HOw do I reset a Denon AVR-588

Yes, it is possible to add a Sumo amplifier to a Denon AVR (Audio/Video Receiver) system. The Denon AVR is designed to be the central hub for audio and video processing, providing amplification and routing signals to speakers and other audio devices.
To add a Sumo amplifier to your Denon AVR system, you can follow these general steps:
1. Determine the audio output options on your Denon AVR: Check if your Denon AVR has preamp outputs, which are typically labeled as "Pre Out" or "Main Out." These outputs are used to connect external amplifiers like the Sumo amp.
2. Identify the input options on the Sumo amplifier: Check the inputs available on the Sumo amplifier. It should have an input that matches the output from your Denon AVR. The most common connection is RCA, but there could be other options like XLR or optical.
3. Connect the Denon AVR to the Sumo amplifier: Use appropriate cables to connect the preamp outputs of your Denon AVR to the inputs of the Sumo amplifier. For RCA connections, you will need RCA cables with male connectors on both ends. Make sure to match the left and right channels correctly.
4. Configure the Denon AVR: Once the connections are made, you may need to configure the Denon AVR to use the external amplifier. Check your Denon AVR's manual or menu settings to disable the internal amplifier for the connected speakers. This will ensure that the AVR sends the audio signal to the Sumo amp instead.
5. Set up the Sumo amplifier: Follow the instructions provided with the Sumo amplifier to set it up correctly. This may involve adjusting gain levels, selecting input sources, and configuring any other settings specific to the Sumo amp.
6. Test and enjoy: Once everything is connected and configured, test the system by playing audio through your Denon AVR. The audio signal should be amplified by the Sumo amplifier and sent to your speakers, providing enhanced power and performance.
It's worth noting that the specific steps and options may vary depending on the models of your Denon AVR and Sumo amplifier. It's always recommended to consult the user manuals for both devices and, if needed, seek assistance from an audio professional or the manufacturers' support teams for detailed guidance tailored to your specific equipment.

This MIGHT help a little

There's no user parameter for "no sound during Test Tones" so a reset would be futile.

Carefully examine the front panel for clues like a misplaced Mute, Tape control or Multichannel Analog (EXT) Input selected.

Register and download the manual for free at retrevo.com

http://www.retrevo.com/support/Denon-AVR-588-Receivers-manual/id/3124dj394/t/2/

Assign the input. Page 22.

Dear,

I donot think AVR588 is capable of down-converting from HDMI to component, so if you input is only HDMI and output is component, it will not work. ( see page 53 in trouble shooting as also page10 of the manual).
Therefore, you will need to match your input with your output.

If you are not too fussy, the component video signal is probably as good..You will hardly see a difference unless your AVR is capable of up-conversion, still the real difference can really be seen only on HD.
Best is to connect all the analog connections as well and enjoy.

Are you connected with video cables to a tv or "monitor" this is more than likely were the setup is visible for speaker configuration, input assignment etc, most denon receivers work this way so I would suspect you need to re-check the video connection until a set-up picture appears.

It cant up-convert component to hdmi. Input and output has to be the same. However, you wont lose anything cuz hdmi and component are comparable

FIRST, IF YOUR USING HDMI CONNECTIONS IN THE DENON HDMI SETUP YOU HAVE TO TURN THE AUDIO DELAY ADJ. ON
SECOND, THE DELAY TIME ADJ, FOR OTHER SOURCES IS LOCATED ON PG 27 IN THE MANUAL, HERE IS THE LINK TO DENON SITE WITH MANUAL
http://www.ca.denon.com/AVR-588-OM-E_102.pdf

the avr-588 apparently cannot carry sound via hdmi - don't know why; just what i found out from the geek squad at best buy; solved the problem by connecting optical cable from cable box to receiver; be sure to change the input on the receiver for opt-2 (system setup >2 inputs) to correlate with tv

Do you have a manual?

Make sure you have receiver switched to proper input as coax rather than digital