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OWNER'S MANUAL
EXEL Exclusivas Electroacusticas S.A
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Connect this unit s power cord only to an AC o utlet of the type stated in this ow'
-ner s Manual or as marked on th e unit. Failure to do so is a fire and electrical'
shock hazard.
Do not allow water to e nter this unit or allow the unit to become wet. F ire or elec
-trical shock may result.
Do not place a contai ner with liquid or small metal objects on top of this unit .Liquid
or metal ojects ins ide this unit are a fire and electrical shock h azard.
Do not place heavy ob jects, including this unit, on top of the power cord. A d amage
power cord. A damaged power cor d is a fire and electrical shock hazard . In particular,
be careful not to pla ce heavy objects on a power cord covered by a carpet.
INSTALLATION£
Operation£
Do not scratch, ben d, twist, pull, or heat the power cord. A damaged power cor d is
a fire and electric al shock hazard.
Do not remove the unit cover. You could receive an electrica l shock. If you th' ink
internal inspec tion, maintenance, or repair is necessary, contact your dea ler.
Do not modify the uni t. Doing so is a fire and electrical shock haza rd.
If lightning begi ns to occur, turn off th e power switch of the unit as soon as possible,
and unplug the powe r cable plug from the electrical outlet.
If there is a possibi lity of lightning, do not touch the power cab le plug if it is still
connected. doin g so may be an electrical shock hazard.
In case an abnormality occurs during operation£
If the power cord is da maged(i.e., cut or a bare wire is exposed), a sk your dealer
for a replacement . Using the unit with a damaged power cord is a fire and elect
-rical shock hazard.
Should this unit be d ropped or the cabinet be damaged, turn the power switch off,
remove the power pl ug from the AC outlet, and contact your dealer. If you con
-tinue using the un it without heeding this instruction, fi re or electrical shock may
result.
If you notice any abn ormality, such as smoke, odor, or noise, or if a foreign object
or liquid gets insi de the unit, turn it off immediately. Remove the power cord
from the AC outlet.Consult y our dealer for repair. Using the unit in this co ndition
is a fire and electri cal shock hazard.
PRECAUTIONS
WARNING
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CAUTION
Installation£
- Locations expos ed to oil splashes or steam, such as near cooking stoves, hum-
- Unstable surfac es, such as a wobbly table or slope.
- Locations subje ct to excessive heat, such as inside a car with a ll the windows
- Locations subje c to excessive humidity or or dust accumula tion.
Do not place the powe r cord close to a heater. It may melt, causing fir e or electrical
Hold the power cord p lug when disconnecting it from an AC outlet. Never pull
the cord. A damaged power cord is a p otential fire and electrical shock hazard.
Do not touch the powe r plug with wet hands. Doing so is a potential electrical
This unit has venti ation holes at the front and rear to prevent th e internal tem
-perature risin g too high. Do not block them. Blocked ventil ation holes are a fire
hazard.
In particular, do no t
- place the unit on its s ide or upside down,
- place the unit in any p oorly-ventilated location such as a bookcase or clos et
- cover the unit with a t able cloth or place it on a carper or bed.
Allow enough free s pace around the unit for normal ventilation. This should be:
5cm at the sides, 10c m behind, and 10cm above.
If the airflow is not a dequate, the unit will heat up inside and may cause a fire.
To relocate the unit, r urn the power switch off, remove the power plug from the
AC outlet, and remo ve all connecting cables. Damaged cables may cause fir e
or electrical sho ck.
(other than on the de dicated rack),
shock hazard.
shock.
Closed, or places t hat receive direct sunlight.
idifiers, etc.
Operation£
Use only speaker ca bles when connecting speakers to amplifier outputs . Using
other types of cabl es is a fire hazard.
Turn off all musical i nstruments, audion equipment, and speakers when co nne
-cting to this unit . Use the correct connecting cables and con nect as specified.
Always lower the vo lume control to minimum before turning on the power to
this unit. A sudden blast of soun d may damage your hearing.
Do not use this ampli fier for any purpose other than driving loud-speaker s.
If you know you will no t use this unit for a long period of time, such as wh en
going on vacation , remove the power plug from the AC outlet. Leaving it con n
-ected is a potenti al fire hazrd.
Keep this unit away f rom the following locations:
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Introduction£
Congratulatio ns! You choose MH series, you choose the right thing. Securi ty regulations
as stated before ha ve to be obeyed when servicing the appliance.
TECNARE MHserie s-professional audio amplifier, could meet the actu al situation of amplfied
field. MH series co mbine advanced circuits, outstandin g cooling system and appliance which make
sure the operatio nal safety.
Functions and Features£
High efficiency radiator, non-lim ited transmission cooling fan which make sure the unit is
working under low t emperature.
Annular big trans former make sure enough powr supply.
Solid crust, alni co panel, standard installing hole.
Working condition under Stereo, Br idge, Parallel.
Fault on and audio ou tput automatically stop when protection circuit done.
Limiting protec tion, on/off avoi ding lashing, DC protection, output sho rt circuit protection, over
heat protection , and so on.
Inside limiter is a v ery effective pro tective circuit which avoids damaging t he speaker.
Very good audio freq uency which has a very good signal conversion, for disto rtion and the
trueness and natu ral soural sound performance..
Level gain contro ling of front panel.
Working status of operation light signal light limit light protection light display light.¡ ¡ ¡ ¡
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Front Panel£
04
POW ER
ON
OFF
Power switch
Press to toggle the power on or off.
Fau lt
Fault LED
Lights up red to indicate that protection is in effect. Specifically, lights up if the heat sink
overheats, or if a DC voltage is detected at the amplifier o ut pu ts . Als o li gh ts u p fo r ab ou t
Three seconds at time of power-on, as the amp gets ready to op er at e. To provide protection,
the unit will not output any sound from the speakers whi le t hi s in di ca to r is l it u p. W he n
Start-up is completed or the problem is corrected, the i nd ic at or g oe s off and normal oper
-ation resumes.
Cli p
Clip LED
Lights up orange when the output signal dist or ti on o n th e co rr es po nd in g ch an ne l ri se s ab ov e
1% -indicating that"clipping" has occu rr ed b ec au se t he s ig na l le ve l is t oo h ig h.
-10 dB
-30 dB
Signal LED
Normal indication: The -30dB indicator illuminates w he n th e si gn al e xc ee ds - 30 dB , an d
the -10dB indicator illuminates when the s ig na l ex ce ed s -1 0d B.
If no iddication: check gain settings and increase gain if neces sa ry. Check input conn
-ections and audio sourece for signal. If the Clip L ED i ll um in at es w it h li tt le o r no S ig na l
Indication, check the output wiring for shorts.
Abnormal indication: if -20dB, -10dB LED illuminates with no s ig na l in pu t, t he re m ay b e
system oscillations or some other malfunctio n. D is co nn ec t th e lo ad a nd f ul ly r ed uc e th e
gain. If the LED remains on , the amp may need servicing.
Pow er
Power LED
Normal indication: AC switch ON, LED will illuminate.
If no indication: Check AC outlet.
Gain Controls
Turn the gain controls clockwise to increase gain and counter clockwise to decrease gain.
The maximum voltage gain of the amplifier vari es d ep en di ng o n th e mo de l is s ho wn o f th e
designation. Maximum voltage gain for ea ch m od el i s sh ow n on t he f ro nt p an el l ab el i n
parentheses adjacent the 0dB attenuation set ti ng .
The Gain controls are marked in dB of attenuation.Ther e ar e 21 d et en ts f or r ep ea ta bl e
adjustments. The upper 14 steps ate about 1dB each, and settings should normally be
made within this range. The range below -14 dB should not be usde for normal program
levels, as the input headroom could be excee ed ed , bu t ca n be u se d fo r th es ti ng a t re du ce d
levels. At the minimum setting, the signal is compl et el y cu t off.
CH- A
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Rear panel:
Mains Socket
Please, make sure to check whether the voltage selec to r sh ow s th e co rr ec t ma in s
voltage that matches the local mains supply at the ins ta ll at io n si te . An ap pr op ri at e
mains cord is included in the package.
Input
The inputs INPUT A & INPUT B are c on ne ct to mi xing consoles. The XLR-type
connecting OUTPUT A & OUTPUT B are prepared for through-connecting input
signals to additional external power a mp s . The input signal is directly routed to these
output connectors. Accordingly, input and output connectors of the corresponding
channel are interconnected in parall el , offering permanent electrical connection,
without regard to the setting of the Power-ON switch.
Although having XLR-type output connecto rs , so me m ix in g co ns ol e mo de ls p ro vi de
unbalanced output connection only. when using mixers with unbalanced outputs,
bridging PIN1 and PIN3 of the power amp s input conn ec to rs o r le av in g PI N3 o f th e
cable s plugs unconnected is necessary. Otherwise, when feeding in unbalanced
audio signals via PIN3 (B,-, cold) and PIN2 (A , + , hot), strange hu mm in g an d HF interference may occur, which very likely wil l da ma ge t he p ow er a mp li fi er a nd / or t he
connected speaker cabinets.
NF- connection cords
Choosing high-quality balanced c ab le s( t wo c on du ct or s fo r th e au di o si gn al p lu s se pe ar ate shielding
mesh) with XLR-type connectors is recommende d fo r LF -s ig na l co nn ec ti on . Alt ho ug h co nn ec ti ng
unbalanced cables to the power amplifi er i np ut s is p os si bl e as w el l, u si ng b al an ce d ca bl es i s always
preferable. A gre at n um be r of t od ay s a ud io a pp liances employ balanced outputs. With balanced cabling,
the shield connects all metal enclosure pa rt s an d th er ef or e efficiently eliminates the introduction of
external interference-mostly noise and h um .
XLR-type connec tor pin-assignment
INPU TA
OUTP UT A
XLR (male) XLR (female)
,
05
AC~2 20V
50-6 0Hz
CH-B CH-A
OUTP UT
Bridg e
INPU TA C
~220 V/50- 60Hz
OUTPUT
OUTPUT A
BRIDGE MODE
1+
POS
1-
NEG
1+
POS
1-
NEG
OUTPUT B
1+
POS
1-
NEG
INPU T
CH-ACH-B
Paral lel
Bridg e
Stere o
1 2 3
LIFT
POS NEG
MALE XLR
1
2
3
LIFT
POS
NEG
FEMALE X LR
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Output Connectors
Power amp has two output channels. Channel A and Channel B is provided via
which SPEAKON-type output connectors.
1-
1+
2-
2+
AMP O UTP UTS
A B
1+ 1-
2+ 2-
NOT C ONNEC TED
SPE AKON CON NECTO R
SCH EMATIC D IAGRA M
Para llel
Ster eo
Brid ge
Selecting Stere o / Parallel / Bridge Mode
Stereo Mode
Each channel within the pair remains ind ep en de nt , an d ea ch m ay b e us ed f or a d ifferent
signal.
Parallel Mode
This setting connects both inputs of a pair together. One s ig na l fe ed s bo th c ha nn el s. D o
not connect different sources to each input. Each channel s gain control and speaker
connection remain independent.
Bridge Mode
This setting combines both channels of a pair in to a s in gl e ch an ne l wi th t wi ce t he o ut pu t
voltage. Use only the first channel s input and gain c on tr ol . Se t th e se co nd c ha nn el s g ai n
control at minimum.
Rear panel:
,
,
,
06
CH-B CH-A
OUTP UT
Bridg e
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Dimensions£
Unit: MM
410
88
483
20
07
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Model
MH-40 00
Load
(2x )8 Ohms
(2x )4 Ohms
(2x )2 Ohms
8 Ohm s bridg ed
4 Ohm s bridg ed
1/8 Pow er
(pink n ois e)
1/3 Pow er
(pink n ois e)
Full Po wer
(sine )
3.5 A/500 W
4.8 A/740 W
9.0 A/150 0W
4.7 A/750 W
6.4 A/105 0W
6.5 A/103 0W
9.6 A/160 0W
18A /3320 W
10A /1730 W
14. 4A/25 20W
15. 5A/27 50W
24A /4580 W
24A /4650 W
Current Draw Table(in Amperes)
This table provides typical current draw for eac h mo de l as a f un ct io n of l oa d ou tp ut p ow er l ev el .
Units of measurement are Amperes r.m.s.
NOTE! C urren t draw sh own is un der 220 V. For 2 30V mod els, mu ltipl y value s shown b y 0.96; F or 120V m odels , mu
-ltip ly valu es show n by 1.83 ; For 100 V model s, mult iply va lues va lues sh own by 2. 2 .
- 1/8 power (pi nk n oise) repre sents typical p rogram with o cc asional cli pping.Use thi s rating for
most applic at ions.
- 1/3 power (pi nk n oise)repr esents severe p rogram with h ea vy clipping .
- Full power( si ne) is contin uous sine wave dr iven at 1% clip pi ng.
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Specifications£
MH-40 00
8ohm
330 0W 450 0W
4ohm
103 0W 160 0W 220 0W
2ohm
100 V
50V /us
＜-80 dB
＜0.1 %
＜0.1 %
＜0.1 %
500 W 74 0W 150 0W
1.4 V
483 x390x 88mm
23. 7kg
26. 7kg
106 dB
AC~ 230V 50 Hz-60 Hz
Aud io limi ters, h igh tem perat ure, sh ort cir cuit
Fro nt-to -rear
>45 0
20k ¦ / bal ance d,
10k ¦ unba lan ced
20H z...2 0kHz (0 ~2dB)
Loa d Imped ance
Rat ed outp ut powe r
(TH D=1%, 1kHz)
Max imum br idged o utput p ower
(TH D=1%, 1kHz)
Max imum RM S volta ge swin g
(TH D=1%, 1kHz)
Sle w rate
(at 1 kHz)
Pow er cons umpti on
(at 1 /8 maxi mum out put pow er, lim. p ink )
Inp ut sens titiv ity
(at r ated ou tput po wer or vo ltage ,1kHz )
THD a t rated o utput p ower
IMD -SMPT E
(60 Hz,7k Hz)
DIM 30
(3. 15kHz ,15kH z)
Cro sstal k
(re f.1kH z, at 10% r ated ou tput po wer)
Fre quenc y respo nse
(re f.1kH z)
Inp ut impe dance
(20 Hz... 20kHz ,bala nced)
Dam ping fa ctor
(at 1 00Hz/ 1kHz 8¦ )
Sig nal to no ise rat io
(A wei ghted )
Pow er requ ireme nts
Pro tecti on
Cooli ng
Dim ensio ns
(W x D x H)
Net wei ght
Gross w eig ht
Model
Please no te: Eve ry inform ation is su bject t o change wi thout p rior noti ce.
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