Onkyo HTP-993THX, SKS-HT993THX, SKS-HT978THX Owner's Manual

To set up your Onkyo HTP-993THX for optimal sound quality, ensure all speakers are positioned correctly according to the room size and seating arrangement. Use the AccuEQ room calibration feature for automatic speaker setup and adjustments.
Check all cable connections between the receiver and speakers. Ensure the receiver is set to the correct input source. Verify that the speaker settings are correct in the receiver's menu and perform a factory reset if necessary.
Intermittent sound issues can often be resolved by checking for loose connections, ensuring firmware is up to date, and resetting the receiver to factory settings. Additionally, inspect speaker wires for any damage.
Perform maintenance on your Onkyo SKS-HT993THX speakers every 6 to 12 months. This includes cleaning dust from the speaker grilles and checking all connections for corrosion or loosening.
Use a soft, dry cloth to wipe the exterior surfaces of your Onkyo HTP-993THX speakers. Avoid using any chemicals or abrasive materials that might damage the finish.
Yes, the SKS-HT978THX speakers can be used with any receiver that supports their impedance and power handling capabilities. Ensure the receiver's settings are adjusted for the speaker configuration.
Ensure the subwoofer is powered on and connected properly to the receiver. Check that the subwoofer settings in the receiver's menu are enabled and set the subwoofer volume to an appropriate level.
To improve bass response, experiment with the placement of the subwoofer. Try placing it in a corner or along a wall to enhance bass output. Adjust the crossover settings on your receiver for better integration with the main speakers.
Place the front left and right speakers equidistant from the main listening position. The center speaker should be directly above or below the TV. Surround speakers should be placed slightly behind the listening area at ear level.
To update the firmware, connect your Onkyo receiver to the internet. Navigate to the firmware update section in the settings menu and follow the on-screen instructions to complete the update process.