By Nina Leggett. Car Audio. Published at Monday, March 26th, 2018 - 09:56:44 AM.
Do you rely on your phone for music and more? If you use your phone for just about everything, including music, look for a receiver that features a USB port and Bluetooth®. You can play digital music files stored on your phone, and, if you have Bluetooth, stream internet radio. You can also play tunes stored on a thumb drive or plug in an MP3 player with a USB connection.
Many crossovers have extra input terminals to allow bi-amping. Instead of driving the woofer and tweeter with a single channel of amplification, you actually connect two sets of cables, with each set carrying the signal from a separate amplifier (or amp channel). This way, both low-frequency drivers (woofers) and high-frequency drivers (tweeters) receive dedicated amplification. Look for this feature if you're planning to put together a serious high-performance system.
First, listen for a few minutes while parked in the driveway. Twist all the knobs and push all the buttons. Do all the functions seem to work okay? Listen to each speaker individually by adjusting the balance and fader controls. Turn up the volume and the tone controls. Are all the speakers working, or do you hear a slight rattle or a buzz?
There are some other amp configurations to consider for when you want to include a subwoofer in your system. A 3-channel amp can take care of a single pair of speakers plus a sub quite effectively. A 4-channel amp can also be employed to run a pair of speakers and a sub — two channels bridged together to run the sub and the other two to drive the speakers. This gives you the option for future expansion of your system, allowing you to later change the amp over to run four speakers and add a separate amp for the sub.
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