Bose 301 Series III Owner's guide - Page 5

Check very carefully to be certain that no N7 loose strands of wire are accidentally touching across terminals on the Speakers or the amplifier. This could create short circuits which can damage your amplifier. Repair any loose wire strands before operating your amplifier or receiver. Testing the connections Before testing the connections, plug your amplifier or receiver into the AC (mains) power outlet. To make sure that the speakers are connected to your amplifier "in phase" - positive to positive, negative to negative - perform this simple test. 1. Set your sound system for MONO (monophonic) reproduction. Be sure the balance control is centered or set to normal. 2. Temporarily place the speakers close together, facing each other. 3. Now, play some deep bass music over the system. If your speakers are Correctly phased, the sound will appear to come from between the speakers, providing full, natural bass response. 4. If the music seems to be lacking in deep bass, reverse the + and - wire connections on one speaker and repeat the test. Use the connection thatproduces the most powerful bass. ••• Amplifier/receiver considerations Your 301* speakers incorporate heavy duty driver elements designed to resist many types of electrical stress. However, any speaker can be damaged if the amplifier driving it should fail. Speaker damage may also occur by playing the music so loudly that it sounds distorted. This can happen even with a low-powered amplifier or receiver. Your 301 speaker system is designed for use with amplifiers or receivers rated from 10 to 150 watts per channel. For further information, refer to your amplifier or receiver owner's guide. 4