Martin M127i Manual de Usario

Martin Vocero M127i

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Installation Series

u s e r m a n u a l

r evi si o n d

M 7 2 i

M 8 2 i

M125i

M127i

M129i

M154i

M156i

M 1 5 0 2 m k 2

2 Mach Installation Series

D E S I G N C O N C E P T

The Mach Installation Series is designed

especially for fixed installations in discos,

theatres, bars etc. The Installation Series con-

sists of two different speaker types.

Medium throw top-boxes

The M127i, M129i, M154i & M156i are

designed for placement up to 20 meters (65

feet) from the listener. Horn dispersion of 90°

by 40° ensures good coverage in the horizon-

tal plane while reducing distorting reflections

from floor and ceiling in the vertical plane.

Near field top-boxes

The M72i, M82i & M125i are designed for

placement up to 10 meters (32 feet) from the

listener. Their wide 120° by 120° dispersion

allows them to be flown on either axis and

makes them ideal near field monitors in ven-

ues with low ceiling height.

Top-box frequency range

All top-boxes are tuned to work from the

upper sub-bass and up. For ideal performance

they must be supported by a subwoofer.

The idea behind this design is that in fixed

installations, the speakers are typically flown.

Flying provides less support for the audio

energy below 100 Hz, reducing the sub-bass

output. Instead of forcing the speaker to per-

form where the acoustic environment is work-

ing against it, our top-boxes are designed with

a roll off in the sub-bass. The advantage com-

pared to full-range boxes is smaller size,

higher sensitivity and power handling.

CO N N E C T I O N S

The top-boxes in the Installation Series come

standard with a passive crossover. In passive

mode they are connected with the 1+, 1- pins

on the Speakon® terminal.

For correct phase, verify that + (red) on the

amplifier is connected to 1+ on the Speakon®

terminal. Likewise, - (black) on the amplifier

must be connected to 1-.

When driven active, the woofers are con-

nected to the 1+, 1- pins and the horns are

connected to the 2+, 2- pins. Upgrading to

active mode is done by removing the Spea-

kon® terminal and re-connecting the wires.

Please refer to page 5.

C A B I N E T F E A T U R E S

Removing the grill

The cabinets in the Installation Series are

built around a solid aluminum frame. Apart

from making the cabinet very strong, the

frame is the mounting point for the grill. The

grill is made of heavy 2 mm steel with 8 mm

holes for maximum air-to-metal-ratio. The

grill is removed by inserting a cable tie or like

through the holes in the grill and pulling it

outwards. This gives access to the drive units.

Figure 1: Removing the grill

user manual 3

Rotatable horn

The M129i features a rotatable horn that

allows the speaker to be flown vertically or

horizontally. The default horn angle is for

horizontal applications. For vertical applica-

tions, rotate the horn 90° to maintain the 100°

x 70° coverage pattern.

Flying system

The M72i, M82i, and M125i are flown with

customized brackets. All other boxes - and the

M125i - are flown using M10 flying bolts

mounted into the flying points on the top and

bottom plate of the cabinets. To fly the box,

simply remove the bolts and mount the flying

bolts. The certified load for each flying bolt is

4000 kilograms (8800 pounds).

The flying points are placed so that the

speaker will fly without tilt. If tilt is needed,

wires can be connected to the rear or bottom

flying points.

The M125i 127i, & 154i have been prepared

for a top hat adapter that allows the speaker to

be placed on a tripod. The top hat adapter

must be ordered separately. Multi- and U-

brackets are available for all models except

the M154i, M129i & M156i.

H O R N P R O T E C T I O N

The horns features a thermal protection cir-

cuit that increases impedance when the cur-

rent exceeds a safe level. The increased

impedance reduces current to the horn, thus

protecting it from damage. The audible result

is lower output from the horn. When this hap-

pens, do not increase the high frequency level

on the EQ or tone control, as this may cause

damage to the protection circuit and eventu-

ally damage the diaphragm.

When the current returns to a safe level, the

protection circuit restores full signal current

to the horn, and the audio output returns to

normal.

The thermal protection is very effective as it

combines good protection with excellent

sound quality. The components in the protec-

tion circuit are all linear and thus have no

influence on the sound when not engaged.

CA B L E S

High quality cable must always be used.

Cables with high capacitance, high induc-

tance and high impedance have a strong nega-

tive influence on sound quality as well as

amplifier reliability.

We recommend the 2 x 4 mm (11 AWG) or 4

x 4 mm (11 AWG) Mach speaker cable. This

M129i, horizontal flying

M129i, vertical flying

Especificaciones del producto

Marca:	Martin
Categoría:	Vocero
Modelo:	M127i
Color del producto:	Wit
Ancho:	416.5 mm
Profundidad:	243 mm
Altura:	472 mm
Amable:	Afzuigkap motor
Diámetro de la conexión de escape:	150 mm
Ubicación del escape:	Boven
Consumo de energía (máx.):	275 W
Cantidad por paquete:	1 stuk(s)
Compatibilidad:	Vista, Esprit, Atrium, Evasion, Lotus, Orélia Design, Actis, Altima, Pilot Master Pro, Premiun
Flujo de aire (alta velocidad):	830 m³/uur