Atlantic Technology ® 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 Instruction Manual Model 4.
Model 4.5 PBM MODEL 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.
Atlantic Technology ® ● A useful working frequency range from 30 Hz to 150Hz. ● A Dual Diversity CrossoverTM (DDC) system with an adjustable (50 Hz to 150 Hz) 12 dB per octave low-pass crossover, and a fixed 24 dB per octave “voice filter” at 180 Hz. This unique crossover’s upper end roll-off slope is an extremely steep 12 dB + 24 dB per octave, totaling 36 dB per octave above 180 Hz. It allows for exceptional integration with most any brand or type of speaker on the market.
Model 4.5 PBM Connecting Your Subwoofer The Atlantic Technology 4.5M Powered Subwoofer is simple to hook up, offering several connection methods for maximum flexibility. Study the system diagrams starting on page 6. Once you have found the example which most closely matches your system, hook up your subwoofer(s) as shown in that diagram. IMPORTANT NOTE: If you are using the complete System 4.
Atlantic Technology ® Low-Level Connection If you choose to use the low-level (RCA jacks), simply connect your subwoofer with high quality shielded cables as shown in the diagrams. Use the diagram that best suits your connection requirements. Please see the Important Note on the previous page for connection recommendations. Using the Low-level Thruput If desired, you can run a line level stereo signal through the 4.5 PBM and out to another unit.
Model 4.5 PBM Example 1: Subwoofer Line Out/ Low Level In Receiver/Amplifier/Processor Before using this connection method, please see the Important Note on page 4. Sub Woofer Out LOW LEVEL LOW LEVEL IN THRU THRU L/ MONO L/ MONO IN IN R R HIGH LEVEL HIGH LEVEL Single Sub Woofer Example 2: Preamp Line Out/Low Level In for 1 Subwoofer This arrangement is for owners of stereo receivers/ amplifiers with Preamp outputs.
Atlantic Technology ® Example 3: Preamp Line Out/Low Level In for 2 Subwoofers Receiver/Amplifier/Processor Y-adapters L R Pre Out Note that the L/MONO input is used on both subwoofers. Instead of Y-adapters, you may also use the THRU outputs to connect back to the Main Inputs as shown in Option 2 of Example 2.
Model 4.5 PBM Example 5: Speaker Out/ High Level In for 2 Subwoofers Receiver/Amplifier This is the recommended method for connecting the 4.5 PBM to a discrete 5.1 channel. Please the the Important Note on page 4. You can also use the speaker level THRU outputs. Note that the L/MONO High Level input is used on both left and right subwoofers.
Atlantic Technology ® Figure 3: Typical arrangement for a single subwoofer in a home theater. wall and especially a corner, the more bass response you will hear. However, in many rooms, corner placement can produce too much bass or a “one note” effect and the subwoofer may work better well away from the corner. Start here Less Bass More Bass Experiment to find the best position in your room.
Model 4.5 PBM Using the Subwoofer Lo-Pass Control Start with the Lo-pass control of the 4.5 PBM set at the middle. Play some music with a range of bass notes from low to high. If the bass in the transition region between the subwoofer and satellite speakers is thin sounding, increase the Lo-pass setting by turning the knob clockwise. Alternately, if it is too full-sounding, decrease the setting by turning the knob counter-clockwise.
A t la n t ic T e c h n o l o g y ® The 4.5 PBM has an elegant Gloss Black top panel. Special adhesive tape has been employed that is designed to hold the top firmly to the cabinet, yet allow release without damage. Should you wish, you may remove the gloss top by carefully pulling it up and away from the enclosure. Under the gloss panel, the top of the enclosure is finished in the same Black Oak laminate as the rest of the enclosure. You should use care when cleaning the Gloss Black top.
Model 4.5 PBM Model 4.5 PBM Specifications 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 Diversity Crossover System (DDC)™ Amplifier Power 150 Watts RMS all discrete linear Class G power amplifier with dual power supplies Amplifier Distortion <0.
