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Table of Contents
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Summary of Contents for Boss Audio Systems 638B
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Page 2: Table Of Contents
638B MP3-Compatible AM/FM CD Receiver U S E R ’ S M A N U A L How to use bluetooth in your car audio CONTENTS Installation DIN front-mount installation DIN rear-mount installation Removing the head unit Detaching the front panel... -
Page 5: Din Rear-Mount Installation
Before removing the bezel, press the RELEASE button to remove the front panel. press RELEASE to release Release Button the front panel... -
Page 6: Detaching The Front Panel
press RELEASE to release Release Button the front panel... -
Page 7: Front Panel Controls
Front panel controls GENERAL CONTROLS POWER Press any button to turn unit ON. To turn head unit off, press and hold POWER. RELEASE Press to release and remove the front panel. DISP Selects radio frequency or clock display. To set the clock: 1. -
Page 8: Radio Controls
RADIO CONTROLS AS/PS Select six strong stations and store them in current band. 1. Select a band (if needed) 2. Hold A/PS button for more than three seconds. The new stations replace stations already stored in that band. Preset Scan Scan stations stored in current band 1. -
Page 9: Audio Controls
Front panel controls AUDIO CONTROLS EQ Press repeatedly to cycle through five modes: POP M, ROCK M, CLASS, FLAT M or DSP OFF. SUB Press and hold to engage subwoofer output. LOUD Press this button to increase the level of bass output. AUDIO BUTTON and ROTARY CONTROL Press the button repeatedly to access Volume, Bass, Treble, Balance and Fader functions. -
Page 10: Cd/Mp3 Playback Controls
CD/MP3 PLAYBACK CONTROLS EJECT Press to eject CD TUNE/TRACK BUTTONS Press and release to advance to next track or to return to the beginning of the current track (track number will be displayed). Press and hold to fast forward or reverse. Play will begin at the point when you release the button. -
Page 11: How To Select Mp3 Files
Front panel controls How to select MP3 files Searching Track: • Press “AS/PS”, then search track is activated. • Press “AUDIO” button, then the first digit will flash. • Rotary “VOL knob to right or left”, select first digit desired. •... -
Page 12: Usb And Sd/Mmc Operations
USB and SD/MMC operations 2 sec. CD MULTI SECTION MODE When press AUDIO button for more than 2 seconds, it is activated as selecting mode of these function. 2 sec. CD MULTI ON/OFF mode is selected by rotary VOL left or right 2 sec. -
Page 13: Remote Control Functions
Remote controls functions SHUFFLE Press to play ALL tracks on the CD in random order. PAUSE Press to pause CD playback. Press again to resume playback. SCAN Press this button to hear the first several seconds of each track of the disc is played. Press again to stop intro and listen to track. -
Page 14: How To Use Bluetooth In Your Car Audio
How to use Bluetooth in your Car Audio You need to connect your mobile phone and car audio by pairing. A. Press (+) button in Bluetooth Remote Box longer than 6 seconds. The LED in Remote Box will blink fast. This mode is Pairing mode stage. Note: To deactivate Pairing, Press (+) again longer than 3 seconds. -
Page 15: Electrical Connections
Electrical connections L (WHITE) ANTENNA L (WHITE) CONNECTOR SUB WOOFER L (WHITE) ANTENNA CONTROL BLUE/WHITE POWER CONTROL CONSTANT 12 VOLTS + WHITE FRONT LEFT SPEAKER – WHITE/BLACK + GREEN REAR LEFT SPEAKER – GREEN/BLACK LINE OUT (FRONT) R (RED) LINE OUT (REAR) R (RED) LINE IN... -
Page 17: Specifications
Specifications 638B MP3-Compatible AM/FM CD Receiver CD/MP3 PLAYER Signal to Noise Ratio Channel Separation Frequency Response RADIO FM Section: Frequency range Intermediate frequency Sensitivity Stereo separation Signal to noise ratio Channel step AM Section: Frequency range Intermediate frequency Usable Sensitivity...
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