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Need help with speaker/bass problem
Hello Everyone,
First I'll describe my equipment/setup, followed by my problem. All of this equipment is less than a week old. Electronics: Audiosource Model 2 Amp (80 w/ch) Audiosource Preamp XM Radio Receiver Sony dvd player Speakers: Cambridge Soundworks M80 bookshelf (bass reflex design, with 2 rear vents/speaker) Speaker Cable: monster cable Setup: All electronics are stacked on one bookshelf in a bookcase. Each speaker is on top of a different bookcase, right near the ceiling, and only inches from the wall. History: Before setting things up as described above, I had the speakers sitting on the floor for a few days, and everything worked fine. However, after setting up the system as I recounted, I noted that there seemed to be no bass coming from the speakers. However, when I moved the right speaker another half inch away from the wall, the bass began to play. I pushed the speaker back a half inch, the bass cut out! Same behavior with the left speaker! I thought that perhaps the wiring job wasn't good into the speakers. The monster cables have hard gold-plated pins, not flexible multi-strand wire, and I found that the (-) pin was a little loose when I turned the left speaker around, so I thought that I must have been tensioning/untensioning the wire as I moved the speaker to/from the wall, and thus causing the connection to "partially" connect/ unconnect as I did so. I thought of cutting OFF the cable ends, thus exposing lots of multi-strand copper and connecting THAT to the speaker, assuring a good connection over a larger conductive surface area, but I'm not sure if that would help. I then reconnected both sets of wires, and the left speaker wouldn't play bass no matter WHERE I placed it in relation to the wall (on top of the bookcase). I then unpowered things and took a resistance meter and found that there was zero resistance between each speaker connector and its respective monster cable "tip". Also, the resistance across the speaker terminals was 8 Ohms, as expected. I then re-powered the system, and everything has been working fine ever since. I just can't help but think that something is still wrong with my system, and I don't know what it could be. I called Cambridge, but they had a cookie-cutter techie help me out who had no idea what could be wrong, though he offered to exchange the speakers. I don't want to do that until I'm sure of what the problem is. Because the speakers are rear-vented, I wondered if it was some sort of standing wave issue with the wall, but, sometimes, during my experimentation, when I pulled the speaker a couple FEET from the wall, the bass never cut back in. Thanks for any help! Please send any replies to me directly at . Thanks, and have a nice day, Scott Speck |
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