User manual CAMBRIDGE SOUNDWORKS BASSCUBE 12

[. . . ] Contents Instructions for: BassCubeTM 12 & BassCubeTM 10 Subwoofers Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . i, ii Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Audio And AC Power Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] Be sure the speaker wire connects the positive (+) terminals of the subwoofer to the positive (+) terminals of the amplifier or receiver (and similarly connects the negative (­) terminals together). All two-conductor speaker cable is coded along one conductor by lettering, a stripe or a raised bead -or- the appearance of the two conductors differs, usually one copper and one silver. This allows you to easily connect the proper conductor to each terminal. Connection Method Three: Connect from a stereo preamp output to the BassCube subwoofer's Line Level inputs. A suitable length of conventional stereo phono cable with RCA plugs at each end is all you need if your preamp has an unused stereo preamp output. To connect between a stereo preamp and a stereo power amp, combine a suitable length stereo phono cable with two "Y" adapters. Each adapter has one RCA male plug to two RCA female jacks (Figure 3). Some receivers and integrated amplifiers have preamp outputs and power amp inputs that are accessible by removing jumpers from the back panel. 2 A Note About Dolby Digital (AC-3), Large Front Speakers And Powered Subwoofers Most Dolby Digital (AC-3) decoders remove the Low Frequency Effects from the Main speakers if the "Subwoofer Output" switch is set to "On". The Main speaker "Large/Small" switches may still appear to function, but no deep bass will reach the Main speakers. This automatic deep bass filtering is unnecessary with large Main speakers. If you wish, you can send all Low Frequency Effects signals to both your Main left and right speakers and to your subwoofer by turning the subwoofer output to "Off" and setting the Main left and right speakers to "Large". This blends all the output of the Low Frequency Effects channel with the Main left and right speakers. The BassCube subwoofer needs to be connected with speaker wire to the Main speaker outputs in this case. Power Connections After making the audio connections, plug the power cord into any convenient 120-Volt AC, 60 Hz outlet and switch the subwoofer "On". Do not plug it into a switched outlet on your amplifier or receiver, as either BassCube subwoofer could draw sufficient current at high volume levels to possibly damage the switched outlet's relay mechanism. SURROUND DECODER OR RECEIVER OUTPUTS L FRONT SURROUND R CENTER SUBWOOFER* The BassCube subwoofer has an automatic "Power Off" circuit that turns off power to the amplifier circuit after it has been silent for INTEGRATED AMP OR RECEIVER (FRONT) over 15 minutes. The BassCube subwoofer rapidly activates as soon as a new signal is present. The strongest output will be produced with the subwoofer directly in the corner, since corner Left Satellite Right Satellite Left Satellite Right Satellite Left Satellite Right Satellite BassCube BassCube BassCube A. MOST BASS Surround Surround Surround Surround Surround Surround FIGURE 4: HOW ROOM PLACEMENT AFFECTS BASS RESPONSE 4 Selecting Low Pass Frequency placement "directs" most of the bass output toward the center of the listening room. Corner placement effectively reduces the amount of bass that leaks out to other rooms. Less bass output will result if the subwoofer is placed out in the room, away from the walls (see Figure 4, A). The larger the room, the greater the demand for low-frequency acoustic energy. The best type of room for bass reproduction in a home theater would be one moderate in size, solidly constructed, with no openings to other rooms. [. . . ] If the fuse blows, it is safe to replace it with a spare 2A, 250V fuse using a screwdriver (see below). If the second fuse blows, do not attempt to replace the fuse another time. If you purchased the speaker directly from Cambridge SoundWorks, call 1-877-YES-HIFI for advice. There are no other fuses or user-replaceable parts within the BassCube subwoofer. [. . . ]