Q: Does the ONKYO SKW208 subwoofer require an external amplifier?

No, the SKW208 is an active subwoofer with a built-in amplifier of 120 W. Therefore, you do not need an additional amplifier. The subwoofer connects directly via RCA (LINE INPUT connector) to the SUBWOOFER PREOUT of your amplifier, AV receiver, or audio source. No intermediate amplification stage is necessary. Once connected, you can adjust: The output volume via the OUTPUT LEVEL control The cut-off frequency (low-pass filter between 50 Hz and 200 Hz) The phase (NOR/REV positions) to optimize integration with your speakers

Question 1

How to control the BD-SP308 player with the remote control of an Onkyo amplifier?

Accepted Answer

The BD-SP308 Blu-ray player has an HDMI 1.4 output to connect to your audio-video system. However, the technical manual for this model does not mention compatibility with amplifier remote control via HDMI.

For your Onkyo amplifier to control the BD-SP308 via HDMI, the following conditions must be met:

Your amplifier must support the HDMI-CEC (Consumer Electronics Control) protocol
The BD-SP308 must be compatible with this function - however, this model does not indicate this in its documentation

We recommend:

Using the remote control provided with the BD-SP308 player to control it
Checking if your Onkyo amplifier has an infrared receiver compatible with standard Onkyo remotes
Consulting your amplifier's manual to know its multi-device remote control capabilities

Question 2

How to increase the brightness of the display on the ONKYO CR-535?

Accepted Answer

The ONKYO CR-535 does not have a brightness adjustment function for the display. This device is equipped with a simple LED display whose brightness is fixed and non-adjustable. The display cannot be dimmed or brightened according to your preferences.

The DISPLAY button located on the front panel and on the remote control only controls the displayed information, not the brightness. By repeatedly pressing this button, you will simply cycle through the different data (track number, elapsed time, remaining time, station name, frequency, etc.), but the brightness of the LED display will remain unchanged.

If you find the display too bright or too dim, this is determined solely by the characteristics of the device and cannot be modified. This limitation is inherent to the design of the CR-535, which prioritizes simplicity and reliability over advanced customization options.

Practical tip: If the brightness bothers you, you can place a neutral translucent film in front of the display to slightly reduce its intensity, or simply position the device to minimize direct reflections to your eyes.

Question 3

Why is my SKW208 subwoofer not detecting the signal?

Accepted Answer

If your SKW208 subwoofer is not detecting a signal, here’s how to troubleshoot:

1. Check the power supply of the subwoofer

Ensure that the ON/OFF button located on the back panel is in the ON position
Check that the AC 230V power cable is properly plugged into a functioning outlet
Is the subwoofer in standby mode (indicator light)? If nothing lights up, test the outlet with another device

2. Check the RCA connections (LINE INPUT)

The SKW208 subwoofer receives audio signal through the LINE INPUT (RCA jack) on the back panel
Make sure the supplied RCA cable is securely connected on both ends: source connector (amplifier, AV receiver, etc.) and RCA input of the subwoofer
Check that the cable is not damaged or improperly inserted
If you are using a different cable, prefer a quality shielded cable to avoid interference

3. Adjust the subwoofer volume

The Output Level button on the back panel should be set to an audible level
Start at about 50-75% of the maximum volume and gradually increase

4. Check the audio source

Ensure that your amplifier, AV receiver, or audio source is functioning properly
Increase the volume of the source to ensure that a signal is actually being sent to the subwoofer
Test with another audio source if possible (smartphone, CD player, etc.)

Technical detail: The SKW208 has a Frequency button (50-200 Hz) that adjusts the crossover frequency. Make sure it is set correctly according to your setup (usually around 80 Hz for most installations).

If after these checks the subwoofer still produces no sound, the RCA cable or LINE INPUT may be defective. Try a different RCA cable or contact ONKYO support.

Question 4

Does the ONKYO SKW208 subwoofer require an external amplifier?

Accepted Answer

No, the SKW208 is an active subwoofer with a built-in amplifier of 120 W. Therefore, you do not need an additional amplifier.

The subwoofer connects directly via RCA (LINE INPUT connector) to the SUBWOOFER PREOUT of your amplifier, AV receiver, or audio source. No intermediate amplification stage is necessary.

Once connected, you can adjust:

The output volume via the OUTPUT LEVEL control
The cut-off frequency (low-pass filter between 50 Hz and 200 Hz)
The phase (NOR/REV positions) to optimize integration with your speakers

Question 5

How to solve a very low sound problem on the ONKYO HTRC630 receiver?

Accepted Answer

If the sound from your ONKYO HTRC630 receiver is very low, here are several steps to follow to identify and resolve the issue:

1. Check the volume and mute mode

Make sure the volume is turned up sufficiently using the remote control or the volume button on the device.
Check that the mute function is not activated. If it is, disable it to restore sound.

2. Check the input source

Confirm that the selected input source corresponds to the device you want to listen to (DVD player, console, etc.).

3. Examine the speaker connections

Check that the speaker cables are properly connected and in good condition.
A poorly connected or damaged cable can result in low or absent sound.

4. Check the speaker and audio settings

In the receiver menu, ensure that the speaker configuration matches your setup (stereo, surround, etc.).
Check audio settings such as the equalizer, dynamic range control, or other effects that may reduce the volume.

5. Update the firmware

If possible, check if a firmware update is available for your model, as this may fix certain audio issues.

By following these steps, you should be able to identify the cause of the low sound and remedy it. If the problem persists, it may be necessary to have your receiver checked by a professional.

Question 6

Why won't the screen of my ONKYO TX-SR805 receiver light up?

Accepted Answer

If the screen of your ONKYO TX-SR805 receiver is not turning on, there could be several reasons for this issue. Here are the steps to follow to identify and possibly resolve this concern:

1. Check the power supply

Make sure the receiver is properly plugged into a functioning power outlet.
Try unplugging and then replugging the device to reset the power.

2. Check display and energy-saving settings

Check if the energy-saving mode is activated, as it may automatically turn off the screen after a period of inactivity.
Review the settings to disable this mode if necessary.

3. Reset the device

Turn off the receiver, unplug it for a few minutes, then turn it back on to see if the screen lights up.

4. Check internal connections

If you are comfortable handling the device, check that the internal cables related to the display are not loose or damaged.

5. Hardware issue

If none of the previous steps resolve the issue, it is possible that the screen or internal circuit is defective.
In this case, it is recommended to consult a qualified professional for diagnosis and repair.

By following these tips, you will be able to determine the cause of the unlit screen on your ONKYO TX-SR805 and take appropriate measures to address it.

Question 7

Why does my ONKYO TX-NR717 receiver connected to the 'Main' output not display anything on my TV?

Accepted Answer

If your ONKYO TX-NR717 receiver is not producing any image on your TV through the HDMI Main output, start by checking the following items in this order:

1. Check the physical connections

Make sure the HDMI cable is fully inserted into the HDMI OUT MAIN output of the receiver and into the HDMI input of your TV. Also, check that the cable is not damaged by testing it with another device if possible.
Ensure that your TV is set to the HDMI input corresponding to where the TX-NR717 is connected (use the TV remote to select the correct input).

2. Check the receiver's Screen Output setting

Press HOME on the TX-NR717 remote to access the setup menu.
Go to Input/Output Assignment, then Screen Output.
Check that this setting is set to Main (since your TV is connected to the HDMI OUT MAIN output).
If this setting was set to Sub or Both, change it to Main and confirm.

3. Check the resolution settings

In the Input/Output Assignment menu, check the Resolution setting.
If your TV does not recognize the 4K or 1080p/24 resolution, select a lower resolution such as 1080p/60 or 720p/60.
Avoid the 4K Upscaling setting if your TV does not support 4K, as this may prevent display on certain models.

4. Check HDCP compatibility

The TX-NR717 uses the HDCP protocol to protect content. Only HDCP-compatible devices can display images.
If your TV is not HDCP compatible or if you are using a DVI/HDMI adapter, the image may not display.
Test with an HDCP-compatible device to verify that the receiver is functioning correctly.

5. Completely restart the system

Turn off the TX-NR717 and your TV using their respective power buttons.
Completely unplug the receiver from its power source for 30 seconds.
Plug it back in and turn it on, then power on the TV and select the correct HDMI input again.

If after these checks the screen remains black, try connecting your video source (Blu-ray player, satellite box, etc.) directly to the TV to confirm that the TV is working. If this confirms that only the TX-NR717 is having issues, consult an authorized Onkyo repair technician, as there may be a fault with the HDMI OUT MAIN port of the receiver.

Question 8

Why is there no sound when I use headphones with the ONKYO TX-NR717 receiver?

Accepted Answer

If you cannot hear sound with your headphones on the ONKYO TX-NR717 receiver, here are the checks to perform in order.

First, check the physical connection. Make sure your stereo headphones are properly plugged into the PHONES (6.3 mm) jack located at the front of the receiver. A light indicator should illuminate when the headphone plug is inserted. If you do not see this indicator, the jack is not properly connected. Also check the condition of the cable and the headphone plug, which may be damaged.

Lower the volume before plugging in the headphones. The manual explicitly recommends reducing the volume before each headphone connection to avoid sound spikes. Ensure that the receiver's volume is not at 0 or muted (check the front display for the volume level). If your headphones have an independent volume control, also check its setting.

Important: known issue with USB devices. If you have connected an iPod or iPhone to the USB port of the receiver, no sound will be produced through the headphones with this setup. Disconnect the mobile device from the USB port and use a standard audio input (RCA plugs, optical, etc.) to restore sound to the headphones.

Check the audio settings of the receiver. When you plug in the headphones, the listening mode automatically changes to Stereo (unless it was already set to Stereo, Mono, Direct, or Pure Audio). If sound still does not return, access the setup menu to adjust the “Headphone Level” setting, which can be set from -12 dB to +12 dB. If it is at the minimum (-12 dB), increase it by going through the HOME > Setup > Audio Settings > Headphone Level menu.

Remember that some audio functions do not work with headphones. The Audyssey 2EQ settings and some other audio processing parameters are automatically disabled when headphones are plugged in. This is normal and does not cause a loss of sound. The main speakers are also disabled when the headphones are connected (zones 2 and 3, if you are using them, remain active).

If none of these solutions work, try another pair of headphones to check that the problem does not come from the headphones themselves. Also consult an authorized technician if the problem persists, as this may indicate a fault with the PHONES jack of the receiver.

Question 9

How to resolve a sound buzzing issue on the ONKYO TX-SR875 AV receiver?

Accepted Answer

The buzzing sound on your ONKYO TX-SR875 AV receiver can have several causes. Here are some steps to follow to identify and resolve this issue:

1. Check the connections

Make sure all audio cables (HDMI, RCA, optical, etc.) are properly connected and in good condition.
Replace the cables if you suspect they are damaged or of poor quality.

2. Test different audio sources

Try connecting another source (Blu-ray player, console, etc.) to see if the buzzing persists.
If the problem goes away, it indicates that the original source is the cause.

3. Adjust the volume and audio settings

Lower the volume to see if the buzzing decreases, as a volume that is too high can cause distortions.
Check the audio settings in the receiver's menu, including sound processing modes, equalizer, or effects, and try disabling or adjusting them.

4. Keep electronic devices away

Electromagnetic interference can cause buzzing. Keep the receiver away from other electrical or wireless devices.

5. Restart and update

Turn off and then turn on the receiver to eliminate any potential temporary bug.
Check if a firmware update is available and proceed with installation if necessary.

By following these tips, you should be able to reduce or eliminate the buzzing sound on your ONKYO TX-SR875. If the problem persists, it may be a hardware defect requiring technical intervention.

Question 10

How to turn the ONKYO HT-R380 receiver on or off without a visible Power button?

Accepted Answer

The ONKYO HT-R380 receiver does not have a separate "Power" button. To control the power of the device, use the ON/STANDBY button located on the front panel of the receiver, or via the remote control by first pressing RECEIVER and then ON/STANDBY.

Turning on the receiver: Press the ON/STANDBY button once. The device will turn on, the display screen will light up, and the STANDBY indicator will turn off. The device exits standby mode and becomes active.

Turning off the receiver: Press the ON/STANDBY button again. The receiver will enter standby mode. Important tip: Always lower the volume before turning off the device to avoid sound surprises when turning it back on.

Standby mode or complete shutdown? Standby mode (accessible via ON/STANDBY) reduces power consumption but does not completely disable the device. If you do not plan to use the HT-R380 for an extended period, unplug the power cord from the wall outlet for a complete shutdown.

Automatic power-on function: If you have compatible RI (Remote Interactive) components connected to the receiver, it can turn on automatically when you start playback on those devices, even if it was in standby mode.

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