Setup Examples; Troubleshooting - Yamaha DBR Series Owner's Manual

Simple system with a single DBR
This example illustrates the system when connecting directly to a microphone, musical instrument, or
background music source without using a mixer.
Main application: small-sized live venue, presentations, restaurants
Note For CH2, inputs to the combo jack and to the RCA pin jacks will be mono mixed at a fixed balance. If you want to
change the balance, adjust the volume of the connected sound source.
Microphone
Musical instrument
Background music source
Floor monitor system
This system is suitable for a performer's monitoring system. For use as a vocal monitor, set the [D-CONTOUR] switch to [MONITOR].
If necessary, you can additionally connect up to four speakers in parallel. In this case we recommend that the signal is input to CH1 and the output switch is set to [CH1 THRU].
Mixer
Set to [CH1 THRU]
Symptom
Power does not turn on.
Power suddenly went off.
No Sound.
Sound is interrupted suddenly.
Sound howls (feedback).
Each speaker sound differs (if multiple speakers are
used).
Sound is The [LIMIT] indicator is off.
distorted.
The [LIMIT] indicator is on.
The microphone volume is too low.
Low and high frequency are unbalanced.
If any specific problem should persist, however, please contact your Yamaha dealer.

Setup Examples

Troubleshooting

Possible causes
The power cord is not connected properly.
The protection system has been activated, shutting
down the power supply.
The cable is not connected properly.
The protection circuit has been activated, muting the
output.
A microphone is directed toward the speaker.
Sound is amplified too much.
Settings for each speaker differ.
Input volume is excessive.
Output volume is excessive.
The [MIC/LINE] switch is set to [LINE].
The output limiter is active.
System with two DBRs and subwoofers
This system is the most suitable for a main speaker system. If desired, you can add another DBR to create
a floor monitor system.
Main application: small-sized live venue, house of worship, event site
Note We recommend to use Yamaha DXS series (referred to in this manual as DXS) as a subwoofer. In this case,
we recommend that the DBR's HPF cutoff frequency and the DXS's LPF cutoff frequency are set to the same
settings; however, you can adjust it as desired.
R
Subwoofer
Set to [CH1 THRU]
Connect the power cord all the way in so that it is firmly in place.
Turn off the power, wait until the amplifier cools down, and then turn on again.
Connect the cable all the way in so that it is firmly in place.
Wait until the amplifier cools down. If the unit won't automatically reset itself, turn off the power, and then on
again.
Aim the speaker away from the area where the microphone picks up sound.
Lower the volume of input device and locate the microphone more closely to the sound source.
Set the [HPF] switch and [D-CONTOUR] switch of each speaker to the same positions.
When the [MIC/LINE] switch is set to [MIC], and even if you lower the volume fully the sound is still distorted,
set the switch to the [LINE] position. If the sound is still distorted even if the switch has been set to [LINE],
lower the volume of the connected input devices.
Turn the [LEVEL] knob to lower the output level to a point so that the [LIMIT] indicator lights only occasionally.
Set the [MIC/LINE] switch to the [MIC] position.
Lower the input level or the output level until the [LIMIT] indicator lights occasionally.
Mixer Subwoofer
To next speaker
Possible solution
L