Atlantic Technology ® IN 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 T70 PBM MODEL T70 PBM High Performance Powered Subwoofer Congratulations on your purchase of an Atlantic Technology T70 PBM powered subwoofer. With proper care, your new subwoofer will provide many years of trouble-free performance. The T70 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 25Hz, with a peak SPL of 103dB (1500 cubic foot space).
Atlantic Technology ® Important Note: If you are using a surround receiver/processor that includes its own filtered subwoofer output we recommend that you set the crossover control on the T70 PBM to 150Hz. ● Two line inputs, two line thruputs The thruputs allow daisy chaining of multiple subwoofers, or can act as a return path back to the processor. ● Two high level inputs, two high-pass outputs These let you connect the subwoofer to your amplifier using the amplifier’s speaker outputs.
Model T70 PBM ● A Phase Invert switch (Normal/Invert) This switch allows precise acoustic matching with speaker systems whose output may be phase reversed. This switch also allows you to compensate for unusual room acoustics that occur when a woofer is physically separated from the midrange/high frequency units. Be sure to try the Phase switch in both positions when you set up the T70 PBM.
Atlantic Technology ® Example 1: Subwoofer Line Out/ Low Level In Receiver/Amplifier/Processor When using this connection method, please see the Important Note on page 3. Sub Woofer Out LEFT RIGHT L/MONO RIGHT OUTPUT LEFT L/MONO + INPUT - This arrangement is for owners of stereo receivers/ amplifiers with Preamp outputs. If your receiver/ amplifier uses jumper links between the Pre-out and Main In, then you must remove them and use option 1 or 2.
Model T70 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 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 Main Speakers This is the most common method for connecting 2 subwoofers to a system without a dedicated subwoofer line out or Preamp outputs. Note that the L/MONO High Level input is used on both left and right subwoofers.
Model T70 PBM Placement and Operation Generally speaking, the best location for your new Subwoofer will be in the front of the room, in or close to a corner (Figure 2). Every room has its own unique sound characteristics, and flexibility in the exact placement of the subwoofer is always desirable. The closer the subwoofer is placed to a wall and especially a corner, the more and deeper the bass response you will hear.
Atlantic Technology ® Figure 3: Assymmetrical arrangement for 2 subwoofers in a home theater, for example, one closer to a corner than the other. 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.
Model T70 PBM crossover frequency. Consult the manufacturer’s specified low frequency response for your main speakers to determine the appropriate setting on the subwoofer. In the end, however, a little time spent experimenting will generally result in dramatically better bass response. The Phase Invert Control A subwoofer operating out of phase with the rest of the system won’t provide optimum low frequency performance. Also, the correct subwoofer phase can enhance room acoustics.
Atlantic Technology ® Model T70 PBM Specifications Type/Features Powered Subwoofer with Sealed Acoustic-Suspension Enclosure 24 dB/Octave variable crossover Line-level stereo inputs and thruputs High-level stereo inputs and high-level, high-pass bass filtered outputs Absolute phase invert switch Auto signal sensing on/off Driver (1) 10" long-throw woofer, 2", 4-layer vented voice coil, vented motor system Amplifier Power 125 Watts RMS discrete linear Class A/B power amplifier Amplifier Distortion <0
Model T70 PBM For Future Reference Record your speaker serial number and date of purchase here: Model Number Serial Number Date of Purchase The serial number is found on the back of the speaker near the connecting terminals. CAUTION: To reduce the risk of electric shock, do not remove the cover (or back). No user serviceable parts inside. Refer to qualified personnel. WARNING: To reduce the risk of fire or electric shock, do not expose this appliance to rain or moisture.