User manual ATLANTIC TECHNOLOGY 172 PBM INSTRUCTION MANUAL

[. . . ] Its massive magnetic motor assembly and high temperature component parts deliver high performance and exceptional reliability. In fact, the 9. 5 pound motor assembly is identical to the one in our top of the line 15 inch subwoofers!A sealed enclosure for low distortion and deep bass output Sealed enclosure designs are inherently low in distortion and naturally deliver deep, smooth bass response with a gradual and predictable roll-off below resonance. As with all Atlantic Technology subwoofers, we have paid inordinate attention to giving you accurate musical bass reproduction along with terrific special effects. [. . . ] 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. Main Speakers Receiver/Amplifier Left Right LOW LEVEL THRU L/ MONO IN R HIGH LEVEL R IN THRU L/ MONO IN LOW LEVEL IN HIGH LEVEL Left Front Speaker Left Sub Woofer Right Sub Woofer Right Front Speaker Using the Low-level Thruput If desired, you can run a line level stereo signal through the 172 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 identical to the input signal. High-Level Connection Alternately, you may use the high-level (speaker) inputs. As mentioned above, we strongly suggest you use the High-level inputs if you are using ultra-compact satellite speakers that have little or no output below 125 Hz. We recommend that you connect your new 172 PBM Powered Subwoofer(s) using high quality wire of 16 gauge or larger. There are many respected manufacturers in the audio industry that specialize in speaker wire and interconnect cables suitable for your new system. Please consult your audio/video specialist for more specific information. High-level Thruput If desired, you can run a high level stereo signal through the 172 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 identical to the input signal. Warning: To prevent risk of electrical shock or damage to your equipment, always unplug all component AC cords before proceeding with speaker and component connections!The last step in wiring your system should be plugging in the AC cords! 7 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. We recommend that you check your local electrical codes to make sure you are not using an improper connector. Figure 2: Gold plated 5-way binding posts. Accepts up to 10 gauge bare wire It is important to observe polarity while making speaker connections: red (+) terminals on the amplifier to red (+) on the speaker, black (-) on the amplifier to black (-) on the speaker. Look carefully at the wires you are using and note that one of the wires in each pair will be marked by either the conductor color, printing on the wire jacket, a ridge on one side of the wire jacket, or a thread intertwined with the wire strands. By convention, the marked wire is connected to the red (+) terminal. Power Connection Connect the power cord to an AC outlet only after making all other connections to the subwoofer. Play some music that you know has good bass content, and turn the level control up until you just start to hear the subwoofer working. Now, from your normal listening position, determine whether the subwoofer is playing loudly enough and filling in the bass frequencies of the music evenly. If adjustment is necessary, start by changing the setting of the front panel level control to compensate. If the bass seems too heavy, move the subwoofer away from the wall/corner. [. . . ] 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 amplifier 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 outputs of one of your source components to get a mono signal. ) Experiment with the position of the phase switch to get the most extended bass. It should be obvious which is the correct setting. [. . . ]