On the other hand, track and artist information for streamed audio files were visible only on the phone's display, which was a little annoying, but this is something that will likely be addressed as Bluetooth 2.0 evolves. Sound quality of the streamed audio is what we expected from a technology that is still developing, with intermittent cut-out and a noticeable reduction in clarity in volume compared with CD-based (and BBE MP-restored) digital audio files. One feature that we really liked was the way that streamed audio continues to play while the preparations are being made to make a hands-free call via Bluetooth connection. We were able to get into the phone menu and dial our chosen phone number without cutting the audio stream. Only when we were ready to make the call did the Bluetooth connection switch from music to voice.
Making the call
Hands-free calling via the MEX-BT5000 is also straightforward to set up. Having already paired the phone to wirelessly stream music, we didn't have to do so again for making calls, but the process is much the same if you just want to use the Bluetooth for phoning while driving. To pair up our Bluetooth-enabled Samsung SGH-T619, we navigated through the menu (Settings > Connection > Search), and the head unit took about 30 seconds to find and correctly identify our phone. After allowing access and entering our chosen passcode, we punched the same code into our phone, and we were ready to call. The stereo is a completely autonomous phone interface: we could enter numbers using the joystick, then call out without having to take our phone out of our pocket.
While it can be laborious process to cycle through and select the 10 numerals, it is better than other systems we've seen that require the driver to use a cell phone to initiate outbound calls, which are then transferred to the head unit interface. Another elegant feature of the MEX-BT5000 is its built-in microphone, which obviates the need to wire up an external mic to a car's sun visor. One of our favorite things about the MEX-BT5000 is its versatility for making hands-free calls and its ability to store contact and call-history information. An item menu called Receive PB prepares the MEX-BT5000 for wireless phone book transfer of up to 50 contacts. Alternatively, callers can access six speed-dial entries using the preset button on the front of the faceplate or select numbers from a list of previously dialed or received calls.
Call quality is in the same league as other hands-free units we've seen, with incoming calls sounding good through the car speakers but outgoing calls coming through in slightly muffled, cavernous acoustics usually associated with speakerphones. With all of its terrific functions, the principal drawback of the MEX-BT5000 comes in the form of its start- and end-call buttons. Rather than having one large, conspicuous button for both functions in the vein of most OEM Bluetooth interfaces, the MEX-BT5000 presents drivers with one slim button hidden from the driver's view by the joystick to make outgoing calls, and another button (which doubles as the control to turn the entire stereo off) for hanging up. Pressing the start-call button while the call is underway results in the stereo passing the call back to the cell phone handset. Owners of the unit will probably get used to this strange arrangement, but we would have liked a more intuitive design.
Despite its few functionality quirks, however, the MEX-BT5000 is an attractive combination of advanced Bluetooth communication and entertainment features and high-quality digital audio playback.
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