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Important Safety Instructions / Specifications ...................... 2

Using The System/Precautions ............................................ 3

Speaker System Control Panel Features .............................. 4-5

Connection Diagrams ......................................................... 6-7

Warranty Information ......................................................... 7

INSIDE THIS INSTRUCTION MANUAL

1.  Read all of these instructions before using the ACT-1515X(F).

 2.  Follow all instructions contained in this manual.

 3.  Keep  these  instructions  in  a  safe  place  where  they  can  be  found  and  

  

referred to in the future.

 4.  Use  common  sense  when  operating  your  ACT-1515X(F)  and  heed  all  

  

warnings  included in your operating manual.

 5.  Do not use the ACT-1515X(F) near water. Do not use in or near a washtub, 

  

sink, pool, standing water, bathtub, or anyplace where the likelihood of 

  

water mixing with electricity is present.

 6.  Clean only with a clean dry cloth.

 7.   Do not locate your ACT-1515X(F) in an area which has limited or very 

  

poor ventilation. Obstructing the heat sink will likely cause the product to 

  

overheat and shut down.

 8.   Do not install the ACT-1515X(F) near  heat sources such as radiators, stoves,  

  

portable electric heaters or other devices that produce significant amounts  

  

of heat.  If you do, it could cause the product to overheat and shut down.

9)   Do not touch the amplifier heat sink with an ungloved or unprotected hand 

  

while or shortly after the ACT-1515X(F) has been operating.  The heat sink  

  

may get hot during operation.   

10)  Do not attempt to defeat the safety purpose of the AC cord’s polarized  

  

plug.  If the provided plug does not fit your outlet, hire an electrician to  

  

replace the obsolete outlet.

11)  The ground lift switch should be used only in cases where there is no  

  

other  way  to  prevent  extreme  hum  caused  by  a  ground  loop.  Lifting 

  

the ground disconnects the Earth Ground plug from the amplifier chasis.   

  

While this may eliminate the source of the current causing the ground  

  

loop, it also eliminates the safeguard of an earth grounded appliance.  An  

  

earth    grounded  appliance  minimizes  the  risk  of  electrocution  to  an  

  

individual  in contact with the appliance possessing a potentially lethal  

  

high voltage.  Such voltages can be present on the appliance in the event  

  

lightning strikes the AC mains line, or in the event there is a short or  

  

failure on the AC  mains line. IF THE EARTH GROUND IS LIFTED, AVOID  

  

COMING CLOSE TO OR TOUCHING  THE METAL PORTION OF THE AMPLIFIER  

  

PANEL DURING USE.  PANEL CONTROLS MAY BE USED AS NORMAL, BUT YOU  

  

SHOULD GROUND THE SYSTEM IN THE EVENT OF AN ELECTRICAL STORM.

11)  Protect the AC mains power cord from being damaged.

12)  SERVICING  -  The  user  should  not  attempt  to  repair  a  damaged  or  

  

inoperable ACT-1515X(F) other than by replacing a blown AC mains fuse or  

  

a damaged detachable power cord. DO NOT  TOUCH A DAMAGED POWER  

  

CORD IF IT IS PLUGGED INTO AC MAINS POWER!!!!!

13)  Turn off and unplug the ACT-1515X(F) when not in use.  Should you believe an  

  

electrical  storm  to  be  imminent,  then  it  would  be  wise  to  unplug  the  

  

ACT-1515X(F)  BEFORE  the  storm  approaches.  A  lightning  strike  on  

  

the AC line equipment is plugged into could cause electrocution to those 

  

in contact with that equipment. This is why your ACT-1515X(F) comes with  

  

a 3- prong power cord.  The third prong (Earth ground) is to prevent such harm. 

14)   To reduce the risk of fire or electric shock, do not expose the ACT-1515X(F)  

  

to rain or moisture.

15)   Servicing may be required when the ACT-1515X(F) has been damaged. If  

  

any of the following conditions listed below has occurred, please turn off  

  

and  unplug  the  ACT-1515X(F)  and  seek  the  help  of  qualified  service  

  

personnel.  The  following conditions all require service:

  

1) The power-cord or plug is damaged.

  

2) Objects have fallen into, or liquid is spilled into the amplifier. 

  

3) The ACT-1515X(F) has been exposed to significant moisture such as rain  

  

or fog and or there is present condensation inside the amplifier due to  

  

weather  conditions.  (If  there  is  condensation  on  the  outside  of  the  

  

heatsink, it is safe to assume the condensation is present inside as well.)

  

4) The unit is not operating normally.

  

6) The unit has been dropped with significant force and is not 

  

operating normally.

IMPORTANT INFORMATION

CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

HEED ALL WARNINGS IN THIS MANUAL

WARNING:  To  reduce  the  risk  or  fire  

or  electrical shock do not expose this 

equipment to rain or moisture. 

AMPLIFIER SPECIFICATIONS

• 

1000-watt Class-H Amplifier with Dual Voltage 

  Power Supply

• 

Built-in Compressor-Limiter

• 

Subsonic Filter:  32 Hz High Pass (18 db/octave)

• 

XLR Balanced Inputs

• 

XLR Full Range Outputs 

• 

Thermal & Short Circuit Protection 

• 

Signal sensing circuitry with LED indicator

LOUDSPEAKER FEATURES

Amplifier Output Power: 

 

1000 Watts @ 4 Ohms

Class: 

 

 

 

H (Dual Voltage Power Supply)

Sensitivity (for rated power): 

 

1 Vrms @ input (Volume Max)

Frequency Response (with EQ bypassed): 

10 Hz to 60 kHz + 0 -3 db 

Rated THD:  

 

 

Less than 0.02%

Damping factor into 4 Ohms: 

 

Better than 800

Signal Noise Ratio: 

 

 

100dB A-weighted

Input / Loop Output type: 

 

Balanced XLR (pin 2 hot)

Input Impedance: 

 

 

20K Ohm balanced

USA Power  USA Fuse Requirement:  

120Vac / 60Hz - 8A slow-blow fuse

European Power/Fuse requirements: 

230Vac / 50Hz - 4A slow-blow fuse.

AMPLIFIER FEATURES

• Power handling of 1000 Watts RMS, 

  2000 Watts peak

• Sensitivity: 102 dB @ 2.83V  @ 1m

• Vey well damped woofer cone and  

  surround with natively smooth response  

• Superior grade of 13-ply Baltic Birch

• Durable scratch-resistant black paint

• 16-Gauge perforated steel grille 

• Flared ports for highest available output 

  without port noise

• Dimensions (W) x (H) x (D):

  21”x 18.5” x 49”

• Weight: 130lbs

The ACT-1515X with flying points (as an option) is called the ACT-1515XF.  That model 

is available with flying hardware installed.  The hardware installed is meant to support 

the weight of one ACT-1515XF only, not multiple cabinets daisy-chained together.

FLYING HARDWARE: WARNING!!!

CABINET FEATURES

• Peak SPL: 132 dB @ 1 Meter

• 4-layer, 3 Inch Diameter Voice Coils

• Heavy-duty Polyester-Cotton spider  

  for long-term mechanical stability

WARNING! THE ACT-1515X CABINET HAS NO RIGGING POINTS. IT IS NOT SUITABLE FOR FLYING. NEVER 

ATTEMPT TO SUSPEND THIS CABINET BY ITS HANDLES.  DOING SO COULD RESULT IN INJURY OR DEATH!

WARNING! FLYING MULTIPLE ACT-1515XF CABINETS OFF THE SAME CABINET RIGGING POINTS WILL 

CAUSE THE CABINET TO FAIL, POTENTIALLY RESULTING IN INJURY OR DEATH.  THE INTERNAL FLYING 

HARDWARE IS SUITABLE FOR HANGING ONE ACT-1515XF ALONE.  DAISY-CHAINING THESE SYSTEMS 

TOGETHER WILL RESULT IN CABINET STRUCTURAL FAILURE AND POTENTIALLY INJURY OR DEATH.

Summary of Contents for ACT-1515X(F)

Page 1: ......

Page 2: ...rdprong Earthground istopreventsuchharm 14 To reduce the risk of fire or electric shock do not expose the ACT 1515X F to rain or moisture 15 Servicing may be required when the ACT 1515X F has been damaged If any of the following conditions listed below has occurred please turn off and unplug the ACT 1515X F and seek the help of qualified service personnel The following conditions all require servi...

Page 3: ... works best for you Since the best setting will depend on a number of factors there is no one correct answer for this question Those factors influencing the best choice of crossover point are Spectral distribution of the music Relative efficiency of subwoofer vs full range system Maximum power available to full range and subwoofer system Low frequency compression of subwoofer Room acoustics Positi...

Page 4: ...ol off After this time if the amp no longer turns on it should be turned off for 10 seconds and then turned on again If it still does not operate contact your authorized service provider or B 52 Pro Audio 3 LIMIT This LED indicates the signal input is high enough to drive the amplifier into compression Compression is the artful limiting of the signal volume at the input stages to prevent the other...

Page 5: ...s available and the amp is working properly the Power ON OFF switch will light up If it does not unplug the AC cable from the wall and then check the AC mains fuse in your ACT 1515X F for conti nuity with a multimeter or ohmmeter If the fuse is open no continuity replace with same kind and type If the replace ment fuse blows in short order seek service from a qualified technician 10 Power Cord Con...

Page 6: ...k the firmness of the connection of the AC Power cord in both the wall and the IEC panel mount socket Unplug the AC cord and check the fuse for continuity with a multimeter or ohm eter If fuse is blown replace it with the same type and size and then plug AC cord back into the wall outlet If fuse blows again or Power on rocker switch fails to light service is required 2 NO SOUND Is power present Is...

Page 7: ...ervice or parts to repair damage caused by accident disaster misuse abuse over powering negligence inadequate packing or shipping procedures and ser vice repair or modifications of the amplifier which has not been authorized or approved by E T I This warranty is in lieu of all other expressed warran ties If this product is defective in materials or workmanship as warranted above your sole remedy s...

Page 8: ...8 B 52 PROFESSIONAL 3383 Gage Avenue Huntington Park CA 90255 Phone 323 277 4100 Fax 323 277 4108 National 1 800 344 4ETI Internet www B 52PRO com E mail info B 52PRO com ...

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