OFF 口 IEコ ON
7
Two Core Shielded Cable

・
Mic 2&TEL ConnecHons(ScreW Te「 minals)
TEL MiC 2 MiC l
lll「 ￨￨￨￨￨
E C H E C H E C H
Two Core Shielded Cable
・
AUX input Connecttons(RCA pinjack)
6口2口
Output Connections
●Low irnpedance Speaker
COM 4Ω 00M 25V 70V
Totalimpedances of 70V linei
・
83Ω (A‐2060)
・
42Ω (A‑2120)
・
21Ω (A‐2240)
Tetephone PAX
●25V Line Speaker
00M4Ω COM 26V 70V
Signal source(Tuner,cassette Tape, etC)
●70V Line Speaker
COM 4Ω COM 25V 70V
CAUT10Nl
e Tripartite the 4Ω
,25V and 70V terrninais cannot be used atthe same tirne.
・lmpedances indicated at the terminal「 epresent the total speaker system(10ad)impedances.
Totalirnpedances of 25V line:
・
10Ω (A‐2060)
・5Ω (A‑2120)
・
2.6Ω (A‑2240)
△ CAUT10N
Be sure to attach the supplied terrninal cover after connection completion.
Because high voitage is applied to the speaker terrninals,never touch these terrninals to
avoid electric shock.
8
One Core Shielded

6.3コ
Example of External Equipment Connections
Electret Condenser
Microphone
Dynamic Microphone
70V Line
Horn Speaker with
Matching T「ansformer Dynamic MicrophOne
Radio Tuner
or CD Player
Cassette Tape
Player
Cassette Tape
Recorder
7白MUTING FUNCT10N
hllic l, Mic 2 and TEL inputs have a priority ttnction and each mutes otherinputs by the same priority
level.VVhen Mic l or hllic 2 or・TEL inputis used, it takes precedence and automaticaHy reduces.The
attenuation levelis‑30dB桐xed atthe factory.
The sensittvity inputlevel for operate the function of muting adjustable O to‑64dB for Micl and Mic2 or 0
to‐23dB for TEL,which is adjustable with the MUTE SENSiTiViTY on the rear panel.if setto O k mean
the rnuting function OFF.
MUTE
SENSITiVITY
MAX POSiT10N
MiCl,MiC2 1‑64dB
TEL:‑23dB
Remark:About Mute function口
llVhen signalis in Micl,Mic2 or TEと
,the mute circuR works irnmediately.
When a‖ the Micl,Mic2,or TEL it disappears,it return to an old state about 3 seconds
iater.
9
6【 お【坊 ③
具11:￨せ せ
101
。芯 p添 財ふ 圏 目目目題目目題目l⑥
・
rOnl・
・
。
Fi確 紹 摯
□□□ ￨ ￨□ □o
￨￨￨￨￨￨￨‖15
￨￨‖
￨￨￨‖10
轟 邑 晶 T●
回・

8,lNSTALLAT10N
Keep the unit's ali sides over 10 cm(3.94 inches)away frOm obiectthat may obstruct airttow to prevent
the unit's internaltemperature rise.
over 10cm
over 10cm over 10cm
9B VOLUME CONTROL SETTINCS
Outputleveis are adjustable with individual volume controis.For music play or announcement,adjust the
corresponding volume control so that the red peak indicatorlights interrnittently.
Note thatthe sound quality is dOwngraded when the peak indicator remains iit.
10日BLOCK&LEVEL DlAGRAM
陥
却的﹂マあハ「
￨
網
Ｃ
ＯＭ
AC Main
60Hz
O dBV
‐
20
‐
40
‑60
Stand‐by Power Sw胡tch
10

11コDIMENS10NAL DlAGRAM
●
A‐2060 CU
unksi mm(inChes)
●A‐2120 CU
● A‐
2240 CU
い Ｏ Ｏ Ｏ︼ ∞側 Ｎ
︻ゆゆＯ︼０︐
Ｎやミ
0 電 驚
彊軽瑠 齢8
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58。4[2.30]
0 輔 摯
中
運郵喜
票堅
1808・
8
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々日
４Ｅ

Model No口 A‐
2060 CU A‐2120 CU A‑2240 CU
POwer Source 120 V AC,60Hz
Rated Output 60W 120W 240W
Power Consumption
(lEC60065) 72W 124W 238W
Frequency Response 50‑20,000 Hz,± 3 dB
Distortion Less Than 10/。
at l東
Hz‐1/3 Rated Power
lnputs
MiC l
MiC 2
TEL
AUX l
AUX 2
‐
60 dBV(1.Omv),600Ω ,Balanced,screw Terminal
‑60 dBV(1.Omり ,600Ω ,Balanced,Screw Termh創
‑10 dBV(300mり ,10 kΩ
,Transformerisolated Balanced,Screw Terminal
‑20 dBV(100m、 9‐
10 kΩ,Unbalanced,RCA Pin」 ack
‑20 dBV(100 mⅥ ,10 kΩ・
Unbalanced,RCA Pin」 ack
Outputs
Speaker Out Ali Speaker Outputs are Floating Balanced
70V 83Q 42Ω 21Ω
25V 10Ω 5Ω 2.6Ω
4Ω 15.5V 22V 3イV
Rec Out O dBV(1.OV),600Ω ,Unbalanced,RCA Pin」 ack
Phantom Power DC+21V(MiCl)
S/N Ra8o Over60 dB
Tone Controis Bassi±10 dB at100Hz
Treble:±
10 dB at10kHz
Muting
MiCl,MiC2 and TEL overttdes otherinput signals wRh‑30 dB attenuaHon
SensRivky input Level adjustabie for Micl,Mic2:O to‐
64dB,TELi O to‑23dB
(MiCl,MiC2,TEL,same p高 o高ty leveり
Ventilation Cooling Fan
lndicators Power LED,Signal LED,Peak LED
Finish Panel:ABS Resin,Black
Casei Steel Plate,Black
Dimensions 420(W)x101(H)X280(D)mm
165(W)x4,0(H)X ll,0(D)incheS
420(W)x101(H)X360(D)m rn
16.5(W)x40(H)x142(D)incheS
Weight 70k9
15.431b
10.8k9
23.81 ib
13 2 kg
29.10 ib
12.SPECiFiCAT10NS
★
)O dBV=110V
対
)speCincattOns are measured on 120V AC for ali modeis.
Note:The design and specrications are suttecttO Change wkhout notice forimprovement.
12 Part Noi 533‑01‑055‑80