Applies to: Denon AVR-S960H with a configured centre speaker; a known channel reference and the documented local test are available.
The useful distinctions
- Denon can generate a test tone for a selected configured speaker.
- Its level settings apply across sound modes.
- The documented Levels function is unavailable with headphones connected.
Verify the premise
An arbitrary scene does not guarantee that speech occupies the centre channel. Use a reference whose intended channel role is known, and record the receiver’s input information first. This avoids turning an artistic mix or stereo downmix into a speaker-failure diagnosis. Keep the current speaker configuration visible and do not enable a speaker that is not physically installed.
Use the local test as a boundary
A receiver-generated tone exercises a different upstream path from the programme. If the selected centre is silent there as well, focus on its documented configuration, connection and hardware path. If it works locally but the reference does not, investigate the incoming channel arrangement and processing. The test narrows the boundary; it does not prove which wire, amplifier or speaker is responsible.
Keep levels and safety controlled
Begin at a comfortable level and stop if the result is unexpectedly loud or distorted. Do not increase the centre level drastically to compensate for complete silence. Record the selected channel and observed result rather than changing several calibration values. Any physical connection inspection should follow the receiver’s powered-off safety instructions, with manufacturer support for unresolved faults.
A focused way to proceed
- Record the dialogue symptom and receiver input/mode.
- At a comfortable level, use the documented centre-speaker test.
- Compare the centre result with another configured speaker.
- Return to a known reference that intentionally exercises the centre channel.
- Record whether the same channel is absent locally and during the reference.
Worked example · synthetic
Hypothetical example: a reference intended for centre output is missing, and the receiver’s centre test is also silent while the front-left test is audible. The user investigates the centre path without claiming that every dialogue problem has this cause.
When to stop or ask for help
No live speaker-wire swaps or enclosure opening are prescribed. A silent local test localises a path; it does not uniquely identify failed hardware.