Kenwood KDC-BT51U

General Features
DIN Size: 1 DIN 
Detachable Faceplate: Yes 
Protection Case For Faceplate: Yes, softcase 
Faceplate Mechanism: Full Detachable Faceplate 
Key Illumination: Variable 
Rotary Encoder & Control Knob: Yes 
Music Search function: Yes 
LOG function: Yes 
Accent key: Yes, (2way Telephone) 
Installer Memory: Yes 
Attenuator with Smooth Volume Return: Yes, (only by IR remote) 
Touch Sensor Tone: Yes 
Optional IR remote controller: Yes, (RC405) 
Digital Clock (24H): Yes 
All-off Select (20/40/60 minutes): Yes 
Built-in Connector: Molex 16 pin 
ISO connector: Yes 
Bluetooth unit built-in: Yes 
USB interface: x 1 Yes 

Display Features
Display Type: LCD Display 
Display Layout: 3/2 line full dot 
Display Illumination: Variable 
Spectrum Analyzer: Yes 
Dimmer Control: 2 steps - Automatic 
Colour control: Yes 
Display Off Mode: Yes 
Demo Mode: Yes 
Multi language menu & tag: Yes, English, French, German, Italian, Russian, Spanish

Cosmetics features
Front/edge: Piano black 
Dress plate: Dark Silver 
Volume & operation knob or wheel: Acrylic Clear (Black) 
Preset key finish: Piano Black 
Escutcheon finish: Piano Black 
Triangle Illumination: Red 
Volume & operation knob illumination: Variable 
Key illumination: variable 
Variable color illumination: Yes 
Illumination Effect: Yes 

Tuner Features
Radio Data System: Yes 
Radio Text Plus: Yes 
Program Type Function (PTY): Yes 
K3I - Clean Reception Tuner: Yes 
FM Reception: Yes 
AM (MW/LW) Reception: Yes 
Presets: 24 Presets (18FM / 3LW / 3MW) 
Station Select  
Tuner preset/recall key: Yes 
Automatic Memory Entry (AME): Yes 
Up/Down Seek Tuning: Yes 
Tuning mode (Auto1 / Auto2 / Manual): Yes 
FM Stereo / Mono Selector: Yes 

CD Features
CD-R/RW Compatible: Yes 
MP3 Playback with ID3 Tag Display: Yes 
WMA (Windows Media Audio) Playback: Yes 
AAC (Advanced Audio Coding) Playback: Yes 
CD Text Support: Yes 
Supreme: Yes 
D.A.C. processing: 24 bit 
0 bit Mute: Yes 
Random Function (Track/Disc): Yes 
Repeat Function (Track/Disc): Yes 
Scan Function (Track/Disc): Yes 

USB Features
USB terminal: Yes, Front side with slide protection cover 
USB Type: USB1.1 / USB 2.0 
ACDrive compatible: Yes 
Kenwood Music Editor Lite: Yes, can be downloaded from website 
MP3 playback with ID3 Tag Display: Yes 
WMA (Windows Media File) playback: Yes 
AAC (Advanced Audio Codec) playback: Yes 

iPod Features
Made for iPod & iPhone*: Yes 
USB Digital connection (1 wire): with option cable KCA-iP102 
Music playback: Yes 
Music library search: Yes 
Alphabet search: Yes 
Skip search: Yes 
Related search: Yes 
My playlist: Yes 
Control by hand: Yes 
Reverse browsing: Yes 
2 Speed search: Yes 
Works with iPod Classic*: 80G & 120G 
Works with iPod Video*: 5th/6th generation 
Works with iPod Touch*: 1st/2nd Gen 
Works with iPod Nano*: 1st/2nd/3rd Gen 
Works with iPhone*: Yes, iPhone, iPhone 3G, iPhone 3GS & iPhone 4
Battery charge + power control: Yes 
* Always update to latest Apple firmware  

External Media Control Features
Dual Changer Control (CH1, CH2 & AUX): Yes 
CD Text Ready with Compatible KENWOOD Units: Yes 
Disc & Track Repeat: Yes 
Disc & Track Scan: Yes 
Disc & Track Random Play: Yes 
Bluetooth Handsfree: Yes 
Bluetooth Audio Streaming: Yes 
iPod Control with KCA-iP500: Yes 
AUX RCA Adaptor: Yes 

Audio Features
Maximum Output Power: 50W x 4 
MOSFET Power IC: Yes 
Auxiliary input: Yes, Front panel 
Auxiliary Type: Mini-jack 
Pre-out: 3 RCA 
Pre-out Output Level: 2.5V 
Subwoofer Reference Level Adj.: Yes 
Built-In Amplifier Cut-Off: Yes 
Dual-Zone Source & Volume Control: Yes 
Dual-Zone (FRONT / REAR Switchable): Yes 
Source Tone Control & Memory: Bass / Mid / Treble 
Balance/Fader/Loudness Control: Yes 
Balance/Fader Control: Yes 
System Q (Preset Sound Control): Yes 
Bass Boost Circuit: Yes 
System E's+ (Built-in HPF & LPF): Yes 

Bluetooth General Features
Hands free Profile (HPF): Yes 
Serial Port Profile (SPP): Yes 
Headset Profile (HSP): Yes 
Phonebook Access Profile (PBAP): Yes 
Object Push Profile (OPP): Yes 
Synchronization Profile (SYNC): Yes 
Short Message Service (SMS): Yes 
2Way bluetooth key: Yes 
Easy pairing function: Yes 
Phone device status display: Yes 
Signal strength display: Yes 
Remaining battery display: Yes 
High-quality noise canceling microphone: Yes, Built-in or external 
Bluetooth firmware upgradeable: Yes 
* depends on phone model/make & Kenwood unit 

Connectivity
External Media Control Bus (5L): Yes 
iPod Digital Connection (1 Wire): Yes, with optional KCA-iP101 
USB interface: Yes 
OEM Wired Remote Control: Yes 
Power Control (P.CON) wire: Yes 
Dimmer control wire: Yes 

Tuner Specifications
FM Frequency Range: 87.5MHz ~ 108MHz 
FM Frequency range (50kHz step): 87.5MHz ~ 108MHz 
FM Usable Sensitivity: 0.7μV/75ohm (S/N 26dB) 
FM Quieting Sensitivity: 1.6μV/75ohm (S/N 46dB) 
FM Signal to noise ratio (Mono): 65dB 
FM Selectivity(DIN): over 80dB (±400kHz) 
FM Stereo Separation (1kHz): 35dB 
MW Frequency Range: 531kHz ~ 1611kHz 
MW Frequency step: 9kHz 
MW Usable Sensitivity: 25μV (S/N 20dB) 
LW Frequency Range: 153kHz ~ 279kHz 
LW Usable Sensitivity: 45μV (S/N 20dB) 

CD Specifications
Laser Diode: GaAIAs 
Digital Filter(D/A): 8 Times Over Sampling 
Digital/Analogue Converter: 24 Bit 
Spindle Speed: 500 ~ 200rpm (CLV: 1 times) 
Wow & Flutter: Below Measurable Limit 
Frequency Response: 10Hz ~ 20kHz (±1dB) 
Total Harmonic Distortion: 0.01% (1kHz) 
Signal to Noise Ratio: 110dB (1kHz) 
Dynamic Range: 93dB 
MP3 Decoder: Compliant with MPEG-1/2 Audio Layer-3 
WMA Decoder: Compliant with Windows Media Audio 
AAC Decoder: AAC-LC".m4a" Files 

USB Specifications
USB Version compatibility: 1.1 / 2.0 
File System: FAT 16/32 
Maximum Supply current: 500mA 

Audio Specifications
Maximum Power: 50W x 4 
Output Power (DIN45324,+B=14.4v): 30W x 4 
Preout Level: 2500mV / 10kOhm, 
Preout Impedance: ≤ 600Ohm 
Speaker Impedance: 4Ohm ~ 8Ohm 
AUX Frequency Response: 20Hz ~ 20kHz (±1dB) 
AUX Maximum Input Voltage: 1200mV 
AUX Input Impedance: 10kOhm 
Bass Tone Control: 100Hz ±8dB 
Middle Tone Control: 1kHz ±8dB 
Treble Tone Control: 12.5kHz ±8dB 

Bluetooth specifications
Technology bluetooth: 2.0 certified 
Frequency: 2.402 - 2.48 GHz 
Output power: +4dBm(max), 0dBm (AVE) power class 2 
Maximum range Line of sight approx.: 10 meter 

General Specifications
Operating voltage: 14.4V (11 ~ 16V Allowable) 
Maximum Current Consumption: 10A 
Dimensions (WxHxD): 182 x 53 x 155mm 
Weight: 1300gr