*SPECIFICATIONS SUBJECT TO CHANGE WITHOUT PREVIOUS NOTICE

A v d a . d e l a I n d u s t r i a , 5 0 . 2 8 7 6 0 T R E S C A N T O S M A D R I D - S PA I N

T l f : 3 4 1 - 8 0 4 3 2 6 5 F a x : 3 4 1 - 8 0 4 4 3 5 8

EQUIPOS EUROPEOS ELECTRONICOS, S.A.L.

TOTAL HARMONIC DISTORTION (THD+N):Less than 0,05% at rated output power at 1 KHz into 4 .

INTERMODULATION DISTORTION:SMPTE: Less than 0,08% at 60Hz,7KHz, 4:1 ratio into 4 . at rated output power.DIM-30: Less than 0,04% into 4 .

INPUT SENSITIVITY:Internally adjusted with jumper:Open jumper: 0 dBv (0.775 V).Closed jumper: +8dBv (1.95 V). At rated output power (4 ).

INPUT IMPEDANCE::Balanced: 20K. / Unbalanced: 10K.

C.M.R.R.:Greater than 70 dB, 20 Hz to 10 KHz.; 90 dB at 50 Hz.

DAMPING FACTOR:Greater than 700 at 1KHz into 8 .

HUM AND NOISE ("A" weighted):Greater than 100 dB, 20Hz to 20KHz ref. full output.

FREQUENCY RESPONSE:20 Hz to 20KHz (-0,5 dB).

OUTPUT SLEW RATE:Limited by input TIM filter to 30 V/s.Internally 60 V/s.

CHANNEL SEPARATION:Greater than 65 dB at 1KHz.

INPUT CONNECTORS PER CHANNEL:MF8 - MF12 MF16 -MF24XLR-3-31 Balanced. XLR-3-31 Balanced.Jack 1/4" Balanced. XLR-3-32 Balanced.

OUTPUT CONNECTORS PER CHANNEL:SPEAKON and binding post.

INDICATORS:CLIP LED (one per channel). / SIGNAL LED (one per channel).THERMAL LED (one per channel).ERROR LED (one per channel).ON/STBY LED (one per channel). / BRIDGE LED.

COOLING:Forced air by continuously variable speed fan.Front to back cooling.

PROTECTIONS:Electronic against short-circuit and open circuit. / Thermal against heatsink and mains transformer overheating.DC out by CROW BAR. / Magnetic circuitbreaker (only MF16 and MF24).Delayed switch on / Inrush transient / Input overvoltage.

OUTPUT POWER IN WATTS: MF8 MF12 MF16 MF24(RMS, 1 KHz, THD < 0,1%) [ 1 KHz, THD < 1% ]Stereo mode 8 240 360 480 720(both channel driven) 4 400 600 820 1190

2 500 750 1050 [1500]Bridge mode: 8 800 1200 1650 2300

4 1000 1500 2100 [3200]Dynamic power(EIA RS-490, both channel driven): 4 460 700 930 1400

2 650 1000 1300 1800POWER SUPPLY: 115/230 V. 230 V. + 10%, 30%, 50/60 Hz.

+10%, -30%. 50/60 Hz. (115 Volt special order)POWER REQUIREMENTS: 1500 V.A. 2000 V.A. 3000 V.A 4000 V.A.NET/SHIPPING WEIGHT: 16Kg/20Kg. 17Kg/21Kg. 29Kg/33Kg. 30Kg/34Kg.DIMENSIONS: 483x89x384 m/m (19"x2u.). 483x133x384 m/m (19"x3 u.).RACK MOUNT: 450 m/m with input XLR connectors.

TECHNICALSPECIFICATIONS

DISTRIBUIDO POR

PROFESSIONALPOWER

AMPLIFIERS

I N P U TC O N N E C T I O N S

F L E X I B I L I T Y The amps are fitted with an inputsystem configured as a panel that integratestwo male-female XLR connectors per channeland a mode switch. (A female XLR + Jack inthe models MF8 / MF12 on the chassisstructure).

By means of this system, the polarityand the sensitivity of the power amplifier canbe changed in order to allow its integration inany sound system. This segregation of theelements around the input signal area opensthe possibility of incorporating with ease,remote control circuits and crossovers, as wellas simplifies maintenance work.

M O N O B L O C K C H A S I SThe chassis frame is built around a single piece: the efforts of the different sub-assemblies fall on an only piece of welded laminated great

thickness steel and reinforced toward their union to the rack wings. As a result, this rugged construction can withstand all the abuse encountered bytouring sound systems.

Stereo Mode (per channel) Bridge Mode Stereo Mode

OUTPUT POWER in Watts RMS 1KHz, THD+N 0,1% [1KHz, THD+N 1%]

240

360

480

720

MF 8MF 12

MF 16MF 24

400

600

800

1200

500

750

[1050]

[1500]

800

1200

1600

2400

1000

1500

[2100]

[3000]

700

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1200

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100 V70,7 V4

2x1200

8 24 8 70,7 VMODEL

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H CLASS: The MF24, (highest power of theSeries), incorporates H class configuration outputstages for improved amplifier and power supplyefficiency, offering as a result an increase in powerand a reduction in weight.

SENSITIVITY: Through internal adjustmentson the input module board, several inputsensitivities can be selected, in order to adapt theamp to the rest of the equipment.

POLARITY: An inboard switch is included, inorder to select the input polarity. Although theA.E.S organization recommends 2+norm, atpresent time, an important percentage of soundequipment is wired with 3+polarity.

BRIDGE

MOS-FET

BALANCED: Equippedwith electronic balanced inputcircuits for noise immunity inlong wiring set-ups.

SPEAKON: Besides a 4 m/m diameter twinbinding post per channel, (normalized accordingto EN-60065), amps incorporate SPEAKONconnectors for their high connection capacity andvery extended use.

LIMITER: Limiter circuits with fixed threshold.These limiters will lengthen notably loudspeakersand power amplifier's life without appreciabledeterioration of sound quality.

BRIDGE: The BRIDGE configuration is forPUBLIC ADDRESS applications and in order toadapt the power amplifier to certain loadconditions.

PROTECTION: Incorporates multipleprotection: Switch On/Off transients, delayedinrush current, DC output current, short and opencircuit, overheating in the output stage and powersupply.

2 : MF Series poweramplifiers are prepared towork in low impedanceconditions, down to 2loads.

COOLING: Heat evacuation is guaranteed bytemperature dependent high flow fan operation(front to back servo assisted fan circuits).

MOS-FET: All MF Series amplifiers incorporateMOS-FET technology power transistors withLATERAL geometry. These devices assure highreliability and maximum sound quality.

A s g l o b a lp ro tec t ion , the ampsincorporate switch-on devicesincluding magnetic circuitbreaker (models MF16 andMF24). These switches, locatedat the front panel substituteto the old fuses with clearadvantages: they hold theirown curve indefinitely, I,t thatis unchanged with thetemperature , show theshooting by means of the leverstate and avoids locating andsubstitute the typical blownfuse.

D C o u t p u tprotection has been improvedwith the incorporation ofCROW-BAR circuits or solidstate relays. The conventionalrelays incorporate contactsa s s o c i a t e d w i t helectromechanical elementsthat with the time are subjectto failures. This is no longerpossible with the solid statedevices. Guiding directly thepower transistors output tothe loudspeakers binding posthas improved sever a lcharacteristics of the signalquality, the damping factor andthe global reliability.

E q u a l l y , t h econventional thermal switches(based on contacts andbimetals) on the powermodules has been substitutedby solid state sensors whoseinformation completes thedouble condition of speed fancontrol and shoot-down thethermal protection circuits.

The power supplytransformer is protected alsoagainst excessive heating,disconnecting both inputs untiltheir normal temperature ofoperation is reached.

All the protectionsituations are displayed in thepower amplifier front panel.

C L I P P I N G C I R C U I TL I M I T E R

Since most of the damage caused to loudspeakers,and even in the power amplifiers, is normally the result of thepermanence of the power unit during long periods of time inclipping, it is necessary to have limiter mechanisms that assuretheir reliable operation.

For this purpose, all the MF series power amplifiershas a "soft-clipping" circuit that acts on the output power bycomparing the input and output signals. Once it detects adistortion or other noticeable cut, it stabilizes the integrity ofthe output signal thereby avoiding overloading and saturationlevels than might damage the system.

M U LT I P L EP R OT E C T I O N

SPEAKON

3+2+

LIMITER

BALANCED

COOLINGFront

Back

H CLASS

OPERATION

2

SENSIVITY

Our broad experience in the design and manufacture of high power amplifiers culminatewith the introduction of the new MFSeries, our most recent generation of amplifiers

U N D E RC O N T R O L

The conception of the new loudspeakers, especially forlow frequency applications is based on that the amplifiers that

govern them behave as ideal voltage amplifiers, or with zero outputimpedance. The MF series approaches to this nearly zero value

presenting a damping factor better than 700 what redoundsin a perfect control of the position of the voice coils

along all their excursion.

+ _

POLARITY

PROTECTION