Atlantic Technology 4.5 PBM Instruction Manual Download Page 2

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Model 4.5 PBM

M

ODEL

 4.5 PBM

High Performance Powered Subwoofer

Congratulations on your purchase of an Atlantic Technology 4.5 PBM powered subwoofer. With proper
care, your new subwoofer will provide many years of trouble-free, high quality bass reproduction.

The 4.5 PBM is capable of delivering very high output levels and a
wide dynamic range with smooth in-room response down to
approximately 30 Hz, with a peak SPL of 105dB.

The built-in proprietary high-current Class G amplifier is
conservatively rated at 150 watts RMS. This amplifier, coupled
with the massive 10" long-throw woofer in a sealed, acoustic
suspension enclosure, generates musical, accurate deep bass with
a minimum of distortion.

Your Atlantic Technology powered subwoofer will smoothly
integrate with virtually all other brands of loudspeakers on the
market. All of its internal electronics have been designed to
maintain optimal signal integrity. From the premium quality
gold-plated connectors to the clearly marked controls, this is one
of the most versatile high performance subwoofers you can buy.
An added benefit is its unusually compact size and elegant design.

Features

Your Atlantic Technology 4.5 PBM powered subwoofer was engineered using the latest technology and
finest components available. It features:

A long-throw 10" driver with a vented motor structure and 2" high temperature voice coil.

This powerful driver has a very stiff non-resonant cone that acts as a perfect piston throughout
its operating range. Its massive motor assembly and high temperature components mean high
performance and exceptional reliability.

A sealed acoustic suspension enclosure for low distortion and deep bass output.

Acoustic suspension designs are inherently low in distortion and naturally deliver deep, smooth
bass response. As with all Atlantic Technology subwoofers, we have paid inordinate attention to
giving you accurate musical bass reproduction along with terrific special effects.

A linear power high current discrete Class G amplifier conservatively rated at 150 watts RMS.

Atlantic Technology’s advanced Class G amplifiers utilize dual low voltage/high voltage power
supplies for exceptional power delivery from a compact, efficient package. One power supply
operates during all “normal” demand periods. But when a high demand peak signal appears at
the subwoofer input, the second, high voltage supply immediately switches in to dramatically
boost the amplifier’s low distortion output capability. The amplifier delivers very high power
levels from a compact and efficient package. It consumes less steady-state power and produces
much less heat than standard amplifier designs for longer more reliable operation. The 4.5 PBM’s
custom designed amplifier has been precision matched to the 10" driver. It exerts accurate and
powerful control over the driver for the best performance possible.

Summary of Contents for 4.5 PBM

Page 1: ...Model4 5PBM HighPerformancePoweredSubwoofer Instruction Manual AtlanticTechnology I N N O V A T I V E H O M E T H E A T E R 343 Vanderbilt Avenue Norwood MA 02062 781 762 6300 www atlantictechnolgy com ...

Page 2: ... structure and 2 high temperature voice coil This powerful driver has a very stiff non resonant cone that acts as a perfect piston throughout its operating range Its massive motor assembly and high temperature components mean high performance and exceptional reliability A sealed acoustic suspension enclosure for low distortion and deep bass output Acoustic suspension designs are inherently low in ...

Page 3: ...o where sound comes from The innovative DDC 36 dB crossover in the 4 5 PBM ensures precise and seamless system integration with compact satellite speakers A subsonic filter is also incorporated to filter out inaudible ultra low frequencies that can rob amplifier power Two line inputs two line thruputs The thruputs allow daisy chaining of multiple subwoofers or can act as a return path back to the ...

Page 4: ... we strongly recommend that you connect the 4 5 PBM to your system using the speaker or high level inputs This is because most processor internal crossovers are only 12 dB per octave which is not steep enough for use with the higher crossover levels required for ultra compact satellites Only use the low level RCA inputs when the processor outputs unfiltered signals Should your processor include a ...

Page 5: ...mend that you consult your local audio video specialist for more specific information High level Thruput If desired you can run a high level stereo signal through the 4 5 PBM and out to another unit This way you can add an additional subwoofer with minimal additional wiring The signal that comes out of the thruput jacks is unaltered from the input signal Warning To prevent risk of electrical shock...

Page 6: ...se option 1 or 2 If your receiver amplifier uses a switch instead of connectors then use option 3 Option 1 Option 3 Option 2 L MONO R HIGH LEVEL LOW LEVEL THRU IN IN L MONO R HIGH LEVEL LOW LEVEL THRU IN IN L MONO R HIGH LEVEL LOW LEVEL THRU IN IN Single Sub Woofer Pre Out Main In L R Receiver Amplifier Processor Pre Out Main In L R Pre Out Main In L R Internal Pre Amp External Pre Out Main In L R...

Page 7: ...EL LOW LEVEL THRU IN IN L MONO R HIGH LEVEL LOW LEVEL THRU IN IN Pre Out Main In L R Left Sub Woofer Right Sub Woofer Receiver Amplifier Processor Y adapters Left Right Main Speakers L MONO R HIGH LEVEL LOW LEVEL THRU IN IN L R THRU Sub Woofer Left Front Speaker Right Front Speaker Receiver Amplifier Example 4 Speaker Out High Level In for 1 Subwoofer This is the recommended method for connecting ...

Page 8: ...he switched outlet and may damage the equipment The 4 5 PBM is totally automatic in its operation The automatic on off circuitry will only activate the subwoofer in the presence of an audio signal from your audio video system After 7 10 minutes with no signal detected from the rest of the system the amplifier will shut itself off and go into standby mode When an audio signal is present the power L...

Page 9: ...in move the subwoofer closer to the corner Small differences in positioning the subwoofer can make big differences in the overall bass response When you find a position that seems to work well try switching the phase switch between its two settings listening closely for the smoothest transition from the subwoofer to the satellites In many cases people prefer more bass impact for movies than sounds...

Page 10: ...r phase can enhance room acoustics Since there is so much variation in the industry regarding phase and no standards have been established a switch that will reverse the phase of the subwoofer is provided on the subwoofer amplifier s rear panel Listen to a monaural musical source with strong bass content For example you can use the mono switch on an FM tuner or preamp or use a Y connector on the o...

Page 11: ... suffered no damage in shipment If you find such damage either visible or internal contact your dealer immediately for the proper return procedure Subwoofer Troubleshooting Guide Once your subwoofer is set up you should have many years of maintenance free enjoyment from your system However if you should encounter a problem refer to the following guide to help find the solution If the problem persi...

Page 12: ...chase here Model Number Serial Number Date of Purchase The serial number is found on the back of the speaker near the connecting terminals Type Features Powered Subwoofer with Sealed Acoustic Suspension Enclosure Variable 50 150 Hz 12 dB Octave low pass output Fixed 24 dB Octave 180 Hz Low Pass Filter Driver 1 10 long throw woofer 2 4 layer vented aluminum voice coil vented motor system with Dual ...

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