JVC KD-R491 Schematic Diagrams page 22

Models for destination "M" (KD-R491, KD-R491M, KD-R496, KD-R498)
TUNER (Only for KD-R491, KD-R496, KD-R498)
FM Frequency Range
Usable Sensitivity (S/N = 26 dB)
Quieting Sensitivity(DIN S/N = 46 dB) 17.2 dBf (2.0 V/75 )
Frequency Response (±3 dB)
Signal-to-Noise Ratio (MONO)
Stereo Separation (1 kHz)
AM Frequency Range
Usable Sensitivity (S/N = 20 dB)
TUNER (Only for KD-R491M)
FM Frequency Range
Usable Sensitivity (S/N = 26 dB)
Quieting Sensitivity(DIN S/N = 46 dB) 2.0 V/75 
Frequency Response (±3 dB)
Signal-to-Noise Ratio (MONO)
Stereo Separation (1 kHz)
AM (MW) Frequency Range
Usable Sensitivity (S/N = 20 dB)
CD player
Laser Diode
Digital Filter (D/A)
Spindle Speed
Wow & Flutter
Frequency Response (±1 dB)
Total Harmonic Distortion (1 kHz)
Signal-to-Noise Ratio (1 kHz)
Dynamic Range
Channel Separation
MP3 Decode
WMA Decode
Auxiliary
Frequency Response (±3 dB)
Input Maximum Voltage
Input Impedance
USB
USB Standard
Compatible Devices
File System
Maximum Supply Current
Digital Filter (D/A) Converter
Frequency Response (±1 dB)
Signal-to-Noise Ratio (1 kHz)
Dynamic Range
Channel Separation
MP3 Decode
WMA Decode
WAV Decode
FLAC Decode
Audio
Maximum Output Power
Full Bandwidth Power (at less than 1 % THD)
Speaker Impedance
Preout Level/Load (CD/USB)
Preout Impedance
General
Operating Voltage (10.5 V to 16 V allowable)
Maximum Current Consumption
Operating Temperature Range
Installation Size (W  H  D)
Net Weight (includes Trimplate, Mounting Sleeve) 1.2 kg
• Subject to change without notice.
SPECIFICATION
87.5 MHz to 108.0 MHz (50 kHz step)
8.2 dBf (0.71 V/75 )
30 Hz to 15 kHz
64 dB
40 dB
Band 1 (AM): 531 kHz to 1 602 kHz (9 kHz step)
Band 2 (SW1): 2 940 kHz to 7 735 kHz (5 kHz step)
Band 3 (SW2): 9 500 kHz to 10 135 kHz (5 kHz step) / 11 580 kHz to 18 135 kHz
(5 kHz step)
AM: 29 dB (28.2 V), SW: 30 dB (32 V)
87.5 MHz to 108.0 MHz (50 kHz step)
0.71 V/75  (8.2 dBf)
30 Hz to 15 kHz
64 dB
40 dB
531 kHz to 1 602 kHz (9 kHz step)
28.2 V
GaAIAs
8 times over sampling
500 rpm to 200 rpm (CLV)
Below measurable limit
20 Hz to 20 kHz
0.01%
105 dB
90 dB
85 dB
Compliant with MPEG-1/2 Audio Layer-3
Compliant with Windows Media Audio
20 Hz to 20 kHz
1 000 mV
30 k
USB 1.1, USB 2.0 (Full speed)
Mass storage class
FAT12/ 16/ 32
DC 5 V 1 A
24 Bit
20 Hz to 20 kHz
105 dB
90 dB
85 dB
Compliant with MPEG-1/2 Audio Layer-3
Compliant with Windows Media Audio
Linear-PCM
FLAC file
50 W  4 or 50 W  2 + 50 W  1 (Subwoofer = 4 )
22W  4
4  to 8 
2 500 mV/10 k load
 600 
14.4 V
10A
-10C to + 60C
182 mm  53 mm  158 mm
(No.MA665<Rev.001>)3/33