Fender 1272X Manual de usuario

1272X / 1275X

Loudspeaker

Monitor Systems

Reference / Owner’s Manual

for 1272X /1275X

P/N 053996 REV A

Fender Musical Instruments

7975 North Hayden Road, Scottsdale, Arizona 85258 U.S.A.

A Message from the Chairman

At Fender, we know the importance of sound reinforcement. From the simple

box-top powered mixer to today’s touring concert systems, the need to

communicate to make the connection between the performer and the

audience is foremost in our mind.

Perhaps no other piece of gear can make or break your message or your band’s

sound than your sound reinforcement gear. Your sound system is far more than

just a combination of dials, wires and speakers. It is an integral part of the audio

chain and should be treated with special care and attention to detail.

Fender knows what building quality musical instruments and sound

reinforcement equipment is all about. In fact, many of the world’s best

sounding electric musical instruments and sound reinforcement equipment

proudly wear the Fender name.

Whether you need a small powered mixer for your Saturday afternoon “jam” or

a professional full-size concert system, Fender has the sound reinforcement

gear to meet your needs. Likewise, your decision to purchase quality Fender

Professional Audio Equipment is one you will appreciate with each

performance for years to come.

Wishing you years of enjoyment and a heartfelt thank you,

Bill Schultz

Chairman of the Board

Fender Musical Instruments Corporation

Bill Schultz

All Wood Construction with Sturdy

Dado Joints

High Current 1/4” Phone Jacks

Metal Corners and Rubber Feet

LevelControlforAdjustingLevelsat

the Cabinet

ThreeAnglesofOrientation:30º,60º

and Vertical for Side Fill Use

Tough Indoor / Outdoor Synthetic

Carpet Covering

Thank you for your purchase of a 1272X / 1275X

loudspeaker monitor system from Fender®Pro Audio.

We are sure you will find it both a unique and effective

sound reinforcement product, providing years of

trouble-free service day in and day out.

1272X / 1275X loudspeaker monitor systems are

professional, full-range, two-way, compact

loudspeaker monitors designed for both permanent

or portable sound reinforcement requirements. With

a wide response, low distortion and controlled

directivity, 1272X / 1275X loudspeaker monitor

systems are designed to form the basis of everything

from a small public address system to the nightly

rigors of a “working band’s” sound system. After

moisture sealing, the 1272X / 1275X loudspeaker

monitor systems are covered in tough black

indoor/outdoor synthetic carpet covering. Likewise,

1272X / 1275X loudspeaker monitor systems also

feature metal corners and rubber feet for a longer life

and lasting looks.

Only the finest components are used to provide

maximum efficiency and response. In order to more

fullyunderstandtheoperationalcharacteristicsofyour

1272X/1275Xloudspeakermonitorsystemenclosure,

please read through this operational user’s guide.

CAUTION: Almost all speakers produce strong

magnetic fields which may interfere with the

normal operation of nearby electronic devices,

includingtelevisionsandcomputervideomonitors.

To reduce or eliminate interference, increase the

distance between this product and other nearby

electronic devices.

INTRODUCTION

1272X / 1275X

LOUDSPEAKER MONITOR

SYSTEMS

Parallel

series

arethetwobasicwayswhichmultiple

speakerscanbeconnectedtoasinglepoweramplifier.

When speakers are connected in parallel, their

combinedimpedance decreases. For speakers wired

in series the opposite is true, their combined

impedanceincreases. Thus,whenspeakersarewired

inseries,higherimpedancespeakersintheseriesdraw

morepower from the amplifier than do speakers in the

series with lower impedances. When speakers are

wired in parallel, the opposite is true. Higher

impedance speakers will draw less power from the

amplifier than lower impedance speakers will draw.

At Fender®, we recommend connecting multiple

speakers in parallel for several reasons. First, if one

speakerfails,theotherswillcontinuetooperate. Second,

because in a series connection one speaker affects the

output of the other speakers, unpredictable frequency

response is a concern. Third, most speaker cabinets

arealreadywiredforparallelconnectionsmakingparallel

connections the most common wiring method.

Below are two charts demonstrating how to calculate

both parallel and series impedance.

Keep in mind, power and audio signal cables are the

most common sources of sound system failure. Well

made and carefully maintained cables are essential to

thereliabilityoftheentiresoundsystem. Iflongspeaker

cablesarerequired,itisimportanttoensurethecable‘s

gauge is sufficient to transfer all of the available

amplifier power to the speakers rather than absorbing

the power itself. As a rule of thumb, larger wires are

better as they conduct more power to the speakers

(larger wire has smaller gauge numbers).

Below are two charts listing speaker wire gauges and

recommendations for best results.

*Example - If the speaker wire length

required is between 25-50 feet (7.60-

15.25 meters) and the speaker

impedance is 8Ω, the minimum

recommended speaker wire gauge is 16.

100'-UP

(30.5 m-UP)

50'-100'

(15.25-30.5 m)

*25'-50'

(7.60-15.25 m)

10'-25'

(3.05-7.60 m)

0'-10'

(0.00-3.05 m)

SPEAKER WIRE GAUGE

SPEAKER IMPEDANCE [z]

SPEAKER WIRE LENGTH

AWG Resistance in Ωper foot

(30.5 cm) @ 77º F (25º C)

.00651

.00409

.00258

.00162

.00102

8.00064

0.83

1.32

2.10

3.32

5.27

8.38

10 12 14

12 14 16

14 *16 18

16 18 18

18 18 18

4Ω*8Ω16Ω

Cross-

Section

[mm ]

Cabinet A

Impedance

Cabinet B

Impedance

16Ω*

8Ω

8Ω*16Ω

PARALLEL IMPEDANCE

*Example- Cabinet A is 8 ohms. Cabinet B is

16 ohms . The total impedance when connected

in parallel is:

+ -

*Example- Cabinet A is 4 ohms. Cabinet B is

16 ohms. The total impedance when

connected in series is 4 + 16 = 20 ohms.

2n1

ZZZ ...

Zs=

2n1

18 20* 24 32

10 12 16 24

6 8 12 20

4 6 10 18

Cabinet A

Impedance

Cabinet B

Impedance

16Ω*

8Ω

4Ω

2Ω

2Ω4Ω*8Ω16Ω

+ -

SERIES IMPEDANCE

5.3* 8

4 5.3

...

Z+

Zp=

1= 5.3 ohms.

Zp=

SPEAKER WIRING AND CONNECTIONS

The 1/4" jacks are wired in parallel

allowing any one of the jacks to be used

as an input and the other as an output.

This allows "daisy chaining" of multiple

loudspeakers, eliminating the need for

several long, cumbersome runs of

speaker cable. The connections are as follows:

Polarity Phone Jack

Positive (+) Tip

Negative (-) Sleeve

Connect the amplifier to the loudspeaker with a

minimum16gaugewirewhenalengthofnomorethan

100 feet is used. When multiple speakers are “daisy

chained” together or where longer cable runs are

encountered, use a larger gauge wire. Although no

harm or hazard will result, using too small a gauge of

wiremaycausethesoundqualityandleveltodegrade.

1272X /1275X cabinets are covered in

a tough, black indoor/outdoor synthetic

carpet for long life and lasting good

looks. To clean the carpet covering,

simply vacuum away any smudges or

dirt. For stubborn stains, use a light

soapysolutionorcarpetshampoowithabrush. Avoid

spilling liquids on the input panel, grille and speakers.

Theplacementofanyspeakercanaffect

its sound. Thus, there are several

considerations to review when placing

your 1272X /1275X monitor.

CAUTION! When operating with large amplifiers

(greater than 150 watts at 4 ohms) always set the

level control between the 3 o’clock and 5 o’clock

positions. Failuretodosomayleadtooverheating

and damage the level control.

1) When using stage monitor systems, the reduction

of feedback is probably the most important criteria.

ThebestwaytoreducefeedbackistouseaCARDIOID

pattern microphone with it’s rear aimed at the

loudspeaker. Remember: Do not cover the side or

top slots of the microphone with your hands as this

could cause feedback.

2) Select a 30 or 60 degree angle based upon the

workingdistancethatyouwillneed. A30degreeangle

is preferable for performers who require a greater

working distance from the monitor so that movement

about the stage is on axis with the monitor. A 60

degree angle is preferable for performers who have a

shorterworkingdistanceandwhodonotmovearound

the stage.

3) When larger movements are expected, 1272X

/1275X monitors may be used as side fill monitors so

thatwidehorizontalcoveragecanbeprovided. Ifused

in the side fill position, it may be advantageous to

elevate the speaker from the floor to keep it aimed at

the performer’s ear level.

The side fill position at about 10 to 15 feet from the

performer is particularly useful for drummers and

keyboard players. This allows program monitoring

while keeping the monitor clear of your equipment. In

the side fill position, the drummer’s / keyboardist’s

vocal microphone can be positioned to the side

allowing the rear of the microphone to face the front

of the monitor minimizing feedback.

1272X /1275X SPEAKER CONNECTIONS SETUP SUGGESTIONS

CARPET COVERING CARE

TYPE PR 395 PR 396

MODEL 1272X 1275X

PART NUMBER 071-1272-200 071-1275-200

CABINET 3/4" (1.9 cm) 3/4" (1.9 cm)

Particle Board Particle Board

CONNECTIONS (2) 1/4" Phone Jacks (2) 1/4" Phone Jacks

DRIVERS Low: 12" (30.5 cm) woofer 15" (38 cm) woofer

2" (5.1 cm) voice coil 2" (5.1 cm) voice coil

High: Dual Piezoelectric Dual Piezoelectric

FREQUENCY On Axis,

RESPONSE Half Space 60 Hz to 20kHz 50 Hz to 20kHz

+/- 6 dB

ON AXIS SPL @

SENSITIVITY 1W/1m: 95 dB 95 dB

COVERAGE Vertical 70º @ 5 kHz 70º @ 5 kHz

PATTERN Horizontal 35º @ 5 kHz 35º @ 5 kHz

POWER RATING 200W program 200W program

100W EIA RS 426A 100W EIA RS 426A

NOMINAL IMPEDANCE 16Ω16Ω

DIMENSIONS Height 17.3" (43.9 cm) 19.2" (48.8 cm)

Width 22.2" (56.4 cm) 25.2" (64.0 cm)

Depth 13.8" (35.1 cm) 15.8 (40.1 cm)

WEIGHT 37 lbs. (16.8 kg) 47 lbs. (21.4 kg)

SPECIFICATIONS

A PRODUCT OF:

FENDER MUSICAL INSTRUMENTS CORP.

CORONA, CA 91720 USA

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