Kenwood Audio Video Surround Receiver VR-509¶

Initial release circa 2001.

Front view of the Kenwood AV VR-509 receiver. Back view of the Kenwood AV VR-509 receiver. Kenwood AV VR-509 receiver remote control orientated horizontally.

Note

This article serves as a personal archive and therefore should not be treated as an official source.

Documents¶

Instruction Manual

Specifications¶

Warning

Read the specifications carefully to ensure safe operation.

Audio¶

Rated power output during STEREO operation
- 100 watts per channel minimum RMS, both channels driven, at 8 Ω from 20 Hz to 20 kHz with no more than 0.7% total harmonic distortion. (FTC)
Effective power output during SURROUND operation
- FRONT (20-20kHz, 0.7% T.H.D. at 8 Ω one channel driven) 100 W + 100 W
- CENTER (20-20kHz, 0.7% T.H.D. at 8 Ω one channel driven) 100 W
- SURROUND (20-20kHz, 0.7% T.H.D. at 8 Ω one channel driven) 100 W + 100 W
Total harmonic distortion 0.05% (1 kHz, 50W, 8 Ω)
Frequency response
- CD 10 Hz ~ 60 kHz, +0 dB, –3.0 dB
Signal to noise ratio (IHF’66)
- PHONO (MM) 75 dB
- CD 91 dB
Input sensitivity / impedance
- PHONO (MM) 2.5 mV / 27 kΩ
- CD 200 mV / 47 kΩ
- MONITOR IN 200 mV / 47 kΩ
- DVD/6CH INPUT 200 mV / 47 kΩ
Output level / impedance
- TAPE REC 200 mV / 1 kΩ
- MONITOR OUT 200 mV / 1 kΩ
- PRE OUT (SUBWOOFER) 1.5 V / 2.2 kΩ
Tone control
- BASS ±10 dB (at 70 Hz)
- TREBLE ±10 dB (at 10 kHz)

Digital Audio¶

Sampling frequency 32 kHz, 44.1 kHz, 48 kHz, 96kHz
Input level / impedance / wave length
- Optical (-15 dBm ~ -21 dBm), 660 nm ±30nm
- Coaxial 0.5 Vp-p / 75 Ω

Video¶

Video inputs / outputs
- Video (composite) 1 Vp-p / 75 Ω
- S Video (luminance signal) 1 Vp-p / 75 Ω
- S Video (chrominance signal) 0.286 Vp-p / 75 Ω
- COMPONENT VIDEO (luminance signal) 1 Vp-p / 75 Ω
  - (CB/CR -signal) +/– 0.324 Vp-p / 75 Ω

FM Tuner¶

Tuning frequency range 87.5 MHz ~ 108 MHz
Usable sensitivity (MONO) 1.3 µV (75 Ω)/ 13.2 dBf (75 kHz DEV., SINAD 30 dB)
50dB quieting sensitivity
- STEREO 28 µV (75 Ω)/ 40.2 dBf
Total harmonic distortion (1 kHz)
- MONO 0.5% (65 dBf input)
- STEREO 0.7% (65 dBf input)
Signal to noise ratio (1 kHz, 75 kHz DEV.)
- MONO 75 dB (65 dBf input)
- STEREO 68 dB (65 dBf input)
Stereo separation (1 kHz) 40 dB
Selectivity (±400 kHz) 70 dB
Frequency response (30 Hz ~ 15kHz), +0.5 dB, –3.0 dB

AM Tuner¶

Tuning frequency range
- 10 kHz step 530 kHz ~ 1,700 kHz
Usable sensitivity 16 µV / (600 µV/m)
Signal to noise ratio (30% mod. 1 mV input) 50 dB

General¶

Power consumption 2.6 A
AC outlet
- SWITCHED (total 150 W, 1.25 A max.)
Dimensions
- W : 440 mm (17-5/16")
- H : 144 mm (5-11/16")
- D : 399 mm(15-11/16")
Weight (Net) 8.8 kg (19.4 lb)

Trouble Shooting¶

The following is found in the instruction manual section called "In case of difficulty" and refers to specific pages for further information.

Resetting Microcomputer (factory reset)¶

If the microcomputer may malfunction (unit cannot be operated, or shows an erroneous display) if the power cord is unplugged while the power is ON, or due to some other external factor. If this happens, execute the following procedure to reset the microcomputer and return the unit to its normal operating condition.

Warning

Resetting the microcomputer will clear the contents of the memory and returns the unit to the state it was in when it left the factory.

Unplug the power cord from the wall outlet.
While holding down the STANDBY key plug the power cord back into the wall outlet.

Amplifier¶

Symptom	Cause	Remedy
No sound from the speakers.	The speaker cords are disconnected. VOLUME is set to the minimum position. MUTE is ON. The SPEAKERS switches are set to OFF.	Connect them properly referring to "Connecting the speakers" (page 13). Adjust the volume to a proper level. Turn OFF the MUTE (page 23). Set the SPEAKERS switch(es) to ON (page 20).
The standby indicator blinks and sound is not output.	Speaker cords are short-circuited.	Turn the power off, eliminate the short-circuiting, then turn on the power again.
Sound is not output from one of the speakers.	The speaker cord is disconnected.	Connect it properly referring to “Connecting the speakers”.
Sound is not output from the surround speakers and / or the center speaker, or their sound is very small.	The surround speaker cords and/or the center speaker cord is disconnected. A surround mode has not been engaged. The surround and/or center volume controls are set to the minimum level.	Connect it properly referring to “Connecting the speakers”. Select a surround mode. Adjust the speaker levels using the test tone (page 21).
A humming noise is generated when the PHONO input selector is selected.	The audio cord from the turntable is not connected to the PHONO jacks. The turntable is not grounded.	Insert the audio cord plugs securely into the PHONO jacks. Connect the grounding wire to the GND terminal on the rear panel.
When playing a Dolby Digital source signal using a DVD player, the sound is cut off soon after it starts.	There are many possible causes for this problem, depending on the type of DVD player used.	Set the input mode to digital manual before starting playback of the Dolby Digital source (page 7).
No sound is produced during playback from a DVD player.	The input mode is set to digital manual.	Press the INPUT MODE key to select to digital auto mode.
A video source cannot be recorded normally.	The software is copy-guarded.	Copy-guarded video software cannot be recorded.

Tuner¶

Symptom	Cause	Remedy
Radio stations cannot be received.	No antenna is connected. The broadcast band is not set properly. The frequency of the desired station is not tuned.	Connect an antenna (page 15). Set the broadcast band properly. Tune the frequency of the desired station (page 25).
Interference.	Noise due to ignition noise from an automobile. Noise due to interference from an electric appliance. Noise due to a nearby TV set.	Install the outdoor antenna away from the road. Turn off the power to the appliance. Install the receiver farther away from the TV.
A station which was preset cannot be received by pressing the corresponding numeric key.	The preset station belongs to a frequency that cannot be received. The preset memory was cleared because the power cord had been unplugged for a long period of time.	Preset a station with a receivable frequency. Preset the station again.

Remote control unit¶

Symptom	Cause	Remedy
The battery indicator flashes during operation.	The batteries are nearing exhaustion.	Replace with new batteries to preserve the currently registered setup information (page 17).
Subwoofer volume cannot be adjusted.	Subwoofer is OFF.	Turn the subwoofer ON (page 20).
Certain inputs cannot be selected using the remote control.	No setup codes registered at for the respective input(s).	Register a setup code or Non-IR code at the respective input(s) (page 33).
Remote control operation is not possible.	The remote control is set to a different operation mode. Batteries are exhausted. The remote control unit is too far away from the main system, controlling angle is too large, or there is an obstacle between the receiver and the remote. The audio cords and system control cords are not connected properly. No software is loaded in the source component. An attempt is made to play a tape which is being recorded in the cassette deck. The remote control has not been set to the operation mode for the component you wish to control. The microprocessor of the remote control malfunctions.	Press the MUSIC, MOVIE, or TV keys to select the appropriate operation mode. Replace with new batteries (page 17). Operate the remote control unit within the controllable range. Connect properly referring to "Setting up the system" (page 7). Place software in the source component you want to play. Wait until recording has completed. Press the MUSIC, MOVIE, or TV keys to activate the operation mode for the component you want to control before operation (page 34). Reset the microprocessor (page 46).