External Device Controls
Overview: The Sony MEX-BT3700U single CD receiver is equipped
with Bluetooth technology, offering hands-free calling as well as music streaming
from a compatible Bluetooth phone or
music player. In addition, you can connect other music sources, such as an iPod, HD
or Satellite Radio tuner, or CD changer.
CEA2006 Compliant: The power specifications for the
MEX-BT3700 are compliant with the CEA2006 Mobile Amplifier Power Testing and
Measurement standards from the Consumer Electronics Association (CEA). These
standards were developed as a way to equitably compare power specs from model to
model and between manufacturers. The power output specs for the MEX-BT3700 are
- CEA2006 Specs: 17 watts RMS x 4 channels (at 4 ohms,
20Hz-20kHz, 1% THD-N)
- Maximum Power Output: 52 watts x 4 channels (208 watts
AM/FM Tuner: The MEX-BT3700U features a built-in AM/FM
digital tuner. The built-in AM/FM tuner offers the following features:
Auto/Manual tuning, Preset tuning (6 presets each in 5 bands), Best Tuning
Memory, Local Seek Mode, and Mono Mode.
Disc Compatibility: The CD receiver will play CDs, CD-Rs,
and CD-RW discs. The head unit also supports CD Text. The receiver will also play MP3, WMA,
and AAC files stored on a CD-R or CD-RW. The headunit can recognize up to 150
folders and 300 folders and files combined. The unit also displays ID3-Tag
information up to 32 characters.
Quick-BrowZer: The unit's Quick-BrowZer feature allow you to
search for a track on a CD or USB player/memory. When there are many items in
one category, you can search for the desired track quickly by using the Jump
function which skips in steps of 10% of the total tracks listed in the current
Note: When entering the Quick-BrowZer mode, the
repeat/shuffle setting is canceled.
Zappin': You can search for a track on a CD or USB
player/memory through the Zappin' feature. When the Zappin' feature is engaged,
the unit will play a short sample of the track (about 1 minute into the track),
then skip to the next track. You can select the length of the sample: 6 seconds,
9 seconds, or 30 seconds.
Front Panel Auxiliary Input: A front panel stereo 3.5mm
mini-jack is provided to allow the connection of a portable audio source. Just
connect your portable cassette, MD or MP3 player to this unit, and you can
listen to the audio from the portable player through the speakers in your mobile
audio system. The volume level of the auxiliary input is adjustable from -8 to
+18 dB to compensate for any difference between the unit and your portable
device. The aux input can be deactivated in the menu so it doesn't appear as an
EQ3 Stage 2: EQ3 Stage 2 offers 7 EQ presets, each of which
has a preset value for 3 bands: Low (60Hz), Middle (1kHz), and High (10kHz). The
EQ presets and the band values are as
- Xplod: Low: +6, Middle: +0, High: +2
- Vocal: Low: +2, Middle: +6, High: +0
- Edge: Low: +4, Middle: -2, High: +5
- Cruise: Low: +2, Middle: +0, High: +1
- Space: Low: +2, Middle: +3, High: +6
- Gravity: Low: +6, Middle: 0, High: +2
- Off (flat): Low: 0, Middle: 0, High: 0
- Custom: Adjustable -10dB to +10dB for each band (Low,
Loudness: This feature allows you to listen to your music
clearly at low volume levels by reinforcing the bass and treble. The bass level
is increased to +4 dB at 100 Hz while the treble level is increased to +2 dB a
Preamp Outputs: The MEX-BT3700U contains three pairs
of RCA preamp outputs - a front pair, rear pair, and subwoofer (non-fading)
pair. The Subwoofer output has an adjustable low-pass filter with a selectable cut-off
frequency of 160Hz, 140Hz, 120Hz, 100Hz, 80Hz, or Off. You can also adjust the
subwoofer's output phase to Normal or Reverse. In addition, you can adjust the subwoofer preamp output's
volume level independently from the head unit's volume control from -10 to +10 in
High Pass Filter: The BT3700U has a high pass filter for the front
and rear preamp and speaker outputs, with a selectable cutoff frequency of 80Hz, 100Hz, 120Hz,
140Hz, or 160Hz.
Auto Scroll: This feature allows long displayed items to
scroll automatically across the display when the track is changed on a disc.
Display Illumination/Clock Display: Pressing the Off button
once will turn off audio output, but the clock display and button illumination
remain on. This makes the clock display and face/button illumination "Keyed"
instead of "Unit On" only. To turn the unit off completely, you must press the
Off button for two seconds.
Dimmer: To change the brightness of the display you can set
the MEX-BT3700U to one of two dimmer modes - Dimmer Off (deactivates the dimmer)
or Dimmer On (display always dim).
Auto Off: When installing in a vehicle without an accessory
power wire at the radio location, you can set the unit to turn off all lighting
a set amount of time after you turn the power off. The Auto Off feature can be
set to 30 seconds, 30 minutes, 60 minutes, or No.
Eject: The CD disc can be ejected with the power off. The CD
player will automatically reinsert the disc if it's ejected but not removed for
15 seconds or more.
45-Degree Installation: For flexibility of installation,
this unit can be mounted between 0 (horizontal)
and 45 degrees.
Remote Control: The MEX-BT3700U
comes with the RM-X304 wireless remote commander for operating the basic audio
functions of this unit, as well as the Bluetooth Communication functions. Dimensions: Width = 1.667",
Height = 3.938", Depth = 0.443".
Optional Wired Remote Control: This unit also has a 3.5mm
minijack input for the optional RM-X4S wired rotary commander. In addition, the
PAC SWI-PS steering wheel remote interface is compatible with this head unit.
The SWI-PS interface allows you to retain the use of your steering wheel and/or
rear seat radio controls when replacing the factory head unit in select vehicles
with a Sony head unit with wired remote capability. In some GM vehicles, this
adapter allows you to retain heater control buttons as well.
External Device Controls
Bluetooth Wireless Communication: The MEX-BT3700U has
built-in Bluetooth hardware to integrate with Bluetooth-enabled cellular phones
and audio players. Bluetooth
(Standard Bluetooth version 2.0) is a two-way wireless communication system
allowing you to make and receive cell phone calls, and listen to a Bluetooth
audio device. Up to 8 phones or audio devices can be registered with the MEX-BT3700U.
You can adjust the volume for each connected Bluetooth audio device from -8 to
+18dB. Bluetooth wireless technology operates on a 2.4GHZ frequency band
within a range of about 10 meters (about 33 feet). For a list of compatible
Bluetooth devices, please visit the Sony e-support website (esupport.sony.com).
The MEX-BT3700U supports the following Bluetooth profiles:
- Hands-Free Talk (HFP 1.5/HSP): Incoming calls can be
received through this head unit, and the ring tone is output from your car
speakers. Incoming calls can be rejected if desired. To make a call from this
unit, only redial is used. To call another phone, you will need to dial the
number on your cell phone, and then transfer the call to the head unit. The
unit can be set to automatically
reconnect to the last connected Bluetooth device when the ignition is turned
on. The phone rings,
and you hear the caller's voice through the front speakers (left, right, or
both). The BT3700U has a built-in microphone located behind the detachable faceplate
or your can purchase an external microphone (158XAMC10, sold separately) for
added clarity. The MEX-BT3700U also
supports Voice Dial Activation which allows you to activate voice dialing
with a compatible Bluetooth enabled mobile-phone by saying the voice tag
stored in your cellular phone.
- Music Streaming (A2DP/AVRCP): You can listen
to music from an audio device that supports A2DP Bluetooth technology. Cellular
phones that support A2DP and have music stored in its memory can be played
through this head unit. You can listen to and perform some operations on an
audio device that supports AVRCP Bluetooth technology. On some devices, you can
pause and resume playback and skip tracks by pressing buttons on the head
USB Port: The
receiver is equipped with a front-panel Type-A USB input for plugging in a USB
Mass Storage Class device, or a compatible USB audio player. The head unit can
play music files stored on the USB device in MP3, WMA, or AAC formats. The head
unit can recognize up to 128 folders with up to 500 tracks each when connected
to a USB Mass Storage Device.
iPod Direct: The front-panel USB input can also be used to
plug in, charge, and control an iPod via a single cable for audio playback. This
is the same cable that comes with the iPod (Type A USB-to-iPod dock connector),
or can be purchased separately (472USBCABL). In Audio Mode, the iPod is
controlled by the head unit. You can switch the head unit to Passenger Mode and
control the iPod directly using the iPod's controls. The receiver is compatible
with the following iPods:
- iPod video (5th generation)
- iPod classic (80/120/160GB)
- iPod nano (1st/2nd/3rd/4th generation)
- iPod touch (1st/2nd generation)
- iPod phone/phone3G
Note: The iPod video (5th generation) and iPod nano (1st
generation) does not support Passenger Mode.
HD Radio Ready: The MEX-BT3700U is compatible with Sony's
optional XT-100HD add-on HD Tuner (sold separately) through its UniLink Bus
connection. HD Radio technology, where available, offers higher quality sound
than conventional analog broadcasts and receives text data. HD Radio provides FM
broadcasts that are equal to CD sound quality and AM broadcasts that are as good
as analog FM stereo broadcasts. HD Radio also provides a variety of data,
including station name, song title, artist name, album name, etc. Once
connected, all AM and FM broadcasts are received by the XT-100HD. HD appears as
an additional source, with five preset banks; HD1 (FM1), HD2 (FM2), HD3 (FM3),
HD4 (AM1), and HD5 (AM2). In addition to conventional broadcasts, with HD Radio
broadcasting it is possible to choose from up to 8 multicast programs (HD1 to
HD8 and analog). There are also data programs for each program.
Satellite Radio Ready: There are several options for connecting
an optional Satellite Radio receiver to this receiver:
- SIRIUS Satellite Radio: To receive
SIRIUS Satellite Radio, you can connect the optional SCC1
SiriusConnect Vehicle Tuner and the optional SNYSC1 Sony
interface module (package item number 700SIRSONY).
- XM Satellite Radio: To receive XM
Satellite Radio, you can connect the optional CNP2000UC
XM Mini Tuner and the Sony CNP-SON1 adapter cable (package
item number 700XMSON1).
- Auxiliary Input: A portable satellite
radio receiver, such as the XM Delphi SkyFi3 or SIRIUS
Sportster, can be connected to the head unit via the
auxiliary input or the Sony XA-300 UniLink Auxiliary
Input Adapter (item number 158XA300).
Note: A subscription is also required to receive
satellite radio programming from SIRIUS or XM.
Changer Controls: This unit is compatible with Sony UniLink
CD/MP3 and MD changers. In addition, this unit can control compatible Sony
Mobile Memory Stick players. A maximum of 5 CD changers, 5
CD/MP3 changers, or 5 MD changers may be connected to this receiver. When
connecting CD, CD/MP3 and MD changers, you may connect up to a total of 7
changers (but there must not be more than 5 of one type of changer). When
connecting more than one changer to this receiver, you must use the Sony XA-C40
Optional Auxiliary Input: You can connect an auxiliary audio
device (such as a portable digital memory player, cassette, MiniDisc, or VCR)
when used with the optional XA-300 UniLink Auxiliary Input Adapter. The XA-300
uses the UniLink and Bus Audio inputs on the back of the receiver, and allows
you to connect an optional CD/MD changer in addition to the auxiliary audio