Page 2 - For Future Reference; Table of Contents; Safety Precautions; High Performance Powered Subwoofers
2 Model 224, 334 and 444 SB Powered Subwoofer CAUTION: To reduce the risk of electric shock, do not remove the cover (or back). No user serviceable parts inside. Refer to qualified per-sonnel. WARNING: To reduce the risk of fire or electric shock, do not expose this appliance to rain or moisture. Th...
Page 3 - Shown in greater detail on page 8.
3 Instruction Manual Subwoofer Rear Panel BYPASS LOW-PASS ON AUTO PHASE NORMAL INVERT 40 160 100 LOW-PASS 60 RIGHT L/MONO OUTPUT INPUT STATUS ON OFF AC INPUT 50-60Hz 300W MAX 220-240V 110-120V FOR 110-120VAC, USE 2.5AL 250V FUSE FOR 220-240VAC, USE 1.25AL 250V FUSE FOR CONTINUED PROTECTION AGAINST R...
Page 4 - Features; Clear FilterTM Technology and Other Features; If you are using a surround Processor/Receiver that includes
4 Model 224, 334 and 444 SB Powered Subwoofer Features Clear Filter™ Technology and Other Features Two low level inputs, two low level outputs The outputs allow daisy chaining of multiple subwoofers, or as a return path back to the processor. A Phase Invert switch (Normal/Invert) This switch all...
Page 5 - Connecting Your Subwoofer; To prevent risk of electrical shock or damage to your; Subwoofer Line Out to Low Level In
5 Instruction Manual Connecting Your Subwoofer Connecting Your Subwoofer Use the low-level (RCA jack) subwoofer line out of your surround sound receiver/processor. Simply connect your subwoofer with a high quality shielded cable as shown in the diagram on page 7. Please consult your processor/receiv...
Page 6 - Low Level Connections; Low Level Connections with One Subout/LFE Output
6 Model 224, 334 and 444 SB Powered Subwoofer Low Level Connections Low Level Connections with One Subout/LFE Output Figure 3 RIGHT L/MONO OUTPUT INPUT Sub Out/LFE
Page 7 - Low Level Connections with Two Subout/LFE Outputs
7 Instruction Manual Low Level Connections Low Level Connections with Two Subout/LFE Outputs Figure 4 RIGHT L/MONO OUTPUT INPUT Sub Out/LFE Sub Out/LFE
Page 8 - Placement and Operation; A particularly useful experiment is to place the; System Set Up; Subwoofer Tuning Without an SPL Meter
8 Model 224, 334 and 444 SB Powered Subwoofer Placement and Operation If you decide not to use an SPL meter try to set all the speaker levels the same using the Test Tones. Of course, this will be much more difficult without the meter, especially for the subwoofer. Figure 6 Front Panel Variable Leve...
Page 9 - Dual Subwoofer Placement; The Phase Invert Control; Care of Your Subwoofer; Using the Low-Pass Crossover Control
9 Instruction Manual Care of your Subwoofer Dual Subwoofer Placement When two subwoofers are used, you may wish to place them asymmetri-cally; that is, in slightly different positions in the room (Figure 7). This will reduce common mode room resonances that occur with symmetri-cally positioned subwo...
Page 10 - Troubleshooting; Subwoofer Troubleshooting Guide; Problem
10 Model 224, 334 and 444 SB Powered Subwoofer Troubleshooting Subwoofer Troubleshooting Guide Once your subwoofer is set up, you should have many years of maintenance free enjoyment from your system. However, if you should encounter a problem, refer to the following guide to help you find the solut...