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Table of contents for the manual
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Page 1
Model 372 PBM THX ® High Performance THX Powered Subwoofer System Instr uction Manual A tlantic T echnology ® I NNOVATIVE H OME T HEATER 343 V anderbilt A venue Nor wood, MA 02062 (781) 762-6300[...]
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2 Model 372 PBM THX A tlantic T echnology ® M ODEL 372 PBM THX High Per formance THX Powered Subwoofer System Congratulations on your purchase of an Atlantic T echnology 372 PBM THX powered subwoofer . W ith proper care, your new subwoofer will provide many years of trouble-free, high quality reproduction. The 372 PBM is fully THX certified to pro[...]
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3 Model 372 PBM THX A tlantic T echnology ® ● Adjustable low-pass filter from 55 Hz to full bypass The slope of this low-pass filter is 18 dB/octave. This allows for flexible integration with most any brand or type of speaker on the market. A subsonic filter is also incorporated to filter out inaudible frequencies that can rob amplifier power . [...]
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4 Model 372 PBM THX A tlantic T echnology ® Figure 1: Amplifier panel and controls for Model 372 PBM THX[...]
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5 Model 372 PBM THX A tlantic T echnology ® Example 1: Subwoofer Line Out/ Low Level In This is the most commonly used system connection for systems with surround sound receivers/ processors. Example 2: Preamp Line Out/Low Level In for 1 Subwoofer This arrangement is for owners of stereo receivers/ amplifiers with Preamp outputs. If your receiver/[...]
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6 Model 372 PBM THX A tlantic T echnology ® Example 3: Preamp Line Out/Low Level In for 2 Subwoofers Note that the L/MONO input is used on both sub- woofers. 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. Pre Out Main In LR Left Sub Woofer Right Sub Woofer Receiver/Am[...]
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7 Model 372 PBM THX A tlantic T echnology ® Example 5: Speaker Out/ High Level In for 1 Subwoofer This is the most common method for connecting a subwoofer to a system without a dedicated sub- woofer line out or Preamp outputs. Left Right Main Speakers Sub Woofer Left Front Speaker Right Front Speaker Receiver/Amplifier L/MONO L/MONO RIGHT RIGHT H[...]
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8 Model 372 PBM THX A tlantic T echnology ® THX Example: THX Subwoofer Out/Low Level In Option 1 is the most commonly used method of connecting two subwoofers to a THX system. Y ou may also use a Y - adapter as shown in Option 2. Option 1 Option 2 L/MONO RIGHT LOW LEVEL HI PASS THRU OUT IN L/MONO RIGHT LOW LEVEL HI PASS THRU OUT IN THX Sub Woofer [...]
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9 Model 372 PBM THX A tlantic T echnology ® Changing the Fuse T o change the fuse, remove the power cord, insert a screwdriver tip into the notch in the side of the fuseholder , and pr y it out. Replace with the corr ect value fuse and push back into place. Fuse values are marked adjacent to the IEC AC socket. Figure 3: The fuse is located next to[...]
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10 Model 372 PBM THX A tlantic T echnology ® Subwoofer T uning—Using the V ariable Level Contr ol Start your listening with the high-pass filter set at 80Hz, the phase switch set to normal, and the front panel variable level control (Figure 5) set to minimum, just above the Fixed THX clickstop position. Play some music that you know has good bas[...]
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11 Model 372 PBM THX A tlantic T echnology ® THX Settings When using the 372 PBM THX in a system employing THX electronics, both the lo-pass filter on the rear panel and the variable level control on the front panel should be set in the THX position for proper operation. Rotate the variable level control fully counterclockwise until it clicks into[...]
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12 Model 372 PBM THX A tlantic T echnology ® The lightning flash with arrowhead, within an equilateral triangle, is intended to alert the user to the presence of uninsulated “dangerous voltage” within the product’ s enclosure that may be of sufficient magnitude to constitute a risk of electrical shock to persons. The exclamation point within[...]