US-SERIES THE BEAUTY OF POWER US SERIES AMPLIFIERS PROFESSIONAL POWER AMPLIFIERS US-1200 US-1800 US-3000 US-4000 OWNERS MANUAL B-52 US Series Professional Power Amplifiers - Instruction Manual
US SERIES AMPLIFIERS THE BEAUTY OF POWER CONTENTS Introduction.................................................... 3 Warnings and Safety Instructions...................... 4-5 Features......................................................... 5 Power Ratings at a Glance............................... 6 US-Series Features........................................... 7 Front Panel Controls........................................ 8-9 Rear Panel Controls.........................................
THE BEAUTY OF POWER US SERIES AMPLIFIERS WELCOME TO THE B-52 FAMILY Thank you for purchasing a US-Series Professional Power Amplifier. At B-52, we believe in overbuilding all of our products and the US-Series Professional Power Amplifiers are no exception. We took our time in designing these stellar looking amps to outperform the competition on any stage, in the clubs and on the road.
US SERIES AMPLIFIERS THE BEAUTY OF POWER IMPORTANT INFORMATION Please keep this instruction manual for future reference and for the duration of owning your US-Series Professional Power Amplifier(s). Please carefully read and comprehend the instructions inside this manual before attempting to operate the amplifier. This instruction manual includes essential safety information regarding the use and maintenance of the US-Series Amplifier.
THE BEAUTY OF POWER US SERIES AMPLIFIERS IMPORTANT SAFETY PRECAUTIONS 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.
US SERIES AMPLIFIERS THE BEAUTY OF POWER POWER RATINGS AT A GLANCE US-1200 US-1800 US-3000 US-4000 Rated Output Power Stereo Both Channel Driven 8 Ohms 210 watts 300 watts 500 watts 700 watts 4 Ohms 330 watts 475 watts 800 watts 1100 watts 2 Ohms 430 watts 700 watts 1200 watts 1600 watts Rated Output Power Bridged Mono 8 Ohms 650 watts 950 watts 1600 watts 2200 watts 4 Ohms 850 watts 1400 watts 2400 watts 3200 watts Both channels driven @ 1kHz, 1%THD 6 B-52 US Series Professional Power Amplifiers - Inst
THE BEAUTY OF POWER US SERIES AMPLIFIERS AMPLIFIER FEATURES The US-Series features four professional heavy-duty power amplifiers, covering a wide range of output power ratings. The models are US-1200, US-1800, US-3000 and US-4000. US-Series amplifiers are built on a rugged, heavy gauge steel chassis with a sturdy aluminum front panel. The amplifiers use advanced circuitry and a well-designed PCB layout to ensure quality sound and enhanced reliability.
US SERIES AMPLIFIERS THE BEAUTY OF POWER FRONT PANEL CONTROLS Opposite page 1 2 3 1. Rack Mounting pointS Points to bolt your amplifier into a rack. 2. Air Vents US-Series amplifiers are cooled by two rear-mounted fans (US-1200 has one fan) and open cell foam filters mounted behind the front vents. CAUTION: Never block the front or rear vents and keep them clean at all times. NOTE: Periodically clean the foam filters using a vacuum cleaner to avoid dust from blocking the vents.
THE BEAUTY OF POWER 6 7 4 5 8 9 11 Reduce the output volume using the specific channel’s level controls until the clipping disappears or until the CLIP LEDs flash only occasionally. 7. PROTECT Indicators These yellow LEDs indicate that the channel is in either PROTECT mode or MUTE mode. When the channel goes into protect mode its output will turn OFF. This is to protect the speakers connected to that channel. NOTE: The protect LED will light when the heatsink is overheating.
US SERIES AMPLIFIERS THE BEAUTY OF POWER 1 6 4 5 2 3 4 2 5 3 REAR PANEL CONTROLS 1. Fan(S) Cooling fans with variable speed controls. Air enters the amplifier through vents located on the front aluminium panel. Do not block the front vents or the fans on the rear panel of the amplifier. 2. Input connectors Connect the input source to these electronically balanced Combo connectors using either XLR or 1/4” TRS plugs.
THE BEAUTY OF POWER 8 9 7 10 5. LIMITER switch (US-3000 and US-4000 models only) When the sound source signal is too high, the output signal will distort. To prevent this, both channels feature clip limiters to prevent gross distortions on the outputs. It is recommended to avoid clipping but if it does occur, the clip limiters will greatly reduce the amount of distortion and stress on your speakers and amplifier.
US SERIES AMPLIFIERS THE BEAUTY OF POWER REAR PANEL CONTROLS (cont.) 1 6 4 5 3 2 4 2 5 3 binding posts offer a variety of connection options. Use speaker wires with stripped ends (do not strip them more than ½” or 12.5mm), using the holes on the bottom of the binding posts. Ensure that no part of the speaker wire is exposed when connected to the binding posts. Alternatively, you can also use speaker cables terminated with standard banana plugs.
THE BEAUTY OF POWER NOTE: Match the pin designations printed next to the output connectors on rear panel to ensure proper connections. 9. Circuit breaker The circuit breaker protects the amplifier from faults at the AC supply and serves as protection when the amplifier fails. If the circuit breaker trips, cutting AC power supply to your amplifier, it may indicate a serious malfunction or failure. Wait for the circuit breaker to cool before resetting it by simply pressing the reset knob.
US SERIES AMPLIFIERS THE BEAUTY OF POWER to the amplifier. Do not block the air vents on the front and do not block the fans on the rear panel. Make sure the open cell foam air filters behind the vents on the front of the amplifier are clean. If necessary, use a vacuum cleaner to clean these air filters. NOTE: If the air filter become too dirty, the amplifier may not operate normally as air circulating inside the amplifier may become too hot, thereby triggering the thermal protection.
THE BEAUTY OF POWER in limiter circuitry for improved performance when overloading. The limiter activates at “clipping” when the output voltage reaches the power supply voltage rails. Without limiters, the output voltage will grossly distort if the signal elevates beyond this point. The signal wave form is flattened (“clipped”), producing excessive high frequency distortion not present in the original signal.
US SERIES AMPLIFIERS THE BEAUTY OF POWER MODE SELECT: Stereo Mode In STEREO mode, both channels operate independently, with their respective input gain controls. Signal at the Channel 1 input produces output at Channel 1, while the signal at Channel 2 input produces output at Channel 2. The minimum load impedance for STEREO operation is 2 Ohms per channel. Parallel Mode When set to PARALLEL mode, a signal applied to Channel 1’s input will be amplified and appear at both of the Channel 1 and 2 outputs.
THE BEAUTY OF POWER US SERIES AMPLIFIERS CONNECTING YOUR SPEAKERS Stereo Mode or or B A _ + +_ B A 5-Way Output Binding Posts Parallel Mode _ + +_ B A 5-Way Output Binding Posts or A Bridged Mono _ + A or 5-Way Output Binding Posts Bridged / Mono A B-52 US Series Professional Power Amplifiers - Instruction Manual 17
US SERIES AMPLIFIERS THE BEAUTY OF POWER Stereo Mode or or B A Parallel Mode A B SPK+ to PIN 1+ SPK- to PIN 1- B SPK+ to PIN 2+ SPK- to PIN 2- A SPK+ to PIN 1+ SPK- to PIN 1- B SPK+ to PIN 1+ SPK- to PIN 1- _ + A SPK+ to PIN 1+ SPK- to PIN 1- B SPK+ to PIN 2+ SPK- to PIN 2- Bridged Mono _ + A or A 18 _ + A SPK+ to PIN 1+ SPK- to PIN 1- _ + _ + or _ + _ + _ + SPK+ to PIN 1+ SPK- to PIN 2+ Bridged / Mono B-52 US Series Professional Power Amplifiers - Instruction Manual _ + A SPK+
THE BEAUTY OF POWER US SERIES AMPLIFIERS WIRING There are multiple ways to connect a US-Series amplifier to other audio equipment. The US-Series features balanced inputs and link outputs, which allows you to connect both balanced and unbalanced signals. For speaker connections, you can use either binding posts or Speakon™ connectors. NOTE: Use speaker wires with the lowest gauge available. The thicker the speaker wires are, the less output signal you will lose.
US SERIES AMPLIFIERS THE BEAUTY OF POWER SPECIFICATIONS US-1200 US-1800 US-3000 US-4000 Rated Output Power Stereo Both ChannelS Driven @ 1kHz, 1%THD 8 Ohms 210 watts 300 watts 500 watts 700 watts 4 Ohms 330 watts 475 watts 800 watts 1100 watts 2 Ohms 430 watts 700 watts 1200 watts 1600 watts Rated Output Power Bridged Mono @ 1kHz, 1%THD 8 Ohms 650 watts 950 watts 1600 watts 2200 watts 4 Ohms 850 watts 1400 watts 2400 watts 3200 watts Input Sensitivity 1.
THE BEAUTY OF POWER US SERIES AMPLIFIERS LIMITED WARRANTY Thank you for choosing the US-Series Professional Amplifiers, a product by E.T.I. Sound Systems, Inc. For purposes of this warranty B-52 shall mean E.T.I. Sound Systems, Inc. B-52 manufactures some of the world’s best audio products and takes great pride in thoroughly testing each B-52 product prior to shipment.
US SERIES AMPLIFIERS THE BEAUTY OF POWER NOTES 22 B-52 US Series Professional Power Amplifiers - Instruction Manual
THE BEAUTY OF POWER US SERIES AMPLIFIERS NOTES B-52 US Series Professional Power Amplifiers - Instruction Manual 23
US SERIES AMPLIFIERS THE BEAUTY OF POWER B -52 B-52 PROFESSIONAL 3383 Gage Avenue, Huntington Park, CA 90255 Internet: www.B-52Pro.com Ph: 323-277-4100 Fax: 323-277-4108 Toll Free: 800-344-4384 B-52 Professional is dedicated to product excellence and therefore continuously attempts to improve each and every model we manufacture. This ongoing process includes refinements in design, materials and workmanship which may result in products which differ than those described in our literature.
