Controls in Common to All Functions

Power: hold the "On/Standby" button (upper left) for about 3 seconds to turn the unit on or off. The delay is to prevent spurious operation.

Volume: turn the knob. Display is in dB with an arbitrary reference. The "dB" icon will illuminate when volume levels are displayed.

Mute: push the "-" button to mute or un-mute the audio. The "MUTING" icon will illuminate when audio is muted. This will also happen briefly and automatically when switching inputs.

Speaker A: push the "Speaker A / NO / 0" button to switch the main "A" speakers on or off. The "A" icon will illuminate when the A speakers are on.

Speaker B: push the "Speaker B / YES / 1" button to switch the main "B" speakers on or off. The "B" icon will illuminate when the B speakers are on.

Input Selector: push one of the big buttons.

Display Brightness: push the "Dimmer / 5" button and then use the knob to adjust display brightness. If you stop moving the knob, it reverts to a volume control again in a few seconds.

Tone Controls: push the "Tone" button (lower left). The display will show "Bass N", where N is the current bass setting. Use either the "+" and "-" buttons to increase or decrease the bass, or use the knob to change the setting. Maximum is 14, minimum is -14. Another push on the "Tone" button will change the display to "Treble N", and this works the same as the bass control. When you stop changing either setting for a few seconds, "Tone" mode is exited and the display reverts to whatever was happening prior. The current setting is saved in flash and will be restored after a power cycle.

Machine Status: push the "Setup / 9" button, to see, in order:

• heat sink temperature in °C.
• processor uptime since last reboot.
• free stack space
• IP address of the processor. This is useless information but it amuses me.
• Question: "RM IRADIO LIST?", which is asking if you want to delete the list of internet radio presets from flash memory. Press "Speaker B / Yes / 1" to erase the list, else "Speaker A / No / 0" to do nothing. Letting the screen time out in a few seconds will also cause it to do nothing. The reason to erase the list is if a radio station changes its streaming service URL; WFD keeps an up to date list here, and the receiver will fetch a fresh copy from there if it detects that the preset list has been erased.

Other Stuff: push the "Balance Center Subwoofer" button, to see, in order:

• Balance L-R NdB - allows you to change the left-right balance, and the number displayed is the difference in volume, left channel minus right channel, so positive means left channel is louder.
• center vol NdB - volume of the center channel output
• center spkr ON/OFF - allows you to turn the Center speaker output on or off. The "D" icon lights when the Center channel speaker is on.
• subwoofer NdB - allows you to control the volume of the subwoofer output. The subwoofer output is low level, and you will need a (mono) amplifier and another speaker to hear it.
• vol track ON/OFF - when ON, the system will change the volume of the center channel and subwoofer outputs to track the main volume control, so that when you adjust the main volume control, the center and subwoofer outputs will match the change (in dB).

Phono

Select the Phono input by pushing the button (you may have to push more than once until display says "Phono"). Connect a turntable to the Phono input on the back.

Tape

Select the Tape input by pushing the button (you may have to push more than once until display says "Tape"). Connect a tape deck to the Tape input (and, optionally, tape output) on the back.

Internet Radio

Select the Internet Radio by pushing the button (you may have to push more than once until display shows a station call sign). All the stations are defined in a presets file that is automatically populated the first time the unit powers up and gets a WiFi connection.

To select a different Internet Radio station, use the "← Preset →" control to scroll through the preset stations.

The presets are arranged in "genres", which are (somewhat arbitrarily) "Jazz", "Rock", "NPR", and "Classical". When you use ""← Preset →" to scroll through the presets, you do so in the currently selected genre. To change genre, use the "↓ Tuning ↑" control to scroll through the four genres. The receiver remembers what station was last listened to in each genre, so you can switch from your favorite jazz station to your favorite classical station just by changing genres.

Bluetooth / USB

Select the Bluetooth/USB input by pushing the button (you may have to push more than once until display says "Bluetooth/USB"). Optionally, plug a USB memory stick containing MP3 tracks into the USB A female jack on the front panel. If you don't plug in a USB memory stick, then the Bluetooth interface will want to pair with a Bluetooth music source.

The controls for the Bluetooth and USB input are: "play/pause 2", "Dial Tuning Prev 7", and "Next Seek 8" for respectively, the "play/pause", "previous track", and "next track" functions."Dial Tuning Prev 7", and "Next Seek 8" for respectively, the "play/pause", "previous track", and "next track" functions.

Aux

Select the Aux input by pushing the button (you may have to push more than once until display says "Aux"). Connect an audio source to the RCA input jacks on the front panel.

AM

Select the AM tuner by pushing the button (you may have to push more than once until display shows an AM station frequency). For best results, connect an AM antenna to the black terminals on the back. The receiver remembers the last AM station you listened to and defaults to that when AM is selected.

There are a number of preset stations pre-programmed into the flash memory, but you can add to or delete from this list. To select a different AM Radio station, use the "← Preset →" control to scroll through the preset AM stations.

You can also tune the AM radio by pressing "Dial Tuning Prev 7" and then using the knob to change the frequency. If you stop moving the knob, it reverts to a volume control again in a few seconds.

You can also tune the AM radio by pressing "AM direct /3" and then entering a frequency directly using the buttons with labels (ending in) 0 to 9, followed by the "Enter" button to enter this frequency. If you mis-type or the radio misinterprets a key press, you can use the "" button to erase the incorrect digit(s).

Finally, you can also tune the AM radio by using the "↑ Tuning ↓" control to shift the frequency up and down.

You can store an AM station as a preset by pressing the "Memory / 6" button. Enter the call letters by using the knob to select a letter of the alphabet (initial letter constrained to "W", "K", or "C"), and pressing "Enter" when done. You can use the "" button to erase any incorrect letter(s).

FM

Select the FM tuner by pushing the button (you may have to push more than once until display shows an FM station frequency). For best results, connect an FM antenna to the black terminals on the back. The receiver remembers the last FM station you listened to and defaults to that when FM is selected.

There are a number of preset stations pre-programmed into the flash memory, but you can add to or delete from this list. To select a different FM Radio station, use the "← Preset →" control to scroll through the preset FM stations.

You can also tune the FM radio by pressing "Dial Tuning Prev 7" and then using the knob to change the frequency. If you stop moving the knob, it reverts to a volume control again in a few seconds.

You can also tune the FM radio by pressing "FM direct /4" and then entering a frequency directly using the buttons with labels (ending in) 0 to 9, followed by the "Enter" button to enter this frequency. If you mis-type or the radio misinterprets a key press, you can use the "" button to erase the incorrect digit(s).

Finally, you can also tune the FM radio by using the "↑ Tuning ↓" control to shift the frequency up and down.

You can store an FM station as a preset by pressing the "Memory / 6" button. Enter the call letters by using the knob to select a letter of the alphabet (initial letter constrained to "W", "K", or "C"), and pressing "Enter" when done. You can use the "" button to erase any incorrect letter(s).

CD

Select the CD input by pushing the button (you may have to push more than once until display says "CD"). Connect a CD player to the CD input on the back.

The Android App

Almost all of these functions are available when using the Android App.

William Dudley
April 19, 2025