Why is the sound distorted on my Yamaha DBR15?
Sound distortion in your Yamaha Speaker System can occur if the input volume is too high. If the [MIC/LINE] switch is set to [MIC], try setting it to the [LINE] position, even if you lower the volume fully and the sound is still distorted. Additionally, if the [LIMIT] indicator is on, turn the [LEVEL] knob to lower the output level until the [LIMIT] indicator only lights occasionally.
What to do if my Yamaha DBR15 Speaker System power suddenly went off?
If the power to your Yamaha Speaker System suddenly goes off, it's likely that the protection system was activated. To resolve this, turn off the power, allow the amplifier to cool down, and then turn it on again.
How to stop Yamaha Speaker System from howling (feedback)?
If your Yamaha Speaker System is producing a howling sound (feedback), it could be because a microphone is directed toward the speaker, or the sound is amplified too much. Try aiming the speaker away from the area where the microphone picks up sound. Also, lower the volume of input device and locate the microphone more closely to the sound source.
What to do if sound is interrupted suddenly on my Yamaha Speaker System?
If the sound from your Yamaha Speaker System is suddenly interrupted, the protection circuit may have activated, muting the output. Allow the amplifier to cool down. If the unit doesn’t automatically reset, turn the power off, and then on again.
Technical details of the built-in amplifier, including power and features.
Step-by-step guide for disassembling the DBR10 speaker.
Steps to remove the woofer from the DBR10 speaker.
Steps to remove the tweeter from the DBR10 speaker.
Procedure for removing the amplifier assembly from the DBR10.
Steps to remove the woofer from DBR12/DBR15 speakers.
Steps to remove the tweeter from DBR12/DBR15 speakers.
Procedure for removing the amplifier assembly for DBR12/DBR15.
Procedure for removing the SUBL (SP IN) circuit board.
Procedure for removing the SUBL (SP OUT) circuit board.
Procedure for removing the SUBL (ACIN) circuit board.
Procedure for removing the DSP circuit board.
Items and software required for the test program.
Steps to initiate and manage the service inspection process.
Steps to activate the diagnostic mode and start the inspection.
Overview of the various tests performed during service inspection.
Verifying DSP communication via I2C-BUS and internal operation state.
Verifying AMP-ENA/AMP-ERR connection and response.
Conditions for accurate measurement, including instruments and jigs.
Overview of the various tests performed during inspection.
Verifying the model ID is correctly written to the CPU.
Measuring output voltage levels for various input gain settings.
Measuring the frequency response under different input signals.
Measuring total harmonic distortion under different input conditions.
List of necessary hardware and software for firmware updates.
Steps for preparing the PC and software for firmware updating.
Step-by-step instructions for performing the firmware update.
Procedure to set the model ID after replacing the DSP circuit board.
Flowchart illustrating the system's power-on sequence.
High-level block diagram of the DBR series speaker system.
References to circuit diagrams for AMPS, DSP, SUBL, and VSL boards.
General| Bass reflex | Yes |
|---|---|
| Product color | Black |
| Housing material | Plastic |
| Recommended usage | Universal |
| Suitable for outdoor use | - |
| Speaker type | 2-way |
| Number of drivers | 2 |
| Speaker placement | Ceiling-mountable, Floor, Wall-mountable |
| Audio output channels | 1.0 channels |
| Woofer diameter (imperial) | 15 \ |
| Tweeter diameter (imperial) | 1.4 \ |
| Impedance | - Ω |
| Frequency range | 50 - 20000 Hz |
| RMS rated power | 465 W |
| Crossover frequency | 2100 Hz |
| Peak Music Power Output (PMPO) | 1000 W |
| Equalizer | No |
| Audio RCA inputs | 1 |
| Connectivity technology | Wired |
| AC input voltage | 100 - 240 V |
| Power source type | AC |
| AC input frequency | 50 - 60 Hz |
| Power consumption (standby) | 18 W |
| Power consumption (typical) | 74 W |
Weight and Dimensions| Depth | 378 mm |
|---|---|
| Width | 455 mm |
| Height | 700 mm |
| Weight | 19300 g |
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