B-52 ACTPRO12M Manual de usuario

B-52 ACTPRO Active Systems - Instruction Manual

THE BEAUTY OF POWER ACTPRO

INSTRUCTION MANUAL

ACTPRO

PROFESSIONAL ACTIVE SYSTEMS

PRO

ACTPRO12M

12” Two-Way Active Loudspeaker

ACTPRO15

15” Two-Way Active Loudspeaker

ACTPRO1515

Dual 15” Two-Way Active Loudspeaker

ACTPRO18S

18” Active Subwoofer

THE BEAUTY OF POWER

B-52 ACTPRO Active Systems - Instruction Manual

ACTPRO

CONTENTS

Introduction ................................................... 3

Safety information.......................................... 4

Features........................................................ 5

How the ACTPRO should be used .................... 6-7

Installation..................................................... 8

Rear Panel Controls........................................ 9-13

Connections .................................................. 14-18

Speciﬁcations ................................................ 19

Warranty ...................................................... 20

Contact Information........................................ 20

1) Read and keep these instructions for reference.

2) Follow all instructions.

3) Heed all warnings.

4) DO NOT turn on the ACTPRO ampliﬁer before

connecting all other external devices.

5) Do not use the speaker system near water. Be extra

cautious when moving the speaker system during

rainstorms or while transporting it over wet surfaces,

as water may splash onto the speaker system.

6) Clean only with dry cloth.

7) Do not block any ventilation openings and operate

in accordance with manufacturer’s instructions.

8) Do not install near heat sources such as radiators,

stoves or other devices that may produce heat.

9) Do not defeat the safety purpose of the polariza-

tion or grounding-type plug. A polarized plug has two

blades, one blade wider than the other. A grounding-

type plug has two blades and a third grounding

prong. The wide blade, or the third prong, is pro-

vided for your safety. If the provided plug does not ﬁt

your outlet, consult an electrician for replacement of

the obsolete outlet.

10) Protect the power cord from being walked on or

pinched, particularly at the plug, and the point where

it exits the ampliﬁer.

11) Only use attachments / accessories speciﬁed by

B-52 Professional.

12) Unplug the ampliﬁer before lightning storms and

when not in use.

13) Refer all servicing to qualiﬁed personnel. Servic-

ing may be required when the speaker system has

been damaged in any way such as: when power-cord

or plug is damaged, liquid has been spilled into the

speaker system, the speaker system has been exposed

to moisture or rain, does not operate normally, or has

been dropped.

14) Moisture can damage the ACTPRO ampliﬁer and

cause corrosion of electrical contacts.

15) Keep the speaker system out of extended or

intense direct sun light. Containers ﬁlled with

any type of liquid should not be placed on or near the

speaker system.

16) Do not remove rear ampliﬁer panel.

There are no user serviceable parts inside.

SAFETY AT A GLANCE

B-52 ACTPRO Active Systems - Instruction Manual

THE BEAUTY OF POWER ACTPRO

WELCOME TO THE B-52 FAMILY

CONGRATULATIONS ON YOUR PURCHASE OF THE ACTPRO SPEAKER SYSTEM.

Please review all the information provided in this manual, to ensure that you attain the best pos-

sible sound quality out of your system.

The ACTPRO Series full-range powered loudspeakers are capable of producing rich,

clear sound at extreme SPLs. The ampliﬁers used in ACTPRO powered loudspeakers employ

sophisticated circuitry including acoustically tuned 4th order crossovers, four stages of equal-

ization, a built-in compressor/limiter and short circuit/over-current protection. ACTPRO Series

ampliﬁers have an extra high current output stage, which sets it apart from the competition,

allowing for uninterrupted extended play. All ACTPRO ampliﬁers are Bi-Amps with fully discrete

output stages; low frequency ampliﬁers employ our proprietary class G topology for high ef-

ﬁciency and low power consumption.

Our new ACTPRO18S subwoofer is the ultimate solution for low frequency sound rein-

forcement. These innovative active subs deliver deep, rich, chest pounding bass. At the heart of

the ACTPRO subwoofer is our proprietary class G ampliﬁer.

ACTPRO speakers feature a rugged birch plywood construction and durable, black

WarneckeTM paint ﬁnish that ensures that the cabinets look as great as they sound. The ACT-

PRO ampliﬁers provide LED indicators for power, signal presence, limiter activation and protec-

tion mode. In addition to rear indicators a blue LED power indicator is provided on the front

grille of the cabinet.

HEARING DAMAGE AND PROLONGED EXPOSURE TO EXCESSIVE SPLs

B-52 speakers can produce sound levels high enough to cause permanent hearing damage to per-

formers, production crews or people in the audience. Hearing protection devices are recommended

for use where long-term exposure to high SPLs is not avoidable. Remember, if it hurts, it is deﬁnitely

too loud! Long exposures to high SPLs cause ﬁrst temporary threshold shifts, limiting your ability to

hear the actual loudness and exercise good judgment. Repeated long term exposure to high SPLs

can and WILL CAUSE PERMANENT HEARING LOSSES!

Please note the recommended exposure limits (right) in Table G-16.

More information about these limits is available on the US

Government Occupational Safety and Health (OSHA)

website at: www.osha.gov

THE BEAUTY OF POWER

B-52 ACTPRO Active Systems - Instruction Manual

ACTPRO

1. READ INSTRUCTIONS – All the safety and

operating instructions should be read before this

product is operated.

2. RETAIN INSTRUCTIONS – The safety and

operating instructions should be retained for future

reference.

3. HEED WARNINGS – All warnings on the

ampliﬁer and in the operating instructions should be

adhered to.

4. FOLLOW INSTRUCTIONS – All operating and

use instructions should be followed.

5. WATER AND MOISTURE – The speaker system

should not be used near water - for example, a

bathtub, washbowl, kitchen sink, laundry tub, wet

basement, or near a swimming pool, and the like.

6. CARTS AND STANDS – The speaker system

should be used only with a cart or stand that is recom-

mended by the manufacturer.

A speaker and cart combination

should be moved with care. Quick

stops, excessive force, and uneven

surfaces may cause the speaker

and cart combination to overturn.

7. WALL OR CEILING MOUNTING – The product

should never be mounted to a wall or ceiling.

8. HEAT – The ampliﬁer on the back of the ACTPRO

system should be situated away from heat sources such

as radiators, heat registers, stoves, or other sources

(including ampliﬁers) that produce heat.

9. POWER SOURCES – This product should be

operated only from the type of power source indicated

on the rating label. If you are not sure of the type

of power supply to your home, consult your product

dealer or local power company.

10. GROUNDING OR POLARIZATION – This

product may be equipped with a polarized alternation-

current line plug (a plug having one blade wider than

the other). This plug will ﬁt into the power outlet only

one way. This is a safety feature. If you are unable to

insert the plug fully into the outlet, try reversing the

plug. If the plug should still fail to ﬁt, contact your

electrician to replace your obsolete outlet. Do not

defeat the safety purpose of the polarized plug.

11. POWER-CORD PROTECTION – Power-supply

cords should be routed so that they are not likely to be

walked on or pinched by items placed upon or against

them, paying particular attention to the cord in cor-

respondence of plugs, convenience receptacles, and the

point where they exit from the ampliﬁer.

12. CLEANING – The speaker and ampliﬁer should

be cleaned only as recommended by the manufacturer.

Clean by wiping with a cloth slightly damp with water.

Avoid getting water inside the speaker or ampliﬁer.

14. NON-USE PERIODS – The power cord of the

ampliﬁer should be unplugged from the outlet when

left unused for a long period of time.

15. OBJECT AND LIQUID ENTRY – Care should

be taken so that objects do not fall and liquids are not

spilled into the enclosure through openings.

16. DAMAGE REQUIRING SERVICE – The

ampliﬁer should be serviced by qualiﬁed service

personnel when:

A. The power-supply cord or the plug has been

damaged; or

B. Objects have fallen, or liquid has been spilled

into the ampliﬁer; or

C. The ampliﬁer has been exposed to rain; or

D. The ampliﬁer does not appear to operate

normally or exhibits a marked change in

performance; or

E. The ampliﬁer has been dropped, or the enclosure

damaged.

17. SERVICING – The user should not attempt any

service to the speaker and/or ampliﬁer beyond that

described in the operating instructions. All other servic-

ing should be referred to qualiﬁed service personnel.

18. VENTILATION – Slots and openings in the

ampliﬁer are provided for ventilation and to ensure

reliable operation of the product and to protect it from

overheating. These openings must not be blocked

or covered. The openings should never be blocked

by placing the product on a bed, sofa, rug, or other

similar surface. This product should not be placed in a

built-in installation such as a bookcase or rack.

19. ATTACHMENTS – do not use attachments not

recommended by the product manufacturer as they

may cause hazards.

20. ACCESSORIES – Do not place this product on

an unstable cart, stand, tripod, bracket, or table. The

product may fall, causing serious injury to a child or

adult, and serious damage to the product. Use only

with a cart, stand, tripod, bracket, or table recom-

mended by the manufacturer, or sold with the product.

21. LIGHTNING – For added protection for this

product before a lightning storm, or when it is left un-

attended and unused for long periods of time, unplug

it from the wall outlet. This will prevent damage to the

product due to lightning and power-line surges.

22. REPLACEMENT PARTS – When replacement

parts are required, be sure the service technician has

used replacement parts speciﬁed by the manufacturer

or have the same characteristics as the original part.

Unauthorized substitutions may result in ﬁre, electric

shock, or other hazards.

23. SAFETY CHECK – Upon completion of any

service or repairs to this product, ask the service

technician to perform safety checks to determine that

the product is in proper operating condition.

24. FUSES – Always use the correct rating and type

of fuse as indicated on the rear panel of the ampliﬁer.

Note the proper rating fuse is determined by the AC

line voltage in the country this speaker system is being

operated. COMPLETELY DISCONNECT POWER CORD

FROM AMPLIFIER BEFORE ATTEMPTING TO REPLACE

FUSE!

25. AC SELECT SWITCH: This switch must be set to

match the AC line voltage in the country this speaker

system is being operated. To change the setting, loosen

(do not remove) the two screws above and below the

slide switch. Temporarily move the protective cover

strip and slide the actuator to match the voltage in

your country. Place the protective cover strip back over

the switch and tighten the two screws. COMPLETELY

DISCONNECT POWER CORD FROM AMPLIFIER BEFORE

ATTEMPTING TO CHANGE AC VOLTAGE SETTINGS!

IMPORTANT SAFETY PRECAUTIONS

CAUTION: To reduce the risk of electric shock, do not

remove any cover. No user-serviceable parts inside. Refer

servicing to qualiﬁed service personnel only.

The lightning ﬂash with arrowhead symbol within the equilateral triangle is intended to alert the use to the

presence of un-insulated “dangerous voltage” within the product’s enclosure that may be of sufﬁcient

magnitude to constitute a risk of electric shock.

The exclamation point within the equilateral triangle is intended to alert the user to the presence of important

operation and maintenance (servicing) instructions in the literature accompanying this appliance.

To prevent electric shock, do not use a polarized plug with an extension cord, receptacle or other outlet unless the blades

can be fully inserted to prevent blade exposure.

CAUTION

B-52 ACTPRO Active Systems - Instruction Manual

THE BEAUTY OF POWER ACTPRO

AMPIFIER FEATURES

• Bi-ampdesignwithdiscreteoutputstagefor

both the woofer and compression driver

• 4thorderelectronicX-overandmulti-stage

custom equalization

• Proprietaryefcientclass-Gamplication

on low frequency channel

• Subsoniclter:12dB/octave

• Built-incompressor/limiter

• BalancedXLRinput(LeftandRighton

ACTPRO18S Sub)

• BalancedXLRfull-rangeoutput(LeftandRight

on ACTPRO18S Sub)

• LeftandRightbalancedXLRhigh-passoutputs

on ACTPR018S Sub

• 0-1800Phase switch on ACTPRO18S Sub

• 100Hz18dB/octavelowcutswitchon

Full Range models

• 3rdorderelectroniccrossoveronACTPRO18S

• Groundliftswitch

• Fullthermal&shortcircuitprotection

• Largeheatsinkwithconvectioncooling

• Oversizedtoroidaltransformer

• LEDsforPower,Protect,LimitandSignal

• 115V/230V60Hz/50Hzselectorswitch

POWERED LOUDSPEAKER FEATURES

CABINET FEATURES

• MadeinU.S.A.usingadvancedCNCrouters

• 5/8”birchplywoodconstruction

(ACTPRO12M, ACTPRO15, ACTPRO1515)

• 3/4”birchplywoodconstruction(ACTPRO18S)

• Main&monitorsittingpositions(ACTPRO12M)

• Reinforcedinternalbracings

• EnvironmentallyfriendlyWarneckeTM scratch

resistant black paint ﬁnish

• 16gaugewraparoundsteelgrilles

• Metalhandlesandrubberfeet

• Rubberstrips(ACTPRO12M)

• Metalpolemountingcup

(ACTPRO1515 excluded)

• FrontlogoilluminatedwithblueLED

• Sophisticatedcomputermodelingwasusedto

optimize the magnetic and acoustic design of

these ferrite magnet compression drivers to

achieve outstanding performance and reliability.

• Amatchedwavefrontphasecorrectorproduces

a perfectly coherent sound wave at the horn

throat, for a detailed and dynamic mid and high

frequency performance.

• Thepolyimide-insulated,copper-cladaluminum

voice coil is edge-wound on a glass ﬁber former

resulting in a lower distortion and superior power

to weight ratio.

• Aone-piece,PETPlmdiaphragmandsurround

optimizes energy transfer for greater efﬁciency

• Theuniquepatentedclampingsystemcontributes

directly to a low distortion performance while

improving the lower mid-band response.

PETP-FILM DIAPHRAGM COMPRESSION DRIVER

COMPONENTS

• CompressionDriver:

 o Celestion1”-exitwithPETPlmdiaphragm

• Horns:

o 900x 400constant directivity horn

  (ACTPRO15&ACTPRO1515)

o Conical wave guide (ACTPRO12M)

• LFTransducers:

 o Ventedmagnetassembliesforadvanced

cooling

o High temperature copper voice coil wound on

polyamide former for increased reliability

o Celestion SP-1200 (ACTPRO12M)

 o CelestionSP-1500(ACTPRO15&

ACTPRO1515)

o Proprietary SP-1804 cast frame subwoofer

(ACTPRO18S)

THE BEAUTY OF POWER

B-52 ACTPRO Active Systems - Instruction Manual

ACTPRO

HOW THEY SHOULD BE USED

ACTPRO12M

The ACTPRO12M was designed to sit on the ﬂoor

as a stage monitor, to be pole-mounted on a 38mm

diameter speaker stand or mounted above the

ACTPRO18S subwoofer using or a pole inserted into

the pole cup of the ACTPRO18S.

IMPORTANT:

Donotexceedapolelengthlongerthan31”

(787mm) when supported atop an ACT PRO18S

subwoofer.

ACTPRO15

The ACTPRO15 was designed to sit on the ﬂoor, on stage,

on a subwoofer enclosure, or pole mounted on a 38mm

diameter loudspeaker support pole. The pole can be part

of a loudspeaker stand or a pole inserted into the pole-

mounting cup of the ACTPRO18S.

IMPORTANT

When used in conjunction with the ACTPRO18S,

the mounting pole length must not exceed

26”(660mm)inlength.

B-52 ACTPRO Active Systems - Instruction Manual

THE BEAUTY OF POWER ACTPRO

ACTPRO1515

The ACTPRO1515 was designed to sit on the ﬂoor,

onstage, or placed on top of the ACTPRO18S

subwoofer enclosure.

IMPORTANT

Do not attempt to pole-mount this loudspeaker atop

the ACTPRO18S subwoofer cabinet.

ACTPRO18S

The ACTPRO18S was designed to sit on the

ﬂoor or onstage. A pole cup built into the top

of the enclosure accepts 38mm loudspeaker

mounting poles. For best quality sound, detach

the supplied casters while the subwoofer is in

operation.

IMPORTANT

Do not pole-mount or stack more

than one full-range ACTPRO enclosure

on top of the ACTPRO18S.

THE BEAUTY OF POWER

B-52 ACTPRO Active Systems - Instruction Manual

ACTPRO

Prior to operation, ensure the ampliﬁer located on the rear of the enclosure has adequate

space behind it for proper ventilation. Ensure that all safety precautions regarding the

operation of loudspeakers and related electronic equipment are understood and adhered

to. Consult a licensed, Professional Engineer regarding physical equipment installation.

Do not modify the cabinet construction of any ACTPRO Series cabinet to suspend the

loudspeaker. Do not attempt to suspend any ACTPRO Series cabinet by the handles. Any

attempt to suspend an ACTPRO Series cabinet could result in injury or death.

COOLING

The ACTPRO loudspeakers use a power ampliﬁer that produces heat. Provide a minimum

of8”(203mm)clearancefromthebackofthecabinettoanywallfortheconvection

cooling to be efﬁcient. Keep all objects that may restrict airﬂow away from the rear of the

enclosure (i.e boxes, draperies, fabric, etc...).

Do not operate any ACTPRO models, except ACTPRO12M, when oriented in a horizontal

position. Operating an ACTPRO Series cabinet in the horizontal position can cause over-

heating and thermal limiting. The cooling ﬁns on the ampliﬁer module must be vertical, in

order to disperse the heat generated by the ampliﬁer efﬁciently.

ACTPRO12M is designed to be used as a ﬂoor monitor. When in horizontal position it

can operate long-term without overheating if not pushed to the limit. Observe proper

signal level to prevent overheating the ACTPRO12M in a ﬂoor monitor application.

During operation, or permanent installation of enclosures, do not position any ACTPRO

loudspeaker with its rear panel exposed to direct sunlight. Direct sunlight heats the

ampliﬁer module and will limit its ability to produce full output long-term.

Do not install enclosures where rain or other water sources can contact the cabinet or

ampliﬁer. Although durable, the ACTPRO Series enclosure is not weatherproof. Installation

in outdoor locations must provide protection from the elements.

INSTALLATION

B-52 ACTPRO Active Systems - Instruction Manual

THE BEAUTY OF POWER ACTPRO

ACTPRO AMPLIFIER REAR CONTROLS

MAXMIN

B 52

115V: T4AL 250V

230V: T2AL 250V

FUSE:

OFF

POWER

INPUT

OUTPUT

LEVEL

POWER

PROTECT

LIMIT

SIGNAL

115V 60Hz 1.7A

230V 50Hz 0.85A

GROUND

●

LIFT

●

EARTH

LOW CUT

●

OFF

100Hz

AC SELECT

2-WAY 500-WATT POWERED LOUDSPEAKER

BI-AMP DESIGN

●

INTEGRATED SIGNAL PROCESSING

ACT PR O 12M

1. LED POWER INDICATOR

The green LED POWER indicator, located on

the back of the ampliﬁer, will illuminate when

theACPowerswitchisinthe“ON”position.

The LED POWER indicator will dim and turn

offwhentheACPowerswitchisinthe“OFF”

position or AC mains power has been discon-

nected from the loudspeaker.

If the POWER indicator does not illuminate

when the loudspeaker is powered on, verify

the AC mains line cord is properly connected

to the loudspeaker and inserted into the AC

outlet.VerifytheACoutletatthevenueof

operation is functioning properly. In the event

of the AC mains outlet functioning properly,

but the loudspeaker fails to operate, the loud-

speaker may require servicing. Please contact

B-52’s Technical Support and Customer Service

Department.

2. PROTECT LED INDICATOR

If the power module overheats, the ampliﬁer

willgointo“protectionmode”tolimitfurther

temperature rise. The ampliﬁer will take about

30 seconds to several minutes for the tempera-

ture to drop and resume operation. When this

occurs, the exposed heat sink will feel hot to

the touch.

Overheating is usually caused by exces-

sive ambient temperature, direct sunlight for a

prolonged period of time during operation, or

playing the loudspeaker past its operational

limits.

If thermal overheating occurs, reduce signal

level to avoid constant illumination of the LIMIT

LED INDICATOR. In some circumstances, when

ambient temperature is too high, you may need

to set a fan behind the speaker to improve ven-

tilation at heatsink.

ACTPRO12M, ACTPRO15, ACTPRO1515

THE BEAUTY OF POWER

B-52 ACTPRO Active Systems - Instruction Manual

ACTPRO

ACTPRO AMPLIFIER REAR CONTROLS

MAXMIN

INPUTS

HP OUTPUTS

LEVEL

POWER

PROTECT

LIMIT

SIGNAL

OUTPUTS

GROUND

●

LIFT

●

EARTH

PHASE

●

180

●

700-WATT POWERED SUBWOOFER

INTEGRATED SIGNAL PROCESSING

B 52

115V: T6.3AL 250V

230V: T3.15AL 250V

FUSE:

OFF

POWER

115V 60Hz 2.5A

230V 50Hz 1.25A

AC SELECT

ACT PR O 18S

3. LIMIT LED INDICATOR

The red LIMIT indicator alerts the user that the

ampliﬁer output signal is clipping and therefore

is being compressed by the built-in clip-limiter.

MomentaryBrightRedFlashes

Indicates that the ampliﬁer is clipping brieﬂy

causing overdrive distortion and the internal

limiter is reducing gain.

ACTPRO ampliﬁers employ a sophisticated com-

pressor-limiter circuitry, which is nearly inaudible

at moderate overdrive conditions. It is normal to

see the occasional ﬂashing of the red LIMIT LED.

ContinuousBrightRedLight

Indicates continuous and gross overloading of

the ampliﬁer. Such overloads are audible and

may lead to overheating of the ampliﬁer and

shortening the life of the speaker components. If

the ampliﬁer is grossly overloaded and the red

LIMIT LED is on the most of the time, the operator

should reduce the signal level so that LIMIT LED

only ﬂashes occasionally.

4. SIGNAL LED INDICATOR

The green SIGNAL indicator alerts the operator

to the presence of an input signal at the loud-

speaker ampliﬁer.

If there is no indication, check the gain settings

on the ampliﬁer and increase the gain if neces-

sary. Check input connections and audio source

for signal. If no output persists, try a different sig-

nal cable from your mixer to the ACTPRO Series

loudspeaker. If the green SIGNAL LED remains

illuminated without a source connected, the amp

may need servicing.

5. LEVEL CONTROL

TurntheLEVELcontrolclockwisetoincreasegain

and counter clockwise to decrease gain. When

operating with the GAIN set at 1/3 volume or

below, it may be possible to exceed the head-

room of input circuitry on your ACTPRO loud-

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