Brand: YAMAHA
Category: Audio/Video
Document Type: Manual
Language: EN
Available Languages: EN , ES
Manual for SB168-ES
Uploaded: Nov. 21, 2025, 8:03 p.m.
Warranty Information
This manual contains important safety instructions and general information about the Yamaha SB168-ES.
Powering ON or OFF
To prevent loud noise bursts from the speakers when powering up the system, turn devices on in the following order: audio sources, SB168-ES, digital mixer, and finally power amplifiers. Reverse this order when turning the system off.
- Press the [POWER] switch to turn the unit ON.
- Press the [POWER] switch a second time to turn the unit OFF.
Caution: The unit consumes a very small "standby" voltage even when the power switch is turned OFF. Be sure to unplug the AC power cable if the unit will not be used for an extended period of time. Rapidly turning the unit ON and OFF in succession can cause it to malfunction. After turning the unit OFF, wait for about 6 seconds before turning it ON again.
Connecting the AC Power Cable
Before connecting the power cable, make sure that the power switches of all devices are turned OFF.
First connect the supplied power cable to the socket on the rear panel of the SB168-ES, then connect the AC plug to an appropriate AC power outlet (make sure the local supply voltage matches the rated AC voltage of the unit).
Troubleshooting and error codes
| Symptom | Possible Solution |
|---|---|
| The power won't turn on. The power indicator doesn't light. | Is the power cable connected properly? (page 6) Is the [POWER] switch properly engaged? (page 7) If you've checked all possible causes and the power still won't come on, refer the problem to your Yamaha dealer. |
| The unit is not receiving an input signal. | Are the input cables properly connected? Are the source devices delivering an appropriate signal? Check the SIG indicators on the appropriate channels. |
| The input level is too low. | Have you executed the Quick Setup function? Did you change any patch settings via the AVS-ESMonitor application after executing the Quick Setup function? Are the AVS-ESMonitor patch settings appropriate (Net Patch or I/O Patch page)? • Is the head amplifier gain set to an appropriate level? |
| No output. | If a condenser microphone is being used, is the [+48V MASTER] switch ON? If a condenser microphone is being used, is phantom power for the corresponding channel(s) turned ON? Is the head amplifier gain set to an appropriate level? |
| An error message is displayed during Quick Setup. | Are the output cables properly connected? Have you executed the Quick Setup function? Did you change any patch settings via the AVS-ESMonitor application after executing the Quick Setup function? Are the AVS-ESMonitor patch settings appropriate (Net Patch or I/O Patch page)? • Is output muted at the digital mixing console? |
| Head amplifier remote control isn't working. | Refer to page 17 for information on error messages that might be displayed during execution of the AVS-ESMonitor Quick Setup function. Did you make the appropriate Head Amp Controller setting when executing the Quick Setup function? Did you change the Serial Communication Mode setting after executing the Quick Setup function? |