Mackie M1200/M1400 Скачать руководство пользователя страница 42 | Manualshive

Страница: 42 / 43

Mackie M1200/M1400 Скачать руководство пользователя страница 42

42

CH 1

B

ALANCED

LINE INPUT

(T

R

S

)

CH 1

B

ALANCED

LINE INPUT

(XLR

-F)

LIMITER

LIMITER

ON

OFF

LOW CUT

FIL

TER

LOW P

ASS

FIL

TER

(SUBWOOFER)

+

–

80 VDC

+

–

90 VDC

TO

R

OID

AL P

OWER

TRANSFORMER

LAMP

FUSE

MA

CKIE DESIGNS

M•1200/M•1400

BL

OCK DIA

GRAM

(#110896DF)

FREQ

CD EQ

FREQ

OUTPUT

APPLIC

A

TION

SWIT

CH

AMP

MODE

SWIT

CH

63 Hz

125 Hz

FREQ

TO

LIMITER

ON

OFF

LOW CUT

FIL

TER

FREQ

CD EQ

FREQ

CH 1

GAIN

S

TEREO

MONO

BRIDGE

CH 2

GAIN

INVER

TING

UNIT

Y GAIN

AMPLIFIER

ON

OFF

SUB

ON

OFF

SUB

NC

NC

NC

MUTE

CH 1

PR

O

TECT

LED

CH 1

SHOR

T

LED

MUTE

CH 2

PR

O

TECT

LED

P

OWER

AMPLIFIER

CH 1

SPEAKER

OUT

FUSE

–80VDC

FUSE

+80VDC

DC OFFSET

DETECT

SHOR

T

DETECT

METER

DRIVE

P

OWER

AMPLIFIER

CH 2

SPEAKER

OUT

FUSE

–80VDC

FUSE

+80VDC

DC OFFSET

DETECT

TO

CH 1

MUTE

OL –3 –6 –9 –20 SIG

CH 1

SIG

CH 2

SHOR

T

LED

SHOR

T

DETECT

METER

DRIVE

TO

CH 2

MUTE

OL –3 –6 –9 –20 SIG

CH 2

SIG

SIG

(T

O CH 1

METER DRIVE)

SIG

(T

O CH 2

METER DRIVE)

PD's LEASH

HO

T

LED

COLD

LED

TEMP

SENSOR

(ON HEA

TSINK)

TO

CH 1

AND CH 2

MUTE

CH 1 AMP OUT

CH 2 AMP OUT

CH 1 MUTE

CH 2 MUTE

60ºC

DETECT

OR

FA

N

SPEED

CONTR

OL

HI DCV

LO

DCV

CH 1

MUTE

CH 2

MUTE

P

OWER

SWIT

CH

TO

CH 1

AND CH 2

MUTE

THERMAL

PR

O

TECT

THR

U

(XLR

-M)

CH 2

B

ALANCED

LINE INPUT

(T

R

S

)

CH 2

B

ALANCED

LINE INPUT

(XLR

-F)

THR

U

(XLR

-M)

80ºC MUTE

55ºC UNMUTE

FA

N

TO

HUSKY

S

TADIUM

BLOCK DIAGRAM

M•1200/M•1400

«
...
40
41
42
43
»

Содержание M1200/M1400

Страница 1: ...NOT OPEN REPLACE WITH THE SAME TYPE FUSE AND RATING DISCONNECT SUPPLY CORD BEFORE CHANGING FUSE UTILISE UN FUSIBLE DE RECHANGE DE M ME TYPE DEBRANCHER AVANT DE REMPLACER LE FUSIBLE WARNING TO REDUCE...

Страница 2: ...product does not appear to operate normally or exhibits a marked change in performance or E This Mackie product has been dropped or its chassis damaged 11 Servicing The user should not attempt to serv...

Страница 3: ...n Our Fast Recovery design eliminates this high frequency sticking and allows the am plifier to remain stable when powering highly reactive loads at high volume levels You may wonder why a power amp e...

Страница 4: ...K START I got ants in my pants and I got to dance INSTALLATION The M 1200 M 1400 amps can be mounted in any standard rack system see orplacedhorizon tally on a floor or table The heavier internal comp...

Страница 5: ...cing but don t let the ants out of your pants Things You Must Remember Never plug amplifier outputs into anything except speakers unless you have an outboard box specifically designed to handle speake...

Страница 6: ...like to use a calculator and read specifications You ll find it all here APPLICATION DIAGRAMS Mackie s gang of illustrators have created easy to understand diagrams of popular studio and live sound s...

Страница 7: ...IONS AND CONSIDERATIONS 23 RACK MOUNTING 23 THERMAL CONSIDERATIONS 23 AC POWER CONSIDERATIONS 23 INPUT WIRING 24 OUTPUT WIRING 24 70V DISTRIBUTION SYSTEMS 25 APPENDIX A Service Info 26 TROUBLESHOOTING...

Страница 8: ...PEAKER OUTPUTS 63Hz 125Hz CONSTANT DIRECTIVITY HORN EQ AIR EQ CONSTANT DIRECTIVITY HORN EQ AIR EQ INPUT THRU THRU INPUT AMP MODE FREQUENCY 4 5 k Hz ON 5 6k Hz 2k Hz MONO BRIDGE LIMITER CH1 CH2 OFF FUL...

Страница 9: ...SOLE MONITOR OUT FROM MIXING CONSOLE MAIN OUT STAGE MONITOR 100Hz LIMITER ON CD OFF CD OFF M 1400 EIGHT MONITOR SPEAKERS CHANNEL 2 1 CHANNEL CH 1 CH 2 SPEAKER OUTPUTS 63Hz 125Hz CONSTANT DIRECTIVITY H...

Страница 10: ...TING DEPENDS ON COMPRESSION DRIVER CD HORN COMBINATION 3 5KHz CD ON STEREO TYPICAL CD OFF CD OFF FROM ACTIVE CROSSOVER HIGH FREQUENCY L R FROM ACTIVE CROSSOVER LOW FREQUENCY L R 3 5KHz M 1200 M 1400 S...

Страница 11: ...Constant Gain vs Constant Sensitivity There are two viewpoints or philosophies regarding the gain structure of power amplifi ers constant gain and constant sensitivity Constant gain means that regard...

Страница 12: ...ks better It s a fact of physics that as the gain of the amplifier increases the circuit noise is amplified and increases too By main taining a constant gain the noise spec for an 800W amplifier can l...

Страница 13: ...e either a shorted speaker cable or too many speaker cabinets connected to the amplifier i e the load impedance is too low If a short is indicated please check your cables If the cabling is OK then re...

Страница 14: ...el be sure the load isn t adding up to less than 2 ohms Anything below 2 ohms can cause the SHORT LED to light and trig ger the PROTECT mode Remember As the load gets heavier its value in ohms goes do...

Страница 15: ...minated Unscrew the amp s binding posts enough to reveal the holes on their sides then insert your stripped wires stripped about 3 8 back into the holes and retighten the posts finger tight is fine pl...

Страница 16: ...on of the woofer But some woofers are built with reverse polarity meaning that the above conditions result in an inward excursion If you re not sure which type of speakers you have take a look at thei...

Страница 17: ...ONITOR OFF TYPICAL ON OFF TYPICAL TYPICAL 35 Hz TYPICAL 35 Hz STEREO TYPICAL STEREO TYPICAL AIR EQ AIR EQ 2 2 3 1 1 SHIELD COLD HOT SHIELD COLD HOT 3 SHIELD COLD HOT 3 2 1 SLEEVE SHIELD TIP SLEEVE TIP...

Страница 18: ...er second like 40Hz 300Hz The 40Hz refers to the low frequency point usu ally but not always where the speaker s output drops by 3 dB and will roll off com pletely as the frequency goes down There is...

Страница 19: ...ATION BALANCED OR UNBALANCED BALANCED OR UNBALANCED AIR EQ ON BRIDGE MONO 170 Hz OFF 4 5k Hz 5 6k Hz 2k Hz AIR EQ 170 Hz 100 Hz OFF STAGE MONITOR 100 Hz STAGE MONITOR OFF TYPICAL ON OFF TYPICAL TYPICA...

Страница 20: ...lso popular for subwoofer applications but please see SUBWOOFER foraspecialsubwoofersurprise To use all the M 1200 M 1400 s power to drive one speaker cabinet using BRIDGE mode you ll have to do four...

Страница 21: ...E it will sum the inputs when the OUTPUT APPLICATION switch is set to SUBWOOFER Here s how to configure it 1 Turn the M 1200 M 1400 s POWER off 2 Set the OUTPUT APPLICATION switch to SUBWOOFER 3 Selec...

Страница 22: ...INPUT of the amplifier and monitor the SPEAKER OUTPUT with the voltmeter or o scope 2 Adjust the signal generator level so you measure 1V rms output at 1kHz You should turn down the GAIN knobs on the...

Страница 23: ...r festival THERMAL CONSIDERATIONS The M 1200 M 1400 amps are fan cooled and bring air in through the front and out through the sides Make sure that cool air is available at the front of the amplifier...

Страница 24: ...d power the audio equipment from the other leg This will help minimize noise from the lights coupling into the audio particularly if SCRs are used When setting up for a show oftentimes you are pluggin...

Страница 25: ...becomes 6 4W and a 10W tap becomes 12 8W M 1400 K 850W 625W 1 32 Thus a 2 5W tap becomes 3 3W a 5W tap becomes 6 6W and a 10 W tap becomes 13 2W CAUTION Acharacteristicoftappedtransform ersis that th...

Страница 26: ...ble connections You may have your positive and negative connections reversed at one end of one speaker cable WARRANTY SERVICE Details concerning Warranty Service are spelled out on the Warranty Card i...

Страница 27: ...in the amplifier Refer to Grounding in Appendix D REPAIR Service for the U S versions of our amplifi ers is available only from one of our authorized domestic service stations or at the factory lo ca...

Страница 28: ...ny of the audio and electronic terms used in discussions of sound mixing and recording Many of the terms have other meanings or nu ances or very rigorous technical definitions which we have sidesteppe...

Страница 29: ...l path as a result of an external magnetic field In audio systems this is usually manifested as a 60Hz or 120Hz hum or buzz The source of this noise can be from a ground loop or from the signal wire c...

Страница 30: ...es to keep equipment chassis and controls at zero voltage and to provide a safe path for errant currents This is called a safety ground Maintaining a good safety ground is always essential to prevent...

Страница 31: ...ers or monitor headphones or in the ear monitors are those speakers used by the per formers to hear themselves Monitor speakers are also called foldback speakers In recording the monitor speakers are...

Страница 32: ...taken to simply mean two channels sweep EQ An equalizer that allows you to sweep or continuously vary the affected frequency of one or more sections TRS Acronym for Tip Ring Sleeve a scheme for connec...

Страница 33: ...balanced end When connecting an unbalanced output to a balanced input be sure that the signal high hot connections are wired to each XLR CONNECTORS Mackie amplifiers use 3 pin female XLR connectors o...

Страница 34: ...installations you can use bare wire Figure D or wire ter minated with spade lugs Figure E SPEAKONS Speakon connectors have become popular with many loudspeaker manufacturers be cause they provide a qu...

Страница 35: ...fer increased immunity to external noise specifically hum and buzz Because a balanced system is able to minimize noise it is the preferred interconnect method especially in cases where very long lengt...

Страница 36: ...he shelf connecting cables that are available at any music store Here are some guidelines 1 Use balanced lines if at all possible They provide better immunity to induced noise and ground loops Remembe...

Страница 37: ...nominal level indi cation next to the control Again this should be at least 10 dB below the maximum output level of the mixer You can double check the actual output signal level if there is an output...

Страница 38: ...the speaker s Often the passive crossover is built into the cabinet along with the various drivers The crossover divides the high level speaker signal into frequency bands which are then directed to...

Страница 39: ...OHMS LOADS AND SUCH Remember As the load gets heavier its value in ohms goes down For instance a 2 ohm speaker load is twice as heavy as a 4 ohm load An ohm is a unit of resistance the more ohms the m...

Страница 40: ...power re quires a steady and stable AC supply This means the line impedance must be very low to insure that the peak AC line voltage does not sag to less than 97 of its value If driving highly reacti...

Страница 41: ...with musical program fully loaded 2 ohms per side or 4 ohms bridged 550 watts with musical program fully loaded 4 ohms per side or 8 ohms bridged 850 watts at full power into 8 ohms continuous sine w...

Страница 42: ...R AMPLIFIER CH 1 SPEAKER OUT FUSE 80VDC FUSE 80VDC DC OFFSET DETECT SHORT DETECT METER DRIVE POWER AMPLIFIER CH 2 SPEAKER OUT FUSE 80VDC FUSE 80VDC DC OFFSET DETECT TO CH 1 MUTE OL 3 6 9 20 SIG CH 1 S...

Страница 43: ...torious Technical Writing staff then converted to this amazing piece of work using a 13 story 1000 gigawhat Macintosh powered by its own dedicated AC supply with extensive voltage regulation and noise...

Отзывы:

Нет отзывов