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.atlantictechnology.
Model 172 PBM MODEL 172 PBM High Performance Powered Subwoofer Congratulations on your purchase of an Atlantic Technology 172 PBM powered subwoofer. With proper care, your new subwoofer will provide many years of trouble-free performance. The 172 PBM is capable of delivering very high output levels and wide dynamic range. When properly placed it will provide smooth in-room bass response down to approximately 20 Hz, with a peak SPL of 108dB (1800 cubic foot space).
Atlantic Technology ® ● A useful in room working frequency range of 20Hz to 150Hz ● A unique Dual Diversity CrossoverTM (DDC) system with an adjustable (50Hz to 150Hz) 12dB per octave low-pass crossover, and a fixed 24dB per octave “voice filter” at 180Hz. This sophisticated crossover’s upper end roll-off slope is an extremely steep 12dB + 24dB per octave, totaling 36dB per octave above 180Hz. It allows for exceptional integration with most any brand or type of speaker on the market.
Model 172 PBM IMPORTANT NOTE - Only if you are NOT using the complete System 170: If you are using a surround receiver/processor that includes its own filtered subwoofer output and ultra-compact satellites, we strongly recommend that you connect the 172 PBM to your system using the high level (speaker) inputs. This is because most receiver/processor internal crossovers are 12dB per octave, which isn’t steep enough for use with the higher crossover levels required for ultra-compact satellites.
Atlantic Technology ® 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 THRU LOW LEVEL THRU IN 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.
Model 172 PBM 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.
Atlantic Technology ® Example 5: Speaker Out/ High Level In for 2 Subwoofers Receiver/Amplifier This is the recommended method for connecting the 172 PBM to a discrete 5.1 channel receiver or amplifier. Please see 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.
Model 172 PBM Note: Due to the very close placement of the High-level connectors, the most practical connectors to use are “double banana plugs” (North America only) available from most electronic supply stores. You can connect to the High-level inputs by using a variety of connectors, or by removing 1/2" of insulation from each wire end, twisting the strands of wire together, placing the wire through one of the post holes and screwing down the nut tightly.
Atlantic Technology ® Figure 3: Typical arrangement for a single subwoofer in a home theater. Start here Less Bass More Bass Subwoofer Tuning Using the Variable Level Control Figure 4: Front Panel Variable Level Control located behind the removable grille.
Atlantic Technology ® Figure 3: Typical arrangement for a single subwoofer in a home theater. Start here Less Bass More Bass Subwoofer Tuning Using the Variable Level Control Figure 4: Front Panel Variable Level Control located behind the removable grille.
Model 172 PBM Figure 5: Assymmetrical arrangement for 2 subwoofers in a home theater, for example, one closer to a corner than the other. Using the Subwoofer Lo-Pass Control When used with the complete System 170, the 172 PBM Lo-pass control should be set at 1/3 of its range to begin with. The goal is to optimize the performance of the system by ensuring that the subwoofer and satellites produce a cohesive and well integrated sound “picture.
Model 172 PBM Model 172 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 Dual Diversity Crossover System (DDC)™ Driver (1) 12" long-throw woofer, 2”, 4 layer vented aluminum voice coil, vented motor system Amplifier Power 150 Watts RMS all discrete linear Class G power amplifier with dual power supplies Amplifier Distortion <0.
