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 272 PBM THX Atlantic Technology MODEL 272 PBM THX ® High Performance THX Select Certified Powered Subwoofer Congratulations on your purchase of an Atlantic Technology 272 PBM THX powered subwoofer. A well designed subwoofer, properly integrated into your system will enhance your listening pleasure dramatically by providing the bass foundation upon which most music and special effects are built. The 272 PBM THX is capable of delivering very high output levels and wide dynamic range.
Atlantic Technology Model 272 PBM THX ® ● A linear power high current Class A/B amplifier conservatively rated at 225 watts RMS This advanced amplifier is a fully discrete design utilizing audiophile grade component parts including a custom-wound, low-hum Torroidal transformer. The output stage is capable of very high current delivery for exceptional driver control. As a custom designed amplifier it has been precision matched and equalized to the 12" driver.
Atlantic Technology Model 272 PBM THX ® Figure 1: Amplifier panel and controls for Model 272 PBM THX Connecting Your Subwoofer The Atlantic Technology System 272 PBM THX 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.
Atlantic Technology Model 272 PBM THX ® Example 1: Subwoofer Line Out/ Low Level In Receiver/Amplifier/Processor Before using this connection method, please see the Note on page 3. Sub Woofer Out HI PASS OUT LOW LEVEL THRU IN HI PASS OUT L/MONO L/MONO RIGHT RIGHT 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 Model 272 PBM THX Example 3: Preamp Line Out/Low Level In for 2 Subwoofers 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. Example 4: Preamp Line Out/Low Level In using Hi-Pass Out for 1 Subwoofer The line level HiPass outputs send audio signals above the Lo-Pass filter setting to the main L and R power amplifier inputs.
Atlantic Technology Model 272 PBM THX ® Example 5: Speaker Out/ High Level In for 1 Subwoofer Receiver/Amplifier Main Speakers This is the recommended method for connecting the 272 PBM THX to a discrete 5.1 channel. Please the Note on page 3. Left Right HI PASS OUT LOW LEVEL IN THRU L/MONO RIGHT L/MONO HI LEVEL INPUT RIGHT Left Front Speaker Sub Woofer Example 6: Speaker Out/ High Level In for 2 Subwoofers This is the recommended method for connecting the 272 PBM THX to a discrete 5.
Atlantic Technology Model 272 PBM THX ® Using the Low level Thruput If desired, you can run a low level stereo signal through the 272 PBM THX 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.
Atlantic Technology Model 272 PBM THX ® Helpful Hint: A particularly useful experiment is to place the subwoofer right at the prime listening position (move your couch or chair out of the way and put the sub in its place). Then play something with lots of good bass (preferably music), and walk around the room, listening to the subwoofer’s response. When you locate an area that has ample amounts of well defined bass you’ve found a good potential place to locate the sub.
Atlantic Technology Model 272 PBM THX ® How Much is Enough? Sometimes people prefer more bass impact for movies than sounds natural when reproducing music. You may wish to determine both a video level and an audio level if you find yourself falling into this camp. Remember however, the most common error people make when setting up their system is to play the subwoofer (and surrounds) too loudly. Of course, the Home Theater Police will not arrest you for this act.
Atlantic Technology Model 272 PBM THX ® A Word About Bass, Center Channel Modes, and System Set Up Many surround processors and receivers feature a “Wide” and “Normal” mode for the center channel speaker. Atlantic Technology recommends that the center channel be operated in the “Normal” mode when using a powered subwoofer. The center channel speaker will sound more dynamic and the intelligibility of the system will generally be improved when in the “Normal” mode. With discrete digital “5.
Atlantic Technology Model 272 PBM THX ® Model 272 PBM THX Specifications Type/Features Powered subwoofer, sealed enclosure All discrete linear Calss A/B power amplifier w/ dual power 2", four layer vented aluminum voice coil, vented motor Switched 55, 80, 100, 140Hz bypass, 18dB/octave low pass output Variable low level stereo inputs and thruputs, low level output High level stereo inputs and thruputs w/5-way, gold-plated binding posts Absolute phase invert switch Auto signal sensing on/off/bypass Bass
